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The fate of selected impurities in the recrystallization of zirconium oxychloride and in its conversion to zirconium tetrafluoride

Published online by Cambridge University Press:  31 January 2011

James A. Sommers ,
Jeff V. Fahey ,
Kenneth J. Ewing  and
Ishwar D. Aggarwal
James A. Sommers
Affiliation:
Teledyne Wah Chang Albany, P.O. Box 460, Albany, Oregon 97321-0136
Jeff V. Fahey
Affiliation:
Teledyne Wah Chang Albany, P.O. Box 460, Albany, Oregon 97321-0136
Kenneth J. Ewing
Affiliation:
Naval Research Laboratory, Code 6573, Washington, DC 20375-5000
Ishwar D. Aggarwal
Affiliation:
Naval Research Laboratory, Code 6573, Washington, DC 20375-5000
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Abstract

The fate of Fe, Co, Y, and Ce impurities is determined in the process of recrystallization of zirconium oxychloride and in its subsequent fluorination with aqueous hydrofluoric acid to ZrF4 · H2O. Techniques of gamma ray spectrometry were used to follow radioisotopes introduced at critical steps in the process. All impurities remained in the recrystallization liquor. The liquor and its associated impurities, which is retained on the crystals, can be displaced by acid washing. In fluorination, Fe and Co are rejected while Y and Ce are retained and cannot be removed by washing.

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Type
Articles
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Journal of Materials Research , Volume 5 , Issue 2 , February 1990 , pp. 392 - 396
Copyright
Copyright © Materials Research Society 1990

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References

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