Electrolysis: processes – compositions used therein – and methods – Electrolytic synthesis – Utilizing fused bath
Reexamination Certificate
2007-02-05
2010-10-26
Ryan, Patrick (Department: 1795)
Electrolysis: processes, compositions used therein, and methods
Electrolytic synthesis
Utilizing fused bath
C205S391000
Reexamination Certificate
active
07820027
ABSTRACT:
An electrolysis cell (10) contains a number of carbon anodes (12) having top, bottom and side surfaces, operating in molten electrolyte (17) in an aluminum electrolysis cell (10), where gas bubbles (28) are generated at the anode surfaces and where alumina particles (20) are added to the top of the molten electrolyte, where the carbon anodes (12) have at least two inward slots (21) passing through the carbon anode (12) along the longitudinal axis40of the carbon anode and also passing through only one front surface (25) of the carbon anode, where the height (32) of the slots (21) is from about 45% to 80% of the anodes thickness and the slotted front surfaces (25) are disposed toward the center of the electrolysis cell so that generated gas bubbles (28) are directed to the alumina particles.
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How to Obtain Open Feeder Holes by Installing Anodes with Tracks; Light Metals 1998 Bjorn Petter Moxnes, Bjorn Erik Aga and Jorn Hembre Skarr; pp. 247-255.
Barclay Ron D.
Bruggeman Jay N.
Hosler Robert B.
Tarcy Gary P.
Wang Xiangwen
Alcoa Inc.
Greenberg & Traurig, LLP
Leader William T
Ryan Patrick
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