Oil coke, a form of carbon, is used to power many modern industrial processes. Its high carbon purity and good conductivity makes it an important material in steelmaking, foundry, and battery manufacturing industries. Graphite Petroleum Coke, a critical raw material for the production of carbon-based high technology products is also a source. Learn more about this incredible material and how it can improve the efficiency of your industrial operations.
Graphitized Petroleum Coke is the result of a treatment known as "graphitization," in which the internal structure of the coke is changed to create graphite crystals. The coke is heated to high temperatures in order to align its carbon atoms and create a more organized structure. The product is a more stable material with high conductivity and inertness.
Graphite Petroleum Coke is primarily made from fluid and delayed coking residues of oil refineries. The vacuum residues that are of lower grade produce fuel coke with a low value, while those residues which are higher quality produce needle and anode. This needle coke has an exceptionally high grade, as it is free from impurities including sulfur and nitrogen.
This coke is then used to make anode grade graphite electrodes, which are used in the aluminum industry. Also, it is used for the manufacture of various graphite materials such as refractory and casting moulds. The most useful and valuable application of this type of coke, however, is as a carbon raiser during the smelting of alumina in aluminium plants.
It is possible to make high-quality carbon graphite from coke by undergoing a "graphitization", a thermal treatment. The resulting graphite is highly valued for its high-purity, good conductivity, and thermal stability.
It is possible to use expandable graphite in gaskets, flame retardant coatings, and other applications. The specialized property of expandable graphite is its ability to expand significantly when heated, creating a lightweight material that offers exceptional insulation and fire resistance. The graphite in this form is made by combining a binder and shaped petroleum coke, then undergoing a graphitization procedure.
Currently, the only way to reliably produce synthetic graphite is from specialty petroleum coke. The problem is that this petroleum coke can be expensive and requires a lot of energy, so it's difficult to make on a large-scale. Additionally, it is often difficult to diversify supplies of specialty petroleum coke because many producers rely on older, less efficient facilities that require a significant amount of maintenance.
This new way of graphitizing coke will likely revolutionize industry, as it allows producers to utilize existing equipment in order to convert low-quality feedstocks into graphite with high quality. This is possible because the new process can be accomplished at the same temperature as traditional coking, allowing the use of lower-grade coke that would otherwise be wasted. In addition, the new method eliminates the need to heat the coke above a critical point, which can cause it to oxidize and degrade.
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