Abstract
The top gas recycling oxygen blast furnace (TGR-OBF) is a new ironmaking process which can significantly reduce the coke ratio and emissions of carbon dioxide. To better understand the coal combustion characteristics in the TGR-OBF, a three dimensional model was developed to simulate the lance–blowpipe–tuyere–raceway of a TGR-OBF. The combustion characteristics of pulverized coal in TGR-OBF were investigated. Furthermore, the effects of oxygen concentration and temperature were also analyzed. The simulation results show that the coal burnout increased by 16.23% compared to that of the TBF. The oxygen content has an obvious effect on the burnout. At 70% oxygen content, the coal burnout is only 21.64%, with a decrease of 50.14% compared to that of TBF. Moreover, the effect of oxygen temperature is also very obvious.
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Acknowledgements
The authors gratefully acknowledge the financial support of the State Key Laboratory of Advanced Metallurgy (No. 41616018) as well as National Key Research and Development Program (No. 2016YFB0601304).
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Zhou, Z., Xue, Q., Tang, H. et al. Coal Combustion Behavior in New Ironmaking Process of Top Gas Recycling Oxygen Blast Furnace. JOM 69, 1790–1794 (2017). https://doi.org/10.1007/s11837-017-2515-3
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DOI: https://doi.org/10.1007/s11837-017-2515-3