| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Bauxite Residue Valorization and Best Practices
|
| Presentation Title |
Pelletization and Hydrogen Reduction of Bauxite Residue in Pilot Scale |
| Author(s) |
Casper Van Der Eijk, Arijit Biswas, Frida Vollan |
| On-Site Speaker (Planned) |
Casper Van Der Eijk |
| Abstract Scope |
This work is about the experience gained from the extraction of iron metal from bauxite residue pellets through hydrogen reduction. The pelletizing method was developed in laboratory-scale with the help of a small Eirich mixer (EL1). The production of 2 000 kg calcium-added bauxite-residue pellets with the requisite chemical composition has been performed in a large Eirich Mixture (Type R08W). The pellets were subjected to various tests like tumbler and abrasion tests.
The pellets have been reduced in a hydrogen atmosphere in lab-scale, with a focus on fine-tuning reduction characteristics through the variation of parameters such as reduction time, temperature, and gas flows in a thermogravimetric apparatus. After characterisation of the reduced pellets, the optimal parameters for reduction were established. The hydrogen reduction was demonstrated in a rotary furnace with a capacity of about 500 kg. |
| Proceedings Inclusion? |
Planned: TMS Journal: Journal of Sustainable Metallurgy |
| Keywords |
Aluminum, Recycling and Secondary Recovery, Pyrometallurgy |