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Title: SOLVENT EXTRACTION PROCESS

Abstract

In improved solvent extraction process is described for the extraction of metal values from highly dilute aqueous solutions. The process comprises contacting an aqueous solution with an organic substantially water-immiscible solvent, whereby metal values are taken up by a solvent extract phase; scrubbing the solvent extract phase with an aqueous scrubbing solution; separating an aqueous solution from the scrubbed solvent extract phase; and contacting the scrubbed solvent phase with an aqueous medium whereby the extracted metal values are removed from the solvent phase and taken up by said medium to form a strip solution containing said metal values, the aqueous scrubbing solution being a mixture of strip solution and an aqueous solution which contains mineral acids anions and is free of the metal values. The process is particularly effective for purifying uranium, where one starts with impure aqueous uranyl nitrate, extracts with tributyl phosphate dissolved in carbon tetrachloride, scrubs with aqueous nitric acid and employs water to strip the uranium from the scrubbed organic phase.

Inventors:
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4312425
Patent Number(s):
2809091
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-12-004595
NSA Number:
NSA-12-004595
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-58
Country of Publication:
United States
Language:
English
Subject:
PATENTS; ANIONS; BETATRONS; BEVATRON; BUTYL PHOSPHATES; CARBON TETRACHLORIDE; CHARGED PARTICLES; CLEANING; DECAY; ENERGY RANGE; ERRORS; EXTRACTION COLUMNS; KAONS; KAONS-PLUS; LENSES; MAGNETIC FIELDS; MASS; MEASURED VALUES; METALS; MINERAL ACIDS; MIXING; MOMENTUM; NITRIC ACID; NUCLEAR EMULSIONS; NUMERICALS; ORGANIC COMPOUNDS; PARTICLE MODELS; PARTICLE TRACKS; PATENT; PROTON BEAMS; PROTONS; SOLUTIONS; SOLVENTS; SPECTROMETERS; SYNCHROTRONS; TARGETS; URANIUM; URANYL NITRATES; VELOCITY; WATER

Citation Formats

Jonke, A.A. SOLVENT EXTRACTION PROCESS. United States: N. p., 1957. Web.
Jonke, A.A. SOLVENT EXTRACTION PROCESS. United States.
Jonke, A.A. Tue . "SOLVENT EXTRACTION PROCESS". United States.
@article{osti_4312425,
title = {SOLVENT EXTRACTION PROCESS},
author = {Jonke, A.A.},
abstractNote = {In improved solvent extraction process is described for the extraction of metal values from highly dilute aqueous solutions. The process comprises contacting an aqueous solution with an organic substantially water-immiscible solvent, whereby metal values are taken up by a solvent extract phase; scrubbing the solvent extract phase with an aqueous scrubbing solution; separating an aqueous solution from the scrubbed solvent extract phase; and contacting the scrubbed solvent phase with an aqueous medium whereby the extracted metal values are removed from the solvent phase and taken up by said medium to form a strip solution containing said metal values, the aqueous scrubbing solution being a mixture of strip solution and an aqueous solution which contains mineral acids anions and is free of the metal values. The process is particularly effective for purifying uranium, where one starts with impure aqueous uranyl nitrate, extracts with tributyl phosphate dissolved in carbon tetrachloride, scrubs with aqueous nitric acid and employs water to strip the uranium from the scrubbed organic phase.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1957},
month = {10}
}