| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bauxite Residue Valorization and Best Practices
|
| Presentation Title |
Processing routes of Bauxite Residue and its Valorisation Potential: Various case studies demonstrated at pilot scale |
| Author(s) |
Glenn Beersaerts, Ganesh Pilla, Michiel Giels, Tobias Hertel, Yiannis Pontikes |
| On-Site Speaker (Planned) |
Glenn Beersaerts |
| Abstract Scope |
Bauxite residue (BR) is a by-product from the alumina industry and could be an interesting raw material for metal recovery and the construction industry. Despite its potential, only 1-3% of BR is used as a minor constituent for clinkering. In order to upcycle BR, a hydrothermal (200°C) or high-temperature process (>600°C) is required. The former comprises autoclaving of pressed monoliths, while the latter comprises roasting through hydrogen reduction for metal recovery and vitrification to obtain a supplementary cementitious material. These processes were developed at lab scale, but not yet validated at pilot scale. However, it is essential to demonstrate that these processes are scalable and consistent. Several processing lines for BR treatment were developed such as homogenization, pelletization, pressing, heat treatment, granulation and milling. Several experimental campaigns are presented for each processing route and the suitability to recover metaloxides and to obtain construction products is tested. |
| Proceedings Inclusion? |
Planned: TMS Journal: Journal of Sustainable Metallurgy |
| Keywords |
Process Technology, Pyrometallurgy, Sustainability |