Oxidative pressure acid leaching method for processing purified waste residue in zinc hydrometallurgy process

The invention relates to an oxidative pressure acid leaching method for processing the purified residue generated in the zinc hydrometallurgy process. The method comprises the following steps: the copper-cadmium residue generated during the copper-cadmium removal and the nickel-cobalt residue generated during the nickel-cobalt removal is replaced, i.e., the residue from the purification of zinc is leached with sulfuric acid in an acid-resistant high pressure autoclave under the condition that the high-pressure oxygen is introduced in. Compared with the commonly-used direct acid solution method, the method has the advantages of high leaching rate, high processing speed, no poisonous and harmful gas and iron removal during the leaching process, and the like, can obviously improve the prior process conditions, reduce the pollution andthe production cost and also provides a new method for processing the other waste residues containing heavy metal.