Coal Mill

Coal mill is a very important auxiliary equipment for coal powder furnace. It has three stages to process the coal lump into powder, they are crushing, impacting and grinding. Coal mill can not only used for processing coal, but also many other materials, like petroleum coke, woody lignite etc. and widely used in mining, construction and electric power plant.

Compared with the traditional mill, the coal mill has advantages of higher capacity, more convenient operation, safer usage and more stable performance.

Common Used Coal Mills

Coal mill is used to grind and dry the coal particles before they are fed into the boiler. The coal is fed into the mill through an inlet pipe so that the coal mill such as ball mill or vertical mill can process the coal into small particles or powder.

Working Principle Of Ball Mill

The motor driving the main body rotating through reduces and the large gear. And there is grinding media-the steel ball in the main body. The steel ball will be lifted to a certain height by the centrifugal and friction force, and then falls down by gravity. The raw materials enter the main body through the feed opening and being ground by the moving balls. After ground coarsely in the first warehouse, the materials then enter into the second warehouse for regrinding. And then the ground materials will be discharged out of the mill.

Working Principle Of The Vertical Mill

The coal is transferred to the hopper by the elevator and then being fed into the grinding cavity evenly and continuously by the vibrating feeder. The ground powder is flowed by the airflow of the fan and then graded by the classifier. The required size powder will enter the collecting system through the duct, after separating and collecting and discharged from the outlet duct.

  • Higher yield;
  • Convenient to operate;
  • Safer usage;
  • More stable performance.

Related equipment used in this plant:

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