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Numerical Study of Swirling Effect on Enhancing the Bath Dynamics in the Top-Submerged-Lance Furnace

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Abstract

The volume of fluid (VOF) multiphase model is adopted to numerically investigate the gas-melt flow dynamics within an industrial-scale top-submerged-lance (TSL) furnace. After the model validation, the impact of chaotic swirling flow on the bath dynamics (including velocity field, stirring zone, splashing characteristics, and cavity dimensions) in the TSL furnace is explored by incorporating a swirling generator. The results demonstrate that (i) the stirring effect of immersion injections on the majority of molten pool is limited. Compared to the non-swirling flow configuration, the addition of swirling generator increases the stirring zone of the bath by nearly 10 pct; (ii) the swirling generator reduces the penetration depth of the submerged jet into the molten pool but obviously increases the cavity width; (iii) the addition of swirling flow results in a more stable cavity, with a smaller splashing volume and lower splashing height of the melt compared to the TSL with the non-swirling flow configuration. These findings provide a new perspective on the impact of swirling flow configuration in the lance on the multiphase flow characteristics in the bath, which can be valuable for enhancing the understanding and industrial applications of TSL furnace regarding design, operation, and optimization.

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Acknowledgments

The authors thank the financial support from the Applied Basic Research Project of Yunnan Province, China (No. 202301AT070411).

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Authors and Affiliations

  1. State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, 650093, Yunnan, P.R. China

    Zhongyu Du, Shiliang Yang, Guirong Bao & Hua Wang

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  1. Zhongyu Du
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  2. Shiliang Yang
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  3. Guirong Bao
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  4. Hua Wang
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Correspondence to Shiliang Yang or Hua Wang.

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Du, Z., Yang, S., Bao, G. et al. Numerical Study of Swirling Effect on Enhancing the Bath Dynamics in the Top-Submerged-Lance Furnace. Metall Mater Trans B 54, 3115–3129 (2023). https://doi.org/10.1007/s11663-023-02894-2

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  • DOI: https://doi.org/10.1007/s11663-023-02894-2

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