Method for the manufacture of insoluble lead anodes, used in electrowinning or electro-refining processes of high purity metals

Abstract

A method for the manufacture of insoluble lead anodes, with low segregation of the constituent elements of the anodic alloy for the electrowinning of metals, free of buckling, used in electrolytic processes, which comprises: Obtaining a continuous plate (4) of lead or lead alloy 10 to 30 mm thick by 900 to 1,100 mm wide by means of a continuous casting process; Cut the continuous plate (4) according to a determined length obtaining a pre-plate (6) that will give the length of one or more plates of the anode (8); Roll the lead or lead alloy pre-plate (6) using a cold rolling mill (7) to a thickness of 6 to 12 mm, keeping the cold rolling temperature of the pre-plate under 60° C., obtaining the anode plate(s) (8); Remove the anode plate (8) from the rolling mill (7); Weld (12) a copper bar (10) to the upper end of the anode plate (11).

Dependencies are inferred from the claim text.