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Separating rare earth metal oxalates

Patent ·
OSTI ID:1840349
A method is provided for separating and/or purifying different metal oxalates by mixing the different metal oxalates in an aqueous solution comprising oxalic acid and an organic base so that at least one metal oxalate is soluble and at least another metal oxalate is not soluble. Different rare earth metal oxalates and/or transition metal oxalates can be separated.
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):
11,090,579
Application Number:
16/350,841
OSTI ID:
1840349
Country of Publication:
United States
Language:
English

References (5)

A review of the beneficiation of rare earth element bearing minerals journal February 2013
Separating Rare Earth Elements journal September 2000
Extraction and separation of rare earth elements from hydrothermal metalliferous sediments journal March 2018
Hydrometallurgy of Strategic Metals journal July 2000
Rare earth separation in China journal April 2006

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