FIELD: production of materials for nucleonics. SUBSTANCE: zirconium is purified against hafnium, the process is carried out by recrystallization of fluorine-containing zirconium compound. Zirconium complex having formula ZrF4•L where L is sulfoxide, and its derivatives or formamide and its derivatives, or urea are used as mentioned above zirconium compound. EFFECT: improved efficiency of the method, improved quality of desired product.
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