MONITORING METHOD OF PROCESS PARAMETERS OF ELECTROLYTE OF ALUMINIUM ELECTROLYSIS UNIT Russian patent published in 2012 - IPC C25C3/20 

FIELD: metallurgy.

SUBSTANCE: method involves measurement of current strength and calculation of process parameters; at that, measurement of current strength value I_e and electrolyte level l_e is performed by means of insulated puncheon of automated aluminium silicate feed system, as process parameters there calculated is electric resistance of electrolyte layer R_e and cryolite ratio, measurements of direct current values are performed at maximum current amplitudes, measurements of electric resistance of electrolyte layer are performed at constant electrolyte level l_e and constant voltage value equal to 24 V, values of electric resistance of electrolyte layer are calibrated in compliance with current value of cryolite ratio of electrolyte, calculated values of cryolite ratio are calibrated with values of standard electrolyte specimens so that calibration coefficient considering the content of fluorides is obtained.

EFFECT: improving monitoring accuracy and efficiency of change in the electrolyte composition of aluminium electrolysis unit.

2 cl, 2 dwg, 1 tbl