Thermodynamics of chromium oxides in CaO-SiO2-CaF2 slag

Yasushi Okabe*, Isao Tajima, Kimihisa Ito

*この研究の対応する著者

研究成果: Article査読

18 被引用数 (Scopus)

抄録

The distribution ratio of chromium between a CaO-SiO2-CaF2 slag and liquid silver under the oxygen partial pressure used in practical hot-metal dephosphorization treatment was measured at 1623 K. The distribution ratio was minimal when the basicity index of a slag, wt pct CaO/wt pct SiO2, was about 2. The redox equilibrium between CrO (Cr2+) and CrO1.5 (Cr3+) in the slag was also measured as a function of slag composition. The calculated activity coefficient of CrO had a maximum value at wt pct CaO/wt pct SiO2 = 2, whereas that of CrO1.5 decreased monotonously with the increase in slag basicity.

本文言語English
ページ(範囲)131-136
ページ数6
ジャーナルMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
29
1
DOI
出版ステータスPublished - 1998

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金
  • 材料化学

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