Silicon carbide refractory materials have excellent high temperature properties such as high strength, high thermal conductivity, impact resistance, oxidation resistance, wear resistance, and corrosion resistance. They are widely used in metallurgy, energy, chemical industry and other industries.
Silicon carbide is mainly used as a steelmaking purifier and deoxidizer in the metallurgical field. During the steelmaking process, silicon carbide decomposes and reacts with free oxygen and metal oxides in the molten steel to generate carbon monoxide and silicon-containing slag, thereby purifying the molten steel and promoting the perfection of casting. Compared with traditional ferrosilicon deoxidizer, using silicon carbide as a deoxidizer can more effectively reduce the content of certain useful elements in the slag, making the steelmaking time shorter and the composition easier to control. Therefore, the application of silicon carbide in the steel industry not only improves the quality of steel, but also has significant economic benefits.
Silicon carbide plays a key role in the steelmaking and foundry industries. As a steelmaking deoxidizer, it can ensure the stability of molten steel quality and help refine grains and remove harmful impurities. After using silicon carbide, the casting temperature of molten steel rises, resulting in high-quality ingots with relatively low unit cost. What is more worth mentioning is that silicon carbide can completely replace ferrosilicon and carburizers, further reducing the amount of FeALSi and effectively reducing steelmaking costs. In addition, the decomposition and oxidation of silicon carbide at high temperatures are exothermic reactions, which help to form positive pressure in the furnace, thereby reducing the sulfur content.
