Calcined petroleum coke is a kind of petrochemical product, whose raw materials is green petroleum coke. It is widely used to produce graphite electrode, graphite blocks, brakes pads and other carbon products.It can also be used as carbon additive in some steel and aluminum plants, another, it is used in refractory, insulation, filler, etc.
The main use of CPC is in the production of anodes for the Aluminum Smelting process. 70 - 80% of CPC is for the Aluminum Industry. The reason for use in the Aluminum Industry is for conductivity. In the graphite electrode for steel making or anode paste for aluminum and magnesium making (melting electrode), in order to make petroleum coke (coke) meet the requirements, the coke is calcined. Calcination temperature, petroleum coke volatiles are considered factors.
1) Remove moisture and volatile content from raw materials
The volatile content of raw materials can be eliminated by calcination, thus increasing the fixed carbon content of raw materials. The water in raw materials is eliminated by calcination, which is conducive to crushing, screening and grinding operations, improve the adsorption performance of carbon raw materials to the binder, and improve the quality of products.
2) Improve the density and mechanical strength of raw materials
After being calcined, the carbon material shrinks in volume, increases in density and strength due to the elimination of volatiles, and obtains better thermal stability, thus reducing the secondary shrinkage of products during calcination.
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