Intelligent material control method in aluminum electrolysis production process

Abstract

The invention discloses an intelligent material control method in an aluminum electrolysis production process. The method comprises the following steps that an interface machine automatically updates an anode changing number according to an anode changing periodic table at a zero hour every day and automatically sends the anode changing number to a cell control machine, and when the cell control machine detects that an anode changing key is pressed down, the cell control machine enters anode changing control, detects the voltage change of an electrolytic cell and simultaneously carries out anode changing timing, if it is detected that the voltage change of the electrolytic cell meets the real anode changing condition or the anode changing duration exceeds the set time, it is considered that real anode changing is completed, after anode changing is finished, the cell control machine automatically controls the discharging points near the new anode according to an anode changing signal issued by the interface machine, and controls the materials according to the set number of times of material control, and after material control is finished, discharging is automatically recovered; and if the cell control machine does not detect the voltage change after the anode changing key is pressed down or the anode changing signal duration is shorter than the set time, it is considered that the real anode changing is not completed, and the condition is treated as misoperation and material control is not carried out. According to the intelligent material control method in the aluminum electrolysis production process, the defects of a traditional material control method are completely overcome, and the material control accuracy is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of aluminum electrolysis production and relates to an intelligent material control method in the aluminum electrolysis production process. Background technique [0002] Throughout the current major aluminum factories, the phenomenon of manual material control has become more and more common. The main reasons are as follows: 1. The current intensity of the electrolytic tank is gradually increasing, the volume of the tank is also increasing, and the local alumina concentration is uneven. Phenomenon increased, and the phenomenon of material accumulation in some blanking points increased; 2. With the improvement of energy saving and consumption reduction requirements, low superheat production has also become the norm, and the solubility of alumina has deteriorated, resulting in increased fire hole jamming and material accumulation; 3. Electrolyzers have pole changing operations every day, and the newly replaced ...

AI Technical Summary

Problems solved by technology

[0002] Throughout the current major aluminum factories, the phenomenon of manual material control has become more and more common. The main reasons are as follows: 1. The current intensity of the electrolytic tank is gradually increasing, the volume of the tank is also increasing, and the local alumina concentration is uneven. Phenomenon increased, and the phenomenon of material accumulation in some blanking points increased; 2. With the improvement of energy saving and consumption reduction requirements, low superheat production has also become the norm, and the solubility of alumina has deteriorated, resulting in increased fire hole jamming and material accumulation; 3. The electrolytic cell has electrode changing operations every day. The newly replaced anodes are temporarily non-conductive, so the demand for alumina is reduced, resulting in the common phenomenon of stacking at the feeding point near the electrode change.

There are two main traditional treatment methods: 1. Manually shut off the solenoid valve or ball valve. The biggest problem with this treatment method is that you often forget to open it after closing it. 1. Cut off the feeding function from the computer. The biggest problem with this method is that all points do not feed at the same time, and it is impossible to control the material on demand and solve the problem of uneven alumina concentration. At the same time, it also needs to be manually recovered from the computer.

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