| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina & Bauxite
|
| Presentation Title |
Turning Bauxite Residue to Metal Adsorption Materials through a Low-cost Approach |
| Author(s) |
Hong (Marco) Peng, James Vaughan, Shengchun Ma, Sicheng Wang, Xinyu Tian |
| On-Site Speaker (Planned) |
Hong (Marco) Peng |
| Abstract Scope |
A low-cost approach to bauxite residue (BR) utilization has not been achieved due to the complicated mineralogy. In this study, BR has been treated by dilute acid to reduce the alkalinity of residue by dissolving sodalite phase. The acid washed BR samples are of high iron grade (>80% Fe2O3) with low sodium content (<0.3% Na2O) which can be potentially used as ironmaking feed. The washed acid solution was treated by caustic NaOH to synthesise the zeolite-like adsorption materials. The materials have been used for adsorption of copper and lithium metal salts. The Cu adsorption performance of the synthesised product shows the exhibits fast loading kinetics as within 15 min over 99% of adsorption efficiency is observed, compared with commercial grade zeolite LTA. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Recycling and Secondary Recovery, Phase Transformations, Aluminum |