In order to reduce the emission concentration of sintered flue gas pollutants, the source control technology and process control technology of iron ore sintering were adopted to reduce the emission concentration of flue gas pollutants. In this paper, the experiments of flue gas circulating sintering pot with charcoal instead of partial coke was carried out. The effects of O₂ content, temperature, SO₂ content and NO_x content in circulating flue gas on sinter properties and emission concentration of flue gas pollutants were studied. The experimental results show that the suitable oxygen content in flue gas was 14.9%, and the maximum suitable concentration of SO₂ was 500 ppm based on charcoal instead of 40% coke circulating flue gas sintering. The NO_x had little effect on the sintering performance index. Under the conditions of flue gas temperature of 200°C and CO content of 0.85%, the content of charcoal instead of coke was increased from 40% to 50%. The emission reduction of sintering flue gas pollutants SO₂ and NO_x was more than 42.6% and 65.8%, respectively. The comprehensive utilization of sintering flue gas waste heat and the cooperative control of sintering flue gas pollutants were realized.

为了降低烧结烟气污染物的排放浓度，采用了铁矿石烧结源控制技术和过程控制技术来降低烟气污染物的排放浓度。本文进行了以木炭代替部分焦炭的烟气循环烧结锅的实验。研究了循环烟气中O ₂含量，温度，SO ₂含量和NO _x含量对烧结矿性能和烟气污染物排放浓度的影响。实验结果表明，烟气中合适的氧含量为14.9％，SO ₂的最大合适浓度为以木炭为基准，其含量为500 ppm，而不是40％的焦炭循环烟气烧结。NO _x对烧结性能指标几乎没有影响。在烟气温度为200°C，CO含量为0.85％的条件下，用木炭代替焦炭的含量从40％增加到50％。烧结烟气污染物SO ₂和NO _x的减排量分别超过42.6％和65.8％。实现了烧结烟气余热的综合利用和烧结烟气污染物的协同控制。