Pyrophyllite ultrafine grinding equipment-HGM ultrafine grinding mill HGM ultrafine grinding mill is mainly suitable for processing ultrafine powder of non-flammable and explosive brittle materials with medium and low hardness, Mohs hardness ≤6, such as calcite, chalk, limestone, dolomite, carbon black, kaolin, Bentonite, talc, mica, magnesite, illite, pyrophyllite, vermiculite, sepiolite ...