Dry cell start-up of an electrolytic cell for aluminum production
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United States of America Patent
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Apr 25, 2017
Grant Date -
Mar 20, 2014
app pub date -
May 18, 2012
filing date -
May 25, 2011
priority date (Note) -
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Abstract
A method for starting up an electrolytic cell (20) for aluminum production having a cathode block (26) with an upper surface (32), the method comprising: disposing contact resistance material (46) over the upper surface (32) of the cathode block (26); lowering a plurality of anodes (28) to abut the contact resistance material (46); filling the electrolytic cell (20) and covering the anodes (28) with solid electrolyte material (72) comprising crushed electrolytic bath material, cryolite, or mixtures thereof; delivering electrical current to the anodes (28) to at least partially melt the solid electrolyte material (72) and raising the anodes (28) when a predetermined depth of molten electrolyte material has been reached.
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