Cement vertical mill

Description

Cement vertical mill is mainly used in cement industry with annual output of 30, 25, 20, 10, 88,000 tons and other industries to meet users' grinding requirements for different yields and different materials, and reduce a large number of operating costs every year. In improving the technical level and product output, saving energy, improving the operating environment, reducing noise and pollution, enhancing adaptability and other aspects to play an immeasurable long-term benefit.

In the process of powder production, the main motor drives the mill plate to rotate through the reducer, while the hot air enters the vertical mill body from the air inlet, the material falls to the center of the mill through the feeding pipe, the constant speed rotating mill plate with the help of centrifugal force will evenly disperse and smooth the raw material outward, so that it forms a certain thickness of the material bed, and the material is rolled by several grinding rollers on the mill plate at the same time, and is crushed. Under the continuous drive of centrifugal force, the material continues to move to the outer edge of the disk. When the material leaving the disk encounters the hot gas entering the mill through the wind ring and rises accordingly, it enters the separator through the middle shell of the mill. In this process, the material and the hot gas carry out sufficient heat exchange, and the water is quickly evaporated. The separator controls the particle size of the finished product at the exit of the roller mill, the particles larger than the specified size are separated and fall back to the mill, and the materials that meet the fineness requirements enter the dust collector through the separator, and the collected finished products are sent to the finished product bin.

The vertical mill is composed of a grinding disc, a grinding roller, a powder separator, a pressure device, a monitoring device, a transmission device, a water spraying system, and a coarse powder external circulation system

1, grinding disc: including guide ring, wind ring, baffle ring, lining plate, disc body, scraper and lifting device. 

2, grinding roller: roller sleeve is easy to wear parts, requiring enough toughness and good wear resistance.

3, powder separator, can be divided into static, dynamic and high efficiency combined powder separator three categories

4, pressure device: hydraulic device, energy storage.

5, monitoring device: rocker arm monitoring, vibration monitoring.

6, transmission device: motor, reducer.

7. Water spraying system: reduce temperature and stabilize material layer.

8, coarse powder external circulation system: elevator.

Performance Advantages

• 1, high grinding efficiency, low power consumption;
• 2, less metal consumption per unit product;
• 3, the process is simple, while completing the material grinding, drying, powder selection function;
• 4, small footprint, compact layout, light weight of system equipment, low civil construction investment.

Working Principle

Cement vertical mill is mainly used for grinding cement and other raw materials, its working principle is: raw materials through the two air lock valve, the feeding pipe falls to the center of the disk, the horizontal and vertical rotation of the disk with the effect of centrifugal force to evenly disperse the raw materials, smooth. Make it form a certain thickness of the bed. In this process, the material is simultaneously rolled by a number of grinding rollers on the mill disc, and is broken under the action of the pressure roller.

Under the continuous drive of centrifugal force, the material continues to move to the outer edge of the mill, and the material leaving the mill encounters the hot gas entering the mill through the wind ring and then rises through the middle shell of the cement vertical mill into the separator (powder separator). In this process, the material and the hot gas carry out sufficient heat exchange, and the water is rapidly evaporated.

More Pictures

Question&Answer

Q:How to deal with serious wear of roller and grinding disc?

A:The grinding material (metal objects can not enter the mill) must meet the requirements of the cement vertical mill, check whether the limit height and the balance between the roller are consistent, and control the grinding pressure.

Q:Vertical reducer oil leakage how to do?

A:Find the oil spill site, smooth the oil spill site with an Angle grinder, sandpaper and other tools and clean it with anhydrous ethanol, then seal the oil spill site with a curing material and apply a layer of molecular composite material on the outside.

Q:What causes the mill to vibrate badly?

A:There are many reasons for the vibration of the mill, such as the temperature changes in the grinding and grinding, the nozzle ring is blocked, the vibration meter fails, the hydraulic device pre-pressure is unbalanced, the powder selector speed is too fast, etc., find the problem and make adjustments, if it is still not solved, you have to call the manufacturer.

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