Roller Mill

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

Structure Of Roller Mill
The main structure consists of separator, roller, mill table, pressurization device, deceleration machine, motor, shell body, etc.
Separator is an important part which determines the size of the final powder. It is composed of gearing with adjustable speed, rotor, guiding vane, shell body, cone filler for coarse powder, blower.

Application Of Vertical Roller Mill:
Specialized for the high production of superfine pyrophyllite powder making in glass fiber industry.
Specialized for the high production of gangue powder making in coal industry.
Specialized for the high production of various of chemical raw material powder making in the chemical industry.
Vertical Roller Mill is a necessary equipment for the high production of mineral powder in the non-mental mine industry and large scale powder making in many other industries.

Working Princeple Of Roller Mill:
As chart 1 shows, motor runs under the condition that speed reducer drives the Nether millstone. The materials fall into the center of device through lock air feeder, and hot air comes into mill through air inlet. Under the function of centrifugal force, the materials move to the edge of the Nether millstone as it runs and rollers will grind the materials when they come by the annular chute. The grinded materials will be taken up by air circulation and the bigger powders will fall down for regrinding. Qualified powders will be collected by collecting device as to be final product. Materials containing water will be dried when they contact with the hot air. Different humidity materials can be dried to the requirement through adjusting the temperature of hot air. Adjusting the separator can get the required fineness powders.

Main Advanced Features of roller mill:
1. Low Investment Cost
This mill itself can crush, dry, grinding, classifying, so the system is simple, and occupation area is about 50% of ball mill system. In addition, it can be installed outside, so it will reduce a large number of investment costs.

2. Low Operation Cost
High efficiency: roller compacted materials directly onto the grinding disc, so power consumption is low. Compared with ball mill, it saves energy consumption by 30% ~ 40%.
Less wear and tear: As the roller is not in direct contact with the disc, and material of the roller and liner is high quality, so life lime is long.

3. High Drying Ability
As the hot air inside contacts directly with the material, drying ability is higher, and it saves energy. By regulating the air temperature, it can meet requirements with diffirent humidity.

4. Simple and reliable operation
It is equipped with automatic control systems, so remote control makes it easy to operate.
Vertical Roller Mill is equipmented with one device,which prevents the roller from contacting with the liner directly, and avoids the destructive impact and severe vibration.

5. the stability of product quality
As the material stays in the mill for a short time, it is easy to detect and control the product particle size and chemical composition, to reduce duplication of milling, stable product quality.

6. Maintenance convenience
By reparinging fuel tank, rotating the arm, it is fast to replace the roller sleeve, and liner, and reduce the downtime loss.

7. Environmental protection
It is with small vibration, low noise, and the overall sealing. The system works under negative pressure, so there is no dust going out. It meets the requirements of the state Environmental Protection.

Main Technical Data of roller mill: