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Green silicon carbide is made from petroleum coke and high-quality silica as the main raw materials, with salt as an additive, and is smelted at high temperature in a resistance furnace. The smelted crystal has high purity and high hardness. Its hardness is between corundum and diamond, and its mechanical strength is Higher than corundum.
Compared with black silicon carbide, green silicon carbide has advantages in high temperature, electrical insulation and chemical stability.
Graphitized petroleum coke is a high-purity carbon material produced at a temperature of 2500-3500°C. It has the characteristics of high fixed carbon content, low sulfur, low ash and low porosity. It is black in color, porous, in the form of accumulated granules, and cannot be melted.
Calcined petroleum coke (CPC) is the byproduct obtained from the coker unit in a crude oil refinery. lt is primarilyused to make anodes for the aluminum, steel, and titanium smelting industry.
Petroleum coke manufactured by delayed coking of residues obtained from crude oil distillation units of oil refineries is called green or raw petroleum coke. The said green or raw petroleum coke calcined at a temperature 12000 centigrade to 13000 centigrade is known as calcined petroleum coke.
Black silicon carbide is a non-metallic ceramic material composed of carbon and silicon elements. Black silicon carbide has very high hardness, belonging to Mohs hardness level 9.5, second only to diamond and cubic boron nitride.
Black silicon carbide is a non-metallic ceramic material composed of carbon and silicon elements. Black silicon carbide has very high hardness, belonging to Mohs hardness level 9.5, second only to diamond and cubic boron nitride.
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