Method featuring a non-consumable anode for the electrowinning o

Details Method featuring a non-consumable anode for the electrowinning o Method featuring a non-consumable anode for the electrowinning o

1999-06-24

2000-03-21

Gorgos, Kathryn

Electrolysis: processes, compositions used therein, and methods

Electrolytic synthesis

Utilizing fused bath

C25C 306

Patent

active

060398620

ABSTRACT:
The present invention includes a conceptually new process to produce primary aluminum through the modification/adaptation for the HHC of a non-consumable anode of the type used for solid oxide fuel cells (SOFC) with the provision to electrochemically utilize/burn a fuel. The present invention is believed to work most effectively when the dissolution and fragility problems of the zirconia-base solid electrolyte can be sufficiently alleviated, e.g., through the use of a lower electrolysis temperature, through the use of melt additives to restrict dissolution, and/or through modem methods for the fabrication/deposition of the electrolyte onto an appropriate internal metal anode. The present invention thus achieves, through the use of the solid-electrolyte-coated anode, the long-sought non-consumable anode. The electrochemical oxidation, inside the NCA in accordance with the present invention, of an inexpensive fuel, e.g., reformed natural gas (as is done in the modern SOFC), constitutes a significantly more favorable anodic oxidation reaction than the evolution of pure oxygen disclosed by Marincek.

REFERENCES:
patent: 3960678 (1976-06-01), Alder
patent: 3974046 (1976-08-01), Alder
patent: 4385970 (1983-05-01), Skopp et al.
patent: 4468298 (1984-08-01), Byrne et al.
patent: 4468300 (1984-08-01), Byrne et al.
patent: 5279715 (1994-01-01), La Camera et al.
patent: 5725744 (1998-03-01), De Nora et al.

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