| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
Dissolution of calcium aluminate inclusions in CaO-SiO2-Al2O3 steelmaking slags: an in-situ and modelling study |
| Author(s) |
Guang Wang, André Phillion, Muhammad Nabeel, Wangzhong Mu, Neslihan Dogan |
| On-Site Speaker (Planned) |
Guang Wang |
| Abstract Scope |
The dissolution mechanism of CaO·2Al2O3 (CA2) particles in CaO-SiO2-Al2O3 types steelmaking slags was in-situ investigated. It is found that the dissolution of CA2 particles was controlled by mass transfer of AlO anion in the slag phase. Furthermore, a numerical model, based on mass transfer control, was developed to estimate the dissolution time of CA2 by incorporating key parameters such as the particle velocity, size and porosity, and slag viscosity and density. The model prediction of the dissolution time was validated against the obtained experimental results and showed a good agreement. The dissolution time of CA2 particles predicted by the model in three different slags at 1600°C is 606, 347, and 123 s, respectively, while the experiment measurements are 612, 321 and 124 s respectively, showing good agreement. This paper will also discuss the effect of key parameters and the presence of solid layer on the model prediction. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Pyrometallurgy, |