PROCEDURE FOR AUTOMATIC ADJUSTMENT OF ALUMINUM ELECTROLYZER Russian patent published in 2000 - IPC

FIELD: automation of process of electrolysis of aluminum. SUBSTANCE: function U_np is analyzed per each cycle between treatments under mode of automatic control. Minimal value of function found in cycle is chosen as setting. Deviations from setting are compensated, all displacements of anode are registered, function U_np is restored by all movements of anode, value of function is brought to display on which technological parameters and all operations related to control are recorded. Intensity and direction of movement of anode are used to evaluate concentration state of electrolyzer: in case of predominantly downward movement electrolyzer has low value C_r, in case of predominantly upward movement electrolyzer has high value C_r, in case of rare downward movement electrolyzer has normal value C_r. Results of evaluation are used to give recommendation on choice of zone controlling movement of anode and on selection of supply mode. EFFECT: increased technical and economic indices of procedure thanks to efficiency of control over energy condition. 5 dwg, 1 tbl