Scholarlink

<p>Electric arc furnace (EAF) steelmaking is emerging as a key low-carbon process for sustainable and large-scale steel production. Its successful implementation requires not only the development of environmentally friendly facilities but also the production of high-quality steel products, such as flat-rolled steel. Achieving this quality standard necessitates the effective removal of impurities, including tramp elements present in ferrous scrap. Among these tramp elements, Sn can be removed from EAF molten steel through evaporative refining in a vacuum refining reactor, such as the RH process. To investigate this, a systematic kinetic study was conducted to elucidate the evaporation mechanism of Sn under reduced pressure. The evaporation rate of Sn in molten steel containing C and S was measured using an electromagnetic levitation melting technique equipped with a rapid evacuation chamber. The results showed that the Sn evaporation rate increased as pressure decreased. Furthermore, the presence of S in the molten steel significantly accelerated Sn evaporation under reduced-pressure conditions. To better understand these observations, the existing reaction rate model for Sn evaporation from molten steel at atmospheric pressure (Tafwidli et al. in Metall Mater Trans B 49B:1089–1100, 2018, <a href="https://doi.org/10.1007/s11663-018-1198-7">https://doi.org/10.1007/s11663-018-1198-7</a>) was extended to account for vacuum refining conditions. The modified model suggests that, in the presence of S, Sn primarily evaporates as high-vapor-pressure SnS(g) under reduced pressure, significantly enhancing the efficiency of Sn removal.</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

Evaporation of Sn from Molten Fe–C–S Alloy Under Reduced Pressure at 1650 \(^\circ \)C for Developing Sustainable Ferrous Scrap Recycling Process

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年5月28日

查看全文
  • Hyun-Jae Kim,
  • Jung-Ho Park,
  • Jeong-Do Seo,
  • Soo-Chang Kang,
  • Youn-Bae Kang

摘要

Electric arc furnace (EAF) steelmaking is emerging as a key low-carbon process for sustainable and large-scale steel production. Its successful implementation requires not only the development of environmentally friendly facilities but also the production of high-quality steel products, such as flat-rolled steel. Achieving this quality standard necessitates the effective removal of impurities, including tramp elements present in ferrous scrap. Among these tramp elements, Sn can be removed from EAF molten steel through evaporative refining in a vacuum refining reactor, such as the RH process. To investigate this, a systematic kinetic study was conducted to elucidate the evaporation mechanism of Sn under reduced pressure. The evaporation rate of Sn in molten steel containing C and S was measured using an electromagnetic levitation melting technique equipped with a rapid evacuation chamber. The results showed that the Sn evaporation rate increased as pressure decreased. Furthermore, the presence of S in the molten steel significantly accelerated Sn evaporation under reduced-pressure conditions. To better understand these observations, the existing reaction rate model for Sn evaporation from molten steel at atmospheric pressure (Tafwidli et al. in Metall Mater Trans B 49B:1089–1100, 2018, https://doi.org/10.1007/s11663-018-1198-7) was extended to account for vacuum refining conditions. The modified model suggests that, in the presence of S, Sn primarily evaporates as high-vapor-pressure SnS(g) under reduced pressure, significantly enhancing the efficiency of Sn removal.