Lead solubility in FeO x-CaO-SiO 2-NaO 0.5 and FeO x-CaO-SiO 2-CrO 1.5 slags under iron saturation at 1573 K

Dai Matsura, Shigeru Ueda, Katsunori Yamaguchi

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The sodium and chromium contents in copper or lead smelting slags are increasing with the increase in waste recycling. The lead solubility in the slag is important from both an economical and environmental perspective. As a fundamental study, experiments have been carried out to determine the equilibria between the FeO x-CaO-SiO 2- 5mass%NaO 0.5 or FeO x-CaO-SiO 2-5mass%CrO 1.5 slags and lead metal in iron crucibles at 1573 K. It has been found that addition of soda decreases the lead solubility in SiO 2 rich side of the slag, while soda increases the solubility in CaO rich side. Chromium in the slag decreases the lead solubility in the FeO x-CaO-SiO 2 slag. The activity coefficients of PbO in the FeO x-CaO-SiO 2-5mass%NaO 0.5 or FeO x-CaO-SiO 2-5mass%CrO 1.5 slags were compared with those of the CaO-SiO 2-FeO x ternary system.

Original languageEnglish
Pages (from-to)441-446
Number of pages6
JournalHigh Temperature Materials and Processes
Volume30
Issue number4
DOIs
Publication statusPublished - 2011 Aug
Externally publishedYes

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Keywords

  • Activity coefficient
  • Lead smelting
  • Lead solubility
  • Reduction process

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Mechanics of Materials

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