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

Chonglin Shi ORCID ; Yuxing Liu ORCID ; Kentaro Urata ORCID ; Shintaro Yasui ORCID ; Taichi Abe SAMURAI ORCID ; 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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Keyword: Thermodynamic analysis, MnAl2O4, CaO-SiO2-MgO-FeO-MnO-Al2O3 slag, Precipitation behavior

Date published: 2025-12-15

Publisher: Iron and Steel Institute of Japan

Journal:

  • ISIJ International (ISSN: 09151559) vol. 65 issue. 13 p. 2269-2274 ISIJINT-2025-334

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Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.2355/isijinternational.isijint-2025-334

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Updated at: 2025-12-25 15:09:33 +0900

Published on MDR: 2025-12-25 16:19:27 +0900

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