Global Patent Index - EP 2064369 A1

EP 2064369 A1 20090603 - ELECTROCHEMICAL PROCESS FOR THE RECOVERY OF METALLIC IRON AND CHLORINE VALUES FROM IRON-RICH METAL CHLORIDE WASTES

Title (en)

ELECTROCHEMICAL PROCESS FOR THE RECOVERY OF METALLIC IRON AND CHLORINE VALUES FROM IRON-RICH METAL CHLORIDE WASTES

Title (de)

ELEKTROCHEMISCHES VERFAHREN ZUR RÜCKGEWINNUNG VON EISENMETALL- UND CHLORWERTSTOFFEN AUS EISENREICHEN METALLCHLORIDABFÄLLEN

Title (fr)

PROCÉDÉ ÉLECTROCHIMIQUE POUR LA RÉCUPÉRATION DE VALEURS DE FER MÉTALLIQUE ET DE CHLORE À PARTIR DE DÉCHETS DE CHLORURES MÉTALLIQUES RICHES EN FER

Publication

EP 2064369 A1 20090603 (EN)

Application

EP 07701657 A 20070109

Priority

  • CA 2007000026 W 20070109
  • CA 2560407 A 20060921
  • US 82645306 P 20060921

Abstract (en)

[origin: WO2008034212A1] An electrochemical process for the concurrent recovery of iron metal and chlorine gas from an iron-rich metal chloride solution, comprising electrolysing the iron-rich metal chloride solution in an electrolyser comprising a cathodic compartment equipped with a cathode having a hydrogen overpotential higher than that of iron and containing a catholyte having a pH below about 2, an anodic compartment equipped with an anode and containing an anolyte, and a separator allowing for anion passage, the electrolysing step comprising circulating the iron-rich metal chloride solution in a non-anodic compartment of the electrolyser, thereby causing iron to be electrodeposited at the cathode and chlorine gas to evolve at the anode, and leaving an iron-depleted solution. The iron-rich metal chloride solution may originate from carbo-chlorination wastes, spent acid leaching liquors or pickling liquors.

IPC 8 full level

C25C 1/06 (2006.01); C25B 1/26 (2006.01)

CPC (source: EP)

C25B 1/26 (2013.01); C25C 1/06 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

DOCDB simple family (publication)

WO 2008034212 A1 20080327; AU 2007299519 A1 20080327; AU 2007299519 B2 20111215; CA 2663652 A1 20080327; CA 2663652 C 20100706; EP 2064369 A1 20090603; EP 2064369 A4 20091104; EP 2064369 B1 20110330; JP 2010504423 A 20100212; US 2010044243 A1 20100225; ZA 200900950 B 20091230

DOCDB simple family (application)

CA 2007000026 W 20070109; AU 2007299519 A 20070109; CA 2663652 A 20070109; EP 07701657 A 20070109; JP 2009528559 A 20070109; US 44236707 A 20070109; ZA 200900950 A 20090210