Study on graphitization of anthracite and petroleum coke catalyzed by boric acid

Abstract

Graphite carbon materials have excellent properties and are widely used. Traditional artificial graphite has high energy consumption and high cost, so reducing the energy consumption of artificial graphite has become a research hotspot in recent years. The effect of boric acid on the graphitization of anthracite and petroleum coke was studied, and the parameters such as boric acid content, roasting temperature and holding time were investigated in this paper. The results show that the optimum dosage of boric acid for graphitization of anthracite is 7.5%, and that of catalyst for graphitization of petroleum coke is 5%. The effect of roasting temperature on the graphitization of anthracite and petroleum coke catalyzed by boric acid is remarkable. The best temperature is 1400°C. Roasting holding time has positive effect on the graphitization of anthracite and petroleum coke catalyzed by boric acid. The best roasting holding time is 120min. Under the optimal experimental conditions, the highest graphitization degree of anthracite and petroleum coke catalyzed by boric acid are 23.58% and 23.56%, respectively. The effect of boric acid on anthracite is better than that of petroleum coke.