Method for separating uranium (VI) from actinides(IV) and/or actinides (VI) and its uses
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United States of America Patent
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Nov 24, 2009
Grant Date -
Jul 6, 2006
app pub date -
Nov 17, 2004
filing date -
Nov 20, 2003
priority date (Note) -
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Abstract
The invention relates to a method for separating uranium(VI) from one or more actinides selected from actinides(IV) and actinides(VI) other than uranium(VI), characterized in that it comprises the following steps:a) bringing an organic phase, which is immiscible with water and contains the said uranium and the said actinide or actinides, in contact with an aqueous acidic solution containing at least one lacunary heteropolyanion and, if the said actinide or at least one of the said actinides is an actinide(VI), a reducing agent capable of selectively reducing this actinide(VI); andb) separating the said organic phase from the said aqueous solution.Applications: reprocessing irradiated nuclear fuels, processing rare-earth, thorium and/or uranium ores.
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International Classification(s)
- C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....
- C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
- C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C01G:COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLAS....
- C01F:COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUM....
- B01D:SEPARATION
- C01D:COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, ....
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