1.Type:FeSi75,FeSi65,FeSi45,etc 2.compositions:Fe,Al,Si,Ca,Mn,Cr ... Size: 10-100mm 5.1T/bag Chemistry Ferrosilicon is produced by reduction of silica or sand with coke ... 45%, 75%, and 90% silicon. The remainder is iron, with about 2% consisting of other elements like aluminium and calcium. ... good performance. Usage The Silicon metal has wide application. For example, producing organic-Si(Si-oil, Si-rubber) ...