EXTRACTION OF ZIRCONIUM FROM NIGERIAN HIGH-HAFNIUM CONCENTRATE
Technical Report
·
OSTI ID:4062142
Investigations indicated that hafnium and zirconium compounds of acceptable purity can be extracted from Nigerian zircon concentrates. Chlorination and caustic soda fusion techniques were used to extract 85 to 95% of the valuable metals from the concentrate. The extracted hafnium and zirconium compounds were purified by recrystallization of the oxychlorides or by formation of complex salts during chlorination. The zirconium-hafnium product of the recrystallization method contained 15 ppm of uranium. The hafnium was separated from zirconium by solvent extraction methods. A zirconium product containing 0.3% hafnium and a hafnium product containing 4 irconium were obtained. (auth)
- Research Organization:
- Bureau of Mines, Albany, Oreg.
- NSA Number:
- NSA-15-014331
- OSTI ID:
- 4062142
- Report Number(s):
- BM-RI-5747
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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