Actions for Enriched uranium recovery flowsheet improvements [electronic resource].

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Enriched uranium recovery flowsheet improvements [electronic resource].

Published
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1986.
Physical Description
Pages: 26 : digital, PDF file
Additional Creators
United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Savannah River uses 7.5% TBP to recover and purify enriched uranium. Adequate decontamination from fission products is necessary to reduce personnel exposure and to ensure that the enriched uranium product meets specifications. Initial decontamination of the enriched uranium from the fission products is carried out in the 1A bank, 16 stages of mixer-settlers. Separation of the enriched uranium from the fission product, /sup 95/Zr, has been adequate, but excessive solvent degradation caused by the long phase contact times in the mixer-settlers has limited the /sup 95/Zr decontamination factor (DF). An experimental program is investigating the replacement of the current 1A bank with either centrifugal contactors or a combination of centrifugal contactors and mixer-settlers. Experimental work completed has compared laboratory-scale centrifugal contactors and mixer-settlers for /sup 95/Zr removal efficiencies. Feed solutions spiked with actual plant solutions were used. The /sup 95/Zr DF was significantly better in the mixer-settlers than in the centrifugal contactors. As a result of this experimental study, a hybrid equipment flowsheet has been proposed for plant use. The hybrid equipment flowsheet combines the advantages of both types of solvent extraction equipment. Centrifugal contactors would be utilized in the extraction and initial scrub sections, followed by additional scrub stages of mixer-settlers.
Report Numbers
E 1.99:dp-ms-86-9
E 1.99: conf-8605127-6
conf-8605127-6
dp-ms-86-9
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1986.
"dp-ms-86-9"
" conf-8605127-6"
"DE86015859"
10. annual actinide workshop, Los Alamos, NM, USA, 12 May 1986.
Holt, D L.
Savannah River Lab., Aiken, SC (USA)
Funding Information
AC09-76SR00001
View MARC record | catkey: 14397401