Catalytic Combustion of Inferior Coal in the Cement Industry by Thermogravimetric Analysis

Abstract

Catalytic combustion of Huarun anthracite in cement industry with NaClO4, MnO2, and ZnO was studied using thermogravimetric analysis. Ignition temperature, burnout index, and the quantity of heat releasing had been put forward to describe the catalytic activity. The results indicated that the catalysts can decrease the ignition temperature and increase the burnout index simultaneously; the catalytic activity of the catalysts on the ignition and burnout characteristics were in the order of NaClO4 > MnO2 > ZnO and MnO2 > ZnO > NaClO4, respectively. Furthermore, the quantity of heat releasing of the coal with NaClO4 was the highest. Thus, NaClO4 had an excellent performance among these catalysts. Catalyzed combustion mechanisms of the coal samples were also discussed.%