Prebaked aluminum electrolytic tank parameter measuring method and its device

Abstract

The invention discloses a method for measuring technological parameter for prebaked cell for aluminum-reduction, comprising following steps: inserting measuring probe driven by stepper motor into electrolyser, the impulse frequency of rotation rate for stepper motor continuously input into monolithic machine for counting and storing; checking electrolyte liquid surface, anode liquid surface and cathode liquid surface by relative checking circuit according to voltage change feature of different layer in aluminum cell solution, inputting relative measuring signal into monolithic machine; monolithic machine counting out polar distance, aluminum concentration and electrolyte concentration according to set mathematical model; the measured voltage is cathode voltage when the down vertical distance of measuring probe in aluminium liquid is 60- 100 mm; the polar distance, aluminum concentration, electrolyte concentration and electrolytic temperature are input into display screen by monolithic machine for real time display; the over travel-limit switch resetting measuring probe. The measuring device mainly comprises sampling machine and controlling tank; controlling tank is equipped with polarization layer measuring circuit and spacing measuring cathode pressure differential circuit; and sampling machine comprises data collecting device and operation power device.

Description

technical field [0001] The invention relates to a method for automatically measuring technical parameters of an aluminum electrolytic cell in the electrolytic aluminum production process by applying the electromechanical integration technology, and also relates to a measuring device using the method. Background technique [0002] The pole distance, cathode pressure drop, electrolysis temperature, aluminum level, and electrolyte level in the electrolytic cell are five important process parameters in the production process of electrolytic aluminum. If these process parameters meet the process requirements, electrolytic production can be carried out normally. Production indicators such as aluminum output, quality and energy consumption can reach a more ideal level. [0003] At present, electrolytic aluminum factories use the traditional method of manual insertion of steel brazing and thermocouples to measure these five process parameters. The impact makes it almost impossible ...

AI Technical Summary

Problems solved by technology

[0003] At present, electrolytic aluminum factories use the traditional method of manual insertion of steel brazing and thermocouples to measure these five process parameters. influence, making it almost impossible for traditional measurement methods to achieve relatively accurate measurement accuracy

If the measurement error is too large, it may mislead electrolytic production, resulting in adverse phenomena such as reduced production of aluminum water, increased energy consumption, reduced current efficiency, and increased labor intensity of workers.

Chinese utility model patent 200420117075.X discloses an automatic measuring device for process parameters of an aluminum electrolytic cell, which is only used to measure the aluminum level, electrolyte level and temperature of the electrolytic cell, but cannot measure the two important process parameters of pole distance and cathode pressure drop

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