Black silicon carbide for abrasives

Silicon Carbide is a non-metal mineral made of fusion of Quartz Sand and Anthracite/Petroleum Coke in electric resistance furnace under 1800 celcius degree. Because of different raw materials used, there are Black Silicon Carbide and Green Silicon Carbide. Black Silicon Carbide has high hardness, low expansion rate, good heat conductivity, widely used in abrasive tools, grinding and polishing of electronic parts, refractory materials, high end ceramics, foam ceramic, auto