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<p>Converter steelmaking technology plays a pivotal role in the production of clean steel, energy efficiency, and low-carbon steelmaking. Notably, the medium converter represents a substantial proportion of the equipment in steel plants. However, the effectiveness of bottom-blowing stirring is a limiting factor in the smelting efficiency of medium converters. This work introduces a novel, systematic approach to bottom blowing that addresses the issue of inadequate stirring in medium converters. The optimal bottom blowing arrangement for medium converter is at 0.3–0.6<i>D</i> with 15° included angle, which results in the most intense stirring effect within the molten bath. Compared to ordinary bottom-blowing configurations, the novel arrangement leads to a 2.2% reduction in the dead zone ratio, a 9-s reduction in mixing time, and a 26% increase in the intense stirring zone ratio. These results provide both theoretical insights and practical guidance for optimizing bottom-blowing processes in medium converters.</p>

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Enhancement of Turbulent Flow in Medium Converter by Orifice Positions

  • 期刊论文

  • 发表日期：

    2025年10月23日

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  • Bo Wang,
  • Chunkun Wu,
  • Lianyu Wang,
  • Guiying He,
  • Qiyan Zhao,
  • Xinyu Gao,
  • Lianping Yang,
  • Kun Liu

摘要

Converter steelmaking technology plays a pivotal role in the production of clean steel, energy efficiency, and low-carbon steelmaking. Notably, the medium converter represents a substantial proportion of the equipment in steel plants. However, the effectiveness of bottom-blowing stirring is a limiting factor in the smelting efficiency of medium converters. This work introduces a novel, systematic approach to bottom blowing that addresses the issue of inadequate stirring in medium converters. The optimal bottom blowing arrangement for medium converter is at 0.3–0.6D with 15° included angle, which results in the most intense stirring effect within the molten bath. Compared to ordinary bottom-blowing configurations, the novel arrangement leads to a 2.2% reduction in the dead zone ratio, a 9-s reduction in mixing time, and a 26% increase in the intense stirring zone ratio. These results provide both theoretical insights and practical guidance for optimizing bottom-blowing processes in medium converters.