Dissolution and separation of rare earth metals
Patent
·
OSTI ID:1650890
A chemical dissolution method is provided for use in recycling rare earth metal-containing material such as permanent magnet material including end-of-life magnet shapes, magnet scrap and Terfenol-D alloy material by mixing the rare earth metal-containing material and an aqueous solution of a copper (II) salt to dissolve the material in the solution. The dissolved rare earth metal is then precipitated from the aqueous solution as a rare earth metal compound, such as a rare earth metal oxalate, sulfate or phosphate from which rare earth metal oxide can be obtained.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-07CH11358
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Number(s):
- 10,648,063
- Application Number:
- 15/998,079
- OSTI ID:
- 1650890
- Country of Publication:
- United States
- Language:
- English
Similar Records
Complexometric titration of rare earth elements. Dissolution of the rare earth oxalate with ethylenediaminetetraacetic acid and back titration with magnesium sulfate
Recycling of neodymium iron boron magnet scrap. Report of Investigations/1993
Separating rare earth metal oxalates
Journal Article
·
Sat Aug 01 00:00:00 EDT 1959
· Bull. Chem. Soc. Japan
·
OSTI ID:4200576
Recycling of neodymium iron boron magnet scrap. Report of Investigations/1993
Technical Report
·
Thu Dec 31 23:00:00 EST 1992
·
OSTI ID:5525319
Separating rare earth metal oxalates
Patent
·
Tue Aug 17 00:00:00 EDT 2021
·
OSTI ID:1840349