Interaction between UN and CdCl2 in molten LiCl-KCl eutectic. I. Experiment at 773 K

Alexander Zhitkov; Alexei Potapov; Kirill Karimov; Vladimir Shishkin; Alexander Dedyukhin; Yury Zaykov

Nuclear Engineering and Technology (Jan 2020)

Interaction between UN and CdCl2 in molten LiCl-KCl eutectic. I. Experiment at 773 K

Alexander Zhitkov,
Alexei Potapov,
Kirill Karimov,
Vladimir Shishkin,
Alexander Dedyukhin,
Yury Zaykov

Affiliations

Alexander Zhitkov: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Akademicheskaya Str. 20, Ekaterinburg, Russia
Alexei Potapov: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Akademicheskaya Str. 20, Ekaterinburg, Russia; Ural State Mining University, Kuybyshev Str. 30, Ekaterinburg, Russia; Corresponding author. Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Akademicheskaya Str. 20, Ekaterinburg, Russia.
Kirill Karimov: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Akademicheskaya Str. 20, Ekaterinburg, Russia
Vladimir Shishkin: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Akademicheskaya Str. 20, Ekaterinburg, Russia
Alexander Dedyukhin: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Akademicheskaya Str. 20, Ekaterinburg, Russia
Yury Zaykov: Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences, Akademicheskaya Str. 20, Ekaterinburg, Russia; Ural Federal University, Mira Str. 19, Ekaterinburg, Russia

Journal volume & issue: Vol. 52, no. 1
pp. 123 – 134

Abstract

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The interaction between UN and CdCl2 in the LiCl-KCl molten eutectic was studied at 773 K.The reaction was controlled by sampling the melt, as well as by analysis of the resulting precipitate. The process was shown to proceed according to several parallel reactions. The summary reaction was determined to have two stages: a fast one and a slow one. The 19–53% UN → UCl3 conversion was obtained for the molar ratio of CdCl2/UN = 1.22–14.9. The rest of UN converts into the precipitate of complex composition (UNCl + U2N3 + U4N7 + UN2). The increase in the CdCl2/UN molar ratio from 1.22 to 14.9 resulted in the decrease in duration of the first “fast” stage of the process from 18 h to 1 h. Keywords: Spent nuclear fuel, Nitride nuclear fuel, Chlorination, Pyrochemistry, UN, UNCl, Molten salts

Published in Nuclear Engineering and Technology

ISSN: 1738-5733 (Print)
Publisher: Elsevier
Country of publisher: Korea, Republic of
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Nuclear engineering. Atomic power
Website: http://www.journals.elsevier.com/nuclear-engineering-and-technology

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