Interfacial reaction between different MgO-based refractories and the CaO-FeOx-SiO2 slag system at 1400°C

Junmo Jeon, Daniel Lindberg*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

Interfacial reactions between MgO-Al2O3, MgO-Cr2O3, and MgO-C refractories and the CaO-FeOx-SiO2 slag system were investigated at 1400 °C under Ar atmosphere. Sessile drop tests were carried out to observe the behaviors of the liquid CaO-FeOx-SiO2 slag with different basicities (CaO/SiO2: 0.25, 1.0, and 1.5) on the MgO-Al2O3, MgO-Cr2O3, and MgO-C refractories. Furthermore, the corrosion behaviors of MgO-Al2O3, MgO-Cr2O3, and MgO-C in contact with the liquid CaO-FeOx-SiO2 slag (S2, CaO/SiO2=1.0) were studied using immersion tests for 30 min. As a result, the MgO-Cr2O3 refractory showed higher resistance against the slags than the MgO-Al2O3 and MgO-C refractories, with less dissolution and no gas reactions. The chemical reaction between MgO-Al2O3 / MgO-Cr2O3 and slag was studied with thermodynamic modeling using the thermochemical software, FactSage 8.3. The calculation results were in good agreement with the results of the sessile drop test and immersion test.

Original languageEnglish
Article number117099
Number of pages9
JournalJournal of the European Ceramic Society
Volume45
Issue number5
Early online date30 Nov 2024
DOIs
Publication statusE-pub ahead of print - 30 Nov 2024
MoE publication typeA1 Journal article-refereed

Keywords

  • Corrosion behavior
  • Interfacial reaction
  • Refractory
  • Slag
  • Wetting behavior

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