Process for preparation of zinc powder for alkaline batteries by amalgamation of zinc powder
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United States of America Patent
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-
Jul 17, 1984
Grant Date -
N/A
app pub date -
Apr 6, 1983
filing date -
Apr 10, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Zinc powder containing mercury for alkaline batteries are prepared by reacting zinc powder with metallic mercury in the presence of amalgamation aids with agitation in a closed system, at a partial oxygen pressure of less than 100 mbar, while the volatile parts are continually exhausted, then raising the partial value of atmosphere air. Additional alloying elements can be added to reduce the gas development, by mixing zinc powder with metallic mercury in which is dissolved a part or the entire quantity of the required alloying elements.
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