DISSOLUTION OF LANTHANUM FLUORIDE PRECIPITATES
Abstract
A plutonium separatory ore concentration procedure involving the use of a fluoride type of carrier is presented. An improvement is given in the derivation step in the process for plutonium recovery by carrier precipitation of plutonium values from solution with a lanthanum fluoride carrier precipitate and subsequent derivation from the resulting plutonium bearing carrier precipitate of an aqueous acidic plutonium-containing solution. The carrier precipitate is contacted with a concentrated aqueous solution of potassium carbonate to effect dissolution therein of at least a part of the precipitate, including the plutonium values. Any remaining precipitate is separated from the resulting solution and dissolves in an aqueous solution containing at least 20% by weight of potassium carbonate. The reacting solutions are combined, and an alkali metal hydroxide added to a concentration of at least 2N to precipitate lanthanum hydroxide concomitantly carrying plutonium values.
- Inventors:
- Issue Date:
- Research Org.:
- Originating Research Org. not identified
- OSTI Identifier:
- 4187134
- Patent Number(s):
- 2912303
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- NSA Number:
- NSA-14-007472
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-60
- Country of Publication:
- United States
- Language:
- English
- Subject:
- CHEMISTRY; ALKALI METALS; HYDROXIDES; LANTHANUM FLUORIDES; ORE PROCESSING; PLUTONIUM; POTASSIUM CARBONATES; PRECIPITATION; RECOVERY; SOLUBILITY; SOLUTIONS; WATER
Citation Formats
Fries, B A. DISSOLUTION OF LANTHANUM FLUORIDE PRECIPITATES. United States: N. p., 1959.
Web.
Fries, B A. DISSOLUTION OF LANTHANUM FLUORIDE PRECIPITATES. United States.
Fries, B A. Tue .
"DISSOLUTION OF LANTHANUM FLUORIDE PRECIPITATES". United States.
@article{osti_4187134,
title = {DISSOLUTION OF LANTHANUM FLUORIDE PRECIPITATES},
author = {Fries, B A},
abstractNote = {A plutonium separatory ore concentration procedure involving the use of a fluoride type of carrier is presented. An improvement is given in the derivation step in the process for plutonium recovery by carrier precipitation of plutonium values from solution with a lanthanum fluoride carrier precipitate and subsequent derivation from the resulting plutonium bearing carrier precipitate of an aqueous acidic plutonium-containing solution. The carrier precipitate is contacted with a concentrated aqueous solution of potassium carbonate to effect dissolution therein of at least a part of the precipitate, including the plutonium values. Any remaining precipitate is separated from the resulting solution and dissolves in an aqueous solution containing at least 20% by weight of potassium carbonate. The reacting solutions are combined, and an alkali metal hydroxide added to a concentration of at least 2N to precipitate lanthanum hydroxide concomitantly carrying plutonium values.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 10 00:00:00 EST 1959},
month = {Tue Nov 10 00:00:00 EST 1959}
}