PURIFICATION OF HAFNIUM TETRACHLORIDE BY ALKALI-CHLORIDE FUSION
Technical Report
·
OSTI ID:4834137
The investigation of methods for purification of hafnium tetrachloride was undertaken to aid in producing a higher purity hafnium metal than is currently produced by the Kroll process. The quantities of metallic impurities in the metal were decreased by contact with molten alkali-metal chloride salts. During purification ~3O% of the initial hafnium tetrachloride was trapped with the fused salt. Two methods of reclaiming the hafnium were investigated: precipitation of hafnium hydroxide, and precipitation of the oxychloride. (auth)
- Research Organization:
- Bureau of Mines. Albany Metallurgy Research Center, Ore.
- NSA Number:
- NSA-16-000085
- OSTI ID:
- 4834137
- Report Number(s):
- BM-RI-5870
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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