Anomalies in the production regime of industrial aluminum electrolyzers, usually called technological failures or production-regime anomalies, are associated with considerable losses of productivity, as well as losses of electricity and reagents. Automatic detection and prevention of the development of technological failures can be most efficient in modern APCMS for electrolytic production of aluminum.Development of technological failures at the initial stages is usually difficult to detect from visual signs. On the other hand, correction of anomalies at these stages requires the least labor involvement and a minimum amount of other resources.The development of technological failures in operation of aluminum electrolyzers from the first appearance of instabilities to an emergency situation occurs in four stages. In many cases, the type of an anomaly is determined by the sign of electrolyte's temperature deviation from the norm (overheating-underheating).To ensure automatic control of the development of technological failures in operation of aluminum electrolyzers at early stages of their development, it is sufficient to control a limited number of process parameters, in particular, of the temperature of electrolyte overheating relative to its melting temperature.In the absence of a technical possibility to control the overheating temperature and other parameters characterizing the state of the electrolyte, one should use indirect parameters allowing to reliable distinguish between electrolyzers operating in a stable regime and those showing deviations of production - regime parameters from their optimal values.
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