Ferro silicon 1.composiyion:Si,Fe,Al,Ca,S.P,C 2.Application:steel-making,iron casting 3.high quality ... ,low price 4.Ningxia Ferro silicon Ferro silicon is a kind ... .Application:Ferrosilicon is often used as deoxidizer in steel-making.Ferrosilicon also can be used as alloy elements ... /0086-15998488207 Ferro silicon72%&75% used for steel-making