Recovering rare earth metals from magnet scrap
Abstract
A method is provided for treating a rare earth metal-bearing scrap material by melting an extractant selected from the group consisting of bismuth (Bi) and lead (Pb) and contacting the melted extractant and the scrap material at a temperature and time to recover at least one of the light rare earth metal content and the heavy rare earth metal content as a metallic extractant alloy, which can be subjected to vacuum distillation or sublimation to recover the rare earth metal(s). The method can be practiced to recover the light rare earth metal content and the heavy rare earth metal content concurrently in a one-step process or separately and sequentially in a two-step process.
- Inventors:
- Issue Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1568482
- Patent Number(s):
- 10323299
- Application Number:
- 14/999,802
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
- DOE Contract Number:
- AC02-07CH11358
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 06/28/2016
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Ott, Ryan T., and McCallum, Ralph W. Recovering rare earth metals from magnet scrap. United States: N. p., 2019.
Web.
Ott, Ryan T., & McCallum, Ralph W. Recovering rare earth metals from magnet scrap. United States.
Ott, Ryan T., and McCallum, Ralph W. Tue .
"Recovering rare earth metals from magnet scrap". United States. https://www.osti.gov/servlets/purl/1568482.
@article{osti_1568482,
title = {Recovering rare earth metals from magnet scrap},
author = {Ott, Ryan T. and McCallum, Ralph W.},
abstractNote = {A method is provided for treating a rare earth metal-bearing scrap material by melting an extractant selected from the group consisting of bismuth (Bi) and lead (Pb) and contacting the melted extractant and the scrap material at a temperature and time to recover at least one of the light rare earth metal content and the heavy rare earth metal content as a metallic extractant alloy, which can be subjected to vacuum distillation or sublimation to recover the rare earth metal(s). The method can be practiced to recover the light rare earth metal content and the heavy rare earth metal content concurrently in a one-step process or separately and sequentially in a two-step process.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jun 18 00:00:00 EDT 2019},
month = {Tue Jun 18 00:00:00 EDT 2019}
}
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