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Solid Flow in an Experimental Oxygen Blast Furnace Model: Effects of Recycled Gas and Raceway

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  • Yuanxiang Lu

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Zeyi Jiang

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
    Beijing Key Laboratory for Energy Saving and Emission Reduction of Metallurgical Industry, University of Science and Technology Beijing, Beijing 100083, China)

  • Xinru Zhang

    (School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China
    Beijing Engineering Research Center of Energy Saving and Environmental Protection, University of Science and Technology Beijing, Beijing 100083, China)

  • Dianyu E

    (Jiangxi Provincial Key Laboratory for Simulation and Modelling of Particulate Systems, Jiangxi University of Science and Technology, Nanchang 330013, China
    International Institute for Innovation, Jiangxi University of Science and Technology, Nanchang 330013, China)

Abstract

The oxygen blast furnace (OBF) process with top gas recycling is recognized as a promising ironmaking process, due to its high productivity and low CO 2 emissions. The solid flow plays a crucial role in this process. Therefore, the solid flow in OBF was investigated using a cold experimental OBF model in this paper. The results indicate that the plug flow is the primary solid flow pattern in the upper and middle zones of the OBF. A slight convergence flow and a smaller deadman zone were observed at the bosh. The influence of recycled gas on solid flow was found to be quite limited. Additionally, the raceway size affects the burden structure and deadman zone, but the production rate had little impact. Both the raceway size and production rate have different effects on the repose angle of the deadman zone, and it varies by 14–18°. The findings of this study may have important implications for understanding the structure of solid flow in OBF. The results can be used to optimize the process parameters and equipment design to improve the efficiency of iron production while reducing environmental impact.

Suggested Citation

  • Yuanxiang Lu & Zeyi Jiang & Xinru Zhang & Dianyu E, 2024. "Solid Flow in an Experimental Oxygen Blast Furnace Model: Effects of Recycled Gas and Raceway," Energies, MDPI, vol. 17(2), pages 1-12, January.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:2:p:309-:d:1315014
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    References listed on IDEAS

    as
    1. Zedong Zhang & Jue Tang & Quan Shi & Mansheng Chu, 2023. "Effects of Shaft Tuyere Parameters on Gas Movement Behavior and Burden Reduction in Oxygen Blast Furnace," Sustainability, MDPI, vol. 15(12), pages 1-19, June.
    2. Jiayuan Song & Zeyi Jiang & Yongjie Zhang & Zhicheng Han & Yuanxiang Lu & Huiyao Dong & Ying Zhang, 2023. "Economic Analysis of an Integrated Steel Plant Equipped with a Blast Furnace or Oxygen Blast Furnace," Sustainability, MDPI, vol. 15(15), pages 1-14, August.
    3. Zhang, Wei & Zhang, Juhua & Xue, Zhengliang, 2017. "Exergy analyses of the oxygen blast furnace with top gas recycling process," Energy, Elsevier, vol. 121(C), pages 135-146.
    4. Liu, Lianzhi & Jiang, Zeyi & Zhang, Xinru & Lu, Yuanxiang & He, Junkai & Wang, Jingsong & Zhang, Xinxin, 2018. "Effects of top gas recycling on in-furnace status, productivity, and energy consumption of oxygen blast furnace," Energy, Elsevier, vol. 163(C), pages 144-150.
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