Before finely operation is needed heat treatment, the moisture content of the grinding material in ball mill is about to condition of air dry. Only meeting this lower moisture state, grinding and burning fuel inside the ball mill is beneficial.

For the grinding operation of ball mill, all kinds of coal need be grinded must be through being dried, but there are part of the coal is can be properly dried in the grinding of coal, in order to realize this operation, it must be installed special equipment for coal drying operation before the coal mill in pulverized coal preparation system, you also need to cut fuel moisture content to a specific value. After a detailed analysis, the final moisture in pulverized coal is gained by grinding dry powder in the process of fuel inside the ball mill.

The dry moisture content of coal is greater than 10% -20%, the use of the device is at the mill drying equipment place, so that the materials can be dried sufficiently to meet the actual production of ball mill need.