Study of the interconnection of aluminum electrolyzer life with corrosion of its casing

Study of the interconnection of aluminum electrolyzer life with corrosion of its casing It is confirmed that an aluminum electrolyzer casing is subject to electrochemical corrosion. It is established that on reaction of electrolyzer associated gaseous products with the electrolyzer casing there is formation of fluorides of bi- and trivalent iron, and also iron fluorides of non-stoichiometric composition. It is shown that the fluoride layer formed does not protect the casing surface from further corrosion. In order to protect the electrolyzer casing it is necessary to fasten a refractory barrier layer. More reliable heat insulation should be used in order to maintain the optimum casing heating temperature. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Study of the interconnection of aluminum electrolyzer life with corrosion of its casing

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Publisher
Springer US
Copyright
Copyright © 2009 by Springer Science+Business Media, Inc.
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1007/s11148-009-9142-7
Publisher site
See Article on Publisher Site

Abstract

It is confirmed that an aluminum electrolyzer casing is subject to electrochemical corrosion. It is established that on reaction of electrolyzer associated gaseous products with the electrolyzer casing there is formation of fluorides of bi- and trivalent iron, and also iron fluorides of non-stoichiometric composition. It is shown that the fluoride layer formed does not protect the casing surface from further corrosion. In order to protect the electrolyzer casing it is necessary to fasten a refractory barrier layer. More reliable heat insulation should be used in order to maintain the optimum casing heating temperature.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Jul 14, 2009

References

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