Graphitized petroleum coke (GPC)

Graphitized Petroleum Coke: A Superior Carbon Material from Khorshid Alyazh

Graphitized petroleum coke (GPC) is a versatile carbon material derived from petroleum coke, a byproduct of oil refining. Through a process of heat treatment and graphitization, petroleum coke is transformed into GPC, which exhibits enhanced properties such as high electrical and thermal conductivity, low thermal expansion, and excellent chemical resistance.

Production of Graphitized Petroleum Coke at Khorshid Alyazh

Khorshid Alyazh, a leading manufacturer of carbon products in Iran, has established a state-of-the-art facility dedicated to the production of high-quality GPC. The company utilizes a rigorous process that ensures consistent and reliable performance of its GPC products.

The production process involves the following key steps:

  • Selection of Petroleum Coke: Khorshid Alyazh carefully selects high-grade petroleum coke as the starting material, ensuring optimal properties for graphitization.
  • Heat Treatment: The selected petroleum coke is subjected to controlled heating in a furnace under an inert atmosphere. This step initiates the graphitization process and promotes the alignment of carbon atoms.
  • Graphitization: The heat-treated coke is further processed through a temperature-controlled graphitization furnace, typically above 2,500°C (4,532°F). During this stage, the carbon atoms rearrange into a highly ordered graphite structure, resulting in improved electrical and thermal conductivity.
  • Quality Control: Throughout the production process, Khorshid Alyazh employs stringent quality control measures to ensure the consistent performance of its GPC products.
Graphitized petroleum coke (GPC)

Properties and Applications of GPC

Khorshid Alyazh’s GPC possesses exceptional properties that make it suitable for various industrial applications, including:

  • High Electrical Conductivity: GPC’s highly ordered graphite structure allows for efficient electrical conductivity, making it ideal for use in electrodes, battery materials, and electrical components.
  • Low Thermal Expansion: GPC exhibits minimal thermal expansion, ensuring dimensional stability in applications such as refractories, crucibles, and high-temperature seals.
  • Excellent Chemical Resistance: GPC’s inert nature makes it highly resistant to chemical attack, enabling its use in corrosive environments and protective coatings.
  • Other Applications: GPC is also utilized in friction materials, aerospace components, and as an additive in carbon-based composites to enhance their properties.


Khorshid Alyazh’s Graphitized Petroleum Coke is a superior carbon material renowned for its exceptional properties. Through its advanced production process and rigorous quality control, the company delivers high-performance GPC products that meet the demands of various industries. The versatility and reliability of Khorshid Alyazh’s GPC make it a preferred choice for applications requiring optimal electrical and thermal conductivity, low thermal expansion, and excellent chemical resistance.


Khorshid Alyazh


Specification cokes
Size 1-5mm(Min.90%)
C 98%
M Max 0.5%
S Max 0.05%
A Max 0.7%
VM Max 0.5%