Numerical Simulation on Influence of Coke Oven Gas Injection on Iron Ore Sintering

DOI Web Site 1 Citations 26 References
  • Ni Wenjie
    Key Laboratory of Ecological Utilization of Multi-metallic Mineral of Education Ministry, Northeastern University School of Metallurgy, Northeastern University
  • Li Haifeng
    Key Laboratory of Ecological Utilization of Multi-metallic Mineral of Education Ministry, Northeastern University School of Metallurgy, Northeastern University
  • Shao Lei
    Key Laboratory of Ecological Utilization of Multi-metallic Mineral of Education Ministry, Northeastern University School of Metallurgy, Northeastern University
  • Zou Zongshu
    Key Laboratory of Ecological Utilization of Multi-metallic Mineral of Education Ministry, Northeastern University School of Metallurgy, Northeastern University

Abstract

<p>Coke oven gas (COG) injection is believed to improve the quality and yield of sinter in iron ore sintering process. A mathematical model is developed to simulate the sintering process with COG injection, particularly focusing on predicting the quality and yield of sinter. The model is validated by comparing the model predictions with sintering pot test data. Numerical simulations are carried out to investigate the influences of location, quantity and covering area of COG injection on the sintering process. The results show that the location of COG injection has a little influence on its effectiveness on sintering, with that the sinter yield decreases slightly with the delay of COG injection while the mean melt quantity index (MQI) and cooling rate (CR) hardly change. The quantity of COG injection has a great influence on sintering. With a typical COG injection area of 40% and injection location of 60 s after ignition, the sinter yield increases by 33.3%, the mean MQI increases by 9.5% and the mean CR decreases by 37.6% when COG injection is 0.5%. The injection area of COG has some interesting influence on its effectiveness on sintering. Under the condition of 0.5% COG injection from 60 s after ignition, with the increase of injection area, the sinter yield increases prominently first and then decrease significantly, attaining its maximum at 40% of injection area. At the same time, the mean MQI and CR attain their extrema also at 40% of injection area.</p>

Journal

  • ISIJ International

    ISIJ International 60 (4), 662-673, 2020-04-15

    The Iron and Steel Institute of Japan

Citations (1)*help

See more

References(26)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top