Ferro silicon 1.Composition:Si,Fe,Al,Ca,S,P,C ... casting 3.High quality,low price 4.Size:50-100 Ferro silicon Ferro silicon is a kind of ferroalloy which is composed ... of ferrum and silicon. Ferro silicon used coke, quartz (or silica) as raw material and ... CO.,LTD CONTACT:SUNNY TEL:86-0411-83611644/0086-15998488207 Ferro Silicon 75 for steel-making