ferro silicon 1.composition:Si,Fe,Ca,S,P,C 2.application:steel-making,iron casting 3.no dust,unweathered lump ... .all size ferro silicon 1.composition:Si,Fe,Ca,S,P,C2.application:steel-making,iron casting3.no dust,unweathered lump4 ... :SI>75%AL<2.0%C<0.2%P<0.04%S<0.02%SI>72%AL<2.0%C<0.2%P<0.04%S ...