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A Laboratory Study of Electrochemical Removal of Noble Elements from Secondary Aluminium

A Laboratory Study of Electrochemical Removal of Noble Elements from Secondary Aluminium

Kategori
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Sammendrag
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 as low as 8.5 kWh/kg Al, indicating that the process can be expected to be less expensive than for production of primary metal, but with higher costs than re-melting.
Språk
Engelsk
Forfatter(e)
Institusjon(er)
  • SINTEF Industri / Metallproduksjon og prosessering
  • SINTEF Industri / Prosessteknologi
År
2016
Forlag
John Wiley & Sons
Bok
Rewas 2016: Towards Materials Resource Sustainability
ISBN
9781119225812