- Tytuł:
- Phase Evolution During Extraction and Recovery of Pure Nd from Magnet
- Autorzy:
-
Rasheed, Mohammad Zarar
Nam, Sun-Woo
Lee, Sang-Hoon
Park, Sang-Min
Cho, Ju-Young
Kim, Taek-Soo - Powiązania:
- https://bibliotekanauki.pl/articles/2048880.pdf
- Data publikacji:
- 2021
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
Liquid Metal Extraction
rare earth recycling
vacuum distillation
phase transformation - Opis:
- Liquid Metal Extraction process using molten Mg was carried out to obtain Nd-Mg alloys from Nd based permanent magnets at 900°C for 24 h. with a magnet to magnesium mass ratio of 1:10. Nd was successfully extracted from magnet into Mg resulting in ~4 wt.% Nd-Mg alloy. Nd was recovered from the obtained Nd-Mg alloys based on the difference in their vapor pressures using vacuum distillation. Vacuum distillation experiments were carried out at 800°C under vacuum of 2.67 Pa at various times for the recovery of high purity Nd. Nd having a purity of more than 99% was recovered at distillation time of 120 min and above. The phase transformations of the Nd-Mg alloy during the process, from Mg12Nd to α-Nd, were confirmed as per the phase diagram at different distillation times. Pure Nd was recovered as a result of two step recycling process; Liquid Metal Extraction followed by Vacuum Distillation.
- Źródło:
-
Archives of Metallurgy and Materials; 2021, 66, 4; 1001-1005
1733-3490 - Pojawia się w:
- Archives of Metallurgy and Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł