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Based on theoretical analysis and experimental data, the dynamic mixing effect of CO2/Ar/N2 blowing at the bottom of ladle in LF refining process was compared and analyzed. The results show that the stirring energyStirring energy of the molten pool is 5.16 W when the bottom is blown Ar/N2 and 10.17 W when the bottom is blown CO2. The kineticKinetics stirring effect of the bottom is good. When the mixing temperature increased from 1823 to 1923 K, the mixing energyEnergy of the bottom-blown CO2 molten pool gradually increased from 11.56 to 12.26 W. When the initial carbon content of molten pool decreases from 0.5 to 0.1%, the reaction ratio of CO2 to molten pool [C] decreases, and the mixing energyEnergy of molten pool with bottom-blown CO2 decreases from 12.05 to 9.09 W. As the carbon content of molten steel decreases, the mixing effect decreases slightly. The effect of CO2 blowing at the bottom of ladle is better than that of Ar and N2, and the development prospect is broad.

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Theoretical Analysis of CO2 Dynamic Stirring Effect in Ladle Bottom Blowing

  • 会议论文

  • 发表日期：

    2025年

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  • Haojie Shen,
  • Chenxiao Li,
  • Kaixuan Zhang,
  • Xin Meng,
  • Qianqian Gao,
  • Yongcong Wei

摘要

Based on theoretical analysis and experimental data, the dynamic mixing effect of CO2/Ar/N2 blowing at the bottom of ladle in LF refining process was compared and analyzed. The results show that the stirring energyStirring energy of the molten pool is 5.16 W when the bottom is blown Ar/N2 and 10.17 W when the bottom is blown CO2. The kineticKinetics stirring effect of the bottom is good. When the mixing temperature increased from 1823 to 1923 K, the mixing energyEnergy of the bottom-blown CO2 molten pool gradually increased from 11.56 to 12.26 W. When the initial carbon content of molten pool decreases from 0.5 to 0.1%, the reaction ratio of CO2 to molten pool [C] decreases, and the mixing energyEnergy of molten pool with bottom-blown CO2 decreases from 12.05 to 9.09 W. As the carbon content of molten steel decreases, the mixing effect decreases slightly. The effect of CO2 blowing at the bottom of ladle is better than that of Ar and N2, and the development prospect is broad.