About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Stabilizing Effect of Particles in Slag Foaming Relevant to Smelting-Based Battery Recycling |
| Author(s) |
Bas Dobbelaere, Ryohei Yagi, Akbar Rhamdhani, Geoffrey Brooks |
| On-Site Speaker (Planned) |
Bas Dobbelaere |
| Abstract Scope |
Slag foaming remains an active research area in high temperature processing due to its significant impact on process efficiency. However, fundamental understanding of slag foaming, especially in the context of smelting-based battery recycling, is still limited. One important factor is the formation of solid particles, as a direct consequence of sub liquidus operation and endothermic reduction reactions. These particles are known to strongly stabilize slag foams. However, the influence of precipitation-prone conditions on foam formation has not yet been thoroughly investigated. In this study, the effect of endothermic reduction on slag foaming was examined through a series of experiments conducted at 1350 to 1500 °C using an Al2O3-CaO-Fe2O3-SiO2 slag system. The results show that the presence of particles significantly increases foam height, with the Kaptay Factor indicating heights up to 1.75 times greater than those predicted by conventional foam index-viscosity models. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Pyrometallurgy, Extraction and Processing, Recycling and Secondary Recovery |