Method of pre-heating a stack for aluminium electrolysis production
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United States of America Patent
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Feb 3, 2009
Grant Date -
Jun 22, 2006
app pub date -
Sep 18, 2003
filing date -
Sep 20, 2002
priority date (Note) -
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Abstract
The present invention relates to a method of pre-heating a pot provided with anodes and cathodes for the production of aluminium by electrolysis, said method including a first step, prior to the pot being supplied with current, during which a layer of a granular conductive material is deposited then crushed between the anodes and the cathodes, characterized in that the granular conductive material is graphite-based and in that the layer of granular conductive material only extends, after crushing, over a part of a lower surface of each anode and takes the form of contact blocks.
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