Scholarlink

<p>The hydrogen-based steelmaking process toward carbon neutrality also produces a considerable amount of slag. This study aims to see the effect of impurities in the liquid metal during desulfurization by hydrogen plasma toward sustainable steelmaking with the least or no slag generation. A laboratory scale transferred arc plasma furnace was used to study sulfur removal from liquid iron, varying H<sub>2</sub>–Ar gas mixtures up to 70 minutes of exposure. Binary (Fe–S), Ternary (Fe–C–S, Fe–Mn–S, and Fe–Si–S), and multicomponent systems (Fe–C–Si–Mn–S–P) were prepared for this study. Observation made that maximum desulfurization achieved by 1&#xa0;L/minute H<sub>2</sub> + 1&#xa0;L/minute Ar gas mixture flow rate. Fe–S system attained the highest sulfur removal (~ 87&#xa0;pct) followed by Fe–C–Si–Mn–S–P (~ 81 pct), Fe–C–S (~ 81 pct), Fe–Mn–S (~ 66 pct), and Fe–Si–S (~ 46 pct). In binary systems, due to the absence of any other impurities, the removal rate was highest followed by ternary and multicomponent systems. As the present system was not fully airtight, the air infiltration caused the formation of a thin slag layer above the melt surface during the preparation of Fe–Mn–S and Fe–Si–S ternary melt, which restricted the effective reaction of hydrogen plasma resulting in less desulfurization.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Sustainable Steel Refining by Hydrogen Plasma: Effect of Impurities on Desulfurization of Liquid Iron

  • 期刊论文

  • 发表日期：

    2025年6月24日

查看全文
  • Ramesh Kumar,
  • Arup Kumar Mandal

摘要

The hydrogen-based steelmaking process toward carbon neutrality also produces a considerable amount of slag. This study aims to see the effect of impurities in the liquid metal during desulfurization by hydrogen plasma toward sustainable steelmaking with the least or no slag generation. A laboratory scale transferred arc plasma furnace was used to study sulfur removal from liquid iron, varying H2–Ar gas mixtures up to 70 minutes of exposure. Binary (Fe–S), Ternary (Fe–C–S, Fe–Mn–S, and Fe–Si–S), and multicomponent systems (Fe–C–Si–Mn–S–P) were prepared for this study. Observation made that maximum desulfurization achieved by 1 L/minute H2 + 1 L/minute Ar gas mixture flow rate. Fe–S system attained the highest sulfur removal (~ 87 pct) followed by Fe–C–Si–Mn–S–P (~ 81 pct), Fe–C–S (~ 81 pct), Fe–Mn–S (~ 66 pct), and Fe–Si–S (~ 46 pct). In binary systems, due to the absence of any other impurities, the removal rate was highest followed by ternary and multicomponent systems. As the present system was not fully airtight, the air infiltration caused the formation of a thin slag layer above the melt surface during the preparation of Fe–Mn–S and Fe–Si–S ternary melt, which restricted the effective reaction of hydrogen plasma resulting in less desulfurization.