Inclusion separation from molten steel in tundish with rotating electromagnetic field

Yuji Miki, Hidenari Kitaoka, Nagayasu Bessho, Toshikazu Sakuraya, Shigeru Ogura, Masaaki Kuga

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


A new process was devised for promoting inclusion separation from the molten steel in the tundish. The process utilizes electromagnetic force to rotate molten steel in a cylindrical tundish. The centrifugal force caused by the rotational flow promotes separation of inclusions. This tundish is referred to as the Centrifugal Flow Tundish (the CF tundish). Industrial plant tests carried out at Chiba works showed that the CF tundish has an excellent deoxidation performance estimated at 0.17-0.25 min-1 as deoxidation rate constant. The mechanism of inclusion separation in the CF tundish is also discussed. Centripetal force and large turbulence energy caused by rotational flow accelerate inclusion separation. Furthermore, residence time distribution of molten steel in a tundish is improved and it promotes slag removal during ladle exchange. This process is successfully used in commercial production of stainless steels slabs with high quality.

Original languageEnglish
Pages (from-to)498-503
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Issue number6
Publication statusPublished - 1996
Externally publishedYes

ASJC Scopus subject areas

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


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