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Study on the Combustion Performance and Industrial Tests of Coke Breeze in Shougang Jingtang Blast Furnace

Author

Listed:
  • Yuzhuo Yang

    (Manufacturing Department, Shougang Jingtang United Iron & Steel Co., Ltd., Tangshan 063210, China)

  • Junyi Wu

    (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Shengtao Liu

    (Manufacturing Department, Shougang Jingtang United Iron & Steel Co., Ltd., Tangshan 063210, China)

  • Guangze Kan

    (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Jianlong Wu

    (Jingtang Technology Center, Technology Research Institute, Shougang Jingtang United Iron & Steel Co., Ltd., Tangshan 063210, China)

  • Shengli Wu

    (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Guangwei Wang

    (School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China)

Abstract

In this study, the feasibility indicators of the injection of coke breeze for blast furnaces (BFs) were tested. Experiments were conducted on the combustion behavior of coke breeze at different particle sizes, and the effects of ratio of coke breeze in pulverized coal on the combustion performance of blends were studied. On the basis of the above experiments, industrial tests involving injecting coke breeze after milling were carried out in 3# BF of Shougang Jingtang. The results show that most of the coke breeze particle sizes were distributed above 1 mm. The grindability and combustion performance are poor, so the material needs to be ground before mixing with pulverized coal. The best combustibility can be obtained by using a particle size of less than 8.74 μm of coke breeze in the injection. With the increase in the coke breeze ratio, the combustion performance of blended coal worsened; the negative effects of coke breeze can be improved by increasing the proportion of bituminous coal. According to the results of industrial tests, 8% coke breeze in blends had no negative effect on the smelting state, and the output of the BF increased slightly. Industrial tests proved that coke breeze can partly replace anthracite for BF injecting, which reduced the cost of hot metal while realizing the high value-added resource utilization of coke breeze.

Suggested Citation

  • Yuzhuo Yang & Junyi Wu & Shengtao Liu & Guangze Kan & Jianlong Wu & Shengli Wu & Guangwei Wang, 2023. "Study on the Combustion Performance and Industrial Tests of Coke Breeze in Shougang Jingtang Blast Furnace," Energies, MDPI, vol. 16(10), pages 1-15, May.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:10:p:4214-:d:1151536
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    References listed on IDEAS

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    1. Wang, Guangwei & Zhang, Jianliang & Lee, Jui-Yuan & Mao, Xiaoming & Ye, Lian & Xu, Wanren & Ning, Xiaojun & Zhang, Nan & Teng, Haipeng & Wang, Chuan, 2020. "Hydrothermal carbonization of maize straw for hydrochar production and its injection for blast furnace," Applied Energy, Elsevier, vol. 266(C).
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