A procedure for the extraction of Copper from Copper Ore or Concentrate sulfuric acid

摘要

The process of extracting copper from the dementia or concentrate of copper sulfate includes the following steps: oxidize the ore or concentrate under the pressure of oxygen, and acid solution containing halide and sulfate ion to achieve the final pressure oxidation suspension state, 1. The suspension is placed in the liquid / solid separation stage for filtration and solid residue by pressure oxidation containing an insoluble copper sulfate basic sa1. The basic salt of cupric sulfate produced by pressure oxidation in the second leaching process is used for leaching, so as to dissolve the leaching solution containing cupric sulfate solution and the final solid residue; The leach solution is separated from the solid residue; the leach solution is placed in the solvent extraction process to generate concentrated copper solution and lean copper refinery, and at least part of the refined solution is recycled to pressure oxidation.