METHOD FOR DETERMINING ELECTRIC PARAMETERS WHICH CHARACTERIZE THE STATE OF SUBELECTRODE SPACES OF BATH OF THREE-PHASE THREE-ELECTRODE ORE-THERMAL FURNACE WITH ARRANGEMENT OF ELECTRODES IN A LINE

摘要

FIELD: electrochemistry.;SUBSTANCE: invention relates to electrothermics and can be used for controlling electrical parameters, characterizing the state of subelectrode spaces of bath of three-phase three-electrode ore-thermal furnace with arrangement of electrodes in a line and star connected short circuit on electrodes. Result is achieved by the method for determining electric parameters, characterizing the state of subelectrode space of three-phase three-electrode ore-thermal furnace with arrangement of electrodes in a line and star connected short circuit on electrodes, in compliance with which a controllable power supply of measuring frequency is sequentially connected to each electrode; frequency being different from the working frequency of the power source of the furnace, for the combination of two electrodes “end-end”, “one of end-middle” the amplitude and EMF phases of their power supplies of measuring frequency are kept unchanged so that the their EMF phases differ from each other by 180 electrical degrees, changing the amplitude and EMF phase of power source of measuring frequency of the remaining electrode so, that the current value of measuring frequency in it becomes equal to zero, measuring the current in a pair of selected electrodes, actual power released in ”electrode-furnace hearth” sections at measuring frequency and the parameters characterizing the condition of subelectrode spaces, calculating the own potential difference coefficients of ”electrode-furnace hearth” sections of the bath for electrodes in accordance with formulas: where I_1i, P_1i, P_2i - current values in the primary power supply circuit of measuring frequency of one of the electrodes and actual power, released in ”electrode-furnace hearth” sections at measuring frequency for the combination of “end-end” electrodes; I_2i, P_3i, P_4i - current values in the primary power supply circuit of measuring frequency of “middle” electrode and actual power, released in ”electrode-furnace hearth” sections at measuring frequency for the combination of “one of end-middle” electrodes; w_t is the number of coils of the primary winding of an input device.;EFFECT: control of electric parameters.;1 cl, 3 dwg