Deoxidization Equilibria with Zirconium and Sulfur Partition for Molten Iron/CaO‐Al 2 O 3 ‐ZrO 2  Slag at 1873K | Zendy

Seki Ichiro | Zendy; Tanabe Jun | Zendy; Nagata Kazuhiro | Zendy

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Deoxidization Equilibria with Zirconium and Sulfur Partition for Molten Iron/CaO‐Al 2 O 3 ‐ZrO 2 Slag at 1873K

Author(s) -

Seki Ichiro,

Tanabe Jun,

Nagata Kazuhiro

Publication year - 2008

Publication title -

steel research international

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.603

H-Index - 49

eISSN - 1869-344X

pISSN - 1611-3683

DOI - 10.1002/srin.200806204

Subject(s) - crucible (geodemography) , zirconium , sulfur , sulfide , materials science , slag (welding) , metallurgy , deoxidization , partition coefficient , oxygen , inorganic chemistry , wüstite , mineralogy , chemistry , oxide , computational chemistry , organic chemistry , chromatography

The relationship of zirconium and oxygen concentrations with sulfide capacity was clarified using equilibrated molten iron with CaO‐Al 2 O 3 ‐ZrO 2 slag at 1873 K. Al 2 O 3 and CaO‐stabilized ZrO 2 crucible saturated compositions were equilibrated with CaO‐2Al 2 O 3 and crucible solid solution (Css) in the CaO‐ZrO 2 system, and with CaOZrO 2 and Css, respectively. From the concentrations of zirconium and oxygen dissolved in molten iron, ZrO 2 activities of the slag of the Al 2 O 3 crucible and ZrO 2 crucible compositions were determined to be 0.885 and 0.0343, respectively. On the other hand, the sulfur distribution ratio of the ZrO 2 crucible saturated composition was higher than that of the Al 2 O 3 crucible saturated composition. Sulfide capacities were determined to be 6.30×10 −5 and 8.07×10 −5 in the Al 2 O 3 and the ZrO 2 crucible saturated compositions, respectively.

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