Aluminum discharge control method and system of electrolytic cell and storage medium

Abstract

The invention provides an aluminum discharge control method and system of an electrolytic cell and a storage medium, and relates to the technical field of electrolytic aluminum production. When the absolute value of the voltage difference between the actual cell voltage of the electrolytic cell and the preset target voltage is greater than zero, the cell voltage is abnormal; therefore, the main controller can determine a rate regulation factor according to a first ratio of an absolute value of a voltage difference between an actual cell voltage of the electrolytic cell and a preset target voltage to a difference value between a preset maximum cell voltage and a preset minimum cell voltage, 0 lt; a < lt >; a is a rate regulation factor, and the absolute value of the voltage difference is negatively correlated with the rate regulation factor. Therefore, the aluminum discharge rate of the aluminum discharge control system can be reduced, faults or safety accidents caused by abnormal cell voltage are avoided, manual operation is not needed, the labor cost is saved, and the efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrolytic aluminum production, and in particular to an aluminum discharge control method, system, and storage medium for an electrolytic cell. Background Art

[0002] Electrolytic aluminum is pure aluminum extracted from alumina through electrolysis. Specifically, it is produced by electrochemically reacting aluminum oxide at 950-970°C in an electrolytic cell, using alumina as the solute, carbonaceous material as the anode, and molten aluminum as the cathode. A strong direct current is applied to the two electrodes, producing the resulting aluminum.

[0003] During the electrolytic aluminum production process, the electrolytic anode and cell voltage in the electrolytic cell typically maintain a dynamic equilibrium. However, tapping the cell lowers the molten aluminum level, temporarily disrupting this dynamic equilibrium. To minimize the impact of tapping on production, the cell control system gradually lowers the anode position during tapping to maintain a relatively stable anode distance.

[0004] Currently, the gradual lowering of the electrolytic anode position during tapping can cause electrolytic cell failures and even lead to safety accidents such as "slot pulling." Therefore, ensuring stable electrolytic cell conditions during the tapping process is crucial. This typically requires workers to simultaneously monitor the status of the cell control module and the operation of the tapping control module to prevent failures caused by excessive tapping speeds. However, because the cell control module and the tapping control module are typically located at different ends of the electrolytic cell, the current operation requires at least two workers to monitor each separately. This approach is not only inefficient but also poses safety risks. Summary of the Invention

[0005] The present application provides an aluminum tapping control method, system and storage medium for an electrolytic cell, which are used to solve the problems in the prior art of gradually lowering the position of the electrolytic anode during aluminum tapping, which may cause the electrolytic cell to malfunction, or even cause a safety accident of "unplugging" the electrolytic cell, high labor costs and low efficiency.

[0006] In a first aspect, the present application provides an aluminum tapping control method for an electrolytic cell, which is applied to a main controller. The main controller is located in the aluminum tapping control system of the electrolytic cell. The system also includes an electrolytic cell, a cell control module, and an aluminum tapping control module. Electrolytic anodes are respectively provided on opposite sides of the electrolytic cell. The electrolytic anodes are used to electrolyze aluminum oxide powder located in the upper layer of the electrolytic cell into aluminum liquid and precipitate it on the bottom layer of the electrolytic cell. The cell control module is electrically connected to the electrolytic cell, and the main controller is electrically connected to the cell control module and the aluminum tapping control module respectively. The method provided by the present application includes:

[0007] The main controller receives the actual cell voltage of the electrolytic cell detected by the cell control module;

[0008] The master controller determines the absolute value of the voltage difference between the actual cell voltage and the preset target voltage;

[0009] The master controller determines a rate adjustment factor according to the absolute value of the voltage difference between the actual cell voltage and the preset target voltage and a first ratio of the difference between the preset maximum cell voltage and the minimum cell voltage, where 0 < a < 1, a is the rate adjustment factor, and the absolute value of the voltage difference is negatively correlated with the rate adjustment factor;

[0010] The master controller drives the aluminum tapping control system to adjust the aluminum tapping rate of the electrolytic cell according to the rate adjustment factor.

[0011] In some embodiments, before the master controller determines the rate adjustment factor according to the absolute value of the voltage difference between the actual cell voltage and the preset target voltage, the method provided by the present application further includes:

[0012] The master controller receives the actual stroke of the electrolytic anode detected by the cell control module;

[0013] The master controller determines the stroke difference between the preset target stroke and the actual stroke of the electrolytic anode;

[0014] The master controller adjusts the rate adjustment factor according to the stroke difference and a second ratio between the difference between the preset maximum stroke and the minimum stroke, where the second ratio is positively correlated with the rate adjustment factor.

[0015] In some embodiments, before the master controller determines the rate adjustment factor according to the absolute value of the voltage difference between the actual cell voltage and the preset target voltage, the method provided by the present application further includes:

[0016] The master controller receives the amount of aluminum tapped in the current period detected by the aluminum tapping control module;

[0017] The master controller determines a third ratio of the difference between the preset target amount of aluminum tapped in the current period and the amount of aluminum tapped in the current period to the preset target amount of aluminum tapped;

[0018] The master controller adjusts the rate adjustment factor according to the third ratio, where the third ratio is positively correlated with the rate adjustment factor.

[0019] In some embodiments, the adjusted rate adjustment factor satisfies the formula where a is the rate adjustment factor, x is the first ratio, y is the second ratio, z is the third ratio, and k is a preset first correction factor.

[0020] In some embodiments, after the master controller receives the actual stroke of the electrolytic anode detected by the cell control module, the method provided by the present application includes:

[0021] When the main controller determines that the actual stroke of the electrolytic anode is not within the preset safe stroke range, it controls the aluminum output control module to stop working and controls the alarm to sound an alarm.

[0022] In some embodiments, after the main controller receives the actual cell voltage of the electrolytic cell detected by the cell control module, the method provided by the present application further includes:

[0023] When the main controller determines that the actual tank voltage is not within the preset safety voltage range, it controls the aluminum discharge control module to stop working and controls the alarm to sound an alarm.

[0024] In some embodiments, the main controller drives the aluminum tapping control system to adjust the aluminum tapping rate of the electrolytic cell according to the rate adjustment factor. The method provided in this application also includes:

[0025] When it is detected that the amount of aluminum discharged in the current cycle has reached the target amount of aluminum discharged, the aluminum discharge control system is controlled to stop working, and the recorded aluminum discharge control log is uploaded to the data management platform for storage.

[0026] In some embodiments, the main controller determines the rate adjustment factor based on a first ratio of an absolute value of a voltage difference between an actual cell voltage and a preset target voltage to a difference between a preset maximum cell voltage and a preset minimum cell voltage, including:

[0027] According to the formula Determine and adjust the rate adjustment factor, where a is the rate adjustment factor, x is the first ratio, k is the preset first correction factor, and δ is the preset second correction factor.

[0028] In the second aspect, the present application also provides an aluminum output control system for an electrolytic cell, comprising a main controller, an electrolytic cell, a cell control module, and an aluminum output control module. Electrolytic anodes are respectively provided on opposite sides of the electrolytic cell. The electrolytic anodes are used to electrolyze the aluminum oxide powder in the upper layer of the electrolytic cell into aluminum liquid and precipitate it on the bottom layer of the electrolytic cell. The cell control module is electrically connected to the electrolytic cell, and the main controller is electrically connected to the cell control module and the aluminum output control module, respectively. The main controller is used to execute the method provided in the first aspect of the present application.

[0029] In a third aspect, the present application further provides a storage medium storing a computer program. When the computer program is executed by a processor, the computer executes the method provided in the first aspect of the present application.

[0030] The present application provides a method, a system and a storage medium for controlling aluminum tapping of an electrolytic cell. When the absolute value of the voltage difference between the actual cell voltage and the preset target voltage of the electrolytic cell is greater than zero, it indicates that the cell voltage is abnormal. Therefore, the main controller can determine a rate adjustment factor according to the absolute value of the voltage difference between the actual cell voltage and the preset target voltage of the electrolytic cell and the first ratio of the difference between the preset maximum cell voltage and the minimum cell voltage, where 0 < a < 1, a is the rate adjustment factor, and the absolute value of the voltage difference is negatively correlated with the rate adjustment factor. In this way, the aluminum tapping rate of the aluminum tapping control system can be reduced to avoid faults or safety accidents caused by abnormal cell voltage, and manual operation is not required, saving labor costs and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a structural block diagram of an aluminum tapping control system for an electrolytic cell provided by an embodiment of the present application;

[0033] Figure 2 It is a flowchart of a method for controlling aluminum tapping of an electrolytic cell provided by an embodiment of the present application;

[0034] Figure 3 It is a functional module block diagram of an aluminum tapping control device for an electrolytic cell provided by an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present disclosure.

[0036] Various structural schematic diagrams according to embodiments of the present disclosure are shown in the drawings. These figures are not drawn to scale, where for the purpose of clear expression, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures and their relative sizes and positional relationships are merely exemplary. In practice, there may be deviations due to manufacturing tolerances or technical limitations, and those skilled in the art can design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0037] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, it can be directly on the other layer / element or an intervening layer / element may be present therebetween. In addition, if a layer / element is "on" another layer / element in one orientation, it may be "below" the other layer / element when the orientation is reversed.

[0038] Technical terms for this application:

[0039] Electrolytic cell: It is the core equipment in electrolytic aluminum production, used to reduce alumina to metallic aluminum through electrolytic reaction at high temperature.

[0040] Cell voltage refers to the total voltage required for a single electrolytic cell to operate during the aluminum electrolysis process, typically ranging from 3.8V to 4.5V. It is a core parameter in aluminum electrolysis production, directly affecting energy consumption, current efficiency, and aluminum production costs. The greater the distance between the electrolytic anodes, the higher the cell voltage.

[0041] Aluminum tapping control module: The aluminum tapping control module is a key automation system in electrolytic aluminum production. During electrolytic aluminum production, liquid aluminum is deposited at the bottom of the electrolytic cell. The aluminum tapping control module can be used to regularly extract and cast into aluminum ingots to ensure production efficiency, metal quality and energy consumption optimization.

[0042] Anode travel: refers to the vertical movement distance of the anode assembly in the electrolytic cell during electrolytic aluminum production. It is used to adjust the anode-cathode distance (ACD) between the anode and cathode aluminum liquid layers to maintain a stable electrolytic reaction and cell voltage.

[0043] The following describes in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0044] The embodiment of the present application provides an aluminum discharge control method for an electrolytic cell, which is applied to a main controller, which is located in the aluminum discharge control system of the electrolytic cell. Figure 1 As shown, the system provided by the embodiment of the present application also includes an electrolytic cell, a cell control module, and an aluminum output control module. Electrolytic anodes (not shown in the drawings, the electrolytic anodes can be but are not limited to carbon anodes) are respectively provided on opposite sides of the electrolytic cell. The electrolytic anodes are used to electrolyze the aluminum oxide powder in the upper layer of the electrolytic cell into aluminum liquid that is deposited on the bottom layer of the electrolytic cell. The cell control module is electrically connected to the electrolytic cell, and the main controller is electrically connected to the cell control module and the aluminum output control module respectively. Figure 2 As shown, the method provided in the embodiment of the present application includes:

[0045] S201: The main controller receives the actual cell voltage of the electrolytic cell detected by the cell control module.

[0046] S202: The main controller determines the absolute value of the voltage difference between the actual cell voltage and the preset target voltage.

[0047] S203: The main controller determines a rate adjustment factor according to the absolute value of the voltage difference between the actual cell voltage and the preset target voltage and a first ratio of the difference between the preset maximum cell voltage and the minimum cell voltage, where 0 < a < 1, a is the rate adjustment factor, and the absolute value of the voltage difference is negatively correlated with the rate adjustment factor.

[0048] For example, according to the formula a is the rate adjustment factor, x is the first ratio, k is the preset first correction factor, and δ is the preset second correction factor. It should be noted that U current is the actual cell voltage, U target is the target cell voltage, U max is the preset upper limit of the cell voltage, U min is the preset lower limit of the cell voltage, where δ can be equal to 3 or 4 or 5, which is not limited here.

[0049] S204: The main controller drives the aluminum tapping control system to adjust the aluminum tapping rate of the electrolytic cell according to the rate adjustment factor.

[0050] For example, according to the formula V2 = aV1, where V1 is the aluminum tapping speed before adjustment and V2 is the aluminum tapping speed before adjustment.

[0051] In addition, electrolytic anodes are respectively arranged on opposite sides of the electrolytic cell. Before S203, the method provided by the embodiment of the present application further includes:

[0052] Step 1: The main controller receives the actual stroke of the electrolytic anode detected by the cell control module.

[0053] It can be understood that the actual stroke of the electrolytic anode is negatively correlated with the cell voltage; and under normal circumstances, in order to maintain the stability of the cell voltage, during aluminum tapping, as the aluminum water level drops, the position of the electrolytic anode also drops to maintain a good electrode distance.

[0054] Step 2: The main controller determines the stroke difference between the preset target stroke and the actual stroke of the electrolytic anode.

[0055] Step 3: The main controller adjusts the rate adjustment factor according to the stroke difference and a second ratio between the preset maximum stroke and the minimum stroke, where the second ratio is positively correlated with the rate adjustment factor.

[0056] For example, according to the formula Adjust the rate adjustment factor. L current is the actual travel difference, L target is the target travel difference, L max is the preset upper limit of travel, L min In this way, even when the reliability of the cell voltage detection is low, the rate adjustment factor can be adjusted according to the stroke difference, thereby enhancing the reliability of the rate adjustment factor.

[0057] In addition, the method provided in the embodiment of the present application further includes: a main controller receiving the amount of aluminum tapped in the current cycle detected by the aluminum tapping control module; the main controller determining a third ratio between the difference between the preset target aluminum tapping amount for the current cycle and the amount of aluminum tapped in the current cycle and the preset target aluminum tapping amount; and the main controller adjusting the rate adjustment factor based on the third ratio, wherein the third ratio is positively correlated with the rate adjustment factor. This can improve the stability of the aluminum tapping amount.

[0058] For example, the adjusted rate adjustment factor satisfies the formula Wherein, a is the rate adjustment factor, x is the first ratio, y is the second ratio, z is the third ratio, and k is the preset first correction factor. G target is the target aluminum output, G current The actual amount of aluminum produced.

[0059] Based on the above, at the beginning, the difference in aluminum tapping volume is large, and the tapping speed is also relatively high. As the tapping process progresses, the difference in aluminum tapping volume decreases, the liquid aluminum level in the electrolytic cell gradually decreases, the distance from the electrolytic anode to the liquid aluminum level increases, and the actual cell voltage also increases. Therefore, the speed adjustment parameter a will gradually decrease, and the aluminum tapping speed can be reduced accordingly. The reduction in aluminum tapping speed is slow and smooth, without any drastic changes.

[0060] It should be noted that, in the above embodiment, the target aluminum output may be, but not limited to, 3000 kg, and the target stroke may be, but not limited to, between 20 mm and 35 mm. max -U min |Less than 100 mV, the target voltage may be but is not limited to 4 V.

[0061] In summary, for the aluminum tapping control method provided by the embodiment of the present application for an electrolytic cell, when the absolute value of the voltage difference between the actual cell voltage of the electrolytic cell and the preset target voltage is greater than zero, it indicates that the cell voltage is abnormal. Therefore, the main controller can determine the rate adjustment factor according to the absolute value of the voltage difference between the actual cell voltage of the electrolytic cell and the preset target voltage and the first ratio of the difference between the preset maximum cell voltage and the minimum cell voltage, where 0 < a < 1, a is the rate adjustment factor, and the absolute value of the voltage difference is negatively correlated with the rate adjustment factor. In this way, the aluminum tapping rate of the aluminum tapping control system can be reduced to avoid faults or safety accidents caused by abnormal cell voltage, and no manual operation is required, saving labor costs and improving efficiency.

[0062] In addition, the method provided by the embodiment of the present application includes: when the main controller determines that the actual stroke of the electrolytic anode is not within the preset safe stroke range, it indicates that the operation of the electrolytic cell is abnormal at this time. Then, the main controller controls the aluminum tapping control module to stop working and controls the alarm to sound. For example, it controls to turn off the power supply of the high-pressure air circuit solenoid valve of the aluminum tapping control module, exits the aluminum tapping mode, and at the same time controls the alarm (such as an audible and visual alarm) to sound.

[0063] In addition, the method provided by the embodiment of the present application further includes: when the main controller determines that the actual cell voltage is not within the preset safe voltage range, it indicates that the operation of the electrolytic cell is abnormal at this time. Then, the main controller controls the aluminum tapping control module to stop working and controls the alarm to sound. For example, it controls to turn off the power supply of the high-pressure air circuit solenoid valve of the aluminum tapping control module, exits the aluminum tapping mode, and at the same time controls the alarm (such as an audible and visual alarm) to sound.

[0064] In addition, the method provided by the embodiment of the present application further includes: when the detected aluminum tapped amount in the current cycle reaches the target aluminum tapped amount, it controls the aluminum tapping control system to stop working and uploads the recorded aluminum tapping control log to the data management platform for storage, so that the staff can trace back the working conditions of the aluminum tapping control system.

[0065] In addition, the embodiment of the present application further provides an aluminum tapping control system for an electrolytic cell, including a main controller, an electrolytic cell, a cell control module, and an aluminum tapping control module. Electrolytic anodes are respectively arranged on two opposite sides of the electrolytic cell. The electrolytic anodes are used to electrolyze the upper-layer alumina powder in the electrolytic cell into molten aluminum, which precipitates at the bottom layer of the electrolytic cell. The cell control module is electrically connected to the electrolytic cell, and the main controller is electrically connected to the cell control module and the aluminum tapping control module respectively. The main controller is used to execute the method provided by the above embodiment of the present application.

[0066] Please refer to Figure 3, an aluminum tapping control device for an electrolytic cell is provided in an embodiment of the present application, which is applied to a main controller, and the main controller is in the aluminum tapping control system of the electrolytic cell. It should be noted that the basic principle and the technical effects generated by the aluminum tapping control device for the electrolytic cell provided in the embodiment of the present application are the same as those in the above embodiment. For the sake of brief description, for the parts not mentioned in the embodiment of the present application, reference can be made to the corresponding content in the above embodiment. The system provided in the embodiment of the present application further includes an electrolytic cell, a cell control module, and an aluminum tapping control module. Electrolytic anodes are respectively arranged on two opposite sides of the electrolytic cell, and the electrolytic anodes are used to electrolyze the alumina powder on the upper layer in the electrolytic cell into molten aluminum and precipitate it at the bottom layer of the electrolytic cell. The cell control module is electrically connected to the electrolytic cell, and the main controller is respectively electrically connected to the cell control module and the aluminum tapping control module. The device provided in the embodiment of the present application includes a data receiving unit, a voltage difference determining unit, a regulation factor determining unit, and an aluminum tapping regulation unit. Among them,

[0067] The data receiving unit is configured to receive the actual cell voltage of the electrolytic cell detected by the cell control module;

[0068] The voltage difference determining unit is configured to determine the absolute value of the voltage difference between the actual cell voltage and the preset target voltage;

[0069] The regulation factor determining unit is configured to determine a rate regulation factor according to the first ratio of the absolute value of the voltage difference between the actual cell voltage and the preset target voltage to the difference between the preset maximum cell voltage and the minimum cell voltage, where 0 < a < 1, a is the rate regulation factor, and the absolute value of the voltage difference is negatively correlated with the rate regulation factor.

[0070] The regulation factor determining unit is specifically configured to determine the adjusted rate regulation factor according to the formula where a is the rate regulation factor, x is the first ratio, k is a preset first correction factor, and δ is a preset second correction factor.

[0071] The aluminum tapping regulation unit is configured to drive the aluminum tapping control system to adjust the aluminum tapping rate of the electrolytic cell according to the rate regulation factor.

[0072] In some embodiments, the data receiving unit is further configured to receive the actual stroke of the electrolytic anode detected by the cell control module;

[0073] The device provided in the embodiment of the present application further includes: a stroke difference determining unit configured to determine the stroke difference between the preset target stroke and the actual stroke of the electrolytic anode;

[0074] The regulation factor adjustment unit is configured to adjust the rate regulation factor according to the second ratio of the stroke difference to the difference between the preset maximum stroke and the minimum stroke, where the second ratio is positively correlated with the rate regulation factor.

[0075] In some embodiments, the data receiving unit is further configured to receive the amount of aluminum tapped in the current cycle detected by the aluminum tapping control module;

[0076] a ratio determination unit, configured to determine a third ratio between a preset target aluminum output in the current cycle and a difference between the aluminum output amount and the aluminum output amount already discharged in the current cycle, and the preset target aluminum output;

[0077] The apparatus provided in the embodiment of the present application further includes: an adjustment factor adjustment unit, configured to adjust the rate adjustment factor according to a third ratio, wherein the third ratio is positively correlated with the rate adjustment factor.

[0078] In some embodiments, the adjusted rate adjustment factor satisfies the formula Among them, a is the rate adjustment factor, x is the first ratio, y is the second ratio, z is the third ratio, and k is the preset first correction factor.

[0079] In some embodiments, the apparatus provided in the embodiments of the present application includes:

[0080] The safety protection unit is used to control the aluminum output control module to stop working and the alarm to sound when the main controller determines that the actual stroke of the electrolytic anode is not within the preset safety stroke range.

[0081] The safety protection unit is also used to control the aluminum tapping control module to stop working and control the alarm to sound when the actual cell voltage is not within the preset safety voltage range.

[0082] The device provided in the embodiment of the present application may also include: a data uploading unit, which is used to control the aluminum discharge control system to stop working when it is detected that the aluminum discharge amount in the current cycle has reached the target aluminum discharge amount, and upload the recorded aluminum discharge control log to the data management platform for storage.

[0083] In addition, an embodiment of the present application further provides a storage medium, which stores a computer program. When the computer program is executed by a processor, the computer executes the method provided in the above embodiment of the present application.

[0084] While the above description does not provide detailed technical details regarding the patterning of each layer, those skilled in the art will appreciate that various technical means can be employed to form layers, regions, and the like in desired shapes. Furthermore, those skilled in the art may devise methods that differ from those described above to achieve the same structure. Furthermore, while each embodiment has been described separately, this does not mean that the measures in each embodiment cannot be advantageously combined.

[0085] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0086] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A method for controlling aluminum discharge from an electrolytic cell, characterized in that: Applied to the master controller, which is in the aluminum tapping control system of an electrolytic cell. The system further includes an electrolytic cell, a cell control module, and an aluminum tapping control module. Electrolytic anodes are respectively arranged on two opposite sides of the electrolytic cell. The electrolytic anodes are used to electrolyze the alumina powder on the upper layer in the electrolytic cell into molten aluminum, which precipitates at the bottom layer of the electrolytic cell. The cell control module is electrically connected to the electrolytic cell, and the master controller is electrically connected to the cell control module and the aluminum tapping control module respectively. The method includes: The master controller receives the actual cell voltage of the electrolytic cell detected by the cell control module; The master controller determines the absolute value of the voltage difference between the actual cell voltage and a preset target voltage; The master controller determines a rate adjustment factor according to the absolute value of the voltage difference between the actual cell voltage and the preset target voltage and a first ratio of the difference between the preset maximum cell voltage and the minimum cell voltage, where 0 < a < 1, a is the rate adjustment factor, and the absolute value of the voltage difference is negatively correlated with the rate adjustment factor; The master controller drives the aluminum tapping control system to adjust the aluminum tapping rate of the electrolytic cell according to the rate adjustment factor.

2. The method according to claim 1, characterized in that Before the master controller determines the rate adjustment factor according to the absolute value of the voltage difference between the actual cell voltage and the preset target voltage, the method further includes: The master controller receives the actual stroke of the electrolytic anode detected by the cell control module; The master controller determines the stroke difference between the preset target stroke and the actual stroke of the electrolytic anode; The master controller adjusts the rate adjustment factor according to the stroke difference and a second ratio between the difference between the preset maximum stroke and the minimum stroke, where the second ratio is positively correlated with the rate adjustment factor.

3. The method according to claim 2, characterized in that Before the master controller determines the rate adjustment factor according to the absolute value of the voltage difference between the actual cell voltage and the preset target voltage, the method further includes: The master controller receives the amount of aluminum tapped in the current cycle detected by the aluminum tapping control module; The master controller determines a third ratio between the difference between the preset target amount of aluminum tapped in the current cycle and the amount of aluminum tapped in the current cycle and the preset target amount of aluminum tapped; The master controller adjusts the rate adjustment factor according to the third ratio, where the third ratio is positively correlated with the rate adjustment factor.

4. The method according to claim 3, characterized in that The adjusted rate adjustment factor satisfies the formula Among them, a is the rate adjustment factor, x is the first ratio, y is the second ratio, z is the third ratio, and k is the preset first correction factor.

5. The method according to claim 2, characterized in that After the master controller receives the actual stroke of the electrolytic anode detected by the cell control module, the method includes: When the master controller determines that the actual stroke of the electrolytic anode is not within the preset safe stroke range, it controls the aluminum tapping control module to stop working and controls an alarm to sound.

6. The method according to claim 1, characterized in that After the master controller receives the actual cell voltage of the electrolytic cell detected by the cell control module, the method further includes: When the master controller determines that the actual cell voltage is not within the preset safe voltage range, it controls the aluminum tapping control module to stop working and controls an alarm to sound.

7. The method according to any one of claims 1 to 6, characterized in that: The main controller drives the aluminum tapping control system to adjust the aluminum tapping rate of the electrolytic cell according to the rate adjustment factor, and the method further includes: When it is detected that the amount of aluminum discharged in the current cycle reaches the target amount of aluminum discharged, the aluminum discharge control system is controlled to stop working, and the recorded aluminum discharge control log is uploaded to the data management platform for storage.

8. The method according to any one of claims 1 to 6, characterized in that: The main controller determines a rate adjustment factor according to a first ratio of an absolute value of a voltage difference between the actual cell voltage and a preset target voltage to a difference between a preset maximum cell voltage and a preset minimum cell voltage, including: According to the formula Determine and adjust the rate adjustment factor, where a is the rate adjustment factor, x is the first ratio, k is a preset first correction factor, and δ is a preset second correction factor.

9. An aluminum tapping control system for an electrolytic cell, characterized in that: The system includes a main controller, an electrolytic cell, a cell control module, and an aluminum output control module. Electrolytic anodes are respectively provided on opposite sides of the electrolytic cell. The electrolytic anodes are used to electrolyze the aluminum oxide powder in the upper layer of the electrolytic cell into aluminum liquid and precipitate it on the bottom layer of the electrolytic cell. The cell control module is electrically connected to the electrolytic cell, and the main controller is electrically connected to the cell control module and the aluminum output control module respectively. The main controller is used to execute the method described in any one of claims 1 to 8.

10. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the computer is caused to perform the method according to any one of claims 1 to 8.

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