What is Calcined Petroleum Coke

Calcining is the first process of heat treatment of petroleum coke. In general, the high temperature heat treatment temperature is around 1300 °C. The purpose is to remove impurities such as moisture, volatiles, sulfur and hydrogen in petroleum coke, and to change the structure and physical and chemical properties of various carbon materials.

This method can reduce the hydrogen content of the petroleum coke regenerated product and increase its degree of graphitization, thereby improving its mechanical strength, density, electrical conductivity and oxidation resistance.

At present, the calcination of petroleum coke in my country mainly adopts four methods: rotary kiln calcining, pot calcining furnace, rotary furnace and electric heating calcining furnace. Due to the different structure of some furnace types, the process is also very different.

Domestic and foreign electrolytic aluminum supporting pre-baked anodes and commercial pre-baked anode manufacturers mostly use tank-type forging furnaces and rotary kilns for calcining of petroleum coke. The heating method of tank-type forging furnaces is to use the heat emitted by refractory bricks Indirect heating is carried out, while the heating method of rotary kiln is to use combustion gas to directly contact the material for heating.