Decomposition of zirconium and hafnium fluorides using sublimation-sorption method
https://doi.org/10.17073/0021-3438-2016-3-20-27
Abstract
The process of nuclear grade zirconium tetrafluoride (ZTF) production in a single decomposition stage was proposed and experimentally confirmed. To achieve this goal vapors of the source ZTF has to be run either through the layer of powdery zirconium dioxide with a height of 140–150 mm or above its layer with a length of 1000–1100 mm. The process cascade for the production of nuclear grade pure zirconium tetrafluoride and hafnium tetrafluoride with a hafnium content of over 99 % in a single decomposition stage and without any technological waste was developed and calculated. It was shown that the proposed process cascade for the single stage decomposition and enrichment of zirconium tetrafluoride and hafnium tetrafluoride allows to produce both zirconium tetrafluoride with a hafnium content of up to 0,01 wt.% from the source zirconium tetrafluoride having a hafnium content of 2,0 wt.% and hafnium concentrate containing more than 99 % of hafnium.
About the Authors
I. Yu. Rusakov
Северский технологический институт – филиал Национального исследовательского ядерного университета «МИФИ» (СТИ НИЯУ МИФИ), 636035, Томская обл., г. Северск, пр. Коммунистический, 65
Russian Federation
Russian Federation
Cand. Sci. (Eng.), associate prof., Department of machinery and devices of chemical and nuclear production, Seversk Technological Institute (STI) «National Research Nuclear University «MEPhI» (636035, Russia, Tomsk Region, Seversk, Communistic pr., 65).
A. S. Buynovskiy
Северский технологический институт – филиал Национального исследовательского ядерного университета «МИФИ» (СТИ НИЯУ МИФИ), 636035, Томская обл., г. Северск, пр. Коммунистический, 65
Russian Federation
Russian Federation
Dr. Sci. (Eng.), honoured scientist of Russian Federation, prof., Department of chemistry and technology of modern energetics materials, STI «MEPhI».
V. L. Sofronov
Северский технологический институт – филиал Национального исследовательского ядерного университета «МИФИ» (СТИ НИЯУ МИФИ), 636035, Томская обл., г. Северск, пр. Коммунистический, 65
Russian Federation
Russian Federation
Dr. Sci. (Eng.), prof., head of Department of chemistry and technology of modern energetics materials, STI «MEPhI».
L. D. Ageeva
Северский технологический институт – филиал Национального исследовательского ядерного университета «МИФИ» (СТИ НИЯУ МИФИ), 636035, Томская обл., г. Северск, пр. Коммунистический, 65
Russian Federation
Russian Federation
Cand. Sci. (Eng.), associate prof., Department of chemistry and technology of modern energetics materials, STI «MEPhI».
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Review
For citations:
Rusakov I.Yu., Buynovskiy A.S., Sofronov V.L., Ageeva L.D. Decomposition of zirconium and hafnium fluorides using sublimation-sorption method. Izvestiya. Non-Ferrous Metallurgy. 2016;(3):20-27. (In Russ.) https://doi.org/10.17073/0021-3438-2016-3-20-27
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