Development of the continuous dephosphorization and decarburization process using BOF

Yuji Ogawa, Masataka Yano, Shinya Kitamura, Hiroshi Hirata

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)

Abstract

The authors proposed a new refining process. In this process, the hot metal is dephosphorized and decarburized continuously with intermediate deslagging after dephosphorization in the same converter. The slag after decarburization is remained in the converter and reused to the dephosphorization of the next charge, so as to minimize the amount of exhausted slag. The experiments with 8-ton scale converter were performed to make clear the properties of this process. The high productivity was confirmed, because the dephosphorization rate could be increased with the high oxygen blowing rate and the addition of iron ore. The lime consumption was relatively low due to the dephosphorization with low basicity slag and hot recycling of decarburization slag to the next dephosphorization. The proper conditions, such as slag composition in dephosphorization, the rate of oxygen supply, bottom stirring and the intermediate deslagging rate, were also discussed by the basis of experimental results.

Original languageEnglish
Pages (from-to)21-28
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume87
Issue number1
DOIs
Publication statusPublished - 2001

ASJC Scopus subject areas

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

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