ferro silicon 1.composition:Si,Fe,Ca,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,P,C2.application:steel-making,iron casting3.no dust,unweathered lump4.all size 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 using electric ...