The invention relates to the technical field of equipment control, in particular to a
rare earth electrolysis feeding control method and
system based on the
fluorine ion quantity, and the method mainly comprises the steps that the
fluorine gas concentration in the
electrolysis process in the current
collection period is obtained, and the current
fluorine ion detection concentration is obtained through the fluorine
gas concentration; and constructing a PID control model, and outputting a
control signal for the feeding equipment according to the PID control model based on the fluorine
ion concentration. According to the scheme, the fluorine ion or fluorine-containing gas emission amount is collected, the fluorine-containing gas or fluorine
ion emission amount is relatively stable during normal
electrolysis, and once material shortage and fluorine-containing gas or fluorine
ion emission data are abnormal and obvious, abnormal electrolysis can be judged in time, response can be made in time (the starting point is different from that of the disclosed feeding control technology), and the feeding control accuracy is improved. And data are fed back in time and output of the charging
machine is controlled. According to the method, whether material shortage exists in current electrolysis or not is judged, the feeding amount is accurately controlled through fluorine data, furnace
caking caused by excessive material feeding due to the fact that materials exist in a furnace is avoided, and
rare earth fluoride can be prevented from participating in electrolysis due to material shortage in the furnace.