Sensing and controlling resistance noise component in...

Details Sensing and controlling resistance noise component in... Sensing and controlling resistance noise component in...

C - Chemistry, Metallurgy

25

C

204/110, 204/46,

C25C 3/00 (2006.01) C25C 3/20 (2006.01) C25C 7/06 (2006.01)

Patent

CA 1050474

ABSTRACT OF THE DISCLOSURE This disclosure concerns the production of metal, in particular aluminum, by providing an electrolytic bath containing dissolved oxide of the metal to be produced in a reduction cell. A direct current flows through the bath and metal is collected on the bottom of the reduction cell. The invention includes a method and apparatus for determining the undesirable process generated noise component of the resistance in the reduction cell and, preferably, reducing or eliminating the noise component whenever it exceeds a given level. More particularly, a circuit arrangement is operatively arranged to sense the process generated noise component and produce an output signal whenever this component exceeds a given level indicating the existence of a noise level which is detrimental to efficient cell operation.

192693

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