Electrochemical process for zirconium alloy recycling
This patent describes a method of separating nickel from zirconium for recycling nickel-containing zirconium alloy. It comprises: placing the nickel-containing zirconium in a molten alt bath at 500{degrees} to about 722{degrees} C. with the molten salt in the molten salt bath consisting essentially of a mixture of 0 to about 46.5 mole % lithium fluoride, about 11.5 to about 40 mole % sodium fluoride and potassium fluoride to produce a molten salt bath containing dissolved zirconium and dissolved nickel; electrochemically plating the nickel from the molten salt bath at a voltage sufficient to plate nickel but less than the voltage to plate zirconium to provide an essentially nickel-free molten salt bath; and electrochemically plating the zirconium from the essentially nickel-free molten salt bath to provide an essentially nickel-free zirconium.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA (USA)
- Patent Number(s):
- US 4923579; A
- Application Number:
- PPN: US 7-242573A; TRN: 90-025582
- OSTI ID:
- 6726112
- Resource Relation:
- Patent File Date: 12 Sep 1988
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NICKEL ALLOYS
RECYCLING
ZIRCONIUM BASE ALLOYS
CHEMICAL COMPOSITION
DISSOLUTION
ELECTROCHEMISTRY
LITHIUM FLUORIDES
ALKALI METAL COMPOUNDS
ALLOYS
CHEMISTRY
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LITHIUM COMPOUNDS
LITHIUM HALIDES
ZIRCONIUM ALLOYS
360101* - Metals & Alloys- Preparation & Fabrication
400400 - Electrochemistry