Black silicon carbide is made of quartz sand, 97 silicon carbide wholesale manufacturers, petroleum coke and silica as the main raw materials, and is smelted at high temperature in a resistance furnace. Its hardness is between corundum and diamond, its mechanical strength is higher than corundum, and it is brittle and sharp. Green silicon carbide is made of petroleum coke and silica as the main raw materials, adding salt as an additive, and smelting at high temperature in a resistance furnace. Its hardness is between corundum and diamond, and its mechanical strength is higher than corundum.
Silicon carbide is used as an abrasive and can be used as grinding tools, such as grinding wheels, oil stones, grinding heads, sand tiles, etc. Therefore, in the process of using silicon carbide, it must be noted that when silicon carbide is used for abrasives, the particle size is different from that of ordinary casting and steel-making silicon carbide. 97 silicon carbide suppliers, its particle size range value is very Small, Fujian 97 silicon carbide, generally 60-80 mesh, 80-100 mesh, 100-120 mesh, 180-200 mesh, etc. The particle size is very fine.
Silicon carbide is a solid material that can resist the action of high temperatures and is widely used in the metallurgical industry. According to its chemical properties and components, silicon carbide can usually be divided into: acid silicon carbide (quartz, silica brick); semi-acid silicon carbide (semi-silicon brick); neutral silicon carbide (chrome brick, clay brick, high alumina brick) ); alkaline silicon carbide (magnesium brick, chrome-magnesium brick, magnesia-alumina brick, dolomite brick, magnesia, dolomite and magnesia refractory mud), etc.
Alkaline silicon carbide is widely used in smelting equipment due to its excellent properties such as high refractoriness, good thermal stability, and good slag resistance. In the process of converter and electric furnace steelmaking, molten steel will mechanically scour the furnace lining silicon carbide, and at the same time, the constituent elements of silicon carbide will dissolve into the molten steel and chemically react with the molten steel.
The mechanical scouring of molten steel on the furnace lining and the chemical reaction between the two: on the one hand, it leads to the damage and erosion of the silicon carbide of the furnace lining; on the other hand, it will affect the quality of molten steel and steel.