MQ series of ball grinder is primarily used in the grinding operation of mine, cement, fire-resistant materials and chemical industry, etc. In the light of the different discharging methods, the ball grinder is divided into MQG series of dry grinding grate ball mill, MQG series of wet grinding grate ball mill, MQY series of wet overflow ball mill, MQZ series of Peripheral discharge ball mill. In the light of the types of the liners, the ball grinder is divided into A series (high manganese steel lining plate and magnetic liners) standard form and B series (rubber liner, high aluminum liner, silica liner, ceramics liner) energy efficient form. In the light of transmission methods, it is divided into edge transmission ball grinder and center transmission ball grinder.