| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Process Metallurgy and Electrochemistry of Molten Salts, Liquid Metal Batteries, and Extra-terrestrial Materials Processing: An EPD Symposium in Honor of Don Sadoway
|
| Presentation Title |
Recovery of Metal Values from Wastes |
| Author(s) |
Aida Abbasalizadeh, Rajiv Shekhar, Seshadri Seetharaman |
| On-Site Speaker (Planned) |
Seshadri Seetharaman |
| Abstract Scope |
A process for the extraction of metal values from metallurgical slags, glass phases as well as magnet scrap containing RE metals by molten salt extraction and electrolysis has been developed at the Royal Institute of Technology, Stockholm and TU Delft, Netherlands. The electrolyte is either molten alkali chlorides or fluorides. In the case of chloride melts, AlCl3 was used as the chlorodizing agent while, in the case of fluorides, FeF3 was found to be most efficient fluoridizer. In both cases, the novelty of the processes is the use of sacrificial anodes, liquid aluminium in the case of chloride melts and solid iron in the case of fluorides, enabling the in situ formation of the fluxes in necessary and sufficient amounts avoiding the emission of halogens during electrolysis. Suitable cell-designs are being developed for up-scaling the process. The potentialities of the salt extraction process for further developments are discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |