Prebaked aluminum electrolytic tank parameter measuring method and its device

A technology of aluminum electrolytic cells and process parameters, which is applied in the field of measuring devices, can solve the problems of inability to measure the process parameters of pole distance and cathode voltage drop, increase labor intensity of workers, and reduce current efficiency, so as to improve measurement accuracy and reliability, Improve computer process control and improve the effect of current efficiency

Active Publication Date: 2007-08-01
GUIZHOU BRANCH CHINA ALUMINUM IND +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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 2004 2 0117075.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

Method used

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  • Prebaked aluminum electrolytic tank parameter measuring method and its device
  • Prebaked aluminum electrolytic tank parameter measuring method and its device
  • Prebaked aluminum electrolytic tank parameter measuring method and its device

Examples

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Effect test

Embodiment 1

[0043] As shown in Figure 2: a device for measuring process parameters of a prebaked aluminum electrolytic cell, including a sampling machine 1, equipped with a polarization layer detection circuit, a fixed-distance measurement cathode voltage drop circuit, a single-chip microcomputer, an electrolyte liquid level detection circuit, and a reference electrode N and the control box 13 of the temperature measuring circuit; the communication line 12 connects the sampling machine 1 to the control box 13, and the reference electrode N is drawn from the control box 13 to connect with the cathode steel rod of the electrolytic cell; the measuring probe 30 is connected to the sampling machine 1 Extend to move in a straight line.

[0044] The measuring device is equipped with a UPS power supply 14, and the UPS power supply 14 supplies power to the control box 13 through the power line 16. The sampling machine 1, the control box 13, and the UPS power supply 14 inclined at an angle of α are ...

Embodiment 2

[0056] In Fig. 10: sampling machine 1 is made up of data acquisition device and running power device; Data acquisition device is made up of measuring probe 30, the armored thermocouple 31 that is positioned at measuring probe 30; The rack and pinion assembly of the lifting part is composed; the slideway 33 is fixed on the casing 42, the stepping motor 22 as the power source is fixed on the slideway 33, the output shaft of the stepping motor 22 is equipped with a gear 43, the measuring probe 30 and the rack 44 Fixedly connected, the gear 43 meshes with the rack 44 located in the slideway 33 for power transmission, the slideway 33 is the running track of the rack 44, and the rack 44 slides and runs linearly in the slideway 33; the measuring probe 30, the rack 44. The slideway 33 is connected, one end of the sampling wire 35 is electrically connected to the slideway 33, and the other end is connected to the terminal 41 fixedly installed on the casing 42 to form the measuring elect...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/20
Inventor 李宁矫立新肖伟峰肇玉卿路建军谷文明魏世湖
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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