ELECTROREFINING ZIRCONIUM
Technical Report
·
OSTI ID:4033564
Investigations were conducted to determine the feasibility of molten salt electrorefining of zirconium scrap, offgrade sponge, and alloys. Offgrade zirconium sponge having a Brinell hardness of 169 was refined by this technique to produce a metal having a Brinell hardness of less than 90. Zirconium alloy scrap, approximating Zircaloy-2 in composition was refined to recover zirconium metal with a Brinell hardness of less than 100 that was essentially free of the major alloying elements. The electrolyte that was successfully used consisted of molten sodium chloride to which sufficient potassium fluozirconate was added to produce a 2% zirconium content. Zirconium-chloride-bearing electrolytes were unsatisfactory and studies were suspended. Conditions established for the electrorefining of zirconium and the zirconium alloy studied were: 830 plus or minus 10 deg C operating temperature, 0.2 to 0.5 v for cell voltage, and initial cathode current densities of 200 to 250 amps/ft/sup 2/. (auth)
- Research Organization:
- Bureau of Mines, Boulder City, Nev.
- NSA Number:
- NSA-15-015964
- OSTI ID:
- 4033564
- Report Number(s):
- BM-RI-5758
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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