Calcined Petroleum Coke (CPC) is a high-purity carbon material produced by heating green petroleum coke to drive off moisture and volatile organic compounds. The process of producing CPC can be broken down into the following steps:

Petroleum Coke Production: The raw material for CPC is green petroleum coke, which is a byproduct of the oil refining process. Green coke is typically produced at high temperatures in a delayed coker unit, which uses heat and pressure to break down heavy crude oil into lighter products.

Coke Drying: Green coke typically contains up to 15% moisture, which must be removed before the coke can be calcined. Drying is typically done in a rotary kiln, where the coke is heated to a temperature of around 600-700°C to drive off the moisture.

Calcination: The dried coke is then calcined at a temperature of around 1200-1350°C in a rotary kiln or vertical shaft kiln. Calcination removes any remaining volatile organic compounds (VOCs) and converts the coke into a high-purity carbon material with a fixed carbon content of typically 98-99%.

Grinding and Sizing: The calcined coke is then crushed and ground to the desired particle size, typically a few millimeters or less. The particle size and distribution of the CPC can be controlled to meet the requirements of specific applications.

Quality Control: Throughout the production process, the quality of the CPC is monitored to ensure that it meets the required specifications for purity, particle size, and other properties. Various tests may be performed, including chemical analysis, bulk density measurement, and thermal conductivity testing.

Packaging and Shipping: The final CPC product is typically packaged in bags or bulk containers and shipped to customers for use in various applications, including the production of aluminum, steel, and other industrial processes.