Ball mill for non-metal ores has been recently invented and developed by EMI based on customers’ requirement. It is widely used for grinding of quartz stone, potash feldspar, kaolin and other non-metal ores. Its liner, medium ball, feeder and discharging mouth adopt non-metal material, the purpose is to prevent non-metal materials during grinding process. In general, liner is made of high aluminium plate, medium balls are made of high aluminium material, feeder and discharging mouth are made of stainless steel. Â