... sectors such as quartz, feldspar, calcite, talcum, barite, fluorite, rare earth, marble, keramics, bauxite, manganese ore, iron ... coal gangue, porcelain clay, kyanite, fluorite, bentonite, stone flow lines rock, pyrophyllite, shale, purple sand stone, dolerite, stack of rock, basalt ... very easily.6. The grinding device of overlapping multi-level sealing design ensures a good sealing capability ...