EP 1050607 A2 20001108 - Equipment for the electrolytic deposition of gold or gold alloys
Title (en)
Equipment for the electrolytic deposition of gold or gold alloys
Title (de)
Einrichtung für die elektrolytische Abscheidung von Gold oder Goldlegierungen
Title (fr)
Dispositif pour le dépôt électrolytique d'or et d'alliages d'or
Publication
Application
Priority
ES 9900931 A 19990506
Abstract (en)
Replenishing of gold is carried out by continuous recirculation of the cyanide-alkaline electrolyte between the electrodeposition electrolytic cell (1) and an auxiliary electrolytic cell (2) in whose anode (21) are placed gold sheets (22) so that free potassium cyanide formed in the electrolyte as a consequence of electrodeposition process, combines with gold in said auxiliary electrolytic cell (2) to produce the cyano-complex (K(Au(CN)2). The equipment comprises an electrodeposition electrolytic cell (1) and an auxiliary electrolytic cell (2) that allows the continuous replenishing of gold. The features of the invention allow to produce an electroplate of uniform thickness and composition, keeping the costs, especially those of replenishing gold, at a low level. <IMAGE>
IPC 1-7
IPC 8 full level
C25D 17/06 (2006.01); C25D 17/12 (2006.01); C25D 21/12 (2006.01); C25D 21/14 (2006.01)
CPC (source: EP)
C25D 17/06 (2013.01); C25D 17/12 (2013.01); C25D 21/12 (2013.01); C25D 21/14 (2013.01); C25D 3/48 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1050607 A2 20001108; EP 1050607 A3 20021113; EP 1050607 B1 20051005; AT E305988 T1 20051015; DE 60022940 D1 20060216; ES 2166660 A1 20020416; ES 2166660 B1 20030216; ES 2250092 T3 20060416
DOCDB simple family (application)
EP 00500086 A 20000503; AT 00500086 T 20000503; DE 60022940 T 20000503; ES 00500086 T 20000503; ES 9900931 A 19990506