Neodymium extraction using salt extraction process
2015 (English)In: Transactions of the Institution of Mining and Metallurgy Section C - Mineral Processing and Extractive Metallurgy, ISSN 0371-9553, E-ISSN 1743-2855, Vol. 124, no 4, 191-198 p.Article in journal (Refereed) PublishedText
The present paper deals with the feasibility of the neodymium recovery from spent Nd-Fe-B magnets using molten salt electrodeposition method. The salt bath consisted of a mixture of LiCl- KCl-NaCl corresponding to the eutectic composition. The experimental set-up with its salient features is presented. AlCl3 was used as flux and graphite rods dipped in the salt bath served as electrodes. The voltage for the electrolysis was chosen on the basis of the decomposition potential of NdCl3. The reaction sequence can be described as Iron-free neodymium deposition could be carried out successfully. In view of the proximity of the electrode potentials, the co-deposition of the aluminium and neodymium was observed to occur at the cathode, as revealed by SEM/EDS and XRD analyses of the electrodeposit.
Place, publisher, year, edition, pages
Maney Publishing, 2015. Vol. 124, no 4, 191-198 p.
Aluminium chloride, Electrodeposition, Molten salt, Neodymium
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-181834DOI: 10.1179/1743285514Y.0000000062ScopusID: 2-s2.0-84950321140OAI: oai:DiVA.org:kth-181834DiVA: diva2:902413
QC 201602112016-02-112016-02-052016-02-11Bibliographically approved