A new carbon reduction technology of fuel separated addition in sintered material surface coupled with low temperature ignition
In order to reduce the energy consumption and carbon emission of sintering process,a new technology of fuel separated addition in sintered material surface coupled with low temperature ignition was proposed,which could significantly reduce the ignition temperature under the premise of ensuring ignition effect,by adding 5％-7％of the total fuel on the surface of sintered layer and using the rakes and levelling boards to make the fuel uniformly distrib-uted.Thereby,the consumption of solid fuel and ignition gas were reduced.The technology has been applied in Xiangtan Iron and Steel Co.,Ltd.,and the practical results show that,after adopting the technology,the ignition temperature of three sintering machines has decreased by 16％-27％,the flow rate of gas fuel has decreased by 640-1 900 km3/h,and the ignition energy consumption of sintered ore has decreased by 0.007-0.038 GJ/t.Meanwhile,the intensity of rotating drum is maintained at the original level,and the solid fuel consumption of sintered ore is re-duced,the SO2 and NOx content in the flue gas decreases significantly.The application of the new technology achieves energy saving and carbon reduction result.
low carbon sinteringlow temperature ignitionfuel separated additionreduction of pollutant emissionindustrial application
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