Properties of liquid CaO–SiO2 and CaO–SiO2-‘Fe2O3’tot slags measured by a combination of maximum bubble pressure and rotating bob methods

Elizaveta Cheremisina; Oleksandr Kovtun; Anton Yehorov; Olena Volkova; Johannes Schenk

doi:10.1016/j.ceramint.2023.06.266

Properties of liquid CaO–SiO2 and CaO–SiO2-‘Fe2O3’tot slags measured by a combination of maximum bubble pressure and rotating bob methods

Elizaveta Cheremisina, Oleksandr Kovtun, Anton Yehorov, Olena Volkova, Johannes Schenk

Chair of Ferrous Metallurgy (220)

Research output: Contribution to journal › Article › Research › peer-review

Abstract

Liquid slag properties are essential for understanding complex mass and momentum phenomena in metallurgical operations. The density, surface tension and viscosity were measured in six silicate-rich slags of the CaO–SiO2 and CaO–SiO2-‘Fe2O3’tot systems by combining the maximum bubble pressure and rotating bob methods. The properties investigated were sensitive to the temperature, SiO2 and Fe2O3 contents. Different experimental trends were derived due to the amphoteric properties of Fe2O3. The slags with ferric oxide were denser than the silicate melts. Surface tension gradually decreased with temperature and indicated firstly a rise and then decline with further Fe2O3 addition. Raman spectra were analyzed to provide structural information of the polymer melt and indicated an enhancement in the polymerization degree with Fe3+. The derived experimental trends and role of Fe3+ in the silicates were attributed to the interplay of complex factors: different bonding in the melt, cation interactions and the oxidation state of iron. The influence of Fe3+/Fe2+ on the melt properties was discussed.

Previous article in issue

Original language	English
Pages (from-to)	30104-30114
Number of pages	11
Journal	Ceramics International
Volume	49.2023
Issue number	18
Early online date	27 Jun 2023
DOIs	https://doi.org/10.1016/j.ceramint.2023.06.266
Publication status	Published - 27 Jun 2023

Bibliographical note

Funding Information: The authors gratefully acknowledge the funding support of K1-MET GmbH, metallurgical competence center. The research program of the K1-MET competence center is supported by COMET (Competence Center for Excellent Technologies), the Austrian program for competence centers. COMET is funded by the Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation and Technology, the Federal Ministry for Labour and Economy, the Federal States of Upper Austria, Tyrol and Styria as well as the Styrian Business Promotion Agency (SFG) and the Standortagentur Tyrol. Furthermore, Upper Austrian Research continuously supports K1-MET. Beside the public funding from COMET, the research project is partially financed by the scientific partners Montanuniversitaet Leoben and University of Applied Sciences - Upper Austria, and the industrial partners Lhoist Recherche et Développement, Primetals Technologies Austria, RHI Magnesita, voestalpine Stahl and voestalpine Stahl Donawitz. The authors are thankful to the Institute of Iron and Steel Technology, TU Bergakademie Freiberg for the viscosity, density and surface tension measurements and conduction of chemical analysis.

Funding Information:
The authors gratefully acknowledge the funding support of K1-MET GmbH, metallurgical competence center. The research program of the K1-MET competence center is supported by COMET (Competence Center for Excellent Technologies) , the Austrian program for competence centers. COMET is funded by the Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation and Technology , the Federal Ministry for Labour and Economy , the Federal States of Upper Austria , Tyrol and Styria as well as the Styrian Business Promotion Agency (SFG) and the Standortagentur Tyrol. Furthermore, Upper Austrian Research continuously supports K1-MET. Beside the public funding from COMET, the research project is partially financed by the scientific partners Montanuniversitaet Leoben and University of Applied Sciences - Upper Austria , and the industrial partners Lhoist Recherche et Développement, Primetals Technologies Austria, RHI Magnesita, voestalpine Stahl and voestalpine Stahl Donawitz.

Publisher Copyright: © 2023

Keywords

Density
Iron-containing polymer
Surface tension
Viscosity

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10.1016/j.ceramint.2023.06.266

Cite this

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title = "Properties of liquid CaO–SiO2 and CaO–SiO2-{\textquoteleft}Fe2O3{\textquoteright}tot slags measured by a combination of maximum bubble pressure and rotating bob methods",

abstract = "Liquid slag properties are essential for understanding complex mass and momentum phenomena in metallurgical operations. The density, surface tension and viscosity were measured in six silicate-rich slags of the CaO–SiO2 and CaO–SiO2-{\textquoteleft}Fe2O3{\textquoteright}tot systems by combining the maximum bubble pressure and rotating bob methods. The properties investigated were sensitive to the temperature, SiO2 and Fe2O3 contents. Different experimental trends were derived due to the amphoteric properties of Fe2O3. The slags with ferric oxide were denser than the silicate melts. Surface tension gradually decreased with temperature and indicated firstly a rise and then decline with further Fe2O3 addition. Raman spectra were analyzed to provide structural information of the polymer melt and indicated an enhancement in the polymerization degree with Fe3+. The derived experimental trends and role of Fe3+ in the silicates were attributed to the interplay of complex factors: different bonding in the melt, cation interactions and the oxidation state of iron. The influence of Fe3+/Fe2+ on the melt properties was discussed. Previous article in issue",

keywords = "Density, Iron-containing polymer, Surface tension, Viscosity",

author = "Elizaveta Cheremisina and Oleksandr Kovtun and Anton Yehorov and Olena Volkova and Johannes Schenk",

note = "Funding Information: The authors gratefully acknowledge the funding support of K1-MET GmbH, metallurgical competence center. The research program of the K1-MET competence center is supported by COMET (Competence Center for Excellent Technologies), the Austrian program for competence centers. COMET is funded by the Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation and Technology, the Federal Ministry for Labour and Economy, the Federal States of Upper Austria, Tyrol and Styria as well as the Styrian Business Promotion Agency (SFG) and the Standortagentur Tyrol. Furthermore, Upper Austrian Research continuously supports K1-MET. Beside the public funding from COMET, the research project is partially financed by the scientific partners Montanuniversitaet Leoben and University of Applied Sciences - Upper Austria, and the industrial partners Lhoist Recherche et D{\'e}veloppement, Primetals Technologies Austria, RHI Magnesita, voestalpine Stahl and voestalpine Stahl Donawitz. The authors are thankful to the Institute of Iron and Steel Technology, TU Bergakademie Freiberg for the viscosity, density and surface tension measurements and conduction of chemical analysis. Funding Information: The authors gratefully acknowledge the funding support of K1-MET GmbH, metallurgical competence center. The research program of the K1-MET competence center is supported by COMET (Competence Center for Excellent Technologies) , the Austrian program for competence centers. COMET is funded by the Federal Ministry for Climate Action, Environment, Energy, Mobility, Innovation and Technology , the Federal Ministry for Labour and Economy , the Federal States of Upper Austria , Tyrol and Styria as well as the Styrian Business Promotion Agency (SFG) and the Standortagentur Tyrol. Furthermore, Upper Austrian Research continuously supports K1-MET. Beside the public funding from COMET, the research project is partially financed by the scientific partners Montanuniversitaet Leoben and University of Applied Sciences - Upper Austria , and the industrial partners Lhoist Recherche et D{\'e}veloppement, Primetals Technologies Austria, RHI Magnesita, voestalpine Stahl and voestalpine Stahl Donawitz. Publisher Copyright: {\textcopyright} 2023",

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language = "English",

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Properties of liquid CaO–SiO2 and CaO–SiO2-‘Fe2O3’tot slags measured by a combination of maximum bubble pressure and rotating bob methods. / Cheremisina, Elizaveta; Kovtun, Oleksandr; Yehorov, Anton et al.
In: Ceramics International, Vol. 49.2023, No. 18, 27.06.2023, p. 30104-30114.

Research output: Contribution to journal › Article › Research › peer-review

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AU - Kovtun, Oleksandr

AU - Yehorov, Anton

AU - Volkova, Olena

AU - Schenk, Johannes

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PY - 2023/6/27

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N2 - Liquid slag properties are essential for understanding complex mass and momentum phenomena in metallurgical operations. The density, surface tension and viscosity were measured in six silicate-rich slags of the CaO–SiO2 and CaO–SiO2-‘Fe2O3’tot systems by combining the maximum bubble pressure and rotating bob methods. The properties investigated were sensitive to the temperature, SiO2 and Fe2O3 contents. Different experimental trends were derived due to the amphoteric properties of Fe2O3. The slags with ferric oxide were denser than the silicate melts. Surface tension gradually decreased with temperature and indicated firstly a rise and then decline with further Fe2O3 addition. Raman spectra were analyzed to provide structural information of the polymer melt and indicated an enhancement in the polymerization degree with Fe3+. The derived experimental trends and role of Fe3+ in the silicates were attributed to the interplay of complex factors: different bonding in the melt, cation interactions and the oxidation state of iron. The influence of Fe3+/Fe2+ on the melt properties was discussed. Previous article in issue

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KW - Density

KW - Iron-containing polymer

KW - Surface tension

KW - Viscosity

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ER -

Properties of liquid CaO–SiO2 and CaO–SiO2-‘Fe2O3’tot slags measured by a combination of maximum bubble pressure and rotating bob methods

Abstract

Bibliographical note

Keywords

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