Method for lining a cathode of a reduction cell for production of primary aluminum
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United States of America Patent
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Mar 16, 2021
Grant Date -
Feb 14, 2019
app pub date -
Dec 30, 2016
filing date -
Feb 9, 2016
priority date (Note) -
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Abstract
The present invention relates to nonferrous metallurgy, in particular to the process equipment for electrolytic production of primary aluminum, namely to methods for lining cathode assemblies of reduction cells. A method for lining a cathode of a reduction cell for production of aluminum includes filling a cathode device shell with a thermal insulation layer and leveling said layer; filling, leveling and compacting a refractory layer; installing bottom and side blocks followed by sealing joints therebetween with a cold ramming paste. Prior to filling a shell bottom with the thermal insulation layer, a layer of fine carbonized particles is formed. The inventive method for lining a cathode assembly of a reduction cell for production of primary aluminum allows to reduce the cost of lining materials and energy consumption for reduction cell operation by means of improved heat resistance of a base and to increase the service life of reduction cells.
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