Affiliation:
1. General Research Institute for Non-Ferrous Metals
2. University of Science and Technology Beijing
3. General Research Institute for Nonferrous Metals
Abstract
The NaCl-KCl-K2HfCl6 electrolyte successfully prepared by the reaction of HfCl4 with equimolar NaCl-KCl. Microstructure, surface morphology and components of the electrolyte were analyzed by XRD, SEM, and EDS. The results show that HfCl4 preferentially reacts with KCl when KCl and NaCl coexist or conversion relationship exist between Na2HfCl6 and K2HfCl6. The removal rates of oxygen reached 96.98%in electrorefining of hafnium attributed to high stability and low volatility of the electrolyte.
Publisher
Trans Tech Publications, Ltd.
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