barite grinding mill is usually used for superfine powder making of the non flammable materials with Mohs hardness not large than and water content below 6% like Calcite, potassium feldspar, talc, barite, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement, phosphate rock, gypsum, glass, thermal insulation material in mineral, chemical ...