ferro silicon 1.composition:Si,Fe,Ca,S,P,C 2. ... dust,unweathered lump 4.all size ferro silicon 1.composition:Si,Fe,Ca,S,P,C2.application:steel- ... ,unweathered lump4.all size Ferro silicon is a kind of ferroalloy which is composed of ferrum and silicon. Ferro silicon used ... often used as deoxidizer in steelmaking.Application:Ferrosilicon is often used as deoxidizer in steel-making.Ferrosilicon ...