... 3. Advanced technique 4. Full antomatic, CE 2011 metal hot selling powder ball press machine Introduction:coal powder ball ... smelting furnace, such as coal, coal ash, coal mud, coke powder, coking coal, iron ore concentrates, chromate ore concentrates, ... aluminum ash, Si-Mn mineral powder, bauxite refractory, nonferrous metal power, refractory matter, ceramic filter sand and metallurgical powder Cold ...