Process for mfg. premelting anode aluminium electrolytic tank

Abstract

The invention discloses a producing method of beforehand bake anticathode aluminum electrobath. It includes shell of beforehand bake anticathode aluminum electrobath, lateral carbon, heat preservation brick, cathode steel stick, cathode carbon and carbon border part paste with inclined plane. It extends the two terminals of the cathode carbon to be set at the bottom of the inclined plane of the border part paste and makes the inclined plane of the border part paste cover the two terminals of the cathode carbon. There are slots at the two terminals of the cathode carbon. The invention can effectively prevent the aluminium or electrolyte from leaking when and after the electrobath is powered on.

Description

Technical field: [0001] The invention relates to a method for manufacturing a prebaked anode aluminum electrolytic cell, belonging to the technical field of aluminum electrolytic cells. Background technique: [0002] At present, in the prebaked anode aluminum electrolytic cell in the prior art, when building the furnace, a paste around the carbon edge with a bevel is usually added between the cathode carbon block and the side carbon block to fix it, and the cathode carbon block and the side carbon block are The joints pasted around the side are set outside the inclined plane pasted around the side, that is, the joints between the cathode carbon block and the pasted around the side are set outside the so-called artificial legs. The aluminum electrolytic produced by this method During the roasting start-up of the tank, when the temperature rises from normal temperature to 900-1000°C, due to the difference in thermal expansion coefficient between the cathode carbon block and th...

AI Technical Summary

Problems solved by technology

[0002] At present, in the prebaked anode aluminum electrolytic cell in the prior art, when building the furnace, a paste around the carbon edge with a bevel is usually added between the cathode carbon block and the side carbon block to fix it, and the cathode carbon block and the side carbon block are The joints pasted around the side are set outside the inclined plane pasted around the side, that is, the joints between the cathode carbon block and the pasted around the side are set outside the so-called artificial legs. The aluminum electrolytic produced by this method During the roasting start-up of the tank, when the temperature rises from normal temperature to 900-1000°C, due to the difference in thermal expansion coefficient between the cathode carbon block and the paste around the edge, after the roasting is completed, there will be a line between the paste around the edge and the cathode carbon block. Gap, when starting, aluminum water or electrolyte often seeps into the tank lining along this gap and seeps out of the tank, causing early damage to the aluminum electrolytic cell and reducing the life of the electrolytic cell lining

Therefore, when the prebaked anode aluminum electrolytic cell produced by the existing prebaked anode aluminum electrolytic cell is used, its use effect is still not ideal.

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