The main raw materials of silicon carbide are quartz sand, petroleum coke, and wood chips, which are smelted at high temperatures through an electric furnace. According to the content of silicon carbide, silicon carbide can be divided into primary silicon carbide, secondary silicon carbide, and tertiary silicon carbide. It is widely used in steelmaking and casting and has many advantages such as stable chemical properties, high thermal conductivity, and good wear resistance. Common silicon carbide has a black appearance and can be processed into powder, granules lump with sizes ranging from 0mm~1mm, 1mm~10mm, 10mm~50mm.
Silicon Carbide is a kind of non-metallic carbide combined with silicon and carbon. Through raw materials such as quartz sand, petroleum coke, wood chips, etc, it is smelted by an electric furnace at high temperature, and its hardness is second only to diamond, with a hardness of 9.5. Common silicon carbide is black or black-blue in appearance, which has the advantages of stable chemical properties, good wear resistance, and high thermal conductivity. Since silicon carbide is a semiconductor, it has an anti-oxidation effect at high temperatures. Industrial silicon carbide generally has a silicon carbide element content of 70 to 90% and contains a small amount of free carbon and other impurities.
| Classification | Chemical Component | |||
| Sic | F.C | Fe2O3 | SiO2 | |
| First grade silicon carbide | ≥98.60% | ≤0.20% | 0.40% | scruple |
| Secondary silicon carbide | ≥95.50% | ≤0.50% | 0.70% | scruple |
| ≥90.00% | ≤1% | 1.2% | scruple | |
| Tertiary silicon carbide | 75.00%-80.00% | 2.50%-3.50% | 3% | 17.00% |
With the advantages of high-temperature resistance, wear resistance, heat shock resistance, electrical conductivity, etc., silicon carbide has been widely used in various fields. In steelmaking, the deoxidizing performance of silicon carbide has been well applied, which can replace expensive deoxidizers. Significantly reduce the cost of deoxidation. The use of silicon carbide in casting can improve the distribution of graphite, promote the formation of eutectic pellets, improve the inoculation effect, increase the furnace temperature, make the chemical reaction of raw materials more thorough. In electrical, carbonization Silicon can be used in arrester valve body silicon-carbon electric heating elements, far-infrared generators. In the electronics industry, silicon carbide furnaces or industrial furnaces are used to produce silicon carbide with higher purity by special methods. These silicon carbides can be used Used in the production of light-emitting diodes and solar energy.
The particle size of silicon carbide used in steelmaking deoxidation is 0-10mm and 1-10mm. With the development of steelmaking technology, silicon carbide has gradually become an indispensable charge for steel plants. The use of silicon carbide in steelmaking can effectively increase the deoxidation rate and accelerate the formation of slag. It not only has the effect of deoxidation, but also increases the carbon content in the molten steel, which greatly reduces the cost of steelmaking, makes the quality of molten steel more stable, and effectively improves the molten steel. The purity of molten steel increases the casting temperature of molten steel, the quality of the cast slab is good, and the unit cost is low.
The use of silicon carbide in casting can effectively improve the quality of castings. Silicon carbide can effectively improve the fluidity of molten iron, stabilize the composition of molten iron, prevent segregation, increase the amount of ferrite, and improve the distribution of graphite from AB, increasing total The number of crystal pellets reduces the tendency of whitening in castings and increases the tensile strength by 20%-30%.
According to customer requirements, we usually use tons of packages to package silicon carbide. If you have any needs for silicon carbide packaging, you can contact us for customization.
