... series3.More than 90% exported1.DescriptionBlack silicon carbide is produced at high temperature in an electric resistance type ... -ferrous metal, rock, leather, rubber, etc. It is also broadly used as refractory material and metallurgical additive.2.Chemical compositionBlack ... -ferrous metal, rock, leather, rubber, etc. It is also broadly used as refractory material and metallurgical additive#14#16#20 ...