Progress of hot metal treatmenttechnology and future outlook

Yuji Ogawa, Nobuhiro Maruoka

Research output: Contribution to journalReview articlepeer-review

18 Citations (Scopus)


Progress of hot metal treatment technology in Japan and scientific researches which supported the technology are outlined. To meet the increasingly severe customer requirements for steel properties, integrated steelmakers developed technologies for purifying molten steel,centering on the divided refining process, consisting of hot metal treatment, BOFdecarburization and secondary refining. The hot metal treatment processes were put intopractice at almost all steelworks in the 1980 s. Since the 1990 s, all companies have improved and restructured the hot metal treatment facilities, aiming at not only improvement of refining efficiency so as to achieve a higher degree of purity steel with higher productivity at lower cost, but also reduction in slag volume with the environmental problems taken into consideration. The directions in which hot metal treatment technology is to be pursued in the future are also commented briefly.

Original languageEnglish
Pages (from-to)434-444
Number of pages11
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Issue number4
Publication statusPublished - 2014


  • Dephosphorization
  • Desulfurization
  • Historical review
  • Hot metal treatment
  • Primary refining


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