China’s silicon carbide production process

China’s silicon carbide production process
China’s silicon carbide smelting production process, technical equipment and energy consumption per ton have reached the world’s leading level. The quality level of black and green silicon carbide blocks is also world-class. The gap between China’s silicon carbide and the world’s advanced level is mainly concentrated in four aspects: First, large-scale machinery and equipment are rarely used in the production process, and many processes rely on manpower to complete, and the per capita silicon carbide output is low; second, in the deep-processing products of silicon carbide, the quality management of particle size sand and micro-powder products is not fine enough, and the product quality is not stable enough; third, the performance indicators of some cutting-edge products are somewhat different from those of similar products in developed countries; fourth, carbon monoxide is directly emitted during the smelting process. Major foreign companies have basically achieved closed smelting, while China’s silicon carbide smelting is almost all open smelting, and carbon monoxide is directly discharged. In 2012, Chinese companies developed closed smelting technology and achieved full recovery of carbon monoxide, but there is still a long way to go before it is popularized throughout the industry.