Dry ball mill and wet ball mill structures are made by feeding part, discharging part, turning part and driving part (reducer, small transmission gear, motors, electrical control) and other major components. The difference dry ball mill and wet mill structure at: dry ballshaped spout is straight, there is also an induced draft system, dust emission. Wet ball mill is a hornshaped spout, builtin screw device, convenient discharged material. Most on the market for wet ball mill.