Global Patent Index - EP 1049817 A1

EP 1049817 A1 20001108 - SLURRY FOR COATING NON-CARBON METAL-BASED ANODES FOR ALUMINIUM PRODUCTION CELLS

Title (en)

SLURRY FOR COATING NON-CARBON METAL-BASED ANODES FOR ALUMINIUM PRODUCTION CELLS

Title (de)

AUFSCHLÄMMUNG ZUM BESCHICHTEN VON KOHLENSTOFFFREIEN ANODEN AUF METALLBASIS FÜR ZELLEN ZUR ALUMINIUMHERSTELLUNG

Title (fr)

COULIS DE REVETEMENT D'ANODES METALLIQUES EXEMPTES DE CARBONE POUR CELLULES DE PRODUCTION D'ALUMINIUM

Publication

EP 1049817 A1 20001108 (EN)

Application

EP 99900109 A 19990119

Priority

  • IB 9900081 W 19990119
  • IB 9800081 W 19980120
  • US 12635998 A 19980730

Abstract (en)

[origin: WO9936593A1] A method of coating an electronically conductive and heat resistant substrate of an anode of a cell for the electrowinning of metals, in particular a cell for the electrowinning of aluminium, to protect and make the surface of the anode active for the oxidation of the oxygen ions present in the electrolyte. The method comprises applying onto the substrate a slurry comprising at least one oxide or oxide precursor as a non-dispersed but suspended particulate in a colloidal and/or inorganic polymeric carrier. The applied-slurry is then solidified and made adherent to the substrate upon heat treatment to form an adherent, protective, predominantly oxide-containing coating. The colloidal and/or inorganic polymeric carrier may comprise at least one of alumina, ceria, lithia, magnesia, silica, thoria, yttria, zirconia, tin oxide and zinc oxide. The oxide of the coating may be a chromite or a ferrite, such as a ferrite selected from cobalt, copper, manganese, nickel and zinc.

IPC 1-7

C25C 3/12; C25C 7/02

IPC 8 full level

C25C 3/12 (2006.01); C25C 7/02 (2006.01)

CPC (source: EP)

C25C 3/12 (2013.01); C25C 7/025 (2013.01)

Citation (search report)

See references of WO 9936593A1

Designated contracting state (EPC)

DE ES FR GB IT NL

DOCDB simple family (publication)

WO 9936593 A1 19990722; AU 1779799 A 19990802; AU 747903 B2 20020530; CA 2317802 A1 19990722; CA 2317802 C 20080401; DE 69933854 D1 20061214; DE 69933854 T2 20070531; EP 1049817 A1 20001108; EP 1049817 B1 20061102; ES 2274613 T3 20070516; NO 20003702 D0 20000719; NO 20003702 L 20000719; NO 326358 B1 20081117

DOCDB simple family (application)

IB 9900081 W 19990119; AU 1779799 A 19990119; CA 2317802 A 19990119; DE 69933854 T 19990119; EP 99900109 A 19990119; ES 99900109 T 19990119; NO 20003702 A 20000719