... Series Ultrafine Mill is widely used in making fine powder or micro powder, a new kind of machine for producing ultrafine ... powder. It is mainly used for grinding the material ... , mica, magnetite, iolite, pyrophillite, vermiculite, meerschaum, attapulgite, diatomite, barite, gypsum, alunite, graphite, fluorite, phosphate ore, potassium ore pumice, etc. The ...