PROCESS FOR SEPARATING IONS BY ION EXCHANGE
Patent
·
OSTI ID:4828900
A process is outlined for separating rare earths and yttrium from each other by pseudocountercurrent ion exchange. The process comprises nearly saturating (80 to 95% of capacity) a cation exchange resin bed with the rare earth mixture, eluting the resin with a solution of a complexing agent, and collecting separately successive fractions. The resin bed is preferably a sulfonated polystyrene-divinylbenzene copolymer with 4% crosslinkage and has a height of 3 to 4 ft for a --100 + 200 mesh resin or 8 to 12 ft for a-50 + 100 mesh resin. The complexing agent may be ethylenediamine tetraacetic acid or a salt thereof. Several examples of the process are given. (D.L.C.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-020554
- Assignee:
- DTIE; NSA-16-020554
- Patent Number(s):
- US 3037841
- OSTI ID:
- 4828900
- Country of Publication:
- United States
- Language:
- English
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