| About this Abstract |
| Meeting |
Liquid Metal Processing & Casting Conference (LMPC 2022)
|
| Symposium
|
Liquid Metal Processing & Casting Conference (LMPC 2022)
|
| Presentation Title |
Dissolution of Al2O3, MgO·Al2O3 and SiO2 in Alkali Oxide Containing Secondary Metallurgical Slags |
| Author(s) |
Nikolaus Preisser, Julian Cejka, Shashank Ramesh Babu, Gerald Klösch, Susanne K. Michelic |
| On-Site Speaker (Planned) |
Julian Cejka |
| Abstract Scope |
The control of non-metallic inclusions is inevitable for the quality of cleanness sensitive steels. As alkali oxides have already been used in mould 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 by means of High-Temperature Laser Scanning Confocal Microscopy. This method enables the in-situ observation of inclusion behaviour at steelmaking temperatures. Thermodynamic calculations using FactSage are additionally applied. In the experiments, Al2O3, MgO∙Al2O3 and SiO2 particles are in interaction 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. Special focus is put on the influence of slag viscosity on the dissolution behaviour. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |