... small 3.mainly used in smelting,steelmaking,casting. 4.0.5--2 mm,1--3mm ,3--8mm,3 ... small 3.mainly used in smelting,steelmaking,casting. 4.0.5--2 mm,1--3mm ,3--8mm, ... agent of steel and nonferrous metal. It widely plays a role in desulfurizating , degasification , dephosphorizating, and purification, ... effects. Product ParametersPlate Si FeSi75A74.0—80.0 FeSi75B74.0—80.0 FeSi75C72.0—80.0 FeSi6565.0—72.0