Early warning method of anode effect in aluminum electrolytic cell

Abstract

The invention relates to an aluminum electrolysis bath anode effect early warning method. The aluminum electrolysis bath anode effect early warning method comprises an electrolysis bath, the electrolysis bath comprises a bath body, a bath cover plate is buckled on the bath body, and an anode guide rod penetrates through the bath cover plate; one end, inside the bath body, of the anode guide rod isconnected with an anode carbon block, and the other end of the anode guide rod is connected with a cross-beam bus; and a displacement sensor is arranged on the bath cover plate, the displacement sensor is in signal connection with an early warning controller so as to transmit displacement signals of the bath cover plate in the electrolysis process to the early warning controller, the early warning controller judges whether an anode effect is to occur or not according to the displacement signals, the early warning controller is connected with a warning device and a bath controller so as to output corresponding command signals to the warning device and the bath controller when the anode effect is judged to occur. According to the aluminum electrolysis bath anode effect early warning method,the occurrence of the anode effect can be indirectly forecasted by detecting the displacement information of the bath cover plate, forecasting and early processing can be carried out, and the forecasting and judging are simple, reliable and timely, so that more time is saved for inhibiting the anode effect, the occurrence of the anode effect is reduced, the consumption and the emission are reduced.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolysis production, and in particular relates to an early warning method for anode effect of an aluminum electrolytic cell. Background technique [0002] Large-scale aluminum electrolytic cells use an automatic control system for production management. Controlling the concentration of materials in the aluminum electrolytic cell is critical during the production process. The cell control machine in the automatic control system can indirectly judge and analyze the concentration of alumina in the aluminum electrolytic cell. Make a reasonable feeding speed, so as to achieve the control of the material concentration in the tank. Higher current efficiency and stability can be obtained by controlling the concentration of alumina in the tank within a lower range. However, lower alumina concentration often leads to frequent anode effects, because the wettability between the electrolyte and the anode...

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Problems solved by technology

However, since the analysis of the cell voltage for the concentration of alumina needs to filter the cell voltage data for a long time, it is difficult to give the forecast in a sufficient time before the occurrence of the anode effect, and it is not possible to obtain enough time to suppress the occurrence of the anode effect. The treatment time, resulting in the inhibition of the anode effect, is often insufficient, and the anode effect still occurs frequently

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