CATHODE STRUCTURE, ALUMINUM ELECTROLYSIS CELL, AND METHOD FOR LOWERING HORIZONTAL CURRENT IN ALUMINUM LIQUID

摘要

A cathode structure of an aluminum electrolytic cell, wherein the section ofthe cathode steelbar adjacent to the end portion of the cathode carbon block in its lengthwisedirection is dividedfrom top to bottom by partition gap(s) into at least two portions including anupper portion in aheight direction of the cathode steel bar, the section of the cathode steelbar which is in a middleportion of the cathode carbon block and not divided is connected to thecathode carbon block bytotally using a conductor, the upper portion of the cathode steel bar adjacentto the end portion ofthe cathode carbon block is connected to the cathode carbon block by using theconductor, the otherportions below the upper portion are insulated from the cathode carbon blockby using an insulator,and the partition gap is filled with a partition gap insulating material. Analuminum electrolytic cellincluding the above-mentioned cathode structure and a process for reducinghorizontal electriccurrent in the liquid aluminum in the aluminum electrolytic cell are alsodisclosed. The presentinvention substantially reduces the horizontal electric current in the liquidaluminum, makes thecathode electric current more uniformly distributed, improves the stability ofthe electrolytic cell,prolongs the service lifetime of the electrolytic cell, effectively reducesenergy consumption ofproducing aluminum per ton and exhibits a remarkable energy-saving effect.