About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology
|
| Presentation Title |
Electrorefining of highly alloyed scrap to primary metal |
| Author(s) |
Ole S. Kjos, Camilla Sommerseth, Cathrine Kyung Won Solem, Asbjørn Solheim, Henrik Gudbrandsen |
| On-Site Speaker (Planned) |
Ole S. Kjos |
| Abstract Scope |
The strong incentives to increase the total share of recycled aluminium in new products creates challenges in the remelting chain to maintain control of alloying elements in the final products. Efficient and improved sorting of scrap has enabled good utilization of scrap from various sources; however, the sorting also yields a significant stream of scrap with alloy contents not suitable for remelting. Today this scrap is discarded, but it should rather be purified and used in remelting. The principles of the Hoopes cell for producing high purity aluminium was adapted in a laboratory cell with completely new geometry and optimized for high throughput and a purity like primary aluminium metal. 99.5 % pure Al was achieved from highly alloyed scrap sources with less than 5 kWh/kg energy usage and no CO<sub>2</sub> emissions. The process can remove any alloying elements. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Recycling and Secondary Recovery, Extraction and Processing |