The invention relates to a method for back extraction of amine
molybdenum-containing organic phase. The method adopts
single stage back extraction or multi-stage back current back extraction, the amine
molybdenum-containing organic phase comprises the following components by concentration: 1-20% of amine, 1-30 g / L of
molybdenum, and the balance a phase improver and a
diluent. The method comprisesthe following steps that 1, a back extraction agent is prepared, the back extraction agent is
mixed solution of
ammonia and
hydrogen peroxide, the
ammonia concentration range is 5-28%, the
hydrogen peroxide addition is 1-15% of the
ammonia addition, and the concentration range of the
hydrogen peroxide is 10-50%; 2, the back extraction agent prepared by the step one and the amine containing-molybdenum organic phase are subjected to mixing and back extraction, the
flow ratio of the organic phase to a water phase is 2:1-50:1, the back extraction time is 1-10 min, the back extraction temperature is 10-40 DEG C, and the
contact phase ratio between the organic phase and the water phase is 4:1-1:4; and 3, and the
mixed phase obtained in the step two is separated to obtain the containing-molybdenum back extraction fluid and a stripped organic phase. By means of the method, the interfacial
dirt produced in the back extraction process of the amine containing-molybdenum organic phase can be reduced by more than 50%.