Zhao Jingli

Influence of GPC Properties on the CPC Quality

A detailed study was carried out on green petroleum coke (GPC) from refineries in different locations in China and the corresponding calcined coke (CPC). The significant influence of GPC properties on the CPC quality was revealed. The content of ash and metal impurities such as Si, V, and Ni etc. increases during calcination, while the sulfur content is reduced. This shows that the sulfur in GPC from the different sources has a quite different reactivity due to the complex nature of sulfur and only a part of the sulfur reacts during calcination. The data revealed inhibition of CPC CO2 activity by sulfur. Sodium and calcium enhance the coke CO2 reactivity, while impurities such as vanadium and nickel promote air reactivity.

Study of Manufacturing Technology for High Quality Anodes

Based on R&D for the GPC from the different areas in China and anode manufacturing process a series of high quality anode manufacturing technologies are developed and shown in this paper, such as blending of GPC with different properties and element distributions, aggregate and high density paste recipe, pressure vibration forming and advanced baking system etc. By application of the mentioned above technologies the bulk density, conductivity and CO2 reactivity are greatly improved for high quality anode manufacturing. And the production technology of the complex configuration and structure anodes are developed and put into operation.