Efficient zinc extraction method for zinc calcine

The invention relates to an efficient zinc extraction method of zinc calcine, and belongs to the technical field of non-ferrous metal extraction. The method comprises the following eight procedures: neutral leaching of zinc calcine, neutral leaching of zinc oxide smoke dust, synergistic leaching, pre-neutralization, washing, preparation of GT superoxide for impurity removal, deep purification, electrodeposition and casting. The zinc calcine is firstly subjected to neutral leaching, so that a large amount of main phase ZnO is leached, almost no impurity is leached, and neutral leachate can be directly purified without neutralization and iron removal; znS which is difficult to leach in the zinc oxide smoke dust is used for synergistically reducing and leaching ZnFe2O4 which is difficult to leach in the calcine, so that the leaching rates of the zinc calcine and the zinc oxide smoke dust can be improved at the same time; in the neutralization stage, by regulating and controlling the proportion of Fe < 3 + > and