Cathode element for use in an electrolytic cell intended for production of aluminum
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United States of America Patent
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Nov 17, 2009
Grant Date -
Oct 6, 2005
app pub date -
Apr 1, 2005
filing date -
Apr 2, 2004
priority date (Note) -
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Abstract
This invention relates to a cathode element for use in a pot of an electrolytic cell intended for production of aluminum. The cathode element comprises a cathode block and a steel connection bar. The connection bar includes at least one metal insert, whose electrical conductivity is greater than the electrical conductivity of the said steel. The presence of an insert according to the invention can simultaneously result in a very large drop in the global cathode voltage and a very strong reduction in the current density at the head of the block.
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