Process for multiple stage direct electrowinning of copper
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United States of America Patent
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Dec 9, 2008
Grant Date -
Jul 6, 2006
app pub date -
Oct 28, 2005
filing date -
Oct 29, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent/solution extraction techniques or apparatus. A process for recovering copper from a copper-containing ore generally includes the steps of providing a feed stream containing comminuted copper-containing ore, concentrate, or other copper-bearing material, leaching the feed stream to yield a copper-containing solution, conditioning the copper-containing solution through one or more physical or chemical conditioning steps, and electrowinning copper directly from the copper-containing solution in multiple electrowinning stages, without subjecting the copper-containing solution to solvent/solution extraction prior to electrowinning.
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