Global Patent Index - EP 1049815 A1

EP 1049815 A1 20001108 - SURFACE COATED NON-CARBON METAL-BASED ANODES FOR ALUMINIUM PRODUCTION CELLS

Title (en)

SURFACE COATED NON-CARBON METAL-BASED ANODES FOR ALUMINIUM PRODUCTION CELLS

Title (de)

BESCHICHTETE KOHLENSTOFF-FREIE ANODEN AUF BASIS VON METALLEN ZUR ANWENDUNG IN ALUMINIUM-HERSTELLUNGSZELLEN

Title (fr)

ANODES METALLIQUES EXEMPTES DE CARBONE A REVETEMENT DE SURFACE POUR DES CELLULES ELECTROLYTIQUES DE PRODUCTION D'ALUMINIUM

Publication

EP 1049815 A1 20001108 (EN)

Application

EP 99900107 A 19990119

Priority

  • IB 9900079 W 19990119
  • IB 9800081 W 19980120
  • US 12620698 A 19980730
  • US 12635998 A 19980730

Abstract (en)

[origin: WO9936591A1] A non-carbon, metal-based, high temperature resistant, electrically conductive and electrochemically active anode of a cell for the production of aluminium has a metal-based oxidation-resistant substrate to which an adherent multi-layer coating is applied prior to its immersion into the electrolyte and start up of the electrolysis by connection to the positive current supply. The multi-layer coating is obtainable from one or more applied layers selected from: a liquid solution, a dispersion in a liquid or a paste, a suspension in a liquid or a paste, and a pasty or non-pasty slurry, and combinations thereof, with or without heat treatment between two consecutively applied layers. At least one layer of the multi-layer coating contains a polymeric and/or a colloidal carrier. The coating is after final heat treatment electrically conductive and has during operation in the cell an electrochemically active surface for the oxidation of oxygen ions present at the surface of the anode.

IPC 1-7

C25C 3/12; C25C 7/02

IPC 8 full level

C25C 3/12 (2006.01)

CPC (source: EP)

C25C 3/12 (2013.01)

Citation (search report)

See references of WO 9936591A1

Designated contracting state (EPC)

DE ES FR GB IT NL

DOCDB simple family (publication)

WO 9936591 A1 19990722; AU 1779599 A 19990802; AU 747906 B2 20020530; CA 2317595 A1 19990722; DE 69906697 D1 20030515; DE 69906697 T2 20040311; EP 1049815 A1 20001108; EP 1049815 B1 20030409; NO 20003704 D0 20000719; NO 20003704 L 20000719

DOCDB simple family (application)

IB 9900079 W 19990119; AU 1779599 A 19990119; CA 2317595 A 19990119; DE 69906697 T 19990119; EP 99900107 A 19990119; NO 20003704 A 20000719