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An Ex-ante LCA Study of Rare Earth Extraction from NdFeB Magnet Scrap Using Molten Salt Electrolysis

Schulze, R. ; Abbasalizadeh, Aida ; Bulach, Winfried ; Schebek, Liselotte ; Buchert, M. (2018)
An Ex-ante LCA Study of Rare Earth Extraction from NdFeB Magnet Scrap Using Molten Salt Electrolysis.
In: Journal of Sustainable Metallurgy, 4
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

A new recycling process for the extraction of rare earths from neodymium–iron–boron (NdFeB) magnet scrap is being developed, based on the direct extraction of rare earths from end-of-life magnet material in a molten fluoride electrolysis bath. Rare earths are required in their metallic form for the production of new NdFeB magnets, and the suggested process achieves this through a single step. The process is being developed on a laboratory scale and has been proven to work in principle. It is expected to be environmentally beneficial when compared to longer processing routes. Conducting life cycle assessment at R&D stage can provide valuable information to help steer process development into an environmentally favorable direction. We conducted a life cycle assessment study to provide a quantitative estimate of the impacts associated with the process being developed and to compare the prospective impacts against those of the current state-of-the-art technology. The comparison of this recycling route with primary production shows that the recycling process has the potential for much lower process-specific impacts when compared against the current rare earth primary production route. The study also highlights that perfluorocarbon emissions, which occur during primary rare earth production, warrant further investigation.

Typ des Eintrags: Artikel
Erschienen: 2018
Autor(en): Schulze, R. ; Abbasalizadeh, Aida ; Bulach, Winfried ; Schebek, Liselotte ; Buchert, M.
Art des Eintrags: Bibliographie
Titel: An Ex-ante LCA Study of Rare Earth Extraction from NdFeB Magnet Scrap Using Molten Salt Electrolysis
Sprache: Englisch
Publikationsjahr: 7 November 2018
Verlag: Springer
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of Sustainable Metallurgy
Jahrgang/Volume einer Zeitschrift: 4
URL / URN: https://link.springer.com/article/10.1007%2Fs40831-018-0198-...
Kurzbeschreibung (Abstract):

A new recycling process for the extraction of rare earths from neodymium–iron–boron (NdFeB) magnet scrap is being developed, based on the direct extraction of rare earths from end-of-life magnet material in a molten fluoride electrolysis bath. Rare earths are required in their metallic form for the production of new NdFeB magnets, and the suggested process achieves this through a single step. The process is being developed on a laboratory scale and has been proven to work in principle. It is expected to be environmentally beneficial when compared to longer processing routes. Conducting life cycle assessment at R&D stage can provide valuable information to help steer process development into an environmentally favorable direction. We conducted a life cycle assessment study to provide a quantitative estimate of the impacts associated with the process being developed and to compare the prospective impacts against those of the current state-of-the-art technology. The comparison of this recycling route with primary production shows that the recycling process has the potential for much lower process-specific impacts when compared against the current rare earth primary production route. The study also highlights that perfluorocarbon emissions, which occur during primary rare earth production, warrant further investigation.

Schlagworte:
Einzelne SchlagworteSprache
Rare earths, Molten salt, electrolysis, Molten fluorides, Recycling, Ex-ante LCA, Perfluorocarbon (PFC) emissionsEnglisch
Fachbereich(e)/-gebiet(e): 13 Fachbereich Bau- und Umweltingenieurwissenschaften
13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut IWAR - Wasser- und Abfalltechnik, Umwelt- und Raumplanung
13 Fachbereich Bau- und Umweltingenieurwissenschaften > Institut IWAR - Wasser- und Abfalltechnik, Umwelt- und Raumplanung > Fachgebiet Stoffstrommanagement und Ressourcenwirtschaft
Hinterlegungsdatum: 29 Jan 2019 09:39
Letzte Änderung: 29 Jan 2019 09:39
PPN:
Schlagworte:
Einzelne SchlagworteSprache
Rare earths, Molten salt, electrolysis, Molten fluorides, Recycling, Ex-ante LCA, Perfluorocarbon (PFC) emissionsEnglisch
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