The stripping and regeneration of the loaded organic phase of phosphorous mixer extractant (PPD) were studied.The mixed solutions (3 mol/L HCl +2 mol/L ZnCl2) were used as the stripping agent and more than 99% of indium can bestripped after three-stage stripping when the volume ratio of organic phase to stripping agent is 1:1. The organic phase canbe recycled to use after regeneration with HCl. The parallel contrast experiments with D2EHPA (di-2-ethyl hexyl phospho-ric acid) were carried out under the same conditions. The results show that the mixer extractant has good reusability and thestripping and regeneration of PPD are superior to those of D2EHPA.
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