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Raw materials for producing high-purity graphite, including aggregates, binders, and impregnating materials. Aggregates are usually made from needle shaped petroleum coke and asphalt coke; This is because needle shaped petroleum coke has a low ash content (usually less than 1%), is prone to graphitization at high temperatures, has good electrical and thermal conductivity, and a small coefficient of linear expansion.


For asphalt coke, even graphite obtained at the same graphitization temperature has higher electrical resistivity and mechanical strength. Therefore, in the production of general graphitized products, in addition to petroleum coke, there is also a certain proportion of asphalt coke to improve the mechanical strength of the product. Coal tar is commonly used as a binder, which is a product of the distillation process of coal tar. It is a black solid at room temperature and has no fixed melting point.


According to the different equipment conditions and process requirements of various graphite product manufacturers, the softening point of coal tar pitch is 50 ℃ to 250 ℃. Usually, high-purity or high-temperature coal tar pitch is chosen to produce high-purity graphite products. The impregnating agent is basically the same as the adhesive. Need to increase the product's bulk density, impermeability, lubricity, strength, and other special properties. Require the addition of impregnating materials after baking, graphitization, or mechanical processing.


Choose high-purity or high-temperature coal tar pitch to produce high-purity graphite products. The impregnating agent is basically the same as the adhesive. Need to increase the product's bulk density, impermeability, lubricity, strength, and other special properties. Require the addition of impregnating materials after baking, graphitization, or mechanical processing. Choose high-purity or high-temperature coal tar pitch to produce high-purity graphite products. The impregnating agent is basically the same as the adhesive. Need to increase the product's bulk density, impermeability, lubricity, strength, and other special properties. Require the addition of impregnating materials after baking, graphitization, or mechanical processing.