Black silicon carbide production process

Black silicon carbide is the use of quartz sand, petroleum coke, and silica as raw materials, by high temperature furnace smelting. Black silicon carbide has high hardness, stable chemical properties, high thermal conductivity, small thermal expansion coefficient, good wear resistance, and can be used in polishing and grinding materials, refractory materials, metallurgy and other industries.

Properties of black silicon carbide

Black silicon carbide is made of high-grade refractory material, heat resistance, small size, light weight and high strength, good energy saving effect. Low-grade silicon carbide (containing about 85% SiC) is an excellent deoxidizer, which can speed up steelmaking, facilitate control of chemical composition, and improve the quality of steel. In addition, silicon carbide is also widely used in the production of electric heating element silicon carbon rod

Black silicon carbide production process:

1, high temperature smelting: quartz sand, petroleum coke, silica and other raw materials are mixed according to the proportion, and added to the resistance furnace for high temperature smelting. The finished product after smelting is silicon carbide.

2, crushing: silicon carbide hardness is high, between white corundum and diamond, and the block is relatively large, ordinary crusher is difficult to crush it, we need to use jaw crusher for rough crushing first.

3, fine crushing: after coarse crushing of silicon carbide, you need to use a cone crusher for fine crushing, cone crusher can crush silicon carbide into a variety of specifications.

4, screening: the fine silicon carbide particle size screening, screening into different particle size of silicon carbide sand.

5, grinding: processing silicon carbide powder, need more than a grinding process, the silicon carbide sand into the Raymond mill grinding processing, grinding silicon carbide powder and then sieve, sieve into different particle size can be.