Reducing the Sintering Flue Gas Pollutants Emissions Based on the Accumulation Heat Effect in Iron Ore Sintering Process

  • J. M. QieEmail author
  • C. X. Zhang
  • Y. H. Guo
  • H. F. Wang
  • S. L. Wu
Technical Paper


The pressure to reduce the emissions of the flue gas pollutants from iron ore sintering is enlarging increasingly. Based on the accumulation heat effect of sinter bed, the reasonable distribution of fuel in sinter bed was identified through the calculation of material balance and heat balance of raw materials. The sinter bed with a height of 300 mm was divided into three units, and the average available accumulation heat rate was about 38%. The reasonable coke powder addition ratio of each unit was 6.6%, 5.7%, and 5.2%, respectively, from the top to the bottom of sinter pot. The sinter-pot test results showed that the fuel consumption and the emissions of SO2, NOx, CO, and CO2 was reduced by 7.5 kg/t, 57.7%, 18.4%, 72.5%, and 31.7%, respectively, when compared with the conventional method in which the coke powder addition ratio of raw materials was 6.6%. Meanwhile, the sinter quality was improved.


Iron ore sintering Accumulation heat SO2 NOx CO CO2 



This work was supported by the National Key Research and Development Program of China under Grant No. 2017YFB0304001; National Key Research and Development Program of China under Grant No. 2017YFB0304301; National Natural Science Foundation of China under Grant No. 51234003.


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Copyright information

© The Indian Institute of Metals - IIM 2019

Authors and Affiliations

  1. 1.State Key Laboratory of Advanced Steel Process and ProductsCentral Iron and Steel Research InstituteBeijingPeople’s Republic of China
  2. 2.School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijingPeople’s Republic of China

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