Dissolution of Al2O3, MgO●Al2O3, and SiO2 in alkali oxide containing secondary metallurgical slags
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Proceedings of the Liquid Metal Processing & Casting Conference 2022. Philadelphia, Pennsylvania, USA, 2022. S. 87.
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TY - GEN
T1 - Dissolution of Al2O3, MgO●Al2O3, and SiO2 in alkali oxide containing secondary metallurgical slags
AU - Preißer, Nikolaus
AU - Cejka, Julian
AU - Ramesh Babu, Shashank
AU - Klösch, Gerald
AU - Michelic, Susanne Katharina
PY - 2022
Y1 - 2022
N2 - The control of non-metallic inclusions is inevitable for the quality of cleanness-sensitive steels. As alkali oxides have already been used in mold fluxes to achieve lower melting temperatures, it is suggested that there could be a positive effect on the inclusion removal in secondary metallurgical slags. In this work, the dissolution of synthetic particles in multiple alkali oxide containing slags is studied on a laboratory scale using High-Temperature Confocal Scanning Laser Microscopy. This method enables the in-situ observation of inclusion behavior at steelmaking temperatures. Thermodynamic calculations using FactSage are additionally applied. In the experiments, Al2O3, MgO∙Al2O3 and SiO2 particles interact with slags containing different amounts of Li2O, Na2O and K2O. Significant differences in dissolution time for the specific particle types are observed. Moreover, the dissolution mechanisms are investigated.
AB - The control of non-metallic inclusions is inevitable for the quality of cleanness-sensitive steels. As alkali oxides have already been used in mold fluxes to achieve lower melting temperatures, it is suggested that there could be a positive effect on the inclusion removal in secondary metallurgical slags. In this work, the dissolution of synthetic particles in multiple alkali oxide containing slags is studied on a laboratory scale using High-Temperature Confocal Scanning Laser Microscopy. This method enables the in-situ observation of inclusion behavior at steelmaking temperatures. Thermodynamic calculations using FactSage are additionally applied. In the experiments, Al2O3, MgO∙Al2O3 and SiO2 particles interact with slags containing different amounts of Li2O, Na2O and K2O. Significant differences in dissolution time for the specific particle types are observed. Moreover, the dissolution mechanisms are investigated.
M3 - Conference contribution
SN - 0-87339-772-X
SP - 87
BT - Proceedings of the Liquid Metal Processing & Casting Conference 2022
CY - Philadelphia, Pennsylvania, USA
T2 - Liquid Metal Processing & Casting Conference 2022
Y2 - 18 September 2022 through 21 September 2022
ER -
