... density is small 3.mainly used in smelting,steelmaking,casting. 4.0.5--2 mm,1--3mm ,3 ... density is small 3.mainly used in smelting,steelmaking,casting. 4.0.5--2 mm,1--3mm ,3 ... and it is mainly used in smelting,steelmaking and casting. Raw Material The ferro silicon granule takes the coke ... 45%, etc. Property Appearance: silver gray, massive, not powder Melting Point :1080-1250 °C Weight proportion :4.7- ...