Determination of the ignition temperature of mechanically activated carbon of various degrees of metamorphism and type of grinding

Abstract

The experiments carried out using two methods of TGA (thermogravimetric analysis) made it possible to determine the ignition temperatures for brown coal, hard coal and anthracite treated both with activator mills (VCM, disintegrator) and with a standard hammer mill (initial coal). Practically all the results of coal ignition obtained by different methods correlate with each other. They show a decrease in the ignition temperature of micromilled coals during mechanically activated grinding. The analysis of the results of experimental studies made it possible to calculate kinetic parameters such as the ignition index, the maximum burning rate, the burnout index, and the comprehensive index. The data obtained are new and prove the effectiveness of mechanical activation treatment of coal fuel.