Electrodes useful for molten salt electrolysis of aluminum...

Details Electrodes useful for molten salt electrolysis of aluminum... Electrodes useful for molten salt electrolysis of aluminum...

2006-11-28

2006-11-28

Bell, Bruce F (Department: 1746)

Chemistry: electrical and wave energy

Apparatus

Electrolytic

C252S511000, C264S029100, C264S105000, C423S460000, C205S386000

Reexamination Certificate

active

07141149

ABSTRACT:
The present invention provides a method of making a carbon electrode, suitable for use as an anode in an aluminum reduction cell, which comprises mixing an aggregate, comprising a mixture of particulate shot coke, and a particulate carbonaceous material other than shot coke with coal tar pitch or petroleum pitch or a combination of these pitches at an elevated temperature to form a paste wherein said aggregate comprises a combination of coarse, medium, and fine particles and said particulate shot coke may comprise a majority of said fine particles, and said paste comprises from about 80 to about 90%, by weight, of said aggregate and from about 10 to about 20%, by weight, of said pitch; forming said paste into a solid body; and baking said solid body at an elevated temperature to form said carbon electrode.

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Beck, Theodor R., “Electrolytic Production of Aluminum,” Electrochemistry Encyclopedia, Oct. 2001, Electrochemical Technology Corp.

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