The ultrafine mill can be divided into two types according to the processing particle size of materials, one is crusher and the other is ultrafine mill. Generally, the fineness of materials crushed by crusher is large; The fineness of materials processed by the ultrafine mill is small, such as 300 mesh fine powder small ultrafine mill. Customers choose the appropriate machine according to the size of materials they need.

Small ultrafine mill is a small ultrafine mill, which is applied in small mining and has high economic performance. Generally, squirrel cage motor is used in combination with torque limiting hydraulic coupling.

Squirrel cage motor is characterized by high speed and low torque, but it is usually started by soft starting device. This device enables the motor to start under no-load, and then connect the mill when the rated speed is reached.