MATHEMATICAL MODEL FOR CONTINUOUS DETECTION OF CURRENT EFFICIENCY IN ALUMINUM PRODUCTION
(1.Institute ofFuzzy Control, North China University of Technology,Beijing100041, P. R. China
2.Department ofNonferrous Metallurgy, Central South University of Technology,Changsha 410083, P. R. China)
2.Department ofNonferrous Metallurgy, Central South University of Technology,Changsha 410083, P. R. China)
Abstract: A mathematical model called“three parameter model”which can be used to detect current efficiency continuously in aluminium production has been developed. The model includes: (1) calculation of physical fields in the cell; (2) calculation of temperature, anode-cathode distance, Al-electrolyte interfacial tension and aluminium concentration factor; (3) comprehensive mechanism model of aluminium loss. The current efficiency and current distribution of 160kA prebaked cells were measured. Experimental results show the“three parameter model”is valuable in aluminium electrolysis.
Key words: current efficiency mathematical model aluminium electrolysis