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    • 8. 发明专利
    • Method for separating copper from iron
    • AU6764000A
    • 2001-03-13
    • AU6764000
    • 2000-08-10
    • COGNIS CORP
    • KANG SANG IMATTISON PHILLIPVIRNIG MICHAEL JSUDDERTH R BRANTLEYWOLFE GEORGE A
    • C07C251/24C22B3/30C22B15/00C07C249/06C07C251/38
    • Copper is preferentially extracted from iron in an aqueous feedstock solution containing dissolved copper and iron values by contacting the feedstock solution with a water-immiscible organic solution comprised of a hydrocarbon solvent and a compound of the formula Iwherein R is a C 1-22 linear or branched alkyl group, a C 2-22 linear or branched alkenyl group, a C 6 aryl group, a C 7-22 aralkyl group, a halogen, OH or -OR wherein R is a C 1-22 linear or branched alkyl group, a C 2-22 linear or branched alkenyl group, a C 6 aryl group, a C 7-22 aralkyl group; R is hydrogen, or a C 1-22 linear or branched alkyl or alkenyl group, a C 6 aryl group or a C 7-22 aralkyl group; R -R is hydrogen, halogen, a linear or branched C 6-12 alkyl group, -OR wherein R is a C 1-22 linear or branched alkyl group, a C 2-22 linear or branched alkenyl group, a C 6 aryl group, or a C 7-22 aralkyl group to form an aqueous phase comprised of iron and an organic phase comprised of the hydrocarbon solvent and a copper-extractant complex wherein the copper-extractant complex is soluble in the hydrocarbon solvent. The R -R groups are chosen so that the copper-extractant complex is soluble in the hydrocarbon solvent. After the extraction stage is completed and the organic and aqueous phases separate, the organic phase is substantially free of iron and/or an iron-extractant complex.