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

Abstract

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.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Kyoto University, Department of Nuclear Engineering, Faculty of Engineering, Yoshida, Sakyo-ku, Kyoto 606
OSTI Identifier:
5451091
Resource Type:
Journal Article
Journal Name:
Nucl. Technol.; (United States)
Additional Journal Information:
Journal Volume: 62:2
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 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, Breeding

Citation Formats

Hirotake, M, Jun, O, Kimikazu, M, Kunimitsu, Y, and Yasunobu, T. The effect of salt composition on reductive extraction of some typical elements from molten LiF-BeF/sub 2/ salt into liquid bismuth. United States: N. p., 1983. Web.
Hirotake, M, Jun, O, Kimikazu, M, Kunimitsu, Y, & Yasunobu, T. The effect of salt composition on reductive extraction of some typical elements from molten LiF-BeF/sub 2/ salt into liquid bismuth. United States.
Hirotake, M, Jun, O, Kimikazu, M, Kunimitsu, Y, and Yasunobu, T. 1983. "The effect of salt composition on reductive extraction of some typical elements from molten LiF-BeF/sub 2/ salt into liquid bismuth". United States.
@article{osti_5451091,
title = {The effect of salt composition on reductive extraction of some typical elements from molten LiF-BeF/sub 2/ salt into liquid bismuth},
author = {Hirotake, M and Jun, O and Kimikazu, M and Kunimitsu, Y and Yasunobu, T},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/5451091}, journal = {Nucl. Technol.; (United States)},
number = ,
volume = 62:2,
place = {United States},
year = {Mon Aug 01 00:00:00 EDT 1983},
month = {Mon Aug 01 00:00:00 EDT 1983}
}