CATHODE BAR WITH METALLIC FOOTING FOR HALL-HEROULT TYPE ELECTROLYTIC CELLS

摘要

specific disclosure.for the extraction of the cathodic bara tank for the production of aluminum by electrolysisaccording to the hall heroult process, embedded in at least onegroove open to the base of each of the carbon blocksforming the cathode of the electrolytic cell. the bara flange extends from a cathode metal.sensitivity based electric carbon blocks of at least20% of the total surface area of the base. the sole isformed by a sheet metal of a thickness at leastup to 4 mm, and preferably at least equal to 10 mm.welded to the bar before the establishment of the cathode blockthe carbon in the steel. in order to prevent seepagein the electrolyte in the cathode space, lowerthe tread is placed and superposed and connectedin electrical contact with a metal screen, thick.continuous, disposed on the upper part of the insulating liningthermal.