A live repair method for electrolytic cell aluminum busbar in strong magnetic field environment

Abstract

The invention relates to the technical field of aluminum smelting, in particular to a method for repairing an electrolysis cell aluminum bus without power cut under a high-intensity magnetic field environment, and aims to overcome a plurality of defects in a process for repairing a bus burned down due to the leakage in the conventional aluminum electrolysis cell. The method comprises the following steps: cleaning a burned-down aluminum bus; perforating the center of an injured surface of the aluminum bus, and presetting a high-conductivity metal bar I in a hole; forming a positioning groove in the edge of the injured surface of the aluminum bus, and presetting a high-conductivity metal bar II in the positioning groove; mounting a repair mould at the burned aluminum bus; performing casting treatment on the injured surface to form a casting surface; connecting the combined edges of the casting surface and the injured surface through metal rivets; performing integral grinding and polishing treatment on the casting surface of the aluminum bus to obtain a repaired aluminum bus. The method has the advantages that the current guiding effect of the burned-down aluminum bus and the safety of series buses during production are guaranteed; the repair period is short, the operation is simple and convenient, and the conducting effect of the repaired aluminum bus is excellent. Therefore, the injured surface of the electrolysis cell aluminum bus can be repaired without power cut under a high-intensity magnetic field environment.

Description

technical field [0001] The invention relates to the technical field of aluminum smelting, in particular to a live repair method for an aluminum busbar of an electrolytic cell under a strong magnetic field environment. Background technique [0002] In the production process of aluminum electrolytic cells, sudden abnormalities often occur, such as leaks and damage to the busbar. If repairs are not carried out in time, the current of the damaged busbar will be too large and the heat will be generated, which will cause secondary damage to the busbar. In severe cases It will cause the entire aluminum electrolytic series to be paralyzed. In addition, due to the influence of the strong magnetic field at the electrolysis site, when repairing the burnt short-circuit busbar and confluence busbar of the electrolytic cell, the entire series must be repaired by welding after power failure. First, use mechanical tools such as angle grinder, straight Clean up the mills and electric brushe...

AI Technical Summary

Problems solved by technology

[0002] In the production process of aluminum electrolytic cells, sudden abnormalities often occur, such as leaks and damage to the busbar. If repairs are not carried out in time, the current of the damaged busbar will be too large and the heat will be generated, which will cause secondary damage to the busbar. In severe cases Will cause the entire aluminum electrolytic series to be paralyzed

In addition, due to the influence of the strong magnetic field at the electrolysis site, when repairing the burnt short-circuit busbar and confluence busbar of the electrolytic cell, the entire series must be repaired by welding after power failure. First, use mechanical tools such as angle grinder, straight Clean up the mills and electric brushes to reveal the true color of the cast aluminum, and then the non-ferrous welder uses a welding machine to weld the gaps one by one, layer by layer, and the gap is higher than the plane of the original busbar, and then uses an argon arc welding machine to melt the aluminum electrode or aluminum alloy. Welding wire, weld the surfacing part with the original bus bar, and the fitter then uses tools to smooth the surface to make it meet the technical requirements of the bus bar. The whole repair process requires multiple short-term power outages or long-term continuous power outages. The entire series of production has a great impact, which reduces the output of primary aluminum in normal production electrolyzers and greatly increases energy consumption; at the same time, the impact of power failure and power transmission on the series of normal production electrolyzers is relatively large, affecting the stable operation of normal production electrolyzers

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