A PROCESS FOR THE PRODUCTION OF 4-H GRAPHITE BY THERMAL PLASMA HEAT TREATMENT OF CALCINED PETROLEUM COKE POWDER

摘要

Synthetic graphite because of its superior physico-electrical properties is extensively utilized in the production of high temperature lubricant, colloidal grease, as a filler material in the production of bearings and production of many sintered products. The conventional resistance heating method for the production of graphite powder from amorphous carbon powder requires heating of carbon charge to high temperature of 2600°C for several hours (24-48 h), even electric arc furnace heating requires heating of amorphous carbon charge to peak temperature of 2600°C for a minimum of 4h. The present invention relates to a process of production of 4-H graphite powder from quasi-amorphous cpc powder by thermal plasma route as covered in examples and claims. The process is energy efficient and product obtained shows high degree of graphitisation. The physico-electrical properties the product are comparable to commercially available graphite powder.