Black silicon carbide is based on high-quality silicon-carbon and petroleum coke as raw material, the resistance furnace smelting temperatures above 2000 degrees in more than 46 hours. Between the hardness of corundum and diamond black silicon carbide, mechanical strength is higher than that of corundum, crisp and sharp. Widely used in abrasives, such as refractory material, deoxidant; made with black silicon carbide powder used in electronics, aerospace and other high-tech enterprises