METHOD AND DEVICE FOR RECOVERING METALS WITH PULSATING CATHODE CURRENTS ALSO COMBINED WITH ANODE COUPLING PROCESSES

摘要

The invention relates to effective recovery of metals from process solutions and effluents by means of pulsating cathode currents, preferably with coupled anode processes. In order to obtain a metal deposit using a co-current flow in non-divided electrolyte cells or electrolyte cells which are divided by means of separators, the pulsating cathode currents are produced by dividing the anodes into stationary disposed strips in front of which the non-divided cathode surface passes. The current pulses formed on the cathode surface can be varied in form and frequency according to the arrangement of the anode strips and by current barriers. Preferably, a device with rotating cylinder cathodes and concentrically arranged anode pouches whose side walls act as current barriers and current breakers is used. The invention makes it possible to recover metals in an efficient manner, also ensuring coupling with various anode processes e.g. for the regeneration of peroxide sulphates and for oxidative decomposition of inorganic or organic harmful substances.