< >

Low Sulfur Graphitized Petroleum Coke

Graphitized petroleum coke (GPC) offers several advantages as a carburizer in various applications. Here are some of its key advantages:

High Carbon Content: GPC has a high carbon content, typically above 98%. This high carbon content makes it an effective carbon source for carburizing processes. It provides a concentrated and consistent source of carbon, ensuring efficient carbonization and desired carbon levels in the treated material.

Low Impurity Content: GPC is processed to have low impurity levels, such as sulfur, volatile matter, and metals. Low impurity content is crucial in carburizing applications as impurities can negatively affect the process and the quality of the treated material. GPC with low impurities helps minimize the potential for undesired reactions and ensures a clean carburization process.

Consistent and Controlled Carbonization: The high-quality graphitized structure of GPC allows for consistent and controlled carbonization. The carbon atoms in GPC are arranged in a highly ordered and crystalline form, which promotes predictable and controllable carbon diffusion and distribution during the carburization process. This contributes to uniform and reliable carbon incorporation in the treated material.

High Thermal Stability: GPC exhibits high thermal stability, making it suitable for high-temperature carburizing processes. It can withstand the elevated temperatures typically required for carburization without significant degradation or loss of carbon content. The thermal stability of GPC ensures its performance and effectiveness throughout the carburization process.

Good Electrical Conductivity: GPC possesses excellent electrical conductivity due to its graphitic structure. This electrical conductivity is advantageous in certain carburizing processes that involve electric current or resistive heating. GPC's conductivity allows for efficient heat generation and distribution, facilitating the carburization process.

Consistent Particle Size Distribution: GPC can be produced with a controlled particle size distribution, which is advantageous in applications where uniform carbon dispersion is essential. A consistent particle size distribution of GPC ensures even carbon distribution during carburization, leading to uniform carbon enrichment and desired material properties.

Cost-effectiveness: GPC can be a cost-effective carburizing agent compared to other carbon sources. Its availability, coupled with its desirable properties, makes it a competitive choice for achieving the desired carbon content in various carburizing processes.

These advantages make Graphitized petroleum coke a popular choice as a carburizer in industries such as steelmaking, iron casting, and foundry applications where precise carbon control and reliable carburization are required.

Contact Now E-Mail Telephone WhatsApp

Product Details

Production process of graphitized petroleum coke

Graphitized petroleum coke (GPC) is produced through a multi-step process that involves the conversion of raw petroleum coke into a high-quality carbon material suitable for various industrial applications. The production process typically involves the following steps:

Raw Material Preparation: The first step is to obtain raw petroleum coke, which is a byproduct of the refining process in the petroleum industry. The raw coke is generally derived from heavy or extra-heavy crude oil through a delayed coking process or fluid coking process. The coke is usually produced as a solid material with a high carbon content.

Calcination: The raw petroleum coke is then subjected to a thermal treatment known as calcination. In this step, the coke is heated to high temperatures (typically above 1200°C or 2200°F) in a controlled environment, such as a rotary kiln or vertical shaft kiln. Calcination removes volatile matter and other impurities from the coke, resulting in a material with higher carbon content and improved electrical conductivity.

Crushing and Sizing: The calcined coke is then crushed and ground into various particle sizes, depending on the specific requirements of the end application. This step helps to ensure uniformity and optimize the properties of the final product.

Blending and Mixing: In some cases, different batches of calcined coke may be blended together to achieve the desired carbon content and other specifications. This blending step ensures consistency in the final product quality.

Graphitization: The crushed and sized coke is subjected to a high-temperature treatment called graphitization. The coke is heated to temperatures above 2500°C (4500°F) in an electric furnace or an Acheson furnace under controlled conditions. During graphitization, the carbon atoms in the coke rearrange into a highly ordered crystalline structure, transforming the coke into graphitic carbon. This process increases the carbon content and improves the material's electrical conductivity, thermal stability, and mechanical strength.

Final Processing: After graphitization, the graphitized petroleum coke is cooled and further processed to remove any remaining impurities or contaminants. This may involve processes such as screening, washing, and magnetic separation to ensure the final product meets the desired quality specifications.

Packaging and Distribution: The graphitized petroleum coke is then packaged in suitable containers, such as bags or bulk containers, and prepared for distribution to customers. It is commonly transported by sea or land to various industries, including steel manufacturing, foundries, and carbon products manufacturing.

It's important to note that the specific production process of graphitized petroleum coke may vary depending on the manufacturer and the intended application of the product. The steps described above provide a general overview of the typical process used in the industry.