1、 Product Overview
Calcined petroleum coke 8-25 refers to calcined petroleum coke products with particle sizes mainly distributed between 8-25mm. It uses residual oil produced from petroleum refining as raw material, and after delayed coking to form raw petroleum coke, it is calcined in a high temperature environment of ℃ - ℃. This process effectively removes a large amount of impurities such as water and volatiles from raw petroleum coke, significantly improving the density, strength, and chemical stability of the product, making it an important raw material with unique advantages in industrial production.
2、 Performance advantages
Accurate and controllable high purity: Through advanced calcination technology, the sulfur content of the product can be customized within the range of 0.5% -3% (corresponding to different specifications of low sulfur, medium sulfur, and high sulfur), and the ash content is strictly controlled within ≤ 0.5%. This high-purity characteristic can meet the demanding requirements of industries such as electrolytic aluminum and steelmaking for raw material purity, reduce the interference of impurities on the production process, and ensure the stability of the final product quality.
Excellent physical properties: High temperature calcination promotes the reconstruction of the internal structure of petroleum coke, forming a tight and stable crystal structure. The product density reaches 1.8-2.0g/cm ³, with high compressive strength and good wear resistance. The larger particle size of 8-25mm allows the product to have larger gaps when stacked, with good gas and liquid circulation. During transportation, storage, and use, it can effectively resist external impact, reduce particle breakage, and lower loss rates.
Excellent chemical stability: The volatile content of the product is usually less than 0.5%. Under complex working conditions such as high temperature and strong acidity and alkalinity, the chemical properties are stable and not easily reacted with the surrounding medium. In high-temperature processes such as electrolysis and smelting, it can work stably for a long time, reduce material loss caused by chemical changes, and improve production efficiency and economic benefits.
Good electrical and thermal conductivity: The unique crystal structure endows it with excellent electrical and thermal conductivity, which can effectively improve energy transfer efficiency, reduce energy consumption, and meet the high energy demand in high-temperature production processes in industrial scenarios that require efficient transmission of electrical and thermal energy.
3、 Production process
Raw material selection and pretreatment: Strictly screen high-quality raw petroleum coke as the production raw material, first conduct initial particle size screening to remove oversized or undersized particles that do not meet the requirements. Then, using professional crushing equipment, the raw materials are processed to a suitable particle size range to prepare for subsequent calcination. At the same time, comprehensive testing of key indicators such as sulfur content and ash content of raw materials is carried out to ensure that the quality of raw materials meets production standards.
High temperature calcination treatment: The pre treated raw petroleum coke is sent into a vertical calcination furnace or rotary kiln. Under high temperature conditions of ℃ - ℃, the moisture and volatile components in the raw petroleum coke gradually precipitate and burn, and the internal structure undergoes recrystallization and densification processes. By precisely controlling the temperature curve, calcination time, and gas atmosphere inside the furnace, the consistency and stability of product quality are ensured.
Cooling and precise screening: The calcined petroleum coke is quickly cooled to room temperature by an efficient cooling system to prevent oxidation. Subsequently, professional screening equipment such as high-precision vibrating screens and drum screens are used to accurately screen according to the particle size requirements of 8-25mm, separating products that do not meet the particle size specifications to ensure uniform and consistent particle size of the finished product.
Strict quality inspection and packaging: Conduct comprehensive quality inspection on finished products, covering multiple indicators such as particle size analysis, sulfur content determination, ash content testing, density testing, etc. Only products that meet all indicators will be packaged in moisture-proof woven bags, ton bags, or containers to ensure that the products are not contaminated or damaged during transportation and storage.
Calcined petroleum coke is a type of petroleum coke that is processed at high temperatures. It has many uses, such as:
1. Steel production: Calcined petroleum coke is an important raw material in the steelmaking process. It can be used as a reducing agent together with iron ore to reduce the amount of oxides and reduce iron ore to metallic iron.
2. Bauxite production: Calcined petroleum coke is also an important raw material for refining aluminum. In the process of bauxite refining, calcined coke can serve as a reducing agent to reduce the oxides in bauxite to metallic aluminum.
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3. Electrolytic copper production: Calcined petroleum coke can also be used for the production of electrolytic copper. In this process, the calcined petroleum coke acts as a reducing agent and combines with the copper ions in the electrolytic cell, reducing the oxidation state of the copper ions and reducing them to metallic copper.
4. Energy production: Calcined petroleum coke can also be used to produce electricity. After calcination, a large amount of heat energy is released during the combustion of coke, which can be used to generate steam and then generate electricity using a steam generator.
In short, calcined petroleum coke has a wide range of applications in industrial production and has become one of the indispensable raw materials
Physical Properties