High-quality Petroleum Coke for steel production is used to produce carbon electrodes in electric arc furnaces (EAF) and graphite products in steel manufacturing. In addition, it is used for smelting in order to make aluminum anodes and titanium dioxide which are used in paints or coatings. The calorific value of petroleum coke is high and it has an advantage over traditional coal in this respect. This is one major factor that impacts its price. In addition to its availability, the price depends on whether or not it can meet environmental standards.
It is the carbonized residue of heavy oil processing, including atmospheric and vacuum distillation and catalytic cracking. It contains 90-97% coal and a smaller amount of nitrogen, sulfur, hydrogen and metal elements. It can be produced by delayed or fluidized coking and in various forms, such as granules, columns and needles.
The most popular form of coke in power stations is called sponge coke. This type has the highest calorific and lowest volatile content. It is further heat treated in large rotary kilns to drive off additional volatiles in a process called calcining. This increases its carbon content fixed, reduces the resistance to corrosion and improves chemistry and physical properties. It is an extremely versatile material with a large variety of uses.
After calcination the resultant calcined oil coke is screened in order to remove impurities including tar, sand and other contaminants. It is washed first with deionized (purified) water to remove soluble residues, and then treated with 6 M Nitric Acid to reduce the amount of metallic elements. This is required to minimise slag problems and fly ash in power plant as well to comply to environmental regulations.
The coke is then subjected to densification by applying pressure, which lowers its porosity and enhances its energy density for industrial use. This improves the structural integrity. The final stage of drying is the last. This is crucial because moisture can negatively impact its performance.
A high-quality calcined petrol coke will be free of organic matter. This ensures its structural integrity, quality and safety for industrial use. It is also carefully screened to avoid any undesirable reactions during the devolatization process, which could cause unintended emissions and other unwanted changes in its properties.
In order to achieve the highest quality calcined petrol coke, you must go through a series processes. You will also need to undergo rigorous inspections and tests in order for it be suitable for industrial use. The product must be stored properly to prevent moisture and contamination during shipping. This is the best way to ensure that it retains its high performance in industrial uses while remaining competitive and satisfies industry criteria. Carbon content testing is the most crucial test. This test measures the amount or carbon in a given sample. To ensure the product is suitable for its intended use, it must also undergo a physical and chemistry analysis. If you have any questions about the quality of your calcined petroleum coke, please contact us today!
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