Electrode for electrolytic refining or electrowinning and...

C - Chemistry – Metallurgy – 25 – C

Patent

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Details

C25C 7/02 (2006.01)

Patent

CA 2304676

The invention relates to an electrode for electrolytic refining or electrowinning, said electrode (1, 21, 41) being provided with a hanger bar (3, 23, 43) attached to the edge of one plate-like mother plate, and the edges (4, 5, 6; 24, 30, 31; 44, 49, 50) of said electrode, apart from the edge to which the hanger bar is fastened, being protected with an edge strip (11, 12, 13; 29, 32, 33; 48, 51, 52) made of some insulating material, in which electrode at least part of the edge strips is at least partly placed in a groove (7, 25, 45) made in the electrode edge. According to the invention, at least in one electrode edge (4, 5, 6; 24, 30, 31; 44, 49, 50), there is formed a groove (7, 25, 45) for the electrode edge strip (11, 12, 13; 29, 32, 33; 48, 51, 52) made of some insulating material; the front end of said groove, located at the electrode edge (4, 5, 6; 24, 30 31; 44, 49, 50), being essentially equal in width with the rear end (10, 28, 53) of the groove placed inside the electrode. The invention also relates to a method for manufacturing the electrode (1, 21, 41).

L'invention concerne une électrode pour affinage électrolytique ou extraction électrolytique, ladite électrode (1, 21, 41) étant pourvue d'une tringle (3, 23, 43) fixée à la tranche d'une plaque mère. Les tranches (4, 5, 6; 24, 30, 31; 44, 49, 50) de ladite électrode espacées de la tranche à laquelle la tringle est fixée sont protégées par un couvre-chant (11, 12, 13; 29, 32, 33; 48, 51, 52) constitué d'un matériau isolant. Au moins une partie des couvre-chants est au moins partiellement placée dans une rainure (7, 25, 45) formée dans la tranche de l'électrode. Selon l'invention, une rainure (7, 25, 45) est ménagée au moins dans une tranche d'électrode (4, 5, 6; 24, 30, 31; 44, 49, 50). Cette rainure permet de recevoir le couvre-chant (11, 12, 13; 29, 32, 33; 48, 51, 52) constitué d'un matériau isolant. L'extrémité frontale de ladite rainure, qui se trouve au niveau de la tranche (4, 5, 6; 24, 30, 31; 44, 49, 50) de l'électrode, est essentiellement égale en largeur à l'extrémité arrière (10, 28, 53) de la rainure placée à l'intérieur de l'électrode. L'invention concerne aussi un procédé de fabrication de l'électrode (1, 21, 41).

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