Process for the operation of copper electrolysis cells

Details Process for the operation of copper electrolysis cells Process for the operation of copper electrolysis cells

C - Chemistry, Metallurgy

25

C

C25C 7/00 (2006.01)

Patent

CA 2696635

In a process for the operation of copper electrolysis cells comprising a plurality of anode and cathode plates arranged vertically and parallel to each other, a longitudinal electrolyte inflow and an electrolyte outflow, the electrolyte is injected via the electrolyte inflow horizontally and parallel to the electrodes in each electrode gap always at the height of the lower third of the electrodes at a speed of from 0.3 to 1.0 m/s, with the cathode plates being arranged stationarily relative to the inflow direction. As a result, an optimized flow guidance of the electrolyte with regard to the electrodes is achieved, resulting in an increase in the limiting current density.

La présente invention concerne un procédé pour faire fonctionner des piles électrolytiques au cuivre comprenant une pluralité de plaques d'anode et de cathode disposées perpendiculairement et parallèlement entre elles, un élément d'amenée d'électrolyte disposé longitudinalement et un élément d'évacuation d'électrolyte. Selon l'invention, on fait circuler l'électrolyte par l'élément d'amenée d'électrolyte horizontalement et parallèlement aux électrodes dans chaque espace intermédiaire entre électrodes respectivement à la hauteur du tiers inférieur des électrodes à une vitesse de 0,3 à 1,0 m/s, les plaques de cathode étant disposées en un emplacement fixe vis-à-vis de la direction de circulation. On obtient ainsi un guidage optimisé du flux de l'électrolyte vis-à-vis des électrodes, ce qui conduit à une augmentation de la densité de courant limite.

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