METHOD FOR EXTRACTING COPPER FROM LEACH SOLUTIONS AT ELEVATED TEMPERATURES

摘要

Copper is extracted from aqueous copper leach solutions wherein the leach solutions have a temperature of at least 30~C. The method comprises contacti ng the aqueous solution with an extraction reagent of the formula (I) : wherein R is a linear or branched C10-18 alkyl group and R1 is H or CH3. 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~C.