Dry cell start-up of an electrolytic cell for aluminum production
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United States of America Patent
Stats
-
Apr 25, 2017
Grant Date -
Mar 20, 2014
app pub date -
May 18, 2012
filing date -
May 25, 2011
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
First Claim
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International Classification(s)
- 2012 Application Filing Year
- C25C Class
- 88 Applications Filed
- 73 Patents Issued To-Date
- 82.96 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C25C Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 25, 2028 |
