FIELD: repair of aluminum electrolyzer hearth by mechanical filling of failed areas with repair mixture.
SUBSTANCE: proposed method consists in filling failed areas of carbon-containing lining of cathode units with molded repair mixture to reduce intensity of failure of lining by components of melt and to exclude admixtures in aluminum; repair mixture is prepared by fusion of aluminum fluoride and calcium fluoride at the following ratio of components, mass-%: aluminum fluoride, 35-40; calcium fluoride, 60-65. In molding the repair mixture, use is made of molten aluminum. Size of repair mixture is 30-60 mm. Molded repair mixture is fitted with aluminum bar whose working length is equal to distance between bead of cathode unit and area of failure.
EFFECT: enhanced efficiency.
4 cl, 1 tbl, 1 ex
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|
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|
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|
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|
RU2180367C2 |
