|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||A Laboratory Study of Electrochemical Removal of Noble Elements from Secondary Aluminium
||Ole S. Kjos, Sverre Rolseth, Henrik Gudbrandsen, Egil Skybakmoen, Asbjørn Solheim, Trond H. Bergstrøm
|On-Site Speaker (Planned)
||Ole S. Kjos
At present, recycled aluminium is "diluted" by primary metal to keep the impurity concentrations at acceptable levels. Future increase in recycling will require a new process for efficient removal of all impurities, including noble elements, from secondary aluminium. In the current preliminary laboratory study, an electrochemical method based on the well-known three-layer refining cell was explored. Metal with purity comparable to primary metal could be obtained from highly alloyed scrap feeds containing elements more noble than aluminium, such as iron, copper, manganese, and zinc. The energy consumption was considerably lower than the energy needed for production of primary aluminium, indicating that the process can be expected to be less expensive than for production of primary metal, but with higher costs than re-melting.
||Planned: A CD-only volume