process for recovering noble metals and a elettrolizzatore for use in the process

摘要

A process for recovering noble metals from wastes or other materials by electrolysis. The process takes place in a vessel (3) in the form of an essentially vertical cylinder, the walls of which constitute the anode and which contains at least one cathode (7) arranged at a distance from said walls. The material including the electrolyte is mixed in said vessel (3) and the mixture is imparted such a rotary motion that the noble metal particles are transported to the walls of the vessel (3) acting as an anode to bring the noble metals into solution by anodic oxidation. An electrolyzer (1) for recovering noble metals in accordance with the said process. The process may comprise the further step of destroying cyanides in the electrolyte by reversing the direction of current while maintaining intense mixing in the vessel.