The thermodynamic behavior of copper in the CaO-B 2O 3 and BaO-B 2O 3 slag system

Dea Young Jang, Dong Joon Min

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7 Citations (Scopus)

Abstract

The Cu solubility was measured in the CaO-B 2O 3 and BaO-B 2O 3 slag systems to understand the dissolution mechanism of Cu in the slags. The Cu solubility had a linear relationship with oxygen partial pressure in the CaO-B 2O 3 slag system, which corresponds with previous studies. Also, the Cu solubilities in slag decreased with increasing the slag basicity, which value of slope was close to -0.5 in logarithmic form. From the results of experiment, the Cu dissolution mechanism established as follows: To compensate the effects of oxygen partial pressure and chemical potential of Cu in alloy on the Cu solubility of slag, the concept of cuprous capacity was suggested as follows: The cuprous capacity showed decreasing tendency as the slag basicity increased in the B 2O 3 bearing slags as well as in CaO-SiO 2-Al 2O 3(Satd.) and FeO-Fe 2O 3-SiO 2(Satd.) slag systems. It is suggested that the proposed dissolution mechanism could be available in various slag systems.

Original languageEnglish
Pages (from-to)1144-1149
Number of pages6
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume42
Issue number6
DOIs
Publication statusPublished - 2011 Dec 1

All Science Journal Classification (ASJC) codes

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

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