Immobilization of fluorine dissolved from hot metal pretreatment slag

Ryo Inoue, Hideaki Suito

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


The immobilization of fluorine dissolved from hot metal pretreatment slag has been studied by using synthesized compounds such as calcium aluminates, calcium silicates, calcium aluminum silicates and calcium aluminum ferrites. Fluorine ion can be immobilized strongly by 3CaO·Al2O3, and moderately by 3CaO·SiO2. The F immobilization capability of calcium aluminum silicates decrease with increasing SiO2 content. Fluorine is effectively immobilized by calcium aluminum ferrites due to low hydration rate. The immobilization of fluorine proceeds effectively by using a secondary refining slag with low contents of SiO2 and total Fe.

Original languageEnglish
Pages (from-to)347-354
Number of pages8
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Issue number6
Publication statusPublished - 2002 Jun


  • Calcium aluminate
  • Calcium aluminum ferrite
  • Calcium aluminum silicate
  • Calcium silicate
  • Fluorine immobilization
  • Hot metal pretreatment slag
  • Secondary refining slag

ASJC Scopus subject areas

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


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