Investigation of sulfide capacity of aluminosilicate slag based on ionic structure considerations

Sunghee Lee, Dong Joon Min

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


The present study investigated the relationship between sulfide capacity and the average nonbridging oxygens to tetrahedral cations (NBO/T) of CaO-SiO2-Al2O3-MgO slags. The sulfide capacity and NBO/T increase with increasing Al2O3/SiO2 ratio and XC aO due to increasing basicity. The inflected dependence of sulfide capacity and NBO/T observed at a eutectic composition. Thermodynamic investigations revealed that the inflected dependence is caused by the effects of mixing enthalpy and entropy components in eutectic composition. Quantitative analysis of sulfide capacity and NBO/T revealed a proportional linear relationship between the two variables. Based on these experimental results, the corresponding structure-property relationships concerning sulfide capacity, viscosity, and stability are discussed in detail.

Original languageEnglish
Pages (from-to)634-643
Number of pages10
JournalJournal of the American Ceramic Society
Issue number2
Publication statusPublished - 2018 Feb

Bibliographical note

Publisher Copyright:
© 2017 The American Ceramic Society

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry


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