Patent Number: 6,309,531

Title: Process for extracting copper or iron

Abstract: A chemical process is disclosed for extracting copper or iron (M). The copper or iron is exposed to a leaching solution comprised of a metal salt (m) such that the copper or iron (M) is solvated and the metal ion (m) is reduced according to the reaction An electrolytic cell has an anion exchange membrane separating an anode chamber from a cathode chamber. The leaching solution with the solvated copper or iron is placed into the cathode chamber of the electrolytic cell. A second solution comprising a reduced state metal salt m.sup.+2 of the salt in the leaching solution is then added to the electrolytic cell anode chamber. A voltage is applied to reduce and deposit the copper Cu.sup.+2 or iron Fe.sup.+2 at the cathode and to oxidize the metal m.sup.+2 at the anode. The oxidized metal m.sup.+2 in the anode chamber is then recycled as leaching solution for solvating copper or iron. The cathode chamber reduced-metal-containing solution is transferred to the anode chamber for oxidation of the reduced metal m.sup.+2.

Inventors: Murray; Michael C. (Eustis, FL)

Assignee: USF Filtration and Separations Group, Inc.

International Classification: C22B 7/00 (20060101); C25C 1/06 (20060101); C25C 1/12 (20060101); C25C 1/00 (20060101); C22B 15/00 (20060101); C25C 001/12 ()

Expiration Date: 10/30/2018