... market 3)dry powder dry powder ball press machine Dry powder ball press machine is mainly used for anhydrous materials ... coal, iron ore concentrates, chromate ore concentrates, mgo power, copper power, chrome ore power, Lead Zinc Ore, steel slag, aluminum ash, Si ... -Mn mineral powder, bauxite refractory, nonferrous metal power, refractory matter, ceramic filter sand and metallurgical powder Cold ...