... or new production line building in cement factories. It is can be used for grinding middle hard ores such as iron ore, aluminum ore ... , gritstone, gypsum, blast furnace slag, coal gangue, phosphorus ore, and lump coal. Also, it ... such as stone, granite, trap rock, coke, coal, manganese ore, iron ore, emery, fused aluminum, oxide, fused calcium carbide, limestone, ...