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Title: METHOD OF SEPARATING RARE EARTHS BY ION EXCHANGE

Abstract

A process is given for separating yttrium and rare earth values having atomic numbers of from 57 through 60 and 68 through 71 from an aqueous solution whose pH value can range from 1 to 9. All rare earths and yttrium are first adsorbed on a cation exchange resin, and they are then eluted with a solution of N-hydroxyethylethylenediaminetriacetic acid (HEDTA) in the order of decreasing atomic number, yttrium behaving like element 61; the effluents are collected in fractions. The HEDTA is recovered by elution with ammonia solution and the resin is regenerated with sulfuric acid. Rare earths are precipitated from the various effluents with oxalic acid, and each supernatant is passed over cation exchange resin for adsorption of HEDTA and nonprecipitated rare earths: the oxalic acid is not retained by the resin.

Inventors:
;
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4117701
Patent Number(s):
2956858
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-15-007438
NSA Number:
NSA-15-007438
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-61
Country of Publication:
United States
Language:
English
Subject:
CHEMISTRY; ACIDITY; ADSORPTION; AMMONIA; CATIONS; CHELATES; ELUTION; HEDTA; ION EXCHANGE; OXALIC ACID; PRECIPITATION; RARE EARTHS; RECOVERY; RESINS; SEPARATION PROCESSES; SOLUTIONS; SULFURIC ACID; WATER; YTTRIUM

Citation Formats

Spedding, F.H., and Powell, J.E. METHOD OF SEPARATING RARE EARTHS BY ION EXCHANGE. United States: N. p., 1960. Web.
Spedding, F.H., & Powell, J.E. METHOD OF SEPARATING RARE EARTHS BY ION EXCHANGE. United States.
Spedding, F.H., and Powell, J.E. Tue . "METHOD OF SEPARATING RARE EARTHS BY ION EXCHANGE". United States.
@article{osti_4117701,
title = {METHOD OF SEPARATING RARE EARTHS BY ION EXCHANGE},
author = {Spedding, F.H. and Powell, J.E.},
abstractNote = {A process is given for separating yttrium and rare earth values having atomic numbers of from 57 through 60 and 68 through 71 from an aqueous solution whose pH value can range from 1 to 9. All rare earths and yttrium are first adsorbed on a cation exchange resin, and they are then eluted with a solution of N-hydroxyethylethylenediaminetriacetic acid (HEDTA) in the order of decreasing atomic number, yttrium behaving like element 61; the effluents are collected in fractions. The HEDTA is recovered by elution with ammonia solution and the resin is regenerated with sulfuric acid. Rare earths are precipitated from the various effluents with oxalic acid, and each supernatant is passed over cation exchange resin for adsorption of HEDTA and nonprecipitated rare earths: the oxalic acid is not retained by the resin.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1960},
month = {10}
}