The effect of salt composition on reductive extraction of some typical elements from molten LiF-BeF/sub 2/ salt into liquid bismuth

Journal Article · Mon Aug 01 00:00:00 EDT 1983 · Nucl. Technol.; (United States)

OSTI ID:6410616

Moriyama, I H; Moritani, K; Oishi, J; Tominaga, Y; Yajima, K

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 Univ., Dept. of Nuclear Eng., Kyoto
• OSTI ID: 6410616
• Journal Information: Nucl. Technol.; (United States), Vol. 62:2
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
MOLTEN SALT FUELS
REPROCESSING
RADIUM
DISTRIBUTION
REDUCTION
THORIUM
BERYLLIUM FLUORIDES
BISMUTH
CHEMICAL COMPOSITION
EQUILIBRIUM
HIGH TEMPERATURE
LITHIUM FLUORIDES
RADIUM FLUORIDES
THORIUM FLUORIDES
ACTINIDE COMPOUNDS
ACTINIDES
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALKALINE EARTH METALS
BERYLLIUM COMPOUNDS
CHEMICAL REACTIONS
ELEMENTS
ENERGY SOURCES
FLUORIDES
FLUORINE COMPOUNDS
FUELS
HALIDES
HALOGEN COMPOUNDS
LIQUID FUELS
LITHIUM COMPOUNDS
LITHIUM HALIDES
MATERIALS
METALS
NUCLEAR FUELS
RADIUM COMPOUNDS
REACTOR MATERIALS
SEPARATION PROCESSES
THORIUM COMPOUNDS
050800* - Nuclear Fuels- Spent Fuels Reprocessing