| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Alumina and Bauxite
|
| Presentation Title |
Pathways to Decarbonise the Alumina Industry |
| Author(s) |
Jordan Parham, Graham Nathan, Woei Saw, Peter Ashman |
| On-Site Speaker (Planned) |
Graham Nathan |
| Abstract Scope |
The Heavy Industry Low-carbon Transition Co-operative Research Centre (HILT CRC) is addressing the need to de-risk relatively high TRL technologies that can be incorporated as a retro-fit to reduce emissions from current alumina refineries and advance novel technologies needed to unlock a step-change in increased efficiency and reduced cost in next generation alumina refineries.
HILT’s projects are focussing on electrification of calcination process and recovery of waste heat from calcination to the Bayer process to achieve these aims. The results of these projects including a study technical and economic feasibility of retrofitting an alumina calcination process using hydrogen (H2) or electrification to enable steam recovery. This evaluation demonstrated both pathways can provide approximately 30-40% of the steam required for the digestion process, leading to a substantial energy savings of 20-30% compared with the existing steam production with natural gas boilers. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Process Technology, Sustainability, Other |