1.4现代冶金过程—冶炼过程 Electric Arc Furnace Produces molten steeL Steel Refining Facility Iron Ore Coal Injection Natural Continuous Casting Direct Reduction Produces solid metallic iron from iron ore Coal Slabs Thin Slabs Basic Oxygen Furnace Coal Coke Oven -Products Limestone Blast Furnace Produces molten pig iron from iron ore Pig Iron Casting10 1.4 现代冶金过程—冶炼过程