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), Vol. 62:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
MOLTEN SALT FUELS
REDUCTIVE EXTRACTION
MOLTEN SALTS
CHEMICAL COMPOSITION
RADIUM
DISTRIBUTION FUNCTIONS
THORIUM
BERYLLIUM FLUORIDES
BISMUTH
CHEMICAL REACTIONS
LITHIUM FLUORIDES
MOLTEN SALT REACTORS
PHASE TRANSFORMATIONS
RADIUM FLUORIDES
REPROCESSING
SPENT FUELS
TEMPERATURE GRADIENTS
THORIUM FLUORIDES
ACTINIDE COMPOUNDS
ACTINIDES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BERYLLIUM COMPOUNDS
ELEMENTS
ENERGY SOURCES
EXTRACTION
FLUORIDES
FLUORINE COMPOUNDS
FUELS
FUNCTIONS
HALIDES
HALOGEN COMPOUNDS
LIQUID FUELS
LITHIUM COMPOUNDS
LITHIUM HALIDES
MATERIALS
METALS
NUCLEAR FUELS
RADIUM COMPOUNDS
REACTOR MATERIALS
REACTORS
SALTS
SEPARATION PROCESSES
THORIUM COMPOUNDS
052001* - Nuclear Fuels- Waste Processing
210500 - Power Reactors
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