... , with a long replacement cycle. It's the ideally suitable grinder machine for grinding calcite, limestone, calcite, dolomite, kaolin, bentonite, ... pyrophillite, barite, meerschaum, fluorite, potash ore and other more than 200 kinds of materials that Moh's hardness is below 6 ... we produce grinding machine,such as High Pressure Micro-powder Grinder, Raymond Mill .And Raymond Mill is our mainly grinding ...