Black silicon carbide is a non-metallic mineral product produced at a high temperature of more than 1800 degrees Celsius with quartz sand (SIO2) and anthracite or petroleum coke (C) as basic raw materials. It has the characteristics of high hardness, small expansion coefficient, brittleness, good thermal conductivity, etc. It is made through crushing, impurity removal, pickling, washing, drying and screening. It has high cleanliness, high purity, high content, good particle size and shape and excellent sharpness. It is widely used in abrasives, grinding of electronic products, refractory materials, special ceramics, foam ceramics, coating plastic addition and modification, auto parts, military aviation, deoxidizer for steelmaking, etc.