Method for inhibiting corrosion in particulate zinc
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United States of America Patent
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Aug 3, 1993
Grant Date -
N/A
app pub date -
Dec 31, 1990
filing date -
Dec 31, 1990
priority date (Note) -
Expired
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Abstract
A method for the inhibition of corrosion in particulate zinc, comprises the step of subjecting the zinc in the form of an alkaline slurry to the action of a corrosion inhibiting effective amount of a corrosion inhibitor which is at least one oxide selected from the oxides of antimony, bismuth, cadmium, gallium, indium, lead, mercury, thallium and tin, and which preferably constitutes 0.05-4.0 parts by weight, based on the weight of the zinc. The particulate zinc may be that recovered electrolytically from at least partially spent electrolyte from a zinc-air battery. Corrosion inhibited particulate zinc which has been treated according to the above method, as well as a mixture of (untreated) particulate zinc with such treated zinc, also form part of the invention.
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