Phase relation of CaO-Al2O3-Fe1O-P 2O5 slag and phosphorus distribution between this slag and liquid iron

Kei Watanabe, Takahiro Miki, Yasushi Sasaki, Mitsutaka Hino

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Amount of steelmaking slag emission is increasing due to strong demand for high quality steel. Development of slag and process that can remove impurity at high efficiency is required to decrease slag discharge volume. Phosphorus is a typical impurity in steel and it can be removed by slag with high CaO and Fe,O activity. CaO-Fe1O-P2O5 system has two liquid phase region that has CaO and Fe,O high activity. It was confirmed that CaO-MgO-Fe,O-P2O5 two liquid phase slag can remove phosphorus at high efficient in the previous work. The phase relation and ability of phosphorus removal by CaO-Al2O3-Fe,O-P 2O5 system was investigated in the present work.

Original languageEnglish
Pages (from-to)217-221
Number of pages5
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Issue number3
Publication statusPublished - 2009


  • CaO-AlO-FeO-PO system
  • Phase relation
  • Phosphorus
  • Slag
  • Two liquid phase

ASJC Scopus subject areas

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


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