The requirements of each type of ultrafine vertical mill for the moisture content of materials are different, but the production efficiency of any type of equipment will be greatly affected by the water content.

When the moisture content of the material is high, the material is easy to adhere to the grinder, and it is also easy to block in the process of feeding, which results in the reduction of the grinding capacity and the reduction of production efficiency.

At the same time, it will block the circulation air duct, discharge port of analyzer, etc., so the water content of materials should be controlled. Generally, the moisture content of the material can be controlled by drying operation before production.

The fine powder contained in the material also affects the production efficiency of the grinder. Because these fine powder is easy to adhere, affecting the transport. When the fine powder is more in the material, it is easy to adhere to the equipment during grinding, which affects the transportation. For such materials with more fine powder, the sieve shall be conducted one time in advance.