High Pressure Micropowder Grinder Heavy Industry. High Pressure Micropowder Grinding Mill can grind calcite, limestone, calcite, dolomite, kaolin, bentonite, talc, illite, pyrophillite, barite, meerschaum, fluorite, potash ore and other more than 200 kinds of materials that Moh's hardness is below 6, High Pressure Micropowder Grinding Mill …