Discussion on Oxidizing Pressure Leaching of Residues from Zinc Neutral Leaching Process

Generally,zinc calcine general adopts neuter-low acid-high acid three segments in leaching process.Iron would be leaching into the solution in the process of acid leaching which would increase the difficulty of removing iron.This paper discusses the feasibility of the residues from the neutral leaching by oxidic-acidic pressure leaching process,and propose a new technology of one oxidizing pressure and two oxidizing pressure leaching process.