METHOD FOR THE RECOVERY OF METALS FROM CHLORIDE SOLUTIONS

摘要

A method for the recovery of metals, generally heavy metals or chelatable metals such as zinc or copper from chloride solutions such as acid chloride etching solutions comprises extracting the metal with a mixed extracting agent of anion exchange/chelating, solvating/cation exchange or anion exchange/cation exchange character, separating the organic phase washing it with water, aqueous ammonia or aqueous ammoniacal ammonium sulphate, stripping the metal from the organic phase thereby obtained by contacting it with sulphuric acid and returning the organic phase to the extraction stage for reuse after regenerating it.