Production of petroleum coke (sponge coke)

Sponge coke, also known as petroleum coke or petcoke, is a carbon-rich solid material derived from the refining process of crude oil. It is produced when heavy residual oil undergoes thermal decomposition in a delayed coking unit. The resulting sponge coke has a porous and sponge-like structure, which gives it its name.

Sponge coke finds various applications across industries due to its unique properties. One of its primary uses is as a fuel source in industrial processes. It has a high calorific value, making it an ideal choice for power generation in cement kilns, boilers, and other energy-intensive operations. Additionally, its low ash and sulfur content make it an environmentally friendly alternative to coal.

Furthermore, sponge coke serves as a crucial raw material in the production of anodes for the aluminum industry. It is calcined at high temperatures to remove impurities and transform it into calcined coke, which is then used to manufacture carbon anodes. These anodes are essential for the electrolytic process of aluminum production.

Apart from fuel and anode manufacturing, sponge coke is also utilized in the production of graphite electrodes for electric arc furnaces. Graphite electrodes are crucial components in steelmaking, as they conduct electricity and generate the heat required to melt scrap metal and produce steel.