METHOD AND DEVICE FOR REGULATING THE METAL ION CONCENTRATIONIN AN ELECTROLYTE FLUID AS WELL AS APPLICATION OF SAID METHOD AND USE OF SAID DEVICE

摘要

The regulation of the concentration of metal ions in an electrolyte, for the electrolytic separation of metals, containing additional substances of an electrochemically reversible redox system is conventionally achieved by passing at least a part of the electrolyte through an auxiliary cell, comprising an insoluble auxiliary anode (20) and at least one auxiliary cathode (30), between which a flow of current is generated by application of a voltage. Excess amounts of the oxidised material from the redox system are thus reduced at the auxiliary cathode (30) and the formation of ions of the metal to be separated is avoided. According to the invention, pieces of the metal to be separated (30) are used as the auxiliary cathode.