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Methods of recovering an elemental rare earth metal, and methods of forming a rare earth metal

Patent ·
OSTI ID:2293726
; ;
A method of recovering an elemental rare earth metal comprises placing a rare earth-containing material comprising a rare earth metal in a reaction solution comprising a reducing agent and a non-aqueous solvent comprising an ionic liquid or a eutectic mixture, reducing the rare earth metal with the reducing agent to form a metallic rare earth metal and cations of the reducing agent, transferring the cations of the reducing agent from the reaction solution to an electrochemical cell through an ion exchange membrane, and reducing the cations of the reducing agent in the electrochemical cell. Related methods of forming an elemental rare earth metal, and related systems are disclosed.
Research Organization:
Idaho National Laboratory (INL), Idaho Falls, ID (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC07-05ID14517
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID)
Patent Number(s):
11,788,171
Application Number:
17/249,283
OSTI ID:
2293726
Country of Publication:
United States
Language:
English

References (11)

Li-ion batteries: basics, progress, and challenges journal September 2015
Commercial production of rare earth metals by fused salt electrolysis journal March 1968
Production of Pure Rare Earth Metals journal March 1952
Electrodeposition of Rare Earth Metal in Ionic Liquids book January 2016
Production of rare earth metals in quantity allows testing of physical properties journal May 1954
Electroplating Dysprosium from IL-Based Solutions: A Promising Electrochemical Step to Produce Stronger High Performance Nd(Dy)-Fe-B Sintered Magnets journal January 2015
Neodymium Production Processes journal February 1987
Alkali Metal Reductions of Organic Molecules: Why Mediated Electron Transfer from Lithium Is Faster than Direct Reduction journal August 2008
Electrodeposition of rare earth metals Y, Gd, Yb in ionic liquids journal December 2009
The Preparation of Rare Earth Metals journal June 1952
Oxide reduction processes in the preparation of rare-earth metals journal February 2013

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