Behaviour of rare earth elements in molten salts in relation to pyrochemical reprocessing of spent nuclear fuels / Volkovich V.A., Vasin B.D., Griffiths T.R., Polovov I.B., Medvedev E.O., Yakimov S.M. // ECS Transactions. - 2007. - V. 3, l. 35. - P. 493-502.

ISSN:
19385862
Type:
Conference Paper
Abstract:
The kinetics of chlorination of lanthanide oxides (by Cl2 and HCl) and precipitation of lanthanide phosphates was studied by in situ electronic absorption spectroscopy in 3LiC1-2KC1 and NaCl-KCl melts at 400-750°C Products of the chlorination are the corresponding hexachlorospecies, LnCl63-, and the rate of chlorination increases with increasing temperature. Composition of the precipitated phosphates depends on the melt composition and 1.5-5 fold excess of phosphate, depending on the nature of lanthanide, is needed for the complete removal of the lanthanides from the melt. Over three hours are required for completing the reaction of phosphate precipitation. copyright The Electrochemical Society.
Author keywords:
Index keywords:
International symposium; lanthanide oxides; Molten salts; Pyrochemical reprocessing; Spent nuclear fuel (SNF); Blood vessel prostheses; Chlorine; Fused salts; Metals; Nuclear fuels; Rare earth element
DOI:
10.1149/1.2798692
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Affiliations Department of Rare Metals, Ural State Technical University-UPI, Ekaterinburg 620002, Russian Federation; Redston Trevor Consulting, Ltd., Leeds LS17 8RF, United Kingdom
References Kleykamp, H., (1985) J. Nucl. Mater, 131, p. 221; Kleykamp, H., (1988) Nucl. Technol, 80, p. 412; A. I. Kryukova, I. A. Korshunov, V. A. Mitrofanova, A. A. Burnaeva, O. V. Skiba, G. N. Kazantsev and V. T. Sergeeva, in: Phys. Chem. Electrochem. Molten and Solid Electrolytes, pt. 1, p. 138, Akad Nauk SSSR, Ural. Nauch. Tsentr, Sverdlovsk (1979) (in Russian); Kryukova, A.I., Korshunov, I.A., Burnaeva, A.A., Skiba, O.V., Kazantsev, G.N., (1981) Sov. Radiochem, 23, p. 106; Burnaeva, A.A., Kryukova, A.I., Kazantsev, G.N., Skiba, O.V., Korshunov, I.A., (1984) Sov. Radiochem, 26, p. 229; Burnaeva, A.A., Volkov, Y.F., Kryukova, A.I., (1994) Radiokhimiya, 36, p. 289; Kazantsev, G.N., Skiba, O.V., Burnaeva, A.A., Kolesnikov, V.P., Volkov, Y.F., Kryukova, A.I., Koshunov, I.A., (1982) Sov. Radiochem, 24, p. 78; Volkovich, V.A., Griffiths, T.R., Thied, R.C., Molten Salts XIII (2002) The Electrochemical Society Proceedings Series, PV 2002-19, p. 590. , H. C. Delong, R. W. Bradshaw, M. Matsunaga, G. R. Stafford and P. C. Trulove, Editors, Pennington, NJ; Volkovich, V.A., Griffiths, T.R., Thied, R.C., (2003) Phys. Chem. Chem. Phys, 5, p. 3053; Volkovich, V.A., Griffiths, T.R., Thied, R.C., (2003) J. Nucl. Mater, 323, p. 49; Volkovich, V.A., May, I., Charnock, J.M., Lewin, B., (2002) Phys. Chem. Chem. Phys, 4, p. 5753; Busev, A.I., Tiptsova, V.G., Ivanov, V.M., (1970) Handbook of the Analytical Chemistry of Rare Elements, p. 78. , Ann Arbor, Humphrey Science Publishers, London; E. P. Aleksandrov, B. D. Vasin and S. P. Raspopin, in Phys. Chem. Electrochem. Molten and Solid Electrolytes, pt. 1, p. 80, Akad Nauk SSSR, Ural. Nauch. Tsentr, Sverdlovsk (1979) (in Russian); Ivanovskii, L.E., Nekrasov, V.N., (1979) Gases and Ionic Melts, p. 106. , Nauka, Moscow , in Russian; Ukshe, E.A., Leonova, L.S., Bukun, N.G., (1974) Ionic Melts, 1, p. 21. , Yu. K Delimarskii, Editor, Naukova Dumka, Kiev , in Russian; Harrison, M., Jackson, A., (2005) Actinides-2005 Int. Conf. 4-8 July, 2005, Abstracts, p. 141. , Manchester
Correspondence Address Volkovich, V. A.; Department of Rare Metals, Ural State Technical University-UPI, Ekaterinburg 620002, Russian Federation
Sponsors Electrochemical Society, Phys. Anal. Electrochem. Div.;Electrochemical Society, Electrodeposition Division;Electrochemical Society, High Temperature Materials Division;Electrochemical Society, Battery Division;Electrochemical Society, Energy Technology Division
Conference name 15th International Symposium on Molten Salts - 210th ECS Meeting
Conference date 29 October 2006 through 3 November 2006
Conference location Cancun
Conference code 72280
ISBN 9781566775922
Language of Original Document English
Abbreviated Source Title ECS Transactions
Source Scopus