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Differences Between Graphite Petroleum Coke (GPC) and Calcined Petroleum Coke (CPC)

In the field of carbon materials, both Graphite Petroleum Coke (GPC) and Calcined Petroleum Coke (CPC) are products derived from petroleum coke through different processing techniques. The two differ significantly in their processing, physical and chemical properties, and application areas.

Graphite-petroleum-Coke

Graphite Petroleum Coke (GPC)

Processing of Graphite Petroleum Coke (GPC) and Calcined Petroleum Coke (CPC)

Calcined Petroleum Coke (CPC): CPC is produced by heating raw petroleum coke in a rotary kiln or other suitable heating equipment at temperatures between 1200°C and 1400°C. This process, known as calcination, aims to remove volatile substances such as hydrocarbons, sulfur, and moisture, resulting in a more purified form of carbon.
Graphite Petroleum Coke (GPC): GPC is the result of further processing CPC. This involves heating CPC at extremely high temperatures, typically above 2500°C, under a non-oxidizing atmosphere. This causes the carbon atoms to rearrange into an ordered graphite crystal structure, a process known as graphitization.

Physical and Chemical Properties of Graphite Petroleum Coke (GPC) and Calcined Petroleum Coke (CPC)

CPC: It has lower electrical and thermal conductivity and a relatively lower density. Although CPC contains a certain amount of crystalline carbon, it does not form the well-ordered graphite structure found in GPC.
GPC: Due to its more organized graphite structure, GPC exhibits higher electrical and thermal conductivity. Additionally, it has a higher density and a lower coefficient of thermal expansion. In terms of mechanical properties, GPC is generally superior to CPC.

Application Areas of Graphite Petroleum Coke (GPC) and Calcined Petroleum Coke (CPC)

CPC: Widely used in the production of electrodes for the steel and aluminum industries; it is also used in the production of titanium dioxide and as a carbon raiser in metallurgical processes.
GPC: Its superior physical and chemical properties make it suitable for more advanced applications, such as the preparation of advanced composite materials, as a lubricant, in the nuclear industry, and in the production of high-performance electrodes for electric arc furnaces.

LSFerroalloy is a leading company specializing in the research and development and production of high-quality GPC. With advanced manufacturing processes and technical expertise, the company is capable of providing GPC products that meet stringent requirements. LSFerroalloy not only focuses on quality control but also on technological innovation to adapt to the ever-changing market demands. By continuously optimizing the graphitization process, improving energy efficiency, and reducing environmental impact, LSFerroalloy is striving to become one of the most trusted GPC suppliers globally.

In summary, although both GPC and CPC originate from the same raw material—petroleum coke—their distinct processing methods, especially the more sophisticated graphitization process for GPC, result in final products with superior performance characteristics. These are suitable for a wider range of and more demanding applications. Companies like LSFerroalloy are at the forefront of driving progress and development in this field.

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