Previously, graphite petroleum coke was utilized in coking devices, which play a crucial role in the heat treatment process within the petrochemical industry. This process addresses the challenges associated with leftover oil, which is often of inferior quality and can complicate further processing. During the coking process, the residual oil is transformed into petroleum coke and various light petroleum products. The resulting coke is categorized into two types: ordinary and high-quality. The high-quality coke is ultimately processed into graphite petroleum coke. The distinction between these two types primarily lies in their suitability for producing electrodes and other high-quality graphite products.

Ordinary petroleum coke tends to be of lower quality, and the light oil products derived from it also exhibit poor quality, characterized by high carbon and metal content. Consequently, recycling is necessary to produce high-quality petroleum products. While natural graphite can be found in nature, synthetic graphite is frequently preferred in foundries due to its numerous advantages. Its properties, such as porosity, carbon content, and graphite composition, can be precisely controlled, allowing for versatile applications. Additionally, petroleum coke serves as a source for producing graphite.