Process for the selective extraction of silver from an aqueous copper (I) chloride solution containing dissolved silver

摘要

According to the present invention, silver is extracted from solutions containing copper (I) chloride complexes by passing the solution through a porous cathode (12) - as shown in Fig. 1 while the cathode (12) is maintained, for example with the aid of a potentiometer (16), at a predefined potential, essentially only silver being deposited on the cathode (12). Preferably, the porous cathode (12) is maintained at a potential in the range from 100 to 150 millivolt negative with respect to the potential of the calomel electrode, described as the reference electrode (17).
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