Cathode for a fused salt reduction cell

Details Cathode for a fused salt reduction cell Cathode for a fused salt reduction cell

1983-11-09

1985-04-16

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 67, 204284, 204290R, 204293, 204294, C25C 308, C25C 702, C25B 1103, C25B 1112

Patent

active

045114498

ABSTRACT:
In a fused salt electrolytic cell used in the production of aluminum, a cathode having work faces which are wet by aluminum, are resistant to attack by the molten electrolyte and are electrically conductive, is made up of a bed of loose shaped pieces or bodies located in the molten electrolyte. The pieces or bodies are made of a plurality of composite material elements bonded together which sink in molten aluminum, the composite material elements comprise a fine granular or chip-shaped substrate material selected from the group consisting of carbon, graphite, anthracite, aluminum nitride, silicon carbide and mixtures thereof having a thin layer coating of a material selected from the group consisting of titanium diboride, titanium carbide, titanium nitride, zirconium diboride, zirconium carbide, zirconium nitride and mixtures thereof completely and densely covering the surface of the substrate wherein the spaces between the coated substrate composite materials when bonded together to form the bodies are at least partly filled with the coating substance.

REFERENCES:
patent: 4071420 (1978-01-01), Foster, Jr. et al.
patent: 4097567 (1978-06-01), Cebulak et al.
patent: 4308115 (1981-12-01), Foster, Jr. et al.
patent: 4338177 (1982-07-01), Withers et al.
patent: 4349427 (1982-09-01), Goodnow et al.
patent: 4396481 (1983-08-01), Pawlek et al.
patent: 4410403 (1983-10-01), Jacobs et al.
patent: 4439382 (1984-03-01), Joo et al.
patent: 4443313 (1984-04-01), Gesing et al.

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