Method for extracting copper from leach solutions at elevated temperatures
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United States of America Patent
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Issued Date -
Dec 23, 2004
app pub date -
Apr 22, 2004
filing date -
May 15, 2003
priority date (Note) -
Abandoned
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Abstract
Copper is extracted from aqueous copper leach solutions wherein the leach solutions have a temperature of at least 30.degree. C. The method comprises contacting the aqueous solution with an extraction reagent of the formula (I) 1 wherein R is a linear or branched C.sub.10-18 alkyl group and R.sub.1 is H or CH.sub.3. These extraction reagents do not undergo any significant degradation normally encountered with the use of conventional reagents in leach solutions having temperatures equal to or greater than 30.degree. C.
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