... 750 rpm , 1500 rpmApplicationVarious nonmetal powder such as heavy calcium carbonate, light calcium carbonate, talcum powder,kaolin, graphite, silica,bruite,barite ... , mica powder, communalizebentonite,diatonite, clay, etc..Various metal powder such as aluminum powder, zinc powder, molybdenum powder, tungsten powder, magnesium powder, copper powder ...