Desulfurization of High-Sulfur HIsarna Hot Metal

Frank N.H. Schrama*, Elisabeth M. Beunder, Ali Emami, Chris M. Barnes, Johan W.K. van Boggelen, Jilt Sietsma, Rob Boom, Yongxiang Yang

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The HIsarna process is one of the emerging low-CO2 ironmaking processes that could help the steel industry in achieving their carbon footprint goals. HIsarna hot metal contains 3–4 times more sulfur than hot metal from blast furnaces (BFs). Therefore, a literature study, a thermodynamic analysis, and plant data analysis from Tata Steel, IJmuiden, are used herein to investigate the consequences of HIsarna hot metal for the current hot metal desulfurization process. Although the high sulfur concentration and low temperature of HIsarna hot metal lead to a higher total reagent consumption, compared with desulfurization of BF hot metal, the specific magnesium consumption decreases. The higher oxygen concentration in HIsarna hot metal only leads to a small increase in reagent consumption.

Original languageEnglish
Number of pages8
JournalSteel Research International
DOIs
Publication statusPublished - 2021

Keywords

  • HIsarna
  • hot metal desulfurization
  • oxygen activity
  • plant data analyses
  • specific magnesium consumption
  • thermodynamic simulations

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