... foam ceramics, modification of coating and plastics, auto parts, war industry and aviation, steelmaking, etc.Black silicon carbide is classified ... and refractory industry, such as stemming, trough material, silicon carbide brick and other formed and amorphous products.Chemical ... lump90.02.01.5 Note: Silicon carbide sand and powder for deoxidization of steelmaking in specification of 50, 60, 70, 80 ...