Research on evaluating the possibility of using red mud as a coalfired additive of thermal power plant in the Alumin-Tan Rai complex

With an aim to promote the combustion of pulverized coal, lots of experiments have been carried out by adding various inorganic compounds. In these studies, the most commonly used coal combustion catalysts include metal oxides (e.g. MnO₂, CaO, CeO₂, Fe₂O₃, CuO, and ZnO), alkaline metal salts (e.g. NaNO₃, NClO₄, KNO₃, KClO₃, and K₂CO₃), industrial wastes rich in these effective metal components as coal combustion promoters (e.g. steel slag, steel wastes,), which are both pure chemical reagents. The results indicated that the ignition temperature decreased and burnout index simultaneously increased with catalysts. The mentioned studies showed that alkaline earth metals, alkali metals, transition metal oxides, and other compounds, such as salts, can serve as supporting agents for coal combustion.