Graphitized Petroleum Coke is to put the oil coke in the graphitization furnace and make the oil coke free after a high temperature of about 3000 degrees.
The fixed disordered layer structure carbon crystal is transformed into hexagonal layer structure crystal carbon, that is, petroleum coke is transformed into graphite. This process is called
For graphitization, the petroleum coke treated by graphitization process is called Graphitized Petroleum Coke, commonly known as "graphitized coke".
There are many kinds of raw materials for carburizers, and the production processes are also different, including woody carbon, coal carbon, coke, graphite, etc., among which there are many small types under various classifications. High-quality recarburizers generally refer to graphitized recarburizers. Under high-temperature conditions, the arrangement of carbon atoms is in the microscopic form of graphite, so it is called graphitization.
Graphitization can reduce the content of impurities in the recarburizer, increase the carbon content of the recarburizer, and reduce the sulfur content. The carburizer is used in casting, which can greatly increase the amount of scrap steel and reduce or eliminate the amount of pig iron.
In the feeding method of electric furnace smelting, the recarburizer should be put in together with scrap steel and other furnace materials, and small doses can be added to the surface of molten iron. However, it is necessary to avoid feeding a large amount of materials into the molten iron to prevent excessive oxidation, resulting in insignificant carburization effects and insufficient carbon content in castings. The amount of fuel added is determined according to the ratio and carbon content of other raw materials.
For different types of cast iron, choose different types of recarburizers according to your needs. The characteristics of the carburizer itself select pure carbon-containing graphitized substances to reduce excessive impurities in pig iron, and the appropriate choice of carburizer can reduce the production cost of castings.
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