Sorapec S.a.

Socomaten

Roger Lumbroso

Oliver Nicou

Metal hydroxides are produced in an easy-to-separate powder form from metal in solution, by passing an electric current through the solution to produce the formation of a preceipitated hydroxide against a solid ion-exchange membrane, which membrane separates the anode compartment from the cathode compartment. When the solution is acidic, the membrane is an anion exchange membrane. When the solution is basic, the membrane is a cation exchange membrane.

Method of producing metal hydroxides

An installation for the treatment of metals pickling solutions is disclosed. The invention provides for solutions to be treated by electrodialysis in a tank which is divided up to form sets of three compartments. Anode and cathode compartments in the form of removable cases are arranged alternately with spaces therebetween defining central compartments. In use, according to a preferred method of the invention, anolyte flows through the anode compartments while the picklng solution flows through the cathode and central compartments. Flow through the compartments may be either in series or in parallel.

Growing community of inventors

Paris, France

Roger Lumbroso