... in the iron industry. Cast iron is an important modern industrial metal material, it is cheaper than steel, easily melt refining, ... reducing agent.Pyrometallurgical process (4) 75 # ferrosilicon in Pidgeon magnesium metal magnesium often used, the CaO.MgO magnesium displace, each ton ... necessary to consume about 1.2 tons of ferrosilicon, magnesium metal production plays a big role.(5) use in other ...