Thermodynamic Investigation of MnAl<sub>2</sub>O<sub>4</sub> Spinel Precipitation Behavior in Manganese Containing-Slag Systems

Chonglin Shi; Yuxing Liu; Kentaro Urata; Shintaro Yasui; Taichi Abe; Yoshinao Kobayashi

doi:10.2355/isijinternational.isijint-2025-334

論文 Thermodynamic Investigation of MnAl₂O₄ Spinel Precipitation Behavior in Manganese Containing-Slag Systems

Chonglin Shi ; Yuxing Liu ; Kentaro Urata ; Shintaro Yasui ; Taichi Abe ; Yoshinao Kobayashi

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Chonglin Shi, Yuxing Liu, Kentaro Urata, Shintaro Yasui, Taichi Abe, Yoshinao Kobayashi. Thermodynamic Investigation of MnAl₂O₄ Spinel Precipitation Behavior in Manganese Containing-Slag Systems. ISIJ International. 2025, 65 (13), ISIJINT-2025-334. https://doi.org/10.2355/isijinternational.isijint-2025-334

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(abstract)

In this study, the chemical equilibrium experiments were systematically conducted at 1673 K under an oxygen partial pressure of 10-13 atm to investigate the precipitation of MnAl2O4 spinel in the CaO–SiO2–MgO–FeO–MnO–Al2O3 slags. The results showed that with increasing Al2O3 content, Mn gradually transferred from the silicate liquid phase into the spinel phase.

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