... of non-flammable mine, chemical industry,and building material with moth's hardness less than 7 level an the ... feldspar, pencil stone, marble, limestone, dolomite, fluorite, lime, active clay, active carbon, bentonite, kaolin, cement, phosphorite rock, gypsum, glass and ... and packing is an independent production system.2. Compared with other milling plants, its passing ratio achieves 99%, this ...