Large Output VRM Vertical Roller Mill Coal Mill In Cement Plant 90t/H

90t / h Large Output Coal Grinding Equipment Coal Vertical Mill

Working principle of coal vertical mill:
The raw coal falls to the center of the grinding disc through the feeding pipe, and the grinding disc rotating at a constant speed disperses and flattens the raw material outwards evenly with the help of centrifugal force to form a material bed with a certain thickness. crushed and crushed.

Under the continuous driving of centrifugal force, the material continuously moves to the outer edge of the grinding table. When the material leaving the grinding table encounters the hot gas entering the mill through the wind ring, it rises and enters the separator through the middle shell of the mill. During this process The material in the medium and the hot gas conduct sufficient heat exchange, and the water is quickly evaporated.

The powder separator controls the particle size of the finished products at the outlet of the roller mill. The particles larger than the specified size are separated and fall back to the grinding disc. The materials that meet the fineness requirements enter the finished product warehouse through the powder separator.

Technical DATA

Product advantages:

1. Large production capacity, low energy consumption, green and environmental protection.
2. The roller sleeve can be turned over for use, which not only helps to increase the output of the coal mill, but also reduces wear and prolongs its service life.
3. Install explosion-proof devices to ensure safe production. There is an explosion-proof valve on the upper shell to prevent the explosion of pulverized coal in the mill and ensure the safe use of the equipment.

Structural features:
1. The foot disc-shaped grinding disc and the tire-shaped roller sleeve used in the coal vertical mill are more suitable for coal grinding.

2. The roller bearing does not need special seal. The grinding roller device adopts a pair of self-aligning roller bearings. The bearing sealing cavity extends out of the casing and does not come into contact with the dust-containing gas. Therefore, as long as a simple seal is required, the grinding roller bearing can be prevented from entering dust, and the fan does not need to be sealed.

3. The transmission part of the mill does not need auxiliary transmission device.

4. The slag discharge part is simple. The coal vertical mill has less slag discharge, and the slag discharge port is equipped with a cover plate, so there is no need to install a slag discharge valve.