The grinding speed of the grinding machine is very slow, the grinding capacity is small and the production efficiency is low. Therefore, in the daily use of equipment, it is necessary to strictly follow the instructions of vertical roller mill, grinding the materials with appropriate hardness.

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.

The fine powder contained in the material also affects the production efficiency of vertical roller mill. 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.