IMPROVEMENTS IN OR RELATING TO THE SEPARATION OF ZIRCONIUM AND HAFNIUM COMPOUNDS
Patent
·
OSTI ID:4190487
A fractional distillation method is given for separating Zr from Hf and purifying Zr. In an example a column of stainless steel coils or ceramic saddles is used, and a protective Ar atmosphere fills the apparatus and produces a pressure of 19,400 mm Hg. The temperature is carefully controlled at certain points in the apparatus. A performance of 30 theoretical plates is needed for pure ZrCl/sub 4/ separation. Using a longer column and a higher reflux ratio will allow separation of pure HfCl/sub 4/. A stainless steel column design for the process is described. (T.R.H.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-14-013805
- OSTI ID:
- 4190487
- Report Number(s):
- GB 833103
- Country of Publication:
- United Kingdom
- Language:
- English
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