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Title: 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:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4307734
Patent Number(s):
2815262
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-12-006989
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}
}