| abstract |
(57) [Abstract] [Technical problem] Providing a method for recovering gold with high purity. SOLUTION: The gold-containing chloride post-leaching solution is subjected to DBC solvent extraction / hydrochloric acid scrubbing / gold reduction steps: (1) Prior to solvent extraction, the post-leaching solution hydrochloric acid concentration is adjusted to 0.5 to 1.75 N, And scrubbing with 0.25-0.75N hydrochloric acid: and / or (2) 5 stage scrubbing with hydrochloric acid: 3 After step scrubbing, centrifuge to 0.05-5 μm Filter separation using the above filter, and then carry out two-stage scrubbing on the obtained organic phase; after carrying out five-stage scrubbing, centrifuge and filter-separate using 0.05-5 μm filter. Or, after performing 3-step scrubbing, centrifuging and then separating by filtration using a filter of 0.05 to 5 μm, and further performing 2-step scrubbing on the obtained organic phase, and then centrifuging. Separate and Filter and separate using a 0.05 to 5 μm filter. |