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Experimental Study on Charging Process in the COREX Melter Gasifier

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Abstract

Burden distribution plays an important role in achieving high stability and energy efficiency in the COREX melter gasifier. In this work, a 1/7.5 scale experimental apparatus is established to investigate the burden distribution under the independent and mixed charging conditions. The effects of GIMBAL distributor angle, rotational speed, DRI-flap angle, and charging pattern on these charging conditions are investigated. The results show that the non-uniform distribution of pellet in circumferential direction is intrinsic to the discharge system due to the shape of the DRI flap. The charging pattern has a significant impact on the ore-to-coal volume ratio and bed voidage. The ore-to-coal volume ratio reaches the peak at 550 to 650 mm, indicating that the reduction burden near the wall is heavier than that in the center. The voidage in the middle region is smaller than that of the center and near-wall region. The results also reveal the size segregation along the radial direction of the burden pile. The smaller particles tend to accumulate in the center while the larger ones segregate more near the wall. The findings obtained from experiments should be helpful for the efficient operation of the COREX melter gasifier.

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Acknowledgments

The research leading to the results reported in the current paper has been financially supported by the China Postdoctoral Science Foundation (Grant No. 2017M610769) and the National Natural Science Foundation of China (Grant No. 51174053). The China Scholarship Council (No. 201606080066) is also gratefully acknowledged for offering overseas study opportunities to the corresponding author (Yang You).

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Authors and Affiliations

  1. School of Metallurgy, Northeastern University, Shenyang, 110819, Liaoning, China

    Zhiguo Luo, Yang You, Haifeng Li & Zongshu Zou

  2. School of Materials Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia

    Yang You

  3. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Heng Zhou

Authors
  1. Zhiguo Luo
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  2. Yang You
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  3. Haifeng Li
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  4. Heng Zhou
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  5. Zongshu Zou
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Corresponding author

Correspondence to Yang You.

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Manuscript submitted July 20, 2017.

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Luo, Z., You, Y., Li, H. et al. Experimental Study on Charging Process in the COREX Melter Gasifier. Metall Mater Trans B 49, 1740–1749 (2018). https://doi.org/10.1007/s11663-018-1261-4

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  • DOI: https://doi.org/10.1007/s11663-018-1261-4

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