Introduction to the application of efficient utilization system of coal gangue in reducing coal consumption in cement burning
To reduce coal consumption in cement production and achieve efficient and high-value utilization of coal gangue solid waste,a coal gangue efficient utilization system is designed.The system separately grinds coal gangue and sends it into the decomposi-tion furnace for combustion.When the coal gangue powder fed into the decomposition furnace is 3 t/h,the heat brought in by the coal gangue is 3.82 kg/t,and the heat consumption of the clinker during firing is decreased by 3.32 kg/t.Thermal efficiency of coal gangue powder is 86.95％,and benefit generated by coal saving is 393 yuan/h.After removing the processing cost of coal gangue powder,the economic benefits can be increased by 123 yuan/h,which is equivalent to a reduction of 0.95 yuan/t in unit clinker production cost.
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