Study on Carbonization of Green Carbon Body under Pressure

Abstract

Coal tar pitch baked under pressurized Ar gas atmosphere has been found to yield considerably high coking value not only by itself but when blended in the green mix, as compared with the normal process so far utilized. The tests were examined under a variety of conditions of pressure and temperature, and led to the following conclusions: (1) The pressure built up in the vessel lowers the temperature and shortens the time for the completion of carbonization.(2) The baked products obtained in this way exhibit higher density, more strength and lower resistivity than those prepared through the normal process. Such effects on the physical properties have been increased further after graphitization by usual method.