Process for heavy metals electrowinning
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United States of America Patent
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Jul 9, 1996
Grant Date -
N/A
app pub date -
Sep 6, 1995
filing date -
Sep 8, 1994
priority date (Note) -
Expired
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Abstract
The conditions for electrowinning Zn, Ni, Co and Cd metals from baths based on chlorinated ammino complexes of Me(NH.sub.3).sub.n Cl.sub.m type are substantially improved by the addition of small levels of dissolved Br, which considerably reduce the cell voltage without exerting any negative effects on cathodic current yields.
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