... F3000 3,manufacturer4, refractory,abrasives,grinding material,polishing compound 1.DescriptionBlack silicon carbide is ... and petroleum coke as its main raw materials. Its hardness is between fused ... for working on cast iron, non-ferrous metal, rock, leather, rubber, etc. It is also broadly used as refractory material ... request1. Black silicon carbide is the main raw materials of quartz sand , stone sand ...