摘要：采用2-乙基已基磷酸（P204）与溶剂煤油构成微乳液膜体系对水相中的 Co2+进行萃取研究,考察了微乳液中P204浓度、萃原液初始浓度及 PH、 萃取时间和乳水比对Co2 +萃取率的影响。综合实验表明，综合实验研究表明,当萃原液初始浓度为0.05mol/ L,外水相pH为2，微乳液中P204的体积比为10%,乳水比为2:1，萃取时间为10min时,Co2+的萃取率达到98%以上。

关键词：微乳液 ；钴提取

Abstract: Extraction’s study on using 2-cthylhexyl (P204) and the solvent kerosene constitute Co2+ of microemulsion membrane system on the water phase, investigated concentration of P204 in microemulsion, extracted in the initial concentration of the stoste and PH, and Rew affect extraction ratio of Co2+.Comprehensive experimental studies show that when the initial concentration of the stoste for 2 mol/L, PH of external water phase for 2, the volume ratio of P204 in microemulsion is 10 %, Rew is 1:2, extraction time is 10 minutes so that the extraction rate of Co2+ reached more than98%.

Keywords: Microemulsion film; Cobalt Separate