Operational Problems of a Graphitized Cathodic Block Lining in Contemporary Aluminum Electrolyzers

A carbon lining in the form of cathode blocks with a different graphite content under electrolyzer conditions is subjected to mechanical wear as a result of rapid melt movement, and this is more significant than for amorphous carbon blocks. The problem of operating a graphitized cathode block lining...

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Bibliographic Details
Published in:Refractories and industrial ceramics 2017-07, Vol.58 (2), p.126-129
Main Authors: Saitov, A. V., Bazhin, V. Yu, Feshchenko, R. Yu
Format: Article
Language:English
Subjects:
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Electrolysis (Chemistry)
Glass
Graphite
Materials Science
Natural Materials
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Summary:A carbon lining in the form of cathode blocks with a different graphite content under electrolyzer conditions is subjected to mechanical wear as a result of rapid melt movement, and this is more significant than for amorphous carbon blocks. The problem of operating a graphitized cathode block lining is discussed. After performing an autopsy for cathode units the condition of some aluminum electrolyzer lining sections with blocks having a different degree of graphitization is studied. Reasons are examined and determined for premature electrolyzer breakdown with graphite-containing hearth blocks. Results are provided for temperature measurement of high-power electrolyzer cathode units.
ISSN:1083-4877
1573-9139
DOI:10.1007/s11148-017-0069-0