Process for the dissolution of copper metal
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United States of America Patent
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Issued Date -
Jul 24, 2008
app pub date -
Oct 31, 2007
filing date -
Feb 14, 2002
priority date (Note) -
Abandoned
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Abstract
A method of dissolving a copper mass includes contacting a copper mass with an oxidant such as air and an aqueous leach liquor containing monoethanolamine ('MEA') and (HMEA).sub.2CO.sub.3, wherein said leach liquor is produced by partially carbonating the MEA, and said leach liquor further contains between 1.9 g/L and 13.7 g/L of dissolved copper, forms a liquid product comprising between 100 and 130 g Cu/L in 48 hours or less.
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