Method and structure for lowering contact voltage drop between aluminum cell anode steel claw and carbon block

Abstract

The invention discloses method and structure for lowering contact voltage drop between an aluminum cell anode steel claw and a carbon block. The method comprises the following steps: after the casting an iron ring of an anode carbon bowl with phosphorous cast iron, an aluminum liquid is poured onto the iron ring, so that the aluminum liquid penetrates into the gap between the iron ring and the carbon bowl, and the liquid level of the cast iron is 4-6mm lower than the edge of the carbon bowl. The structure comprises an anode carbon block (1), a steel claw (2), an aluminum guide rod (3), an aluminum steel explosive welding sheet (4) and a cast iron ring piece (5), wherein an aluminum ring piece (6) is arranged in the cylindrical carbon bowl of the anode carbon block and the cast iron ring piece (5). The aluminum ring piece (6) is 4-6mm thick. The method and structure of the invention can effectively lower the voltage drop of the steel carbon, and solve the problem of poor contact between the iron ring and the carbon bowl.

Description

technical field [0001] The invention relates to a method and structure for reducing the steel-carbon contact voltage drop of an anode steel claw of an aluminum electrolytic cell. Background technique [0002] At present, there are ~20 to 48 anodes for each electrolytic cell with prebaked anodes. See figure 1 , figure 2 . Each anode is followed by an aluminum guide rod 3, an aluminum-steel explosion welding piece 4, a steel claw 2, and an anode carbon block 1 from top to bottom. The steel claw has a steel crossbeam to connect 3 or 4 round claw heads, and the claw head is inserted in the cylindrical charcoal bowl of the carbon block, and the cast iron ring 5 is connected by casting cast iron containing phosphorous between the claw head and the carbon block. [0003] The diameter of the round claw head of the steel claw is generally about 14cm, and the thickness of the annular seam between the carbon bowl of the carbon block and the claw head is about 15mm. This annular s...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and mechanism for reducing the contact voltage drop between the anode steel claw of the aluminum electrolytic cell and the carbon block, so as to solve the gap between the claw head and the carbon bowl in the prior art, and the gap causes contact Bad, increase contact resistance, large voltage drop, etc.

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