What is petroleum coke? Petroleum coke is a product obtained by separating crude oil from heavy oil by distillation and then thermally cracking the heavy oil. From the appearance, coke is a black block (or granule) of irregular shape and size. ), with metallic luster, coke particles have a porous structure, the main elemental composition is carbon, and contains less impurities than coal.
Petroleum coke can be used in the industries of graphite, smelting and chemical industry depending on its quality. Low-sulfur, high-quality cooked coke, such as needle coke, is mainly used to manufacture ultra-high-power graphite electrodes and some special carbon products. In the steel-making industry, needle coke is an important material for developing new technologies for electric steelmaking. Medium sulfur, ordinary cooked coke, used in large quantities for aluminum smelting. High sulfur and ordinary coke are used in chemical production, such as the manufacture of calcium carbide, silicon carbide, etc., as well as fuel for metal casting.
Most of the petroleum coke produced in China is low-sulfur coke, which is mainly used for aluminum smelting and graphite production. It is mainly used for the production of carbon products, such as graphite electrodes and anode arcs, for steel making, non-ferrous metals, and aluminum smelting; for the production of carbonized silicon products, such as various grinding wheels, sand sheets, sandpaper, etc.; Production of synthetic fibers, acetylene and other products can also be used as fuel, but when used as fuel, it needs to be crushed by a graded impact mill for superfine pulverization. It can be burned after making coke powder through JZC-1250 equipment, using coke powder as fuel. Mainly some glass factories, coal water slurry plants, etc.
Another use of petroleum coke is to produce higher quality carbon materials after calcination. For example, 3.0% of high sulfur calcined coke after calcination can be used as prebaked anode for aluminum, and low sulfur calcined petroleum coke can be used as recarburizer. It is a low-demand use such as gray cast iron. After deep processing of petroleum coke, graphitized petroleum coke can be obtained. It is a high-quality carbon material and can be used as a recarburizer.