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从氧化铜矿氨浸出液中萃取铜的研究.pdf

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第34卷第3期昆明理工大学学报(理工版)http:llw咖,./ 2009年6月 Journal ofKunming University Te,·hnoh)gy(srien(‘e andTe,’hnology) doi:.1007— A Study on Copper Extraction from Ammoniac Leach Solution ofCopper Oxidized Ore FANG ,LI Yi—fen2,LI UDian—wenl,ZHANG Wen·binl ( Land Resource Engineering,Kunming University Science and Technology,Kunming 650093,China; JinshaMining Co。Ltd。Kunming 654100,China) Abstract:The extractant LIX一84一I originallyproduced forcopper extractionfromacidicleach solution ofcopper oxidized 01' thisstudy,however,it used essfully fortheextraction ofcopper from ammoniac leachsolution,and thistechnology hasfuitherbeen investigations care thatLIX84一I reallyan efficientcopper extractant with amaximum extractionof ashigh % under theconditions of3g/L Cuinleachsolution,pH>,phase ratio I/I,NH3 moVL,and 3win found thatinorder toeusnre asmooth plant extractionoperation,it necessary thatthe con- centration ofsolidfineparticles inthefeedsolutionbekept under 120mg/Land theC02 above . The stripping Canbe conducted withthebarrenelectrolyte as astripping agent inwhich thesulfuricacid concentration remaim about2130g/L,and astripping %is obtained. Key words:copper oxidized ore;ammoniac leaching;solvent extraction CLC;TF811;:

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