... powder or micro powder, a new kind of machine for producing fine powder. It is mainly used ... , magnetite, iolite, pyrophillite, vermiculite, meerschaum, attapulgite, diatomite, barite, gypsum, alunite, graphite, fluorite, phosphate ore, potassium ore pumice, etc. ... between 325-2500 mesh.Grinder Mill Working PrincipleThe whole machine is collocated with jaw crusher, elevator, hopper, electromagnetic ...