Recovering heavy rare earth metals from magnet scrap
US9725788B2 · kind B2 · utility
1Cited by
4References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Feb 14, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of treating rare earth metal-bearing permanent magnet scrap, waste or other material in a manner to recover the heavy rare earth metal content separately from the light rare earth metal content. The heavy rare earth metal content can be recovered either as a heavy rare earth metal-enriched iron based alloy or as a heavy rare earth metal based alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.