... ,S,P,C 2.application:steel-making,iron casting 3.no dust,unweathered lump 4.all size ferro silicon 1.composition:Si,Fe,Ca,S ... kind of ferroalloy which is composed of ferrum and silicon. Ferro silicon used coke, quartz (or silica) as raw material and ... by . Because of silicon and oxygen are easily compound into SIO2,so the ferrosilicon often used as deoxidizer in steelmaking.Application ...