Improved electrowinning anode and method of making such anode

Details Improved electrowinning anode and method of making such anode Improved electrowinning anode and method of making such anode

C - Chemistry, Metallurgy

25

C

C25C 7/02 (2006.01) C25D 3/34 (2006.01) C25C 1/08 (2006.01) C25C 1/12 (2006.01) C25C 1/16 (2006.01)

Patent

CA 2348491

In an electrowinning anode in which a lead anode sheet (11) is tightly fitted to a copper busbar (12), the anode sheet is additionally joined to the busbar by pinning (17) to prevent damage to the joint. A lead coating (18) is electrodeposited onto the busbar, pin and the soldered joint to provide a complete metallurgical seal and good resistance to acid corrosion.

L'invention concerne une anode d'extraction électrolytique comprenant une feuille (11) d'anode en plomb étroitement ajustée sur une barre omnibus (12) en cuivre, la feuille d'anode en plomb étant en outre fixée par des chevilles (17) sur la barre omnibus afin de prévenir une détérioration du joint. Un revêtement de plomb (18) est déposé par électrolyse sur la barre omnibus, les chevilles et le joint soudé afin de réaliser un scellement métallurgique complet et d'assurer une bonne résistance à la corrosion par l'acide.

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