Silicon carbide is a widely used abrasive because of its durability and competitive cost. In manufacturing, it is used for its hardness in abrasive machining processes such as honing, grinding, water-jet cutting and sandblasting. Particles of silicon carbide are laminated to paper to create sandpapers and the grip tape on skateboards.
Metallurgical grade silicon carbide is used in iron foundries and in steel melting industry.
• As an inoculant in iron foundries.
• As an energy booster in steel converters (LD/BOF) due to the exothermic reaction in the process.
• As a Si- and C-alloying additive in induction and cupola furnaces for cast iron production.
• As a deoxidizing agent in ladle furnaces and electric arc furnaces during slag treatment.
High purity silicon carbide grain (fused quartz and coke) is used in bonded refractory products requiring exceptionally high thermal conductivity, chemical stability, hot strength, and resistance to thermal shock or corrosion from gases, acids, slags and melted metals. Typical examples are
• Kiln furniture
• Aluminum reduction cells
• Bricks for blast furnaces and zinc furnaces
• Heating elements