SEPARATION PROCESS FOR THORIUM SALTS
Abstract
A process is described for the separation of uranium, thorium, and rare earths extracted from monazite by digesting with sulfuric acid. By carefully increasing the pH of the solution, stepwise, over the range 0.8 to 5.5, a series of selective precipitations will be achieved, with the thorium values coming out at lower pH, the rare earths at intermediate pH and the uranium last. Some mixed precipitates will be obtained, and these may be treated by dissolving in HNO/sub 3/ and contacting with dibutyl phosphate, whereby thorium or uranium are taken up by the organic phase while the rare earths preferentially remain in the aqueous solution.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 4307734
- Patent Number(s):
- 2815262
- Assignee:
- U.S. Atomic Energy Commission
- Patent Classifications (CPCs):
-
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- NSA Number:
- NSA-12-006989
- Resource Type:
- Patent
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-58
- Country of Publication:
- United States
- Language:
- English
- Subject:
- PATENTS; BUTYL PHOSPHATES; MONAZITES; NITRIC ACID; PATENT; PRECIPITATION; RARE EARTHS; SALTS; SEPARATION PROCESSES; SOLUTIONS; SULFURIC ACID; THORIUM; URANIUM; WATER
Citation Formats
Bridger, G L, Whatley, M E, and Shaw, K G. SEPARATION PROCESS FOR THORIUM SALTS. United States: N. p., 1957.
Web.
Bridger, G L, Whatley, M E, & Shaw, K G. SEPARATION PROCESS FOR THORIUM SALTS. United States.
Bridger, G L, Whatley, M E, and Shaw, K G. Sun .
"SEPARATION PROCESS FOR THORIUM SALTS". United States.
@article{osti_4307734,
title = {SEPARATION PROCESS FOR THORIUM SALTS},
author = {Bridger, G L and Whatley, M E and Shaw, K G},
abstractNote = {A process is described for the separation of uranium, thorium, and rare earths extracted from monazite by digesting with sulfuric acid. By carefully increasing the pH of the solution, stepwise, over the range 0.8 to 5.5, a series of selective precipitations will be achieved, with the thorium values coming out at lower pH, the rare earths at intermediate pH and the uranium last. Some mixed precipitates will be obtained, and these may be treated by dissolving in HNO/sub 3/ and contacting with dibutyl phosphate, whereby thorium or uranium are taken up by the organic phase while the rare earths preferentially remain in the aqueous solution.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1957},
month = {12}
}
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