Calcined petroleum coke (CPC)

Calcined Petroleum Coke: A Versatile Carbon Material from Khorshid Alyazh

Calcined petroleum coke (CPC) is a high-value carbon material derived from petroleum coke, a byproduct of oil refining. Unlike graphitized petroleum coke, which undergoes a graphitization process, CPC is produced through a controlled heat treatment process known as calcination. This process alters the structure and properties of petroleum coke, making it suitable for a wide range of industrial applications.

Production of Calcined 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 CPC. The company utilizes a rigorous process that ensures consistent and reliable performance of its CPC 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 calcination.
  • Calcination: The selected petroleum coke is subjected to controlled heating in a furnace under an inert atmosphere. The temperature and duration of calcination are carefully controlled to achieve the desired properties.
  • Quality Control: Throughout the production process, Khorshid Alyazh employs stringent quality control measures to ensure the consistent performance of its CPC products.
Graphitized petroleum coke (GPC) - Calcined petroleum coke (CPC)

Properties and Applications of CPC

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

  • High Reactivity: CPC exhibits high reactivity due to its increased surface area and porosity, making it ideal for use in electrodes and anode materials in batteries and fuel cells.
  • Low Electrical Conductivity: Unlike graphitized petroleum coke, CPC has a lower electrical conductivity, making it suitable for applications where electrical insulation is required.
  • High Thermal Conductivity: CPC’s porous structure allows for efficient thermal conductivity, making it useful in heat exchangers, thermal insulation, and refractory materials.
  • Other Applications: CPC is also utilized in friction materials, carbon brushes, and as an additive in carbon-based composites to enhance their properties.


Khorshid Alyazh’s Calcined Petroleum Coke is a versatile carbon material renowned for its unique combination of properties. Through its advanced production process and rigorous quality control, the company delivers high-performance CPC products that meet the demands of various industries. The high reactivity, low electrical conductivity, and high thermal conductivity of Khorshid Alyazh’s CPC make it a preferred choice for applications in batteries, fuel cells, heat exchangers, and other industrial processes.


Khorshid Alyazh


Specification CPC C > 98% - S < 0.6%
Size 1-5mm(Min.90%)
C Min 98.5%
M Max 0.5%
S Max 0.6%
A Max 0.5%
VM Max 0.6%