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