... is applicable to non-flammable and non-explosive materials with hardness less than 6, such as calcite, chalk, limestone, dolomite ... gypsum, alum earth, graphite, fluorite, variscite, potash ore, floatstone.SCM Super-micro mill Operating principle:The whole system of the ... and muffler after being purified by the cyclone collector. SCM Super-micro mill Technic parameter : Model SCM6015 SCM8021 SCM10027 ...