Wednesday, December 29, 2010

cement vertical roller mill for sale

The vertical mill is a kind of mill equipment, widely used in cement chemicals, coal, electricity and other fields. With the advantages of small footprint, low power consumption, small noise, simple process, layout compact, combined with crushing, drying, grinding, classifying as a whole, the vertical roller mill has become the preferred equipment for milling cement raw meal in the modern cement production factories.
The world's first vertical mill was developed by Loesche Company from Germany, who had the mature design already in the year of 1925. At present, the largest vertical mill - LM63.4, has a capacity of 840 TPH, with the millstone diameter of 6.3mm, the power of 5600 KW and is equiped with 4 rollers.

The current abroad manufacturers of vertical mills mainly include Loesehe Company, Fuller Company, UBE Company (LM series of vertical mill), FLS Company (Atox Mill), KHD Company (RM mill) and Pfeiffer Company (MPS series of vertical mill). The domestic manufacturers of vertical mills have a relatively small amount, whose R&D and production are still in the developing level. However, compared with international brands, the domestic brands have some unique characteristics, which are better suited to the domestic market.

The SBM vertical roller mill, capable of grinding and drying materials simultaneously, is our key product: Introduced in 2004, the SBM technology has been continuously improved and optimi-sed to provide superior grinding equipment to our clients. Over 2,00 SBM mills are currently used worldwide in diverse applications, delivering efficient and reliable performance.

In the cement sector, the initial main range of application, namely the processing of coal and raw material, was expanded to include cement grinding. The first SBM vertical roller mill for cement grinding went into operation at Hanover-based Teutonia Zement in 2007, and GEBR. PFEIFFER AG have since established themselves as expert suppliers of cement grinding equipment.

Moreover, SBM mills are also to be found in power plants, an exclusive licence having been granted to Hitachi Babcock, entitling them to manufacture SBM coal mills for coal-fired power stations.

Besides the SBM vertical roller mill, Gebr. SBM AG’s product range encompasses special machines for the classification and drying of mineral bulk materials and for the preparation of lime and gypsum.

In fact, the options have their pros and cons, there is not a perfect solution, the key is when the owners to choose the goal must be clear. Select the program to be considered advanced and mature, but also consider the quality of employees can fit. Such as the one to save tons of cement from the lower operating costs, power consumption, the choice of the final vertical roller mill grinding system is certainly the most advanced. On the current level of technology, consider the grinding station has a running cost advantages and to ensure the quality of cement, endorsed grinding station should be closed-circuit grinding roller press + form grinding process.

Tuesday, December 21, 2010

concrete crushers

Concrete is a construction material composed of cement (commonly Portland cement) and other cementitious materials such as fly ash and slag cement, aggregate (generally a coarse aggregate made of gravels or crushed rocks such as limestone, or granite, plus a fine aggregate such as sand), water, and chemical admixtures.

Hardened concrete that has been processed for reuse, usually as aggregates. Concrete recycling is an increasingly common method of disposing of concrete structures. Concrete crusher debris was once routinely shipped to landfills for disposal, but recycling is increasing due to improved environmental awareness, governmental laws, and economic benefits.

Reinforced concrete contains rebar and other metallic reinforcements, which are removed with magnets and recycled elsewhere. The remaining aggregate chunks are sorted by size. Larger chunks may go through the crusher again. Smaller pieces of concrete are used as gravel for new construction projects. Aggregate base gravel is laid down as the lowest layer in a road, with fresh concrete or asphalt placed over it. Crushed recycled concrete can sometimes be used as the dry aggregate for brand new concrete if it is free of contaminants, though the use of recycled concrete limits strength and is not allowed in many jurisdictions.

Concrete crusher manufacturer SBM machinery, which is a professional manufacturer of concrete crushing equipment, provides concrete crushing equipment, concrete crushing machine and concrete crushing plant for sale, hire, rental. If you have concrete need to be crushed or recycling, you can buy or hire our concrete crushing plant.

limestone crusher and limestone crushing process

Limestone crusher used in stone quarry

In stone quarry, there are several types of stone crushers that can be used in limestone crushing plant.

Limestone jaw crusher is the widely used primary limestone crusher machine, it is mainly used in primary crushing process. Fixed jaw plate, and movable jaw plate are wearable parts. Different jaw crushers have different output, the usual capacity is 1-5 t/p, 30-50tph, 50-80tph, 80-120tph, 120-200tph, 200-300tph, 300-400tph, 400-500tph.

Impact crusher is also common stone crushing machine used in limestone quarry. It has the functions of crushing and shaping, can make very good cubic shape. The stone materials are mainly used for road, highway, water conservancy, airport, civil construction etc. The market prices of stones made by impact crusher is higher than that by fineness jaw crusher or compound cone crusher; the quick wear parts cost of impact crusher is also high for high hardness stones.

Limestone mobile crusher is the complete crushing unit, includes feeding, crushing, screening process. for example, limestone mobile jaw crusher includes vibrating feeder, primary jaw crusher, vibrating screen, and belt conveyor. There are other models, such as limestone mobile impact crusher, limestone mobile cone crusher, crawler type mobile crusher.

Hammer crusher for limestone crushing: Hammer crusher is the fine limestone crushing machine. In limestone processing plant, it is main limestone quarry machine used to crush limestone into powder.

Limestone crushing and grinding process:

Limestone is important buiding materials, and raw materials for cement production. We must crush limestone into suitable size through limestone crushing process or grind them into sand or powder by limestone grinding machine in limestone processing plant.

Limestone crushing process need limestone crusher equipment. In this process, we usually use jaw crusher, cone crusher, mobile crusher such as portable mobile crusher, crawler type mobile crusher. These machines are used to crush limestones into smaller particles. According to the different products, we choose the different crushing process. Usually limestone crushing plant includes primary crushing process and secondary crushing process. If the product is sand, the limestone particles must do stone shapping through sand making machine. If you need the stone powder, using limestone grinding machines to grind these crushed limestone particles into powder. In this grinding process, hammer mill, ball mill, vertical mill are usually used.

Limestone crushing plant

In cement plant, limestone is the important raw material to make cement. It goes through crushing, grinding process, then make into powder.

In casting sand production line, limestone is crushed into the particles with 58 - 57 mesh. This limestone sand is better than the performance of quartz sand in manufacturing of machinery.

SBM is a mining machine manufacturer in China, and provides all kinds of stone crushers and grinding mills, such as aggregate crusher (limestone crusher, marble crusher, granite crusher, gravel crusher), ore crusher, coal crusher, cement mill, concrete crusher, and gold mining equipments. We can also design the special complete crushing plant according to the requirements of customers. Now, our products have exported to more than 130 countries, such as USA, UAE, Germany, Indonesia, India, Vietnam, Philippines, Rusia, Canana, South Africa, Zimbabwe, Russia, Ukraine, Japan, Poland, France, Brazil, Mexico.

Monday, December 20, 2010

Cement mill,Cement crusher,Cement grinding mill,Cement Ball Mill,Vertical Cement Mill

Cement mill is kind of cement grinding mill.Cement crushers are widely used in cement mining.Cement mill includes many kinds of grinding mill,such as cement ball mill and vertical cement mill. So is cement crusher. Cement mill, cement crushing, and cement conveyor, cement screen.

Cement in powder form can be changed from plasticity paste to hard stone-like body and can become a total cemented granular materials through physical and chemical processes after being mixed with water. So cement is a good mineral binder. Cement can be not only hardened in the air, but also better hardened in the water in which it will maintain and develop strength. So cement is kind of cementitious material which will be of stronger hardness in water. Cement mil is used for cement grinding. Cement crusher is applied for cement crushing. In cement mining, you need to choose suitable cement grinding mill and cement crusher.

In cement production process, cement crusher is very important since most of the raw materials will have to be crushed before being used to process cement, such as limestone, clay, iron ore and coal, etc. Limestone is the largest amount of raw material during cement production. After limestone mining, limestone is generally of large size and high hardness. Therefore the limestone crushing is very important in the whole material crushing. Usually we choose jaw crusher for limestone crushing since jaw crusher is of easy principle, convenient maintainence and low cost. However, if the whole cement mining scale is of large size, we usually choose cone crusher or impact crusher to assit jaw crusher and to be secondary or tertiary cement crusher machine. Also cement conveyor is used to transport these materials to next procedure, such as vibrating cement screen to screen out required fineness. In some production sites, we use a whole mobile crusher to complete the whole cement crushing and screening production since the mobile crusher is equipped with jaw crusher, impact crusher or cone crusher, vibrating feeder,vibrating screen,etc.

In the cement grinding, grinding mill will be used to grind the cement clinker to an appropriate size to increase the size of its hydration, accelerate hydration rate so that it can meet the cement paste setting, hardening requirements. There are many kinds of cement grinding mill, such as ball mill, high pressure suspension grinding mill,coarse powder grinding mill, raymond mill, vertical mill, etc. In the exact production site, we can choose suitable cement grinding mill according to the exact requirement and material information. This procedure is almost the last process of cement production. So cement grinding will directly influence the products quality.

Traditional cement mill also named as cement ball mill. Ball mill is an efficient tool for grinding many materials into fine powder. The Ball Mill is used to grind many kinds of mine and other materials, or beneficiation. It is widely used in building material, chemical industry, etc. There are two ways of grinding: the dry process and the wet process. It can be divided into tabular type and flowing type according to different forms of discharging material.

coal mill processing

Coal mill is major equipment of cement plant and used for drying and grinding coal. The equipment is mainly consisted of feed device, main bearings, rotating parts, drive device, selling device, high-voltage start-up device and lubrication system. The raw material is fed into mill by feeding equipment. The hot wind enters into the mill by inlet end. As the mill cylinder rotates, the coal and hot air exchange heat in the mill. The coal is crushed and grinded in the mill. When the coal is being grinded, the powder is brought out of the mill by the hot air going through the mill.
    The coal mill we make is with reasonable structure, high grinding efficiency and is the ideal equipment for coal processing.

Ball grinding mill is the early coal mill used in coal powder plant, there are two types, wet ball mill and dry ball mill. This type coal mill performance is rather good:

  1. the output is high
  2. the maintenance is friendly
  3. the operation is easy
  4. safety control of this coal mill

Vertical mill is the most common coal mining equipment in milling plant, so vertical mill is also called vertical coal mill, it set up the coal mill stardard.

Raymond mill is also the early coal mill, the capacity of this coal mill can be up to 6-8 t/p. The finess of the finished product can be adjusted from 100 mesh to 325 mesh according to the requirements.

SBM is a professional coal mill manufacturer in China, and supply coal mills for sale with best price all over the world. We also can design coal mill according to the special requirements of our customers.

Coal mill process

Coal is mined by explosion, then crushed by coal crusher into small pieces. In this coal crushing process, several types of coal crusher are used. Jaw crusher, impact crusher, cone crusher can be used as coal pulverizer.

After crushing, small pieces of coal enter into the coal mill for grinding. Usually a complete coal milling line includes coal mill, impulse dust cleaner, piping device, cyclone collector device, classifier. The stones are squeezed by roller and ring into powder, the powder is collected by cyclone collector. In order to ptotect the environment, we also install the cloth deduster.

Improper operation of the coal mill may cause the explosion of the machine . What is the proper method to operate coal mill to avoid the disaster?

1. change the piling method of the coal to make the coal accumulate little ; thus avoid the spontaneous combustion
of the coal .
2. change the gap of the grate bar from 25mm to 22mm; thus decrease the wind speed and increase the drying speed .
3. add a settling chamber between the coal mill and the pipe; thus prevent the hot coal powder enter the coal mill .
4. add a explosion-proof valve at the opening .
5. increase the fineness of the coal from 10% to 15% .
6. make up strict safety rules .
If the coal mill stops for 3 days, empty the coal hopper or put a layer of raw meat powder on the surface to isolate the coal from the oxygen before stopping the coal mill, close the hot wind valve and open the close wind valve and then stop the feeding. remember to empty the coal in the coal mill before stopping the machine and not to stop the collector immediately .
Check the following things when operating the coal mill: the airing is ok; there is no overfeeding or underfeeding; the temperature is not too high; the order of starting and stopping the coal mill is right; the temperature of the air from the coal mill is higher the dew point.
Make an emergency plan; when an explosion happens, close the hot wind valve and the pneumatic valve, prevent the hot coal powder enter the collector and if the temperature is over 80 degree centigrade, start the carbon dioxide extinguisher.
we should pay attention to avoid safety problem in operating the coal mill. as long as we obey the safety rules, the safety problems surely can be avoided.

Sunday, December 19, 2010

gold mining equipemnt design for your mining business

Gold mining projects are distributed almost over the world,especially in Australia,China,California,south Africa,Canada,Ghana,Alaska,Arizona,Georgia,Peru,BC,Philippines,Tanzania,UK,Michigan,Mongolia,Utah,the USA,Mali,New Zealand,NZ,Nevada,Colordo,Oregon,GA,India,Adaho,Malaysia,Russia etc.In the places listed above,gold mines are easy to find while gold ore crushed slags were once everywhere after gold ore was crushed by gold mining machines such as gold ore crushers , gold ore vibrating screen,gold mining plant or other equipment that can be used in the gold mining processing.
Gold Ore Mining Products

To design a perfect gold ore mining plant line, crushers above is usually used as crushing equipment as well as miners also need vibrating feeders ,vibrating screen and belt conveyors to form a line fit for individual gold mining conditions.
Simple Gold Mining Plant line with SBM gold mining equipemnt

gold ore crushing plant
This is a simple gold ore crushing plant line for you to consider about it.
In this gold mining plant line , Impact stone crusher and Jaw stone crusher are used for primary crushing machinery because of its high capacity of feeding stones. Spring cone crusher is used for the secondory crusher for it is good at breaking a liittle big gold ore into smaller rocks which can be crushed into as small as sand..What links primary gold ore crusher and secondory gold ore plant are belt conveyors. Also , vibrating feeders and vibrating screen are necessary for the design of gold ore stone crushing plant.

Any uncovered quantity of gold is a manifold higher in value than the gold that has been dug out since the beginning of gold mining. In fact it is stated that only 10 percent of gold have been discovered so far. Within this backdrop, many new gold prospectors use up-to-date gold mining equipment and methods to unearth gold and get maximum results for their effort. Gold prospectors know by experience that using new gold mining equipment is the way to find hidden gold deposits with minimum effort.

Gold mining equipment include gold metal detectors, sluice boxes, gold panning kits, gold dredges, underwater metal detectors and gold mining tools. Unlike traditional gold mining equipment, which limits the possibility of finding a large quantity of gold, electronic gold metal detectors greatly help gold miners to increase their productions. Electronic gold metal detectors are powerful enough to find even meager quantities of gold in very deep locations. They also easily detect other metals from gold minimizing time wastages. Two special electronic gold detectors are Minelab Eureka and Bounty Hunger Landranger.

Many individual gold prospectors use sluice boxes. This is an easier and effective method than panning, as they wash a great amount of sand within a short span of time. Normally gold miners use wooden sluice boxes. Although wooden sluice boxes are heavy, they are fine for the task. Large heavy sluice boxes have to be built on the gold mining site, as they cannot be shifted easily to another place. They can rip off a large portion of river bottom. Gold dredgers, on the other hand, are very expensive. Therefore, they are not affordable for individual gold prospectors but are only suitable for large companies.

Finding gold in areas otherwise unreachable, the underwater metal detector comes in handy to help prospectors in locating gold. One such under water metal detector is Viper Trident which is a remarkably effective tool to locate gold. Gold prospectors are able to achieve their goals in reaching for gold in deep out of the way places which till now without the use of these detectors were incapable to explore in the earlier prospecting. These underwater metal detectors have its uses on land as well in many other types of work. Gold prospectors with inadequate experience and knowledge of locating deeply situated gold can effectively put the underwater metal detectors to use with no particular instructions, as this piece of equipment is straightforward and easy to use.

Gold mining equipment did not change much until the last decade. All the same, there are many new types of equipment now, such as underwater metal detectors, suction dredgers etc., that help increase the production or gold manifold. Gold mining equipment are made to withstand tough conditions and they can last long, as gold prospectors are most often working in very far distant locations, away from easy access to getting replacements in the event the equipment breaks. Before adding new equipment, gold prospectors should educate themselves on the subject to find effective gold mining equipment.

concrete crushing equipment,concrete crusher plant

Concrete is a composite construction material composed of cement and other cement materials such as fly ash and slag cement, aggregate, water, and chemical admixtures. And there are many waste garbage of concrete have been produced every day. So we need make concrete crushing.

Waste concrete is crushed when reused as a backfilling material or roadway subgrade material. In the process, cement particles that measure 200 µm or less are generated in addition to large particles that are reused. The cement particles, of which a major component is cement hydrate, are discarded because the strength is too low for reuse as a concrete material. So you need the crushing machine to reuse the wast concrete.

Concrete Crushing Machine

We have introduced concrete crushing plant, where you will need concrete crushing equipment. Here we will introduce you the exact concrete crusher, concrete grinding machine and mobile concrete crusher. For more info about SBM concrete crushing equipment, please contact us. You are most welcome.

Concrete crusher equipment

For concrete crushing equipment , you can choose jaw crusher, spring cone crusher,symons cone crusher, VSI5X impact crusher, etc. According to your capacity, choose exact concrete crusher model.

Mobile concrete crushing equipment: there are many types of mobile concrete crushers, such as mobile jaw crusher, mobile cone crusher, mobile impact crusher, crawler type hydraulic-driven track mobile crusher plant, etc. The mobile concrete crushing equipment is of lots advantages which are important for some mining sites. If you want to purchase mobile crusher for concrete crushing or other materials crushing, you can contact us. We will provide you the best suitable equipment along with perfect services.

Concrete Crushing Machinery

SBM is a professional mining crushers manufacturer and industry grinding mills manufacturer. SBM company has independent import-export right with a perfect international market department to deal with oversea trade. It has a professional pre-sale, in-sale and after-sale service faculty to provide considerate and all-around-way service to the customers.

SBM supply the the best crushing equipment,concrete crushing,mining equipment. Our service : We spare no efforts to perfect our pre-sale, in-sale and after-sale services and focus on every detail from the design stage until the final installation.We adhere to the principle that customer always comes first. Our business is successful only when customers obtain satisfaction from our crushing/ milling products and service. And we can speak aloud "SBM crushing equipment stand the test of time !". We stand here in crushing equipment, concrete crushing, mining equipment area 25 years servicing for you for every time. Stone Crushing and Screening Plants | Sand Making and Washing Plants | Grinding Mill Production Line

Thursday, December 16, 2010

Rock Crushing Plant And Vibrating Screen

vibrating screen moves round with multi-layers and high efficiency. The vibrating screen can screen the materials into multiple levels products according to the different material grain size.

Working Principle Of Vibrating Screen:

The vibrating screen is to drive vibrator through V-belt under the power of ordinary motor, so that the screen body along the vibrating power direction to make a cyclical reciprocating, the material in the screen surface to make round movement, so as to make the materials sieved.

Features Of The Vibrating Screen:

1. The materials drops down the long line, and the machine bears the features of different specifications.
2. Taking the partial block as the exciter, which is strong.
3. Screen cross-beam and box are connected by strong bolt, which is with simple structure, and convenient maintainance.
4. With small amplitude, high frequency, large-inclination structure, high efficiency, large capacity, long service life, low power consumption and noise.

Rock Crushing Plant

In rock crushing plant, jaw crusher is used as primary crusher machine, when big rocks are crushed smaller after jaw crusher, they are transferred to impact crusher or cone crusher for secondary crushing, then go through the rock shapping machine for getting cubic size. Using screening machine to screen out the suitable rock aggregate, while the unsuitable rocks return to the crusher machine fro re-crushing.
Accordint to the capacity, we design the different rock crushing plant:
40 -60 TPH:Hopper + vibrating feeder + jaw crusher(PE-500×750) + impact crusher (PF-1010) or cone crusher (HPC 160) + vibrating screen
80 - 120 TPH:Hopper + vibrating feeder + jaw crusher(PE-600×900) + impact crusher (PF-1214) or cone crusher (CS 4 1/4) + vibrating screen 
150 - 200 TPH:Hopper + vibrating feeder + jaw crusher(PE-750×1060) + impact crusher (PF-1315) or cone crusher (HPC 220) + vibrating screen
250 - 300 TPH:Hopper + vibrating feeder + jaw crusher(PE-500×750) + two impact crushers (PF-11315) or cone crusher (HPC 220) + vibrating screen

General natural rocks is big, it is not suitable for construction building. So we must crush these rocks into small size or change the form of it in rock crushing plant. rock crushers is the machine that is used to reduce the size, or change the form of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials (as in rock ore), so that pieces of different composition can be differentiated. Usually we crush rocks into 10mm, 12mm, 19mm, 25mm, 50mm, 100mm.

Our Sevice:

1.Pre-sale services: Act as a good adviser and assistant of clients; enable them to get rich and generous returns on their investments.
2.Services provided during the sale: Respect our clients; present the clients with ease, relaxation and a surprise; devote ourselves to improve the total value of our clients.
3. After-sale services: Improve the added value of our products, and let the clients free from the using troubles.

Wednesday, December 15, 2010

Bauxite Crusher is widely used in bauxite crushing plant and bauxite grinding production line

Bauxite is one of the most important industrial minerals and it being the aluminium ore, is the principal raw material for the production of alumina. Bauxite is formed by lateritization of various silicate rocks such as granite, gneiss, basalt, syenite, and shale. The bauxite rock usually includes other materials such as iron hydroxides, clay, silt and free silica. It most often occurs as a residual soil material in tropical and subtropical areas. It is the primary source of aluminum.

There are several crushers for choose to be bauxite crusher.
Jaw crusher, whose reduction ratio is up to 4-6 and the finished products are even, can be widely used in crushing hard, medium-hard, soft ore, such as various kinds of ore, slag, building stones, marble, etc with compression strength below 320Pa. This machine is suitable for mines, building materials, highway, water conservancy and chemical industry, etc.
impact crusher is optimized and widely applied in the first and secondary crushing. It can crush material like granite, basalt, bluestone, etc the longest side of which is less than 500mm, and anti-pressure strength is not more than 320Mpa, and the final product is ideal device for aggregation used in highway and railway surface as well as water and electricity industry.

Cone crusher series has a feature of reliable construction, high productivity , easy adjustment and low operating cost. It is widely used both domestic and abroad in metallurgy, architecture, roak making , chemistry and silicate industry for crushing various mid-hard and hard ores and rocks. It's spring release system acts as an overload protection to allow the tramp iron to pass without damage to the crushing chamber. The sealing system uses double dry oil and water sealing to separate the lubricating oil from stone dust to provide its reliable operationg .The crushing chamber has atandard, medium and short head typer to fit the needs of medium crushing , medium-fine crushing and fine crushing.

The hammer crusher (hammer mill) crushes materials by the collisions between high-speed hammer and materials. Its features are simple structure, high reduction ration, high efficiency and etc. The hammer crusher(hammer mill) are developed for both dry and wet crushing of brittle, medium-hard materials for the mining, cement, coal, metallurgic, construction material, road building and petroleum & chemical industries.

In the bauxite production process, we will mainly introduce to you bauxite grinding system.

For the bauxite powder grinding equipment, ball mill is used. The whole powder grinding system uses loop flow system. Meantime you can select the separator in accordance with the requirements. After crushed by bauxite crushers, the materials are grinded in the powder grinding equipment and discharged to high efficiency separator by elevator. Pulse bag dust catcher is also needed in the whole bauxite grinding plant.

SBM is a professional manufacturer of bauxite grinding mill and bauxite grinding plant. The commonest bauxite grinding mill is SBM MSB coarse powder mill. Besides, SBM can supply raymond mill, ball mill, vertical mill, etc and design kinds of whole grinding plant on the basis of customers' requirement. SBM grinding mill is your best choice of grinding bauxite.

These bauxite crusher can compose a complete bauxite crushing plant. It is the mainly machine in bauxite processing, and it's capacity can be adjusted. SBM is a professional manufacturer of bauxite crusher and bauxite grinding machine. If you need bauxite crusher and bauxite grinding mill, you can contact us.

Monday, December 13, 2010

Coal crusher and cola processing

Coal is the important energy resources and mineral resources in our life. In order to use coal efficiently, we usually crush coal into powder by coal crusher.

Coal Jaw crusher is the most common crusher equipment in coal crusher plant and used as primary coal crusher. It can crush big coal into small pieces.

Impact crusher is another common crusher that is used in coal crushing process. It is mainly used in primary or secondary crushing process.

Cone crusher is used as fine coal crusher machine, and used in secondary or tertiary crushing process.

Hammer crusher is a coal crusher with small capacity. Usually it is used with coal mill to grind coal into powder.

Mobile coal crusher is the convenient coal crusher. It unite the crushing equipment, belt conveyor, and vibrating screen. So crushing and screening process can be finished in this machine.

These stone crushers have their own benefits. How to choose which type of coal crusher is used in coal crushing depends on your requirements, such as crushing capacity, the finished size, etc.

Coal crusher plant

In fact, we rarely use only one crusher in coal crushing process. Usually we compose these coal crushers into a complete coal crusher plant.

A complete coal crusher plant includes crushing and screening machines. Jaw crusher is the primary crusher, impact crusher is the secondary crusher, cone crusher is the fine crusher. Raw coal is transported between these coal crushers through belt conveyor. The finished crushing coal materials is screened out by vibrating screen. The eligible coal materials enter into further process, while unqualified pieces return to the coal crusher for crushing again. In this coal crushing process, coal can be crushed into 30-50 mm. If you need coal powder, coal particle is grinded into powder by coal mill.

Coal crusher manufacturer

SBM is a coal crusher supplier in China, and design coal crusher for coal crushing process. With the development of 30 yesrs, our products have formed two main kinds – crushers and grinding mills. Crushers include jaw crusher, impact crusher, cone crusher, and vsi crusher. Grinding mills include ball mill, raymond mill, vertical mill, and ultrafine mill. We also supply a complete crushing and screening plant, such as stone crushing plant, coal crushing plant, ore crushing plant, concrete crushing plant, construction waste crushing plant and ballast crushing and screening plant. Now our crusher machines have export to all over the world, such as Indonesia, Philipines, India, Vietnam, USA, Australia, South Africa, Egypt, Germany, Poland.

Coal crushing and coal mill:

Though coal has many usages such as gasification, liquefaction, ethanol production, the major usage is used as fuel and coke. In order to make full use of coal and reduce the pollution of the environment, after the coal have been mined, people usually crush the larger coal block to small one by coal crushing plant, use coal mill or coal pulverizer to grind the coal.

Coal crusher:
In the coal crushing plant, coal crushing can resize the coal stone so that it can be easily handled and processed. For the Mosh hardness of coal is usually under 5, the miners can use jaw crusher, JC jaw crusher, impact crusher, hammer crusher etc. to handle it. After the coal has been crushed, we need vibrating screen to grade the coal by size and then transport the coal via belt conveyor. In this process, dewatering screen is optional to remove water from the product.
Coal Crusher is acknowledged in coal processing industry for a long time. SBM has many years manufacturing experience in coal crushing plant (coal crushing process, washing plant and belt conveyor). SBM is a major coal crusher supplier for power plants and coke ovens, crushing limestone for blast furnaces, and crushing a wide range of raw and manufactured materials for industry.
As the largest exporter in the design and manufacture of coal crushers and spare parts, SBM crushers are used in a wide variety of material reduction and processing applications in 100 countries around the world.

Coal mill:
As coal powder is the most important fuel in the power plant, The plant owners need coal mill or coal pulverizer to grind the coal to micro powders.
Raw coal (crushed) is fed through hopper at the top of the coal pulverizer and falls down to grinder ring to be pressed, crushed and milled into pieces by rollers. After the first crush, coal powder fall into the second and third layer. The pumping of the high-pressure centrifugal blower put the outside air into the coal mill. The coarse coal powder will be brought into the classifier.
As a pioneer in coal pulverizer, SBM has positioned itself well to meet the challenge of supplying coal mill with reliably quality and efficiently at the lowest cost.
SBM can manufacture and supply coal mill for all grades from hard coal to coke coal, our ball mill, High pressure Raymond mill, MTW trapezium mill, MTM trapezium mill, Coarse powder mill and micro powder mill is an ideal choice for power plants. The power plant can equipment different kinds coal mill to meet the required size.

Power plant coal mill Case:

Coal mill plays an important role in the coal-fired power plant. The power plant has two types of mills: ball mills and grinding mills.
Ball Mills. A ball mill uses steel balls and crush any coal that is in their way.
grinding Mills. The other type of coal mills are grinding mill. The coal gradually breaks into powder. The outlet of the mill includes a blower that blows the fine powder up to the boiler furnace.
After the coal has grind to micro powder, it will transported to boilers via a round pipe. The crushed coal is conveyed using primary combustion air into the furnace side of the boiler. The coal powder is feed into the coal mill through a central inlet pipe where gravity is used to lead the coal to the bottom of the coal mill, where the grinding table and heavy rollers of coarse powder pulverizers or micro powder grinding mills pulverizes the coal to particles. The air flow is fed through the mill, with the purpose of heating and lift the coal particles out of the coal mill and into the boiler furnace.

stone crusher machine for sandstone mining

Stone Crushing Plant

The stone-making production line produced by our company can provide you with all-around technical support. The whole line consists of vibrating feeder, jaw stone crusher, impact crusher, vibrating screen and belt conveyor. According to specific requirements, we can combine different models together to meet various needs
.
1. brief introduction of stone production line:
First the raw materials are regularly conveyed into the elementary-crushing machine by the vibrating feeder, then the belt conveyor transfers the elementary products to impact crusher for secondary crush. The secondary products will be separated into stone of different sizes by the vibrating screen. The parts not satisfying the needs will be returned to the impact crusher for further crush.

2. Features of the stone-making production line:

The whole line is highly automatic and the size of the finished products is even, good-shaped and can be adjustable, with high crushing ratio, low power consumption and high capacity, which is suitable for big, middle and small projects, such as road and bridge construction.
The complete product line assures matching the right crusher to individual customer application requirements.

Sandstone is sand cemented together into rock, the structure is stable. Its color has a wide range from nearly white to nearly black, with gray, brown, red, pink and buff in between. The chemical constitution of sandstone is the same as that of sand; the rock is thus composed essentially of quartz. The cementing material that binds together the grains of sand is usually composed of silica, calcium carbonate, or iron oxide. Sandstones are used for variety of purposes. They are mainly used in paving, construction, road building etc. It is used as ornamental rocks for buildings, monuments, grave stones, and many other possible uses.

Sandstone Crusher and Crushing Plant

In the construction and quarry, the sandstone is getting more and more widely used. The crushed stone is used mostly as aggregate for road construction and maintenance. It is also used for making cement and lime and other chemical applications, and in agriculture. Our company is the major crusher manufacturer in China, we have many types stone crusher machines for your reference, like cone crusher series plant, impact crusher series plant, jaw crusher series plant, or our new product portable series crusher plant.

The mobile stone crusher has excellent performances, the design idea is based on the client’s requirements, which clears faults of the crushing place, surroundings and the complex basic configurations. It is really supply simpler, high efficient and lower cost machines for clients.

Sunday, December 12, 2010

Copper Crusher – Copper Ore Crusher – SME Crushing Plant

Hydraulic Cone Crusher and ZYC Series Cone Crusher

symons cone crusher

cThe Hydraulic Cone Crusher is widely used for secondary and fine crushing in the fields of mining, building materials, metallurgies and so on. The Hydraulic Cone Crusher can crush materials with middle and high hardness such as, ironstone, copper ore, granite, basalt, cobblestone, marble, limestone and so on. The Hydraulic Cone Crusher is popular to be used in high automatic crushing line which has strict requirement for finished products’ shape and ratio.

ZYC cone crushers on the basis of absorbing foreign technology, based on customer needs, based on the lamination theory and a number of broken ground breaking conceptual design developed by a small set of high-frequency pendulum, optimize stroke in the cavity and reasonable one of the modern high-performance cone crusher.

HP series Cone Crusher adopts computer optimization design to speed up main shaft speed. The unique crushing chamber replace system can quickly replace components in crushing chamber to meet different size requirement. The friction disc design and rotation of eccentric shaft bushing around fix cone plus more reasonable "labyrinth seal" system are unique features of HP series, which have more advantages like easier operation, larger application scope, more reliable, more smooth functioning comparing with spring and traditional cone crusher. It is the most ideal equipment for large stone crushing factory and mining industry.

Features of ZYC cone crusher

1. High crushing ratio and production efficiency
2. Less spare part consuming and low operation cost
3. between-layer pressuring crushing and better finished product shape.
4. Hydraulic pressure protection and hydraulic pressure cavity clearing, high automatization and less stop production and repairing time.

5. Thin oil lubrication makes the service time increased.
6. Manifold crushing cavity.
7. Easy maintenance and operation.
8. The crusher can provide customers a higher capacity, better product shape, and easy be operated.

Working Principle of ZYC cone crusher

When cone crusher work, by the motor through V-belt, host pulley, drive shaft, a small bevel gear, bevel gear driving a large external brass rotation axis line of cone crushing force copper out by rotating the swing next move, making the broken wall near the surface from time to time and mortar wall from time to time to leave the rolling surface, so that the material in the fixed cone and fixed cone crushing cavity composed of the ring constantly under attack, pressing and bending and breaking. After repeated squeezing, shock and bending, the material crushing to the required size, the lower discharge.

5 worst ways to pop the question

Proposals are at their peak around the holidays, with one in four grooms popping the question in December. Incidentally, it's also the month of a statistical spike in break-ups. Coincidence? Maybe not. A bad proposal can mean the end of a relationship, and it's not always obvious what's bound to backfire. Before you bite the bullet, educate yourself on how not to pop the question.

1. Don't propose in public

If you haven’t watched the video (above) of a Jumbotron proposal that backfired, consider it a warning. “Proposing in front of an audience of thousands puts way too much pressure the woman,” says Amy Eisinger, an editor at TheWeddingChannel.com. “You never want to make her feel uncomfortable or pressured to answer right away.” It could lead to a false positive: “Your partner may agree to your proposal to save face in public and then privately retract it,” warns relationship psychologist, Dr. Linda Young. The same goes for proposing in front of family members. “The proposal should be about the two of you and no one else,” says Eisinger. “Overall it’s a great idea to consult the family beforehand but when it comes down to the moment of asking, you should do it when no one else is in the room.”

2. Leave food out of it

As a general rule, any proposal that’s been part of a plot line on a sitcom is a no-go. Proposing at a restaurant with a ring in the dessert is as unoriginal as giving chocolates on Valentine's Day. “I think what any girl really wants is to make her feel special, unique,” says Eisinger. Pulling a move that’s over-used takes the personal aspect out of your romantic moment. It also can lead to sitcom-style moments as one woman discovered when she swallowed the engagement ring hidden in her milkshake. She spent the night in the hospital and had to wait a few days to reclaim her prized possession from the most unfortunate of places.

3. Don't invite the internet into your intimate moment

"To @emilychang – After fifteen years of blissful happiness I would like to ask for your hand in marriage?" "@maxkiesler – yes, i do." To the Twitter community, this was just about the sweetest proposal in the blogosphere. In the real world, however, it's a little sterile. “If you're doing a video or tech driven proposal you should be in the same room to experience it together,” says Young. This way you remember the moment as one you shared together, not with friends or co-workers. 

Then there’s the problem of YouTube. Ever since wedding proposals starting getting attention on the site, people have turned the question into an opportunity for viral fame. Recently, one guy spelled out "will you marry me?" in Super Mario Brother’s gold coins as his bride played the game (see video above). Aside from the preoccupation with posting a viral video, the problem with hi-tech proposals is privacy. "Total strangers or your Facebook acquaintances know about your engagement before your close friends and family do," says Eisinger.

4. Don't propose the day you wed

(Courtesy of Danny Bonaduce/People Magazine)

(Courtesy of Danny Bonaduce/People Magazine)

The recent wedding of reality show star Danny Bonaduce and his manager Amy Railsback was a surprise for everyone but the bride. On a trip with Railsback to Maui, Bonaduce got a call from the hotel’s wedding planner informing him that he was going to walk down the aisle at sunset. Luckily he was a good sport, but a surprise proposal-turned-wedding can almost feel like a kidnapping with no time to think through whether you really want to go through with it all. "You never want the other person to feel pressured into it," warns Eisinger. You could end up estranged before your honeymoon. Thankfully, that wasn't the case for Bonaduce...yet. 


5. Beware of Mother Nature

(Courtesy of Transformers/Paramount Pictures)

(Courtesy of Transformers/Paramount Pictures)

No matter how much you’re meant to be together, sometimes weather gets in the way. One guy had the best intentionshiking up a mountain with his girlfriend to propose. But when they got lost and the temperature dropped, they had to call in the mountain rescue services to save them. Needless to say, he never got the chance to get down on one knee. Another groom-to-be lost the $9000 heirloom he was about to give to his future wife when she dropped it on a rock jetty.  Then there’s Megan Fox who was so thrilled to get a ring from Brian Austin Green that she dropped it on the beach and sent a search party to find it, without success. Moral: Save the outdoors for the honeymoon and pop the question where there's limited potential for natural disaster. mobile crusher

Thursday, December 9, 2010

quartz sand crusher and quartz grinding mill line

There are many crushers in SBM can crush quartz, such as jaw crusher, cone crusher etc. And quartz crusher is the major mining crusher equipment to crush quartzite stone, and SBM is the major mining crushing machine manufacturer in China. Usually, quartz crusher can be called as quartz grinder

Quartz crusher is the major mining crusher equipment to crush quartzite stone, and SBM is the major mining crushing machine manufacturer in China. Usually, quartz crusher can be called as quartz grinder.
Quartz crusher is suitable for crushing materials with particle size more than 3mm. SBM quartz crusher also can used as slag crusher, lime stone crusher, granite crusher, iron ore crusher, marble crusher and so on.
SBM quartz crusher contains PE jaw crusher, JC jaw crusher, PF impact crusher, PFW impact crusher, cone crusher, VSI crusher and mobile crusher. The quartz crushing units can be seen in the vicinity of almost all major cities and towns.

Quartz sand is the important artifical sand used in construction building. In quarry, we can use quartz sand making machine including quartz sand crusher, sand washing machine, and screening machinery in quartz sand plant.

We can design the different quartz sand making plant, according to the requirements about sizt of quartz sand. Different quartz crusher can be used for crushing quartz into different size. Usually the complete quartz sand making production line uses jaw crusher for primary crushing, then cone crusher as fine crusher. VSI crusher is the special quartz crushing machine used in sand making process. It is used to make quarta sand with particle of uniform diameter, so it is also called stone shapping machine.

Quartz sand can be divided into refined the processing plant quartz sand, white quartz sand, ordinary quartz sand. The size of ordinary quartz sand range 5- 220 mesh. The processing plant quartz sand range 5-480 mesh. White quartz sand ranges are 1-0.5mm, 0.5-0.1mm, 0.1-0.01mm, 0.01-0.005mm.

SBM is a manufacturer of gravel crushers and grinder mills, can supplies glass crushing plant, ceramics crushing plant and quartz sand production line. Of course, we can also design quartz crushing plant according to the requirements of customers. SBM not only provide quartz quarry equipment for mining for sale with best prices such as quartz crusher machine and quartz grinding mill, but also the installastion and maintenance service.

http://sbmzhcn.blog.chinabyte.com/

Wednesday, December 8, 2010

Zenith Grinding Mill an Grinding Machine

Shanghai Zenith Grinding Mill And Grinder company is an enterprise which is specialized in making and scientific research of grinding mill(Grinding Grinder). Her serial grinding mills(Grinder) keep advantage in the domestic and abroad market. The main product includes R pendulum grinding mill(Grinder), high pressure grinding mill, high-pressure micro fine grinding mill and super micro fine grinding mill.

Grinding Plant is made of jaw crusher, bucket elevator, electrovibrating feeder, main unit, optional equipment, blower, centrally electric control system, etc. According to customer’s specific requirement, we can choose high pressure suspension grinding mill(Grinding Grinder) or MTM medium speed trapezium mill.

To use the Ball Mill, the material to be ground is loaded into the Neoprene barrel that contains grinding media. As the barrel rotates, the material is crushed between the individual pieces of grinding media that mix and crush the product into fine powder over a period of several hours.
Quite simply, the longer the Ball Mill runs, the finer the powder will be. Ultimate particle size depends entirely on how hard the material you're grinding is, and the time how long the Ball Mill runs. Our Ball Mills have been used to grind glass, powder food products, creat custom varnishes,make ceramic glaze, powder various chemicals, and make Black Powder.

Ball Mill

Ball mill is widely used for milling various kinds of ores or rocks in metal and non-metal mining and building material industry.The main bearing of the ball mill with the shell diameter 900-2100mm is spherical liner bearing; for the shell diameter 2700mm, the main bearing is completely closed self-aligning 120°bearing with strong alloy of high lead and low tin with low hardness, underneath laid with cooling copper piping full of water The bearing is of static pressure structure with high and low pressure united oil lubricating system.

Coal Grinding Mill

The Grinding Milll adopts German advanced-milling technology. Combining the characteristics of similar domestic products, it is a kind of new-typed moderating-speed coal mill, which is developed on the basis of RP; its components are newly developed. This machine is of scientific design and superior performance. The MBM Coal Mill is the optimal milling equipment in electric power, metallurgy and cement industries. It consists of motor, reducer, case, milling device, separator, outlet, coal feeding pipe, loading device, control box and sealing apparatus. The fittings are all of superior performance in the world at present. We ensure good quality and durability of the whole machine.

Advantages Of The MBM Coal Mill:

1. The concrete base weight required is only 3 times of that of other similar machines thus the construction expenses is greatly reduced
2. Small vibration while using and doesn't need shock-absorbing device
3. Large load adjustment scope, so it can run under various environments
4. Can bear very strong explosion pressure
5. The grinding roller adopts new material and new craft, which ensures long service life and low maintenance cost
6. There is gap between the grinding parts; it can start with load or offload

Tuesday, December 7, 2010

Vibration Table,Vibration Table – mining Equipment

The Series 2500 Vibration Table has been very well received. It is lightweight yet rigid. The table’s modular construction makes it very easy for us to assemble and ship a standard table from the size selection chart in three to four weeks.

With the addition of the new Series 320 Vibration Isolation Bearings, a wider range of payloads can be isolated making it easier to add and remove microscope accessories.

And, as always, the isolation is only where you need it - - beneath the instrument. You are free to locate this area on the left-hand side, right-hand side, or in the center as is shown in this picture

This table is available in widths from 30” to 72” wide. The isolation area can be placed on the left hand side, the right-hand side, or in the center as is shown in this picture.

Options available: Keyboard tray, shelves, cable and power management features, monitor stand and casters.

For Compaction of cement cubes and mortar prisms in triple-gang, etc. Molds in accordance with DIN 1164 and EN196-1

vibration table is now used as an alternative method for the fabrication of mortar specimens under ASTM C109. It is an accepted fully automatic specimen preparation machine, allowing your technicians to set up the specimens and walk away. ToniVIB will ensure highly accurate and repeatable test specimens to increase your test production and results.

The table operates with a free swinging vibration plate driven by a magnetic vibrator with a frequency of 3000 oscillations per minute. The user can control the oscillation amplitude, variable from 0.4mm to 1mm. A timer is also included with the unit to ensure time lapse accuracy.

Accessories for the ToniVIB include clamping devices, triple-gang moulds and a feeding hopper. A number of different moulds for standardized testing are available.

Mobile Crushing Plant(Mobile Crusher) is convenient, flexible and strong in mobility, so it can save a large construction capital and relocation. Raw Materials can be broken at the locale without being transported again, and also can be moved with the promotional exploitation of the raw material

stone crusher for marble process

Big size stones are transferred to primary crusher through Vibrating Feeder from hopper for first crushing, then the crushed materials are transferred to Impact Crusher through Belt Conveyor for secondary crushing. The crushed materials will be transferred to the vibrating screen, and separated to different sizes. Those stone crusher aggregate with suitable size will be transferred to the final product pile and those with unsuitable size will be transferred to the Impact Crusher for re-crushing. This forms a closed circuit manifold cycles. The sizes of final products will be graded and separated according to customers' requirements, and the deduster will be attached for the sake of environment protection.

Stone crusher is suitable for crushing materials with particle size more than 3mm. According to the difference between feeding opener and output sizes, they are usually separated: primary stone crusher, secondary stone crusher (medium crusher) and fine stone crusher. BINQ stone crusher can used as slag crusher, quartz crusher, lime stone crusher, granite crusher, iron ore crusher, marble crusher and so on.

Stone crusher is widely used in mining and construction industry, metallurgy industry, building material, highway, railway, water conservancy, chemical materials and many other departments, the BINQ stone crusher contains PE jaw crusher, JC jaw crusher, PF impact crusher, PFW impact crusher, cone crusher, VSI crusher and mobile crusher. The stone crushing units can be seen in the vicinity of almost all major cities and towns.Stone crusher features large crushing rate, high yield, equal product size, simple structure, reliable operation and easy maintenance, economic operating costs etc.

In order to be used for buiding materials or industrial powder, marble must be crushed into small pieces. In this crushing process, we need marble crusher.

Marble crusher is the common marble mining machinery that used for crushing marbles into small size. In marble quarry, there are several mining equipmetns used in marble crushing and screening plant.

Vibrating feeder is the feeding machine that is used to feed stone materials evenly to the crushing machine. There are two types of vibrating feeder: inclined feeder and horizontal feeder. Some models have one motor, while the others have two motors.

Marble stone crusher machine has several types. Marble jaw crusher is the primary crushing equipment; it is used in primary crushing process in marble crushing plant. Impact crusher and cone crusher is the secondary crushing machinery. They are used in secondary or tertiary crushing process.

Vibrating screen is the Separator machine. It is used to screen out the suitable particles throuth screen with different sieve pore size. There are two kinds of screening machine: Circular Motion Incline Vibrating Screen and Linear Motion Vibrating Screens. According to the the screening requirements, we install different screen layers.

There is another marble crusher; it is not only used as crushing machine, but also the screening machinery. It is mobile marble crusher or portable crusher. It is installed crushing machine, vibrating feeder, vibrating screen and belt conveyor together.

Monday, December 6, 2010

A detailed description of Jaw Crusher

SBM jaw crusherJaw Crusher is one of main equipment of stone crushing, is ideally suitable for crushing all kinds of ores and crushing the big size materials, the highest anti-pressure strength of crushed material is 320 Mpa,having two types: primary crushing and secondary crushing.jaw crusher has been sold to 75 countries, the price and quality of jaw crusher is widely recognized, we always stick to be your satisfying partner.

A jaw or toggle crusher consists of a set of vertical jaws, one jaw being fixed and the other being moved back and forth relative to it by a cam or pitman mechanism. The jaws are farther apart at the top than at the bottom, forming a tapered chute so that the material is crushed progressively smaller and smaller as it travels downward until it is small enough to escape from the bottom opening. The movement of the jaw can be quite small, since complete crushing is not performed in one stroke. The inertia required to crush the material is provided by a weighted flywheel that moves a shaft creating an eccentric motion that causes the closing of the gap.

Single and double toggle jaw crushers are constructed of heavy duty fabricated plate frames with reinforcing ribs throughout. The crushers components are of high strength design to accept high power draw. Manganese steel is used for both fixed and movable jaw faces. Heavy flywheels allow crushing peaks on tough materials. Double Toggle jaw crushers may feature hydraulic toggle adjusting mechanisms.

Jaw crushers should be fed a consistent rate of feed that will result in the crushing chamber being kept full at all times. This will result in more stone-on-stone crushing, reducing the wear on the (jaw die) manganese wear plates, creating a more cubical product, and result in more even wear over the length of the jaw die

Generally all material smaller than the discharge gap should be removed (scalped) prior to being fed into the jaw crusher. This will increase the tons per hour of total production by the plant, and reduce wear on the jaw dies. It will also reduce fines production and increase cubical product.

jaw crusherA jaw crusher should not be sized to the maximum size rock that might be fed to the plant, but a size that will handle 95-98% of the material that might be fed to the jaw. Buying to the maximum size of rock that might be fed the jaw will result in buying a jaw crusher that will be under-utilized, difficult to keep choke-fed, cost more than necessary, and have a much higher operating cost. It will cost less to install grizzly bars over the feed hopper to remove the oversize rocks than to buy an over-sized jaw crusher. They can then be manually broken, sold as rip-rap or erosion control or landscaping boulders.

Jaw crushers are typically used as primary crushers, or the first step in the process of reducing rock. They crush primarily by using compression. The rock is dropped between two rigid pieces of metal, one of which then moves inwards towards the rock, and the rock is crushed because it has a lower breaking point than the opposing metal piece.
There are two basic types of jaw crushers, the overhead eccentric style (shown above), and the double-toggle style. Which will work best for a given operation depends upon several factors.

The Crushing form of this series Jaw Crusher is driven-squeezing style. Its working principle is: Motor drives belt and belt pulley, makes moving jaw up and down through eccentric shaft. When the moving jaw is up, the angle between lining plate and moving jaw becomes large, and this will push moving jaw plate close to the fixed jaw plate. During this process, the material is crushed and ground, thus the crushing will be done. When the moving jaw is down, the angle between lining plate and moving jaw becomes small, the moving jaw plate will leave the fixed jaw plate on account of the effect of pulling bar and spring, and then the crushed material will be discharged from the lower opening of the crushing room. With the motor continuously rotating and the material periodically crushed and discharged by the crusher, the mass production can be realized.

Sunday, December 5, 2010

Coal Mill and Ball Milling Machine

Coal mill used at coal fired power plant
In coal fired power plant, coal mill and ball mill is used to grind, pulverize and dry coal before the coal is transmitted the boiler. The coal is feed into the coal mill via a inlet pipe so that the roller coal mill such as Raymond mill and vertical mill can pulverize the coal into particles.

The hot air in the coal mill will lift the coal particles out of the Raymond mill or vertical mill and into the boiler, if the coal particles are too heavy they will drop to the bottom of the coal mill too and will be grind, pulverize again.

The coal flow into the boiler is an important factor for a coal fired power plant. But in fact, it is not easy to measure the coal flow from the coal mill to the furnace. The coal flow out of the coal mill is often estimated based on the incoming coal flow.
Coal milling plant for coal mining

Usually we grind coal into powder to improve the using efficiency. This way is common in Electric Power Plant. In this milling process, coal mill plays an important role.
Coal mill has many kinds, such as ball mill, raymond mill, vertical mill, ultrafine mill etc.
Ball mill is most widely used coal mill. It is suitable in the powder plant, and widely used in powder-making production line including cement, silicate, new-type building material, refractory material, fertilizer, ore dressing of ferrous metal and non-ferrous metal, glass ceramics, etc. It is divided into two rubbing way-the dry and the wet. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material. The ball mill is a key equipment to grind the crushed materials after the material were broken , and carrying on the smashing again.

ball mill liners are mostly made of metal materials, but also a small amount of non-metallic materials. In addition to protect the cylinder liner cylinder, but also the movement of the grinding law of impact, in order to adapt to different working state (crushed or broken bits) requirements, lining the shape and material are also different. When the order to crush the main, require the lining of the grinding capacity of a strong elected body, while lining should have a good fighting performance. High manganese steel ZGMn13 have sufficient impact toughness, and dealt a blow when it is able to work hardening the surface becomes hard wear-resistant. Therefore, the main crushing mill cylinder liner are mostly high-manganese steel manufacturing.

Where the finely ground-based, the lining of the highlights on the relatively small body elected to the ground on the weak, the impact is smaller than strong abrasive. Require lining has a good wear resistance. Domestic mill mainly used for fine grinding cylinder liner materials are generally wear-resistant white iron, chilled cast iron, ductile iron and other rare-earth manganese. In recent years, widely used in rubber liner. Shape rubber lining rubber layering generally peaceful lining of two parts.

According to the working state of the different mill, rubber lining of the bead is also made to be corresponding to different shapes in order to change the tube mill grinding body in the law of motion.

Vertical Mill is a kind of large scale powder mill which is designed specially to solve the problems of low capacity and high consumption of industry mills. With a decade of years research of mills, vertical mill is designed and manufactured based on our advanced design idea, and in combination with the european technology and the market demand. LM Vertical Roller Mill adopts reliable structure and reasonable process flow, integrated with drying, milling, classifier, elevator. Especially, it can fully meets the requirement of clients in the high production of powder, and its main technical and economy indicator reachs the international level.

Raymond mill is the early coal mill, all the finished particles have a good uniformity of finess, with passing screen rate as high as 98%. This is what other machine can not reach.
Ultrafine grinding mill is a equipment which produces thin powder and super thin powder. It will highten pollution and noise by using deduster and muffler, which achieves environmental protection requirement.

Saturday, December 4, 2010

mobile crushing station design for customs

mobile crusher Mobile Crusher Machine is adaptable to all mobile crushing needs, it set up a new range of business opportunities for contractors, quarry operators, recycling and mining applications. it can offer the high efficient and low cost project plants for the client.
Introduction of mobile Crusher machine:
YG938E69 type mobile crushing station is developed according to novel series stone crushing equipment’s design idea, which expands the concept field of coarse crushing and fine crushing. Its design idea is based on the clients’ requirements, which clears faults of the crushing place, surroundings and the complex basic configurations. This series mobile crusher really supply simpler, higher efficient lower cost machines for clients.Superior performance of YGE series crusher machine:
●High-performance crusher of PE series.
●Vibrating feeder and vibrating screen combined with the crusher.
●Belt conveyor under screen, the crusher and the vibrating screen installed all-in-one truck.
●The turning traction axis is convenient to road transport and go deeper of the working site.
●Supporting device installed on the truck is convenient for the truck coming to the working site.
●Vehicle-mounted motor and the control panel is integrated.
Usage and Advantages of the coarse crusher machine
Integrated packaged unit:
Installing form of the integrated equipments eliminates the infrastructure installation work of the dividable parts on the complex working site. Reasonable and compact spatial distribution improves the flexibility of the working site.
Flexibility:
Bottom head of the truck-mounted coarse crusher machine is high. Width of the truck is smaller than the operating semi trailer. The turning radius is small and it is easy for road driving and more convenient for driving in the hash hilly environment. It saves much time from start working.
It is more convenient for the vehicle to enter the exact processing area. It provides for the whole crushing flow with more flexible space and reasonable layout.
Transporting cost is reduced:
Coarse crusher machine can crush the material on the front line. It avoids the redundant procedure of transporting materials away from the site and then crushing.
This will largely reduce the transporting cost. Also the lengthened unit can directly send the materials being crushed to the truck hopper and then leaves the working site.
Immediacy and efficiency:
Integrated crusher machine can work separately, also more flexible technical plan can be provided to satisfy customers' various requirements on mobile crushing and mobile screening according to the material type and products request. The working process and transportation of final material will be more effective and cost can be reduced at most.
Strong adaptation and flexible design:
For coarse, fine crushing and screening system, YG938E69 coarse crusher machine can work separately also can flexibly make up of configuration unit for teamwork. Side discharging hopper produces various transportation methods of final products. Diesel generator in the station can provide power for the station itself and other flowing system.
Stable performance and easy maintenance:
PE series Jaw crusher in the coarse crushing station has the features of high crushing efficiency, versatility, and good final products, lightweight and reasonable structure, excellent crushing performance. Its reliable quality guarantee sets up nice credibility for customers home and abroad.

Mobile Crusher is convenient,flexible and strong in mobility, so it can save a large construction capital and relocation. Raw Materials can be broken at the locale without being transported again, and also can be moved with the promotional exploitation of the raw material, which saves a large number of transportation costs. On the basisof the professional technology, we optimize and introduce newly two large and three small series crushing and screening equipment. The Mobile series is tracked crushing plant, and the portable series is tyred crushing plant. Each large series are divided into three series: rough, middle and fine crushing and screening portable plant. Therefore, it can fully adapt to the various portable crushing and screening, which creates more new business opportunities for customers while reducing the cost of the production.

Friday, December 3, 2010

Newest mobile crushing plant for sale

Mobile crusher also called portable crusher station is fully adaptable to all mobile crushing needs; it set up a new range of business opportunities for contractors, quarry operators, recycling and mining applications. It can eliminate the obstacles of the crushing places and circumstances, and offer the high efficient and low cost project plants for the client. To the client, it is the best choice.

Mobile jaw crusher plant:
Compact, efficient, SBM unveils a new mobile crushing plant equipped with proven heavy duty jaw crusher for contractors.  Contract crushing with excellent mobility, high crushing capacity, good availability.
Mobile jaw crusher plant is to designed to crusher hard rock, granites, any recycling materials, all mineral based demolition materials with the ability to produce clean, precisely sized end products effectively,

Mobile impact crusher plant:  
Mobile impact crusher is ideally suited for crushing medium-hard stone like limestone and all mineral-based demolition materials, such as bricks, asphalt and concrete, and features with high capacity, large feed opening, robust construction, compact transport dimension, good cubicity in end products for long lasting, reliable operation.

Mobile cone crusher plant:
The brand new mobile cone crusher plant is designed for efficient secondary and fine crushing and screening applications. SBM mobile cone crusher features with top quality, high capacity, cubical end products, low wear part cost, is the most efficient and flexible secondary/tertiary crushing plant in the market for accurate screening and compact transport dimensions

If you want to know more about SBM mobile crushing plant, please visit http://www.rockscrusher.com/product/mobile_crusher/portable_mobile_crusher.html

Thursday, December 2, 2010

what is a rock crusher ?

A rock crusher, as the name implies, is a device that crushers large rocks into smaller, more manageable pieces. Utilized primarily in the construction and road-building industries, crushers can process natural rock and reclaimed materials like concrete to produce aggregate products such as gravel, rock dust, or rock fill used for erosion control or landscaping. The basic design of most crushers includes a hopper at the top where raw material is held before being fed into the crushing mechanism by either gravity or a belt drive. After the material is crushed, it is then discharged through an opening at the bottom where it can be further processed. The several types of crusher include jaw crushers, impact crushers, cone crushers, gyratory crushers, and roller crushers.

Although rock crushers generally are large and heavy, a new generation of rock crushers now offers portability and on-site crushing, greatly improving production by eliminating transportation time to fixed plants. Some of these newer models combine the actions of jaw and roller crushers and have a wide range of compression strengths. As technology advances, industry heads can expect even more efficiency, which will ultimately translate into greater cost savings.

Wednesday, December 1, 2010

how to buy a ball mill ?

ball mill is widely used in cement, silicate products, new building materials , refractory materials , fertilizer, ore dressing , and black glass ceramic and other non-ferrous metal production industries, and other various ore grindability of materials for the dry and wet grinding .

Ball Mill is crucial equipment for grinding after materials are crushed. The grinder machine is an efficient tool for grinding various materials into powder.

The application of Grinder Machine: Ball mill 
    Ball Mill is widely applied in cement industry, chemical industry, new building materials, fire-resistant materials, fertilizer, porcelain and glass industry etc. The Ball mill has two ways of grinding: dry process and wet process

   Ball Mill Structure: 
    Compared with other grinder machines,especially vertical mill, the Grinder Mill is made up of feeding part, discharging part, gyre part, transmission part (reducer, small transmission gear, motor, and electrical controller) and so on.
    The hollow axis of  Ball mill adopts the cast steel, and the lining can be replaced. The big rotary gear is forged from cast rolling gears.
    The barrel body of the Ball mill is inlaid with wearable plates.
    The Ball mill runs steadily and efficiently.

how does a magnetic separator work

The mineral slurry flows into the cell through box feeder, the mineral particle is loose under the function of water flow of feeder water pipe when they flow into the cell. Affected by magnetic field, the magnetic particle swarm together and form magnetic cluster or chain. With the magnetism of mineral slurry, the magnetic cluster or chain moves toward the magnetic pole, and is absorbed to the cylinder. Because of the polarity of magnetic pole, the revolving directions alternate constantly, and remain fixed when it is working. When the magnetic cluster and chain go round and round along with the cylinder, the mingled gangue and other non-magnetic ore fall down due to the mixing phenomena produced by alternation of magnetic poles, and it is concentrate that is absorbed to the cylinder surface. The concentrate moves to the end of magnetic system where the magnetism is weakest along with the revolving cylinder, and is discharged into concentrate tank by the current ejected by the discharging-ore pipe. The non-magnetic or weak magnetic remained are discharged along with the mineral slurry, and they are gangue.

Ball Mill is crucial equipment for grinding after materials are crushed. The grinder machine is an efficient tool for grinding various materials into powder. SBM in China is a professional manufacturer of Ball Grinding mill.
The application of Grinder Machine: Ball mill
    Ball Mill is widely applied in cement industry, chemical industry, new building materials, fire-resistant materials, fertilizer, porcelain and glass industry etc. The Ball mill has two ways of grinding: dry process and wet process
    Working Principle of  Ball mill
    This Grinder Machine, a horizontal type and tubular running, has two warehouses. The Grinder mill runs along the outside gear. Materials spirally and evenly enter the first warehouse along the input hollow axis by input devices. In the warehouse, there is a ladder scale board or ripple scale board. Steel balls of different specifications are installed in the scale board of the Ball mill. When the barrel body rotates, centrifugal force is produced. At the same time, the steel balls are carried to some height and then fall to grind and strike the material. After being grinded coarsely in the first warehouse, the material then enters into the second warehouse of the Ball mill for regrinding. In the end, the powder produced by the Ball mill is discharged by output material board.

Bauxite ore crusher and bauxite crusher

Bauxite ore is important mineral and can be used many fields. Bauxite mining is common in the world and bauxite ore crusher is necessary mining equipment in the mining of bauxite. SBM Machinery can supply kinds of bauxite ore crusher and complete bauxite ore crushing plant.

Main use: Bauxite ore is of versatile use: 
(1) Aluminium smelting industry. for defense , aerospace, automobile , electrical device, chemical, and other daily necessities. 
(2) Casting: processing bauxite into a fine powder and casting mold after make clinker, also for military, aerospace, communications, instrumentation, machinery and medical equipment sectors.
(3) Refractory products. The refractoriness of high-alumina clinker up to 1780 ℃, chemical stability is strong, good physical properties. 
(4) Aluminosilicate refractory fibers, light weight, high temperature resistance, good thermal stability, low thermal conductivity and heat capacity, and of small mechanical vibration and so on. It is used for iron and steel, nonferrous metallurgy, electronics, petroleum, chemical , aerospace, atomic energy, defense and other industries.
(5) to use magnesia and bauxite clinker as raw material, adding some appropriate binder for casting ladle barrel lining, the effect is quite good . 
(6) manufacturing compounds for alumina cement, abrasive materials, ceramic industry and chemical industry of aluminum. 
One of the most important uses are: for aluminum refining, refractory and abrasive materials, and as raw materials of high alumina cement.

Bauxite Mining and Crushing Plant

After the caprock layer has been broken by blasting or ripping, it’s time to mine bauxite.  The average thickness of the bauxite is about 4m to 10m.  An excavator or loader is used to load the bauxite onto haul trucks for transport to the first crusher. There is a very important procedure before extracting aluminum from bauxite mine that is bauxite crushing and bauxite grinding.

Generally SBM crusher or SBM grinding mill crush the raw materials to be required fineness before used to produce aluminum. Large 190 ton capacity haul trucks transport the bauxite ore to the central crusher.  The crusher is used to break the ore down to a smaller size suitable for transport along the conveyor belt to the refineries. The common bauxite ore crushers are Jaw crusher, Symons Cone crusher, impact crusher, mobile crusher etc. The crushing plant is made up of a number of components that include a vibrating screen, a Jaw crusher and sizers.  Fine material drops through the vibrating screen while larger material passes over the screen to the Jaw crusher that breaks up the large rocks.  The material that passes through the vibrating screen and Jaw crusher is collected and passed through the sizer that further reduces the size of the material before it is passed onto the conveyor belt.  The final size of the crushed bauxite ore is approximately 7.5cm or less in diameter. Conveyor belts are used to transport the crushed ore to the destination.

All the equipment in the mining bauxite and crushing can be found in SBM. SBM supplies a complete solution to the bauxite mining project.