CONTROLLING AN ALUMINUM ELECTROLYZER BY ESTIMATING ITS CONDITION

摘要

The economics of producing aluminum by electrolysis from an electrolyte melt in electrolyzers depends -primarily - on 3 technological indices: the melt temperature 6, the concentration of alumina C dissolved in it, and the interpolar distance /. The goal of controlling an aluminum electrolyzer is to stabilize these indices along with their optimum values [1]. The electrolyzer control unit has 2 loosely interconnected control channels (see Figure): control over melt temperatures by varying interpolar distances DELTA I (channel DELTA I -> I -> R -> theta, where R - is electrolyzer resistance) and controls alumina concentration, affecting the consumption of charged alumina G (channel G -> C).