Removal of copper from molten iron with Na2CO3-FeS fluxes

Yu Ichi Uchida, Akitoshi Matsui, Yasuo Kishimoto, Yuji Miki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In order to develop a practical method of Cu removal from the viewpoints of promoting utilization of scrap procured in the market and reduction of energy consumption, it is necessary to develop a practical method of Cu removal. In this study, Cu removal from hot metal by sulfidation of Cu was identified as a potential candidate for industrial use and was investigated in laboratory experiments using ferrous sulfide (FeS) and sodium carbonate (Na 2CO3) as commercially-available fluxes. A laboratory experiment on removal of Cu from hot metal was carried out using a 10 kg-scale furnace. Cu removal occurred while feeding the Na2CO3-FeS fluxes, and stopped after the end of flux feed. In the experimental temperature range, lower temperatures were advantageous for Cu removal reflecting the exothermic nature of Cu sulfidation. The dependence of Cu removal on the composition of the hot metal was also confirmed based on the analysis in terms of Cu partition ratio.

Original languageEnglish
Pages (from-to)769-777
Number of pages9
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Issue number6
Publication statusPublished - 2014
Externally publishedYes


  • Cu partition ratio
  • Cu removal
  • Ferrous sulfide
  • Flux
  • Hot metal
  • Optical basicity
  • Sodium carbonate
  • Sulfidation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry


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