Lead solubility in FeOx-CaO-SiO2 slags at iron saturation

Masami Kudo, Evgueni Jak, Peter Hayes, Katsunori Yamaguchi, Yoichi Takeda

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Experiments have been carried out to determine the equilibria between FeOx-CaO-SiO2 slag and lead metal in iron crucibles at temperatures ranging from 1473 to 1573 K. It has been found that the highest lead solubilities are observed in the silica-saturated iron silicate slags, while the lowest solubilities are observed in the CaO-saturated calcium ferrite slags. The activity coefficient of PbO varies from 0.15 to 3, depending on the slag composition. Changes in temperature do not have a significant impact on the activity coefficient. The activity of FeO and pct Fe3+/pct Fe2+ ratios have been determined as a function of slag composition. These new experimental data have been incorporated into an optimized thermodynamic slag model using the computer package FACT.

Original languageEnglish
Pages (from-to)15-24
Number of pages10
JournalUnknown Journal
Volume31
Issue number1
DOIs
Publication statusPublished - 2000 Jan 1

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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