Process for the recovery of valuable metals from an acidic aqueous leaching solution comprises liquid/liquid extraction of the solution by contacting the solution once with an organic water insoluble extractant

摘要

Process for the recovery of valuable metals from an acidic aqueous leaching solution containing 10-40 g/l valuable metal ions comprises liquid/liquid extraction of the solution by contacting the solution once with an organic water insoluble extractant; contacting the extractant charged with valuable metal ions with an acidic aqueous phase, the metal ions being converted into the acidic aqueous phase; and subjecting the acidic aqueous phase to electrolysis or crystallization to recover the valuable metal. The pH of the aqueous leaching solution is adjusted to 1.2-2.5 before and/or during the liquid/liquid extraction. Preferred Features: The leaching solution contains copper ions.