Mineral grinding machine- HGM micro powder mill is a fine powder and superfine powder processing equipment, it is mainly suitable for medium and low hardness, Mohs hardness of ≤ 7 non-explosive brittle materials, such as calcite, chalk, limestone, dolomite, carbon black, kaolin, bentonite, talc, mica, magnesite, illite, pyrophyllite, vermiculite, sepiolite,...