The effect of salt composition on reductive extraction of some typical elements from molten LiF-BeF/sub 2/ salt into liquid bismuth
The distribution coefficients of thorium and radium between molten LiF-BeF/sub 2/ and liquid bismuth solutions were measured at 600/sup 0/C in support of the processing of the molten-salt breeder reactor (MSBR) fuel. The increasing mole fraction of LiF in the salt phase from 40 to 70 mol% resulted in the rapid decrease of the distribution coefficient of thorium and in the slow decrease of that of radium. A comprehensive correlation of distribution behavior with salt composition is given by taking into account the formation of complex ions. The equilibrium distribution data affirm that thorium and radium exist mainly as Li/sub 2/ThF/sub 6/ and RaF/sub 2/, respectively, in the salt phase. It is suggested that the lower mole fraction of LiF in the fuel salt is effective in the MSBR fuel processing.
- Research Organization:
- Kyoto University, Department of Nuclear Engineering, Faculty of Engineering, Yoshida, Sakyo-ku, Kyoto 606
- OSTI ID:
- 5451091
- Journal Information:
- Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 62:2; ISSN NUTYB
- Country of Publication:
- United States
- Language:
- English
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ACTINIDE COMPOUNDS
ACTINIDES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BERYLLIUM COMPOUNDS
BERYLLIUM FLUORIDES
BISMUTH
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
DISTRIBUTION FUNCTIONS
ELEMENTS
ENERGY SOURCES
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FLUORINE COMPOUNDS
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HALOGEN COMPOUNDS
LIQUID FUELS
LITHIUM COMPOUNDS
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MATERIALS
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MOLTEN SALT FUELS
MOLTEN SALT REACTORS
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NUCLEAR FUELS
PHASE TRANSFORMATIONS
RADIUM
RADIUM COMPOUNDS
RADIUM FLUORIDES
REACTOR MATERIALS
REACTORS
REDUCTIVE EXTRACTION
REPROCESSING
SALTS
SEPARATION PROCESSES
SPENT FUELS
TEMPERATURE GRADIENTS
THORIUM
THORIUM COMPOUNDS
THORIUM FLUORIDES