Partitions of Nitrogen and Sulfur between CaO-AI2O3 Melts and Liquid Iron

Ryo Inoue, Hajime Inoue, Hideaki Suito

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Nitrogen and sulfur distribution ratios between CaO-AI203 slags and Fe-0.0001-33mass%AI alloys were measured in the temperature range of 1 823 to 1 923 K, using an Al203 and CaO crucibles. The distribution ratios under a CaO crucible were higher than those under an Al2O3 crucible, and increased with an increase of Al content. Nitride and sulfide capacities defined by CN3- = (mass%N). P and CS2- = (mass%S) - P, respectively, which were obtained by using the reported values for activity of Al203, agreed well with those directly measured in a gas-slag experiment under an Al203 crucible, but disagreed with those under a CaO crucible. Activities of Al203 in the CaO-AI2O3 melts saturated with CaO were evaluated based on the results in the gas-slag experiments.

Original languageEnglish
Pages (from-to)1389-1395
Number of pages7
JournalIsij International
Volume31
Issue number12
DOIs
Publication statusPublished - 1991 Jan

Keywords

  • CaO-AI203 slag
  • Fe-AI alloy
  • activity of Al203
  • distribution ratio
  • nitride capacity
  • nitrogen
  • sulfide capacity
  • sulfur

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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