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<p>This paper designs and optimizes the structure of a traditional oxygen lance and uses numerical simulation and industrial experiments to study the effects of the gas outlet diameter and center diameter of the oxygen lance on the jet velocity, molten steel impact, cross-sectional kinetic energy, and radial stirring distance of the molten pool. Both computational fluid dynamic simulations and industrial applications are used in the structural design of a 150-ton converter oxygen gun. The effect of the oxygen gun structure on the velocity field of the oxygen jet is accurately predicted, and the optimal oxygen gun structure is optimized. Reducing the oxygen lance diameter of the gas outlet and the center diameter can increase the jet velocity and improve the effective impact area and radial stirring distance of the gas flow on the molten steel, and the effect of reducing the center diameter of the oxygen lance is better than that of reducing the diameter of the oxygen lance gas outlet. The airflow velocity of the new oxygen lance with a central hole is significantly higher than that of the traditional oxygen lance.</p>

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Structure Design and Optimization of a 150t Converter Oxygen Lance Under High Oxygen Supply Intensity

  • 期刊论文

  • 发表日期：

    2025年5月27日

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  • Jian Wang,
  • Zhizhong Cao,
  • Jun Liu,
  • Hongliang Liu,
  • Mingguang Li,
  • Wenhui Xue,
  • Jiaxu Jin,
  • Guangqiang Liu,
  • Di Wu,
  • Yufeng Liu

摘要

This paper designs and optimizes the structure of a traditional oxygen lance and uses numerical simulation and industrial experiments to study the effects of the gas outlet diameter and center diameter of the oxygen lance on the jet velocity, molten steel impact, cross-sectional kinetic energy, and radial stirring distance of the molten pool. Both computational fluid dynamic simulations and industrial applications are used in the structural design of a 150-ton converter oxygen gun. The effect of the oxygen gun structure on the velocity field of the oxygen jet is accurately predicted, and the optimal oxygen gun structure is optimized. Reducing the oxygen lance diameter of the gas outlet and the center diameter can increase the jet velocity and improve the effective impact area and radial stirring distance of the gas flow on the molten steel, and the effect of reducing the center diameter of the oxygen lance is better than that of reducing the diameter of the oxygen lance gas outlet. The airflow velocity of the new oxygen lance with a central hole is significantly higher than that of the traditional oxygen lance.