Reynolds Metals Company

Curtis J McMinn

Nolan E Richards

Thomas J Johnston

John T Willett

Howard I Kaplan

Jerry H Bryce

Alton T Tabereaux

Jan M Pottinger

Alton Theodore Tabereaux, Jr

An electrical connector for use in an aluminum reduction cell is disclosed. The portion of the connector extending into the carbon anode block is formed from a steel alloy having at least about 0.8% by weight chromium and having electrical resistivity characteristics close to those of mild steel at the cell operating temperatures of the block.

Aluminum reduction cell carbon anode power connector

This invention concerns cathodes for alumina reduction cells, particularly drained cathodes, which present a refractory surface for contacting molten aluminum on the cell floor. This invention also concerns materials for constructing such cathodes. The cathodes described comprise a carbonaceous bed, preferably a graphite bed, and a composite tile. This tile is characterized by a layer of a refractory hard metal (RHM) material bonded to a base layer of a graphitic material, where the RHM layer comprises a hot pressed mixture of titanium diboride and aluminum nitride powders. The tile is further characterized by the bond between the RHM layer and the graphitic base layer, such bond having been produced simultaneously as the RHM layer is formed by hot pressing the mixture of titanium diboride and aluminum nitride powders directly against the graphitic base layer. The graphitic base layer is in turn bonded to the carbonaceous bed by means of a carbonaceous cement, and the RHM layer thereby provides a refractory surface for contacting molten aluminum.

Cathodes for alumina reduction cells

Refractory surfaces for alumina reduction cell cathodes and methods for

A method of achieving improved operation of aluminum reduction cells being used to produce aluminum-silicon alloys, and related aspects of introducing silica and alumina to supply the requirements thereof to obtain an alloy of the desired silicon content.

Production of aluminum-silicon alloys in an electrolytic cell

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Florence, AL, United States of America

Curtis J McMinn