Effect of Iron Redox Equilibrium on the Foaming Behavior of MgO-Saturated Slags

Youngjoo Park; Dong Joon Min

doi:10.1007/s11663-018-1251-6

Effect of Iron Redox Equilibrium on the Foaming Behavior of MgO-Saturated Slags

Youngjoo Park, Dong Joon Min

Department of Materials Science and Engineering

Research output: Contribution to journal › Article

1 Citation (Scopus)

Abstract

In this study, the foaming index of CaO-SiO₂-Fe_tO and CaO-SiO₂-Fe_tO-Al₂O₃ slags saturated with MgO was measured to understand the relationship between their foaming behavior and physical properties. The foaming index of MgO-saturated slags increases with the Fe_tO content due to the redox equilibrium of Fe_tO. Experimental results indicated that MgO-saturated slag has relatively high ferric ion concentration, and the foaming index increases due to the effect of ferric ion. Therefore, the foaming behavior of MgO-saturated slag is more reasonably explained by considering the effect of ferric ion on the estimation of slag properties such as viscosity, surface tension, and density. Specifically, the estimation of slag viscosity was additionally verified by NBO/T, and this is experimentally obtained through Raman spectroscopy.

Original language	English
Pages (from-to)	1709-1718
Number of pages	10
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	49
Issue number	4
DOIs	https://doi.org/10.1007/s11663-018-1251-6
Publication status	Published - 2018 Aug 1

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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Park, Y., & Min, D. J. (2018). Effect of Iron Redox Equilibrium on the Foaming Behavior of MgO-Saturated Slags. Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 49(4), 1709-1718. https://doi.org/10.1007/s11663-018-1251-6

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abstract = "In this study, the foaming index of CaO-SiO2-FetO and CaO-SiO2-FetO-Al2O3 slags saturated with MgO was measured to understand the relationship between their foaming behavior and physical properties. The foaming index of MgO-saturated slags increases with the FetO content due to the redox equilibrium of FetO. Experimental results indicated that MgO-saturated slag has relatively high ferric ion concentration, and the foaming index increases due to the effect of ferric ion. Therefore, the foaming behavior of MgO-saturated slag is more reasonably explained by considering the effect of ferric ion on the estimation of slag properties such as viscosity, surface tension, and density. Specifically, the estimation of slag viscosity was additionally verified by NBO/T, and this is experimentally obtained through Raman spectroscopy.",

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