... quality certificate 2)India market 3)dry powder dry powder ball press machine Dry powder ball press machine is mainly used ... before the smelting furnace, such as coal, coal ash, coal mud, coke powder, coking coal, iron ore concentrates, chromate ore ... ore power, Lead Zinc Ore, steel slag, aluminum ash, Si-Mn mineral powder, bauxite refractory, nonferrous metal power, refractory matter, ceramic ...