Patent ID: 6361677
Filing Date: 2002-03-26
Classification: C25D

Abstract:
Plant for the electrolytic dissolution by oxidation of a metal comprising:an electrolysis cell (1; 1â€²; 1â€³) having a soluble anode (2; 2â€²; 2â€³) based on the said metal to be dissolved and an insoluble cathode (3; 3â€²; 3â€³) without an interposed membrane, means for introducing, into the said cell, electrolyte bath to be enriched in ions of the said oxidized metal and means for removing, from the said cell, bath enriched in ions of the said oxidized metal, which means are suitable for keeping the said anode and the said cathode at least partially immersed in the said bath, means for circulating an electric current between the said soluble anode and the said cathode, so as to dissolve the metal of the said anode in the said bath, characterized in that it comprises means for maintaining an appropriate bath density gradient in the said cell so that, if D1 is the density of the bath in the vicinity of the cathode and if D2 is the density of the bath in the vicinity of the most active part of the anode, D2>D1 and (D2âˆ’D1)&gE;100 g/l.