Calcite Micro Powder Grinding Mill For Sale. Calcite ball grinding mill wet series of rollerring micro powder grinder mill is widely used in making fine powder or micro powder, and over 200 raw materials that under the mohs hardness less than 6 grade such as lizenithne, calcium carbonate, calcite, dolomite, kaolin, bentonite, talc, illite, pyrophillite, barite, meerschaum, fluorite ...