A method of controlling an aluminum cell with variable...

Details A method of controlling an aluminum cell with variable... A method of controlling an aluminum cell with variable...

C - Chemistry, Metallurgy

25

C

C25C 3/20 (2006.01)

Patent

CA 2506270

A method of controlling an aluminum reduction cell including the following steps: maintaining alumina concentration within preset limits by alternating base, underfeed and overfeed modes; measuring cell voltage and potline amperage; calculating current normalized voltage value and a rate of changing thereof in time; comparing the calculated values of the normalized voltage with preset values thereof and correcting anode-cathode distance when passing from the base mode to the overfeed or underfeed modes; and measuring a number of alumina feed doses in the underfeed mode and overfeed mode over a time period sufficient for the alumina to dissolve.

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