sbmzhcn Blog find crusher and grinding mill in China

September 11, 2010

Roll crusher features and application

Filed under: Uncategorized — Tags: , — sbmzhcn @ 1:46 am

Roll crusher  is brick and tile industry using the most crushing equipment, is the oldest of broken machinery, now, roll crusher through continuous development and innovation, their family members have a very rich, and almost as long as a brick tile factory where, you can see the shadow roll crusher.
Roll crusher should be called the "Drum Roll Crusher," English name "ROLL CRUSHER", which means "drum crusher." In general, it is relying on two opposite rotating roller friction generated when the role of the material into the crevice between the two rollers by continuous extrusion and broken. Roll crusher uses a very wide range of chemical mines, coal mines, steel mills and ceramic factories has its own battlefield, of course, brick is the roll crusher where the most used, it is mainly used for crushing medium hardness of these materials, such as: bauxite, phosphate rock, zirconium quartz, clay, shale, coal and so on.
Roll crusher of the biggest advantages is the simple structure, easy manufacturing process, its power consumption is small, higher than production. Roll crusher of the raw materials to adapt to very wide, for more than 25% moisture content of materials, on the roll crusher can "ease" to deal with, which is unmatched by many other broken equipment. It is for these reasons, roller crusher is so favored by the brick.
In production practice, roll crusher continuously improved and perfected, the new varieties and types of emerging greatly enriched the brick raw material handling means.

coal crusher

August 31, 2010

What is a vertical roller mill

Vertical 

roller mill

Vertical roller mill ( grinding ) is the dawn of Heavy Industry and Technology to address the industrial mill output is low, energy consumption and higher technical problems, absorb advanced technologies combined with our years of design and manufacture of advanced mill concept and market demand, after years of concentrated design improved Large grinding equipment . Vertical roller mill using reasonable and reliable structural design, with advanced technological process, set drying, grinding, powder selection, improve the integration, especially in the large grinding process, can meet customer demand, the major technical, economic indicators reached the international advanced Level .

Vertical roller mill applications
  • Special glass fiber industry ‘s largest high yield pyrophyllite powder fineness of grinding ;
  • Private coal gangue powder industry powder produced a large output ;
  • Special chemical industry raw materials, high production of various chemical powder production;
  • Non-metallic mineral industry, a variety of low, medium and high hardness of the hundreds of species of large-scale ore powder production preparation;
  • Hundreds of species of other big industry production of a variety of materials, powder preparation;
Vertical roller mill Features:
  • operating costs low:
    1. mill efficiency, vertical roller mill with roller compacted ground and feed bed materials, low energy consumption, milling system power consumption 40-50% lower than the milling system, and with the increased humidity of raw materials, section Electric effect is more significant.
    2. metal loss, liner and roller with a special material, long life, reduced operating costs, high utilization ;
    3. into the grinding material particle size of up to roller diameter of about 5%, usually 40 ~ 100 mm, it can be saved two medium-sized vertical mill grinding.
  • construction costs low:
    1. The grinding process is simple, and milling system can be reduced compared to an area of about 50%, reduced by about 70% of construction costs, building size, occupy less space .
    2. set of broken grinding, drying, grinding, grading conveyor in one, the system is simple, compact . Can open layout, making low-cost construction .
  • easy and reliable operation :
    1. with a control device, can realize remote control, easy to operate .
    2. The roller cover and the disc has to prevent direct contact liner quality control device, to avoid fragmentation of severe vibration .
  • drying ability, vertical mill using air transportation of materials, the grinding of materials for large water inlet temperature can be controlled so that products reach the final water, drying in the grinding of water up to within 12 to 15 % of the material, even drying Dry milling, drying only water for 3 to 4 % of the material .
  • stable quality, uniform particle size distribution . Material in the mill residence time is short, easy-to- size and chemical composition of the product testing and control, product quality and stability .
  • easy maintenance, through the maintenance tank, turn rotating arm, roller, liner can be replaced in a very short time .
  • environmental protection, energy saving ; vibration, low noise, low dust, clean operating environment to meet the requirements of environmental protection .

Source Article:sbmzhcn.appspot.com/2010/08/31/245002.html

August 27, 2010

Roller mill and ball mill

Filed under: grinding mill — Tags: , , , — sbmzhcn @ 2:58 am

The ball mill’s general explanation:

ball mill machine

Using the whereabouts of the grinding ball and pebbles (such as impact) and polishing and grinding ball mill and wall materials and mixed grinding. When the ball mill turns, due to the wall and grinding ball grinding of the friction between the role. According to the direction of rotating grinding body after falling on again. This material is continuously by grinding. According to the shape of the body can be divided into cylinder ball mill , cone ball mill and tube mill (also called tube mill).

Advantage:
  1. (1) can be used to dry or wet grinding mill,
  2. (2) operating conditions, crushing machine in airtight, not within the dust flying,
  3. (3), reliable operation, grinding, and convenient to replace body cheap,
  4. (4) can be intermittent operation, also can be operated continuously,
  5. (5) crushing explosive materials, grinding can be filled with inert gases to replace the air.
Faults:
  1. (1) bulky heavy,
  2. (2) operation when strong vibration and noise, must have the solid foundation,
  3. (3) working efficiency, low energy consumption, bigger,
  4. (4) grinding and the friction loss, and will contaminate products. Widely used in crushing hard material feeding.

vertical roller mills

Slag grinding

Blast furnace slag water quenching process as active mixing materials in the cement industry
That is widely used, application and clinker and plaster mixed with materials such as after grinding.
According to Chinese standard, ordinary cement slag cement admixture of 15% below, slag cement supreme mixing

For 70 percent, the actual production of slag cement admixture of general only 30% ~ 40%. Affect ore
Slag is the main reason of the admixture of clinker and slag mixed grinding, due to the relatively difficult slag grinding (mine The slag grinding clinker higher than 30%), the slag cement clinker components, components of coarse than Activity to improve, thereby affecting cement strength.

If the slag grinding to separate 4500cm2 / g more fineness and high-grade pure Portland again
Cement mixed, not only can improve the admixture of slag cement, and can be improved
Cement and concrete phychemical properties of slag, give full play to the potential value.
From the middle of the 1990s, the world more and more cement and steel enterprises Start using a separate grinding process of slag powder preparation. The equipment adopts mainly have three: the ball Roller grinding mill, and roller machine, roller mill by simple process, drying system has strong ability of low power consumption and Advantages and rapid development, China’s largest steel enterprises most slag has been built Grinding mill production line.
φ 3.0 x 13m ball mill also can use single fan circle flow system.
From the mixture of slag mix station, feeding grinding mill , out of the ground
Bucket to efficient classifier, elected powdered sorting by belt conveyor to mine
Slag grinding with new feeding grinding, with a fine powder with air into the bag dust collector, take mine
Slag finished by air slides, hoist, slag repository to purify the air after discharge
The atmosphere.

Cross From:sbmzhcn.appspot.com/2010/08/25/Roller-mill-and-ball-mill.html

the classification of grinding mill

1.Ball Mill

Ball MillThe ball mill  is a key equipment to grind the crushed materials, and the ball mill is 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, and the ball mill can grind various ores and other materials with dry type and wet type. There are two kinds of ball mill, grate type and overfall type due to different ways of discharging material. The ball mill is a horizontal rotating device transmitted by the outer gear. The materials are transferred to the grinding chamber through the quill shaft uniformly. There are ladder liner and ripple liner and different specifications of steel balls in the chamber. The centrifugal force caused by rotation of barrel brings the steel balls to a certain height and impact and grind the materials. The ground materials are discharged through the discharging board thus the grinding process is finished.

2.LM Vertical Roller Mill

LM-series vertical roller mill is one advanced mill, adopting top technology domesic and abroad, and based on many years mill experiences. It can crush, dry, grind, and classify the materials.
LM series vertical roller mill can be widely used in such industries as cement, power, metallurgy, chemical industry, non-metallic mineral. It is used to grind granular and powdered materials into powder with required fineness.

3.MCF Coarse Powder Mill

The MCF Coarse Powder Mill series is a kind of new high-tech milling machine to meet the requirements of sand processing customers. Based on years research experience of our experts in the milling industry and considering recommendations & requirements of domestic and foreign clients, it is the ideal equipment to replace Raymond Mill, mill, ball mill, and other traditional which only process powder materials. It is high-efficiency equipment and widely applied in quartz sand, silica sand, foundry sand, fine sand and other sand abrasive industry. By being a component of closed production lines, it can produce various size products of better effect.

4 .raymond mill

Raymond MillFrom the shape look like a steel container to erect , with inlet , outlet and central parts of the feed port . MPS mill shape and some approximation . Raymond mill  stick rotation axis is vertical , MPS mill grinding stick rotation axis is the approximate level . Within the lower part of a motor driven mill grinding mill rotation will need to stick with the grinding material crushing or grinding through the air inlet of the wind blowing finished materials , mill within the upper part of separator can be separated coarse and fine powder , and then passed through the mill The wind machine out of the outlet from the collection

5.coal mill

coal mill must be crushed before grinding. The crushing plant common includes Vibrating feeder as feeding material to Jaw crusher, which is as primary Jaw crusher. If need secondary crusher, Cone crusher or Impact crusher can be used. After primary crushing, the coal can be feeding to Ball mill to fine grinding. To increase Ball mill effective, the vertical coal mill or coarse powder mill can be setted before Ball mill as pre-grinding.

Cross From:sbmzhcn.appspot.com/2010/08/26/87009.html

August 25, 2010

Roller mill and ball mill

Filed under: Uncategorized — Tags: , , , , — sbmzhcn @ 8:18 am

The ball mill’s general explanation:

ball mill machine

Using the whereabouts of the grinding ball and pebbles (such as impact) and polishing and grinding ball mill and wall materials and mixed grinding. When the ball mill turns, due to the wall and grinding ball grinding of the friction between the role. According to the direction of rotating grinding body after falling on again. This material is continuously by grinding. According to the shape of the body can be divided into cylinder ball mill , cone ball mill and tube mill (also called tube mill).

Advantage:

  1. (1) can be used to dry or wet grinding mill,
  2. (2) operating conditions, crushing machine in airtight, not within the dust flying,
  3. (3), reliable operation, grinding, and convenient to replace body cheap,
  4. (4) can be intermittent operation, also can be operated continuously,
  5. (5) crushing explosive materials, grinding can be filled with inert gases to replace the air.

Faults:

  1. (1) bulky heavy,
  2. (2) operation when strong vibration and noise, must have the solid foundation,
  3. (3) working efficiency, low energy consumption, bigger,
  4. (4) grinding and the friction loss, and will contaminate products. Widely used in crushing hard material feeding.

vertical roller mills

Slag grinding

Blast furnace slag water quenching process as active mixing materials in the cement industry
That is widely used, application and clinker and plaster mixed with materials such as after grinding.
According to Chinese standard, ordinary cement slag cement admixture of 15% below, slag cement supreme mixing

For 70 percent, the actual production of slag cement admixture of general only 30% ~ 40%. Affect ore
Slag is the main reason of the admixture of clinker and slag mixed grinding, due to the relatively difficult slag grinding (mine The slag grinding clinker higher than 30%), the slag cement clinker components, components of coarse than Activity to improve, thereby affecting cement strength.

If the slag grinding to separate 4500cm2 / g more fineness and high-grade pure Portland again
Cement mixed, not only can improve the admixture of slag cement, and can be improved
Cement and concrete phychemical properties of slag, give full play to the potential value.
From the middle of the 1990s, the world more and more cement and steel enterprises Start using a separate grinding process of slag powder preparation. The equipment adopts mainly have three: the ball Roller grinding mill, and roller machine, roller mill by simple process, drying system has strong ability of low power consumption and Advantages and rapid development, China’s largest steel enterprises most slag has been built Grinding mill production line.
φ 3.0 x 13m ball mill also can use single fan circle flow system.
From the mixture of slag mix station, feeding grinding mill , out of the ground
Bucket to efficient classifier, elected powdered sorting by belt conveyor to mine
Slag grinding with new feeding grinding, with a fine powder with air into the bag dust collector, take mine
Slag finished by air slides, hoist, slag repository to purify the air after discharge
The atmosphere.

July 1, 2010

vertical roller mill

Vertical roller mill has many different forms, but it works basically the same. All of these forms of machine comes with roller (or the equivalent of roller grinding parts), and roller along the track of the disc at the level of circular movement imposed by external grinding roller in the vertical pressure on the disc on the material being the joint action of compression and shear, and to crush.
Material grinding process: motor through reducer rotating drive disc, the material falls from the mill under the central entrance and exit, under the action of centrifugal force to the disc edge by the roller to move and the crushing, grinding out lap after the material was speed up the flow to and vertical mill with one of the separator, after the meal by the separator back to the mill, the re-grinding; powder while grinding out with air, dust collection equipment in the system to collect down, that is, products . Established through the mill in the pneumatic conveying of materials, a larger air flow rate, which can use waste heat of gas, at the same time dry grinding operations.

Vertical Roller Mill Principle:
Used in cement grinding production grinding parts of its various forms, there is a cylinder, cone type, ball type, etc., and roller surface is also flat, curved, convex round noodles. Applied to the grinding roller to roller grinding along the track bed in close contact with the material strength of a spring pressure, hydraulic, etc..

How Vertical Roller Mill Works:
It has two pairs of grinding rollers, each pair of roller composed of two narrow rollers, mounted on the same axis and can rotate at different speeds. There are two circular disc slot, and roller to the tire shape, work pressure in the tank. Disc roller and the relative sliding velocity between small and roller can swing, even if the roller sleeve and the disc after the liner wear can guarantee a good abrasive, will not affect the grinding effect. Roller symmetrical structure, one side can be upside down after use and wear.
Material grinding process: hydraulic pneumatic roller device through the pressure applied to the material on the crushing of materials, the materials have been moved to crush the edge of disc, from the disc around the nozzle from the exhaust air to improve these materials to Separator.Meal to separate returns after a concentrated mill, fine powder was collected in the precipitator unloading. In the gas flow is small, the meal can not be increased to enhance air flow, they would fall through the nozzle discharged outside the mill, bucket elevator to be transported to the feeder of vertical roller mill, and was re-grinding mill feed people. This cycle features of the way there:
① ring by adjusting the air valve, can change the product fineness can Shide mill bed load material uniformity and stability, improving the grinding efficiency;
② coarse particles in the external circulation, helps reduce Fan power consumption and overall system power

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