CN117702198B

CN117702198B - Electrolytic copper refining current control system and method

Info

Publication number: CN117702198B
Application number: CN202410030248.6A
Authority: CN
Inventors: 李琪中; 何世武; 刘彩林; 赵庆琚
Original assignee: Shenzhen Ruisheng Environmental Protection Technology Co ltd
Current assignee: Shenzhen Ruisheng Environmental Protection Technology Co ltd
Filing date: 2024-01-09
Publication date: 2024-07-09
Anticipated expiration: 2044-01-09

Abstract

The invention discloses a system and a method for controlling electrolytic copper refining current, which relate to the technical field of current control systems, wherein in the process of electrolytic copper, an electrolytic tank monitoring module monitors electrolytic data of an electrolytic tank in real time, an equipment monitoring module monitors operation data of power supply equipment in real time, an analysis module comprehensively analyzes the electrolytic data and the operation data and then carries out primary judgment, the primary judgment is to judge whether the current electrolytic operation supports continuous operation, if the current electrolytic operation supports continuous operation, secondary judgment is carried out, the secondary judgment is to judge whether current intensity needs to be regulated, when the secondary judgment result is that the current intensity needs to be regulated, a current optimization module calculates and acquires corrected current intensity, and the corrected current intensity is sent to a power supply module.

Description

Electrolytic copper refining current control system and method

Technical Field

The invention relates to the technical field of current control systems, in particular to a system and a method for controlling electrolytic copper refining current.

Background

Electrolytic copper extraction is a common smelting process for extracting pure copper from copper ores or waste copper, which involves placing copper ores or waste copper in an electrolytic bath and then separating the copper from the raw material by electrolysis, which involves immersing positive and negative electrodes in an electrolyte, typically a copper sulfate solution, and then applying an electric current such that copper ions on the positive electrode are reduced to pure copper metal and metal ions on the negative electrode are oxidized, the key to electrolytic copper extraction being to control the current system to ensure an efficient, continuous, stable copper extraction process.

The prior art has the following defects:

The existing control system is usually used for emergently disconnecting the current and offending emergency stop when abnormality exists in the electrolysis process, so that equipment and operators are protected, however, when slight abnormality exists in the electrolysis process, the control system cannot detect and reduce the current, constant current is adopted to continue electrolysis at the moment, the equipment failure speed can be increased, and safety accidents are caused;

therefore, the invention provides an electrolytic copper refining current control system which can automatically reduce current when slight abnormality is detected, and ensure safe operation of equipment.

Disclosure of Invention

The invention aims to provide a system and a method for controlling electrolytic copper refining current, which are used for solving the defects in the background technology.

In order to achieve the above object, the present invention provides the following technical solutions: an electrolytic copper refining current control system comprises a current control module, a power supply module, an electrolytic tank monitoring module, an equipment monitoring module, an analysis module, a warning module and a current optimizing module:

And a current control module: after the electrolytic copper raw material is put into the electrolytic bath, the initial current intensity is input by an operator;

And a power supply module: is responsible for supplying current to the electrolytic cell;

Cell monitoring module: in the copper electrolysis process, the method is used for monitoring electrolysis data of the electrolytic tank in real time;

And the equipment monitoring module: in the copper electrolysis process, the method is used for monitoring the operation data of the power supply equipment in real time;

And an analysis module: after comprehensively analyzing the electrolysis data and the operation data, performing primary judgment, wherein the primary judgment is to judge whether the current electrolysis operation is supported to be continued, if the current electrolysis operation is supported to be continued, performing secondary judgment, and the secondary judgment is to judge whether the current intensity needs to be regulated;

And the warning module is used for: when the primary judgment result shows that the current electrolysis operation does not support continuous operation, the warning module controls the power supply module to stop supplying power and sends a warning signal to an operator;

And a current optimization module: when the secondary judgment result is that the current intensity needs to be regulated, the current optimization module calculates and acquires the corrected current intensity, and the corrected current intensity is sent to the power supply module.

Preferably, the analysis module comprehensively calculates the uneven deposition index of the electrode surface, the concentration floating coefficient of the electrolyte and the current overload index to obtain the adjustment coefficientThe expression is:

；

In the method, in the process of the invention, For the index of non-uniform deposition on the electrode surface,Is the concentration floating coefficient of the electrolyte,As an index of the current overload,、、Respectively the non-uniform deposition index of the electrode surface, the concentration floating coefficient of the electrolyte and the proportional coefficient of the current overload index, and、、Are all greater than 0.

Preferably, the analysis module obtains an adjustment coefficientAfter the value, the adjustment coefficient is adjustedThe value is compared with a preset gradient threshold, the gradient threshold comprises a first threshold and a second threshold, and the first threshold is smaller than the second threshold.

Preferably, if the adjustment coefficientThe value is larger than a second threshold value, the current electrolytic operation is judged to be seriously abnormal and is not supported to continue, and the warning module controls the power supply module to stop supplying power and sends a warning signal to an operator;

If the adjustment coefficient is And the value is less than or equal to a first threshold value, and judging that no abnormality exists in the current electrolysis operation.

Preferably, if the first threshold value < the adjustment coefficientThe value is less than or equal to a second threshold value, the current electrolysis operation is judged to be slightly abnormal, the current intensity needs to be regulated, the current optimization module calculates and acquires the corrected current intensity, and the expression is as follows:

；

In the method, in the process of the invention, In order to correct the intensity of the current,For the initial current intensity to be high,For adjusting the coefficient, the current optimization module obtains the corrected current intensity, the corrected current intensity is sent to the power supply module, and the power supply module supplies power for the electrolytic tank through the corrected current intensity.

Preferably, the calculation expression of the electrode surface non-uniform deposition index is:

；

In the method, in the process of the invention, For the index of non-uniform deposition on the electrode surface,Is the electrical conductivity of the electrolyte solution and,Is the gradient of the solute concentration in the electrolyte relative to the x-direction, and represents the rate of change of the solute concentration at the electrode surface.

Preferably, the calculation expression of the concentration floating coefficient of the electrolyte is:

In the method, in the process of the invention, Is the concentration floating coefficient of the electrolyte,For the real-time concentration variation of the electrolyte,For the period of the anodic dissolution pre-warning,The time period of the early warning of the water evaporation is provided.

Preferably, the calculation expression of the current overload index is:

；

In the method, in the process of the invention, As an index of the current overload,For the current load currently experienced by the power supply device,Is the rated current bearing capacity of the power supply equipment.

Preferably, during the electrolysis process, the anode dissolves and releases copper ions into the electrolyte, which can cause the increase of the concentration of copper ions in the electrolyte, and the concentration of the electrolyte is increased, wherein the period when the anode dissolves exceeds the dissolving amount is the anode dissolution early-warning period;

in the electrolysis process, the temperature in the electrolytic tank rises to cause the evaporation of water in the electrolyte, the solute concentration of the electrolyte can be increased after the evaporation because of the reduction of water, and the time period when the water evaporation exceeds the evaporation quantity threshold value is the time period of water evaporation early warning.

The invention also provides a control method for electrolytic copper refining current, which comprises the following steps:

s1: after the electrolytic copper raw material is put into the electrolytic bath, an operator inputs initial current intensity to power supply equipment, and the power supply equipment supplies power for the electrolytic bath;

s2: in the copper electrolysis process, the monitoring end monitors electrolysis data of the electrolytic tank in real time and monitors operation data of power supply equipment in real time;

s3: after comprehensively analyzing electrolysis data and operation data, the processing end carries out primary judgment;

s4: the primary judgment is to judge whether the current electrolysis operation supports continuous operation or not, if the current electrolysis operation supports continuous operation, the secondary judgment is carried out;

s5: judging whether the current intensity needs to be adjusted or not;

S6: when the primary judgment result shows that the current electrolysis operation does not support continuous operation, controlling the power supply equipment to stop power supply and sending a warning signal to an operator;

S7: when the secondary judgment result shows that the current intensity needs to be regulated, calculating and obtaining the corrected current intensity, and sending the corrected current intensity to power supply equipment, wherein the power supply equipment supplies power for the electrolytic cell by the corrected current intensity.

In the technical scheme, the invention has the technical effects and advantages that:

1. According to the invention, the electrolytic data of the electrolytic tank is monitored in real time in the copper electrolysis process through the electrolytic tank monitoring module, the operation data of the power supply equipment is monitored in real time in the copper electrolysis process through the equipment monitoring module, after the analysis module comprehensively analyzes the electrolytic data and the operation data, the primary judgment is carried out to judge whether the current electrolytic operation is supported to continue, if the current electrolytic operation is supported to continue, the secondary judgment is carried out to judge whether the current intensity needs to be regulated, when the primary judgment result is that the current electrolytic operation is not supported to continue, the warning module controls the power supply module to stop supplying power and sends a warning signal to an operator, and when the secondary judgment result is that the current intensity needs to be regulated, the current optimization module calculates and acquires the corrected current intensity, and the corrected current intensity is sent to the power supply module.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a block diagram of a system according to the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1: referring to fig. 1, the electrolytic copper refining current control system of the present embodiment includes a current control module, a power supply module, an electrolytic tank monitoring module, an equipment monitoring module, an analysis module, a warning module, and a current optimizing module:

An electrolytic cell: the electrolytic cell is the core of copper extraction, including the positive and negative electrodes, and this module includes the design and construction of the electrolytic cell to ensure uniform current distribution, and the electrolyte circulation system to maintain temperature and ion concentration, and specifically includes the steps of:

the design of the electrolytic cell:

the copper extraction scale required is determined to determine the size and capacity of the electrolyzer.

Considering the shape of the electrolyzer, it is generally chosen to be rectangular or square to ensure a uniform current distribution.

The materials of which the cells are designed are typically manufactured using conductive materials such as steel or copper, while taking into account the corrosion resistance of the materials.

And (3) constructing an electrolytic cell:

the electrolytic cell is constructed according to design specifications to ensure that the interior of the electrolytic cell is smooth without sharp edges or depressions to avoid current concentration or uneven ion concentration.

The positive and negative electrodes are installed, the positive electrode being typically made of pure copper, while the negative electrode may be stainless steel or other material, ensuring their uniform distribution in the cell.

Cell insulation and insulation coating:

Insulating material is applied to the exterior surfaces of the cell to reduce current leakage and to ensure that current only flows through the interior of the cell.

An insulating coating is applied to the surface of the internal electrode of the cell to reduce the loss of electrolytic reaction on the cell wall and thereby improve efficiency.

Electrolyte circulation system:

an electrolyte circulation system is installed to ensure uniform mixing of the electrolyte within the electrolytic cell, maintaining uniform temperature and ion concentration.

Electrolyte is sucked in from the bottom by means of pumps and pipes and then sprayed on top of the cell to ensure a uniform distribution of electrolyte.

And (3) temperature control:

a heater and a cooler are installed to control the temperature of the electrolytic cell. It is important to maintain a constant temperature to ensure the stability of the electrolysis reaction.

And a current control module: after the electrolytic copper raw material is put into the electrolytic tank, the electrolytic copper raw material is used for inputting initial current intensity by an operator, and the power supply module is controlled to supply power for the electrolytic tank by the initial current intensity, and the method specifically comprises the following steps of:

User input:

An operator interacts with the current control module through a human-machine interface or control panel. Here, the operator inputs the required initial amperage, which is a key parameter in the electrolytic copper refining process.

And (3) parameter verification:

the current control module verifies whether the initial amperage input by the operator is within a safe range. If outside the allowed range, the system may issue a warning or reject the setting.

And (3) adjusting a power supply system:

Once the initial amperage is validated and passed, the current control module communicates with the power supply system. The power supply system typically includes a dc power source and a current controller that can provide the required amperage.

And (3) current supply:

The current control module sends instructions to the power supply system asking it to provide an initial amperage. The power supply system adjusts the current according to the instruction and supplies the current to the electrodes in the electrolytic cell to initiate the electrolytic reaction.

Current monitoring:

The current control module will continuously monitor the actual value of the current to ensure that it matches the initial amperage. If the current deviates from the set point, the control module will take steps to adjust the current supply to restore the desired level.

And a power supply module: in order to supply current to the electrolyzer, a direct current power supply is generally adopted, and the current intensity needs to be adjusted to adapt to different operating conditions, and the method specifically comprises the following steps:

Initial setting:

before starting the electrolytic copper refining process, an operator or automated control system will set the desired initial amperage according to the process requirements. This initial amperage is typically provided by the current control module.

Current measurement:

The power supply module typically includes a current measurement device for monitoring the intensity of the current in real time. These devices can collect current data for feedback control and adjustment.

Current regulation:

According to the technological requirements, the power supply module can adjust the current intensity by adjusting the output voltage and current of the current source. This typically involves the use of open or closed loop control strategies to ensure that the current reaches the desired level.

Feedback control:

The power module may use a feedback control system to monitor the output of the current measurement device and adjust the output current based on the measurement. This makes it possible to keep the current intensity within a desired range, and to maintain stability even in the case of a change in the operating conditions.

Current limiting and protection:

the power supply module typically has current limiting and protection functions to prevent the current from exceeding a set safety range. If the current exceeds the limit value, the power module may take action, such as reducing the output current or triggering an emergency shutdown.

Adjustment at variation:

In electrolytic copper refining, the amperage may need to be adjusted for different operating conditions (e.g., electrolyte concentration changes or temperature fluctuations). The power module needs to respond to these changes to keep the current within safe and effective limits.

Cell monitoring module: in the copper electrolysis process, the method is used for monitoring electrolysis data of the electrolytic tank in real time, and after preprocessing the electrolysis data, the electrolysis data are sent to an analysis module, and specifically comprises the following steps:

And (3) data acquisition:

The monitoring module uses sensors and measurement equipment to collect data inside the electrolyzer in real time. These data may include key parameters such as current, voltage, temperature, electrolyte concentration, electrode status, etc.

Data preprocessing:

The raw data collected may contain noise or instability, and the monitoring module needs to pre-process the data to remove the noise and ensure accuracy of the data. This includes filtering, smoothing, and correction operations.

Data analysis:

The monitoring module may perform some basic analysis of the data to detect anomalies or trends. For example, it can be checked whether the current density is uniformly distributed, whether the temperature is within a normal range, whether the electrolyte concentration is stable, and the like.

And the equipment monitoring module: in the copper electrolysis process, the operation data of the power supply equipment is monitored in real time, and after the operation data is preprocessed, the operation and the data are sent to an analysis module, and the method specifically comprises the following steps:

And (3) data acquisition:

The device monitoring module uses the sensor and the monitoring device to collect operational data of the power supply device in real time. Such data may include key parameters such as voltage, current, temperature, vibration, power state, etc.

Data preprocessing:

the raw data collected may contain noise or instability, and the monitoring module needs to pre-process the data to remove noise, smooth the data, and ensure accuracy of the data.

Data analysis:

the monitoring module analyzes the data to detect the performance and operational status of the device. This includes checking whether the current and voltage are in a normal range, whether the temperature is in a safe range, whether abnormal vibration of the device occurs, and the like.

And an analysis module: after the electrolysis data and the operation data are comprehensively analyzed, the primary judgment is carried out, whether the current electrolysis operation is supported to be carried out is judged, if the current electrolysis operation is supported to be carried out continuously, the secondary judgment is carried out, whether the current intensity needs to be regulated or not is judged, the primary judgment result is sent to the warning module, and the secondary judgment result is sent to the current optimizing module.

And the warning module is used for: when the primary judgment result is that the current electrolysis operation does not support continuous operation, the warning module controls the power supply module to stop supplying power and sends a warning signal to an operator, and the method specifically comprises the following steps of:

stopping power supply:

after the judgment result is sent out, the warning module can communicate with the power supply module and requires to stop current supply. This may include sending a shutdown command to cause the power module to stop providing current to the electrolyzer.

Alarm signal:

At the same time, the alert module will signal an alarm to the operator to alert them to the current situation and suggest taking the necessary action. This may be achieved by visual or audible signals such as alarm sounds, flashing lights, screen messages, etc.

And (3) starting a safety program:

After stopping the current supply, the alarm module may initiate a safety procedure, which includes disconnecting the electrolyzer from the power supply, cooling the equipment, starting an emergency exhaust system, etc., to ensure that the electrolyzer and the equipment are in a safe state.

Informing the relevant party:

The alert module may also issue notifications, such as maintenance personnel, management personnel, or emergency response teams, to the interested party via the communication system to report the problem and request support.

According to the application, the electrolytic data of the electrolytic tank is monitored in real time in the copper electrolysis process through the electrolytic tank monitoring module, the operation data of the power supply equipment is monitored in real time in the copper electrolysis process through the equipment monitoring module, after the analysis module comprehensively analyzes the electrolytic data and the operation data, the primary judgment is carried out to judge whether the current electrolytic operation is supported to continue, if the current electrolytic operation is supported to continue, the secondary judgment is carried out to judge whether the current intensity needs to be regulated, when the primary judgment result is that the current electrolytic operation is not supported to continue, the warning module controls the power supply module to stop supplying power and sends a warning signal to an operator, and when the secondary judgment result is that the current intensity needs to be regulated, the current optimization module calculates and acquires the corrected current intensity, and the corrected current intensity is sent to the power supply module.

Example 2: after comprehensively analyzing the electrolysis data and the operation data, the analysis module carries out primary judgment, wherein the primary judgment is that whether the current electrolysis operation is supported to be carried out is judged, if the current electrolysis operation is supported to be carried out, secondary judgment is carried out, whether the current intensity needs to be regulated is judged, the primary judgment result is sent to the warning module, and the secondary judgment result is sent to the current optimizing module;

The analysis module comprehensively analyzes electrolysis data and operation data, wherein the electrolysis data comprises an electrode surface uneven deposition index and an electrolyte concentration floating coefficient, and the operation data comprises a current overload index;

The calculated expression of the electrode surface non-uniform deposition index is:

；

In the method, in the process of the invention, For the index of non-uniform deposition on the electrode surface,Is the conductivity (constant) of the electrolyte,Is the gradient of the solute concentration (typically metal ions) in the electrolyte with respect to the x-direction, which represents the rate of change of the solute concentration at the electrode surface;

the larger the non-uniform deposition index value of the electrode surface is, the more the copper electrolysis process is:

1) The current density distribution is not uniform: uneven deposition can result in uneven current density distribution across the electrode surface; certain regions have higher current densities, while other regions have lower current densities; this may result in excessive dissolution of the electrodes in some areas and insufficient deposition in other areas, thereby affecting deposition uniformity and efficiency of the electrolysis process;

2) The quality is uneven: uneven deposition may result in the formation of deposited layers of varying thickness on the electrode surface; this can lead to uneven mass distribution on the electrode surface, possibly leading to quality problems and material non-uniformity;

3) Energy efficiency decreases: non-uniform deposition may require higher current densities to meet the desired deposition rate, which may result in reduced energy efficiency of the electrolysis process, as some areas may require more electrical energy to be consumed to complete the deposition;

4) Electrolyte concentration change: in copper electrolysis, uneven deposition on the electrode surface may cause a change in the concentration of copper ions in the local electrolyte; this may require additional electrolyte treatment to maintain a constant solute concentration;

5) Electrode damage and corrosion: excessive uneven deposition may cause excessive damage or corrosion to the electrodes in certain areas of the cell, which may require more frequent electrode replacement and maintenance;

therefore, there is a need to reduce the input current to the electrolyzer.

The calculation expression of the concentration floating coefficient of the electrolyte is as follows:

In the method, in the process of the invention, Is the concentration floating coefficient of the electrolyte,For the real-time concentration variation of the electrolyte,For the period of the anodic dissolution pre-warning,The time period is the time period of the water evaporation early warning;

During electrolysis, the anode (usually copper block) dissolves and releases copper ions into the electrolyte, which causes an increase in the concentration of copper ions in the electrolyte, thereby increasing the concentration of the electrolyte, and therefore, during electrolysis of copper, a period in which the anode dissolves more than the dissolution amount is a period in which the anode dissolves early warning, during which the electrolyte concentration can rise;

in the process of electrolysis, the temperature in the electrolytic tank is generally increased, which may cause evaporation of water in the electrolyte, and the concentration of solute in the electrolyte is increased after evaporation because of reduction of water, so in the process of copper electrolysis, the period of time when the water evaporation exceeds the threshold value of the evaporation amount is the period of time when the water evaporation is early-warned, and the concentration of the electrolyte is increased in the period of time;

The greater the electrolyte concentration float factor, the higher the electrolyte concentration due to anodic dissolution and water evaporation, resulting in:

1) Energy efficiency decreases: an increase in electrolyte concentration may require a higher current density to maintain the desired electrolysis reaction rate, which may lead to a decrease in the energy efficiency of the electrolysis process, as more electrical energy is consumed;

2) The quality is uneven: non-uniform concentration may result in different deposition rates in different areas of the cell, thereby forming a non-uniform thickness of the deposited layer on the electrode surface, which may affect the quality and uniformity of the product;

3) Electrolyte treatment requirements: an increase in electrolyte concentration may require more frequent electrolyte treatments, such as replenishing new electrolyte or taking concentration steps to maintain a desired solute concentration;

4) The electrolytic cell performance is unstable: the variation in concentration may lead to unstable operating conditions within the electrolyzer, which may affect the control and efficiency of the electrolysis process;

5) Risk of equipment corrosion: in some cases, an increase in the electrolyte concentration may lead to an increased risk of corrosion of the cells and equipment, as the increase in concentration may lead to a more aggressive electrolyte;

6) Product purity impact: in certain electrochemical processes, variations in electrolyte concentration may affect the purity of the final product, and high concentrations of electrolyte may lead to unwanted impurities or elevated concentrations of impurities;

therefore, there is a need to reduce the input current to the electrolyzer.

The calculation expression of the current overload index is as follows:

；

In the method, in the process of the invention, As an index of the current overload,For the current load currently experienced by the power supply device,A rated current carrying capacity for the power supply device;

If the current overload index is equal to 1, it means that the device is operating just at its rated current capacity without overload;

If the current overload index is smaller than 1, the current load of the equipment is lower than the rated current capacity, and a certain residual capacity exists;

If the current overload index is greater than 1, indicating that the device is experiencing a current load exceeding its rated current capacity, an overload condition may exist where it is desirable to reduce the output current level of the power device to avoid damage to the power device.

The analysis module comprehensively calculates the uneven deposition index of the electrode surface, the concentration floating coefficient of the electrolyte and the current overload index to obtain an adjustment coefficientThe expression is:

；

By adjusting the coefficientThe calculated expression of (2) shows that the adjustment coefficientThe larger the value, the more serious the current electrolysis abnormality is, thus, the adjustment coefficient is obtainedAfter the value, the adjustment coefficient is adjustedComparing the value with a preset gradient threshold value, wherein the gradient threshold value comprises a first threshold value and a second threshold value, and the first threshold value is smaller than the second threshold value;

If the adjustment coefficient is The value is larger than a second threshold value, the current electrolytic operation is judged to be seriously abnormal and is not supported to continue, and the warning module controls the power supply module to stop supplying power and sends a warning signal to an operator;

if the first threshold value is smaller than the adjustment coefficient The value is less than or equal to a second threshold value, the current electrolysis operation is judged to be slightly abnormal, but the current intensity is required to be regulated to ensure the stable operation of power supply equipment, and the current optimization module calculates and acquires the corrected current intensity, wherein the expression is as follows:

；

In the method, in the process of the invention, In order to correct the intensity of the current,For the initial current intensity to be high,For adjusting the coefficient, the current optimization module acquires the corrected current intensity, the corrected current intensity is sent to the power supply module, and the power supply module supplies power for the electrolytic tank by the corrected current intensity;

The application obtains the regulating coefficient by comprehensively calculating the uneven deposition index, the concentration floating coefficient and the current overload index of the electrode surface through the analysis moduleThe data processing efficiency is effectively improved, and the analysis is more comprehensive.

Example 3: the control method for electrolytic copper refining current in the embodiment comprises the following steps:

The electrolytic bath is a core part of copper extraction and comprises a positive electrode and a negative electrode, the module comprises the design and construction of the electrolytic bath so as to ensure uniform current distribution and a circulating system of electrolyte so as to maintain temperature and ion concentration, after electrolytic copper raw materials are put into the electrolytic bath, an operator inputs initial current intensity to power supply equipment, the power supply equipment supplies power to the electrolytic bath, a monitoring end monitors electrolytic data of the electrolytic bath in real time in the electrolytic copper process, operation data of the power supply equipment are monitored in real time, a processing end comprehensively analyzes the electrolytic data and the operation data, and then makes a primary judgment so as to judge whether the current electrolytic operation is supported to be continued, if the current electrolytic operation is supported to be continued, a secondary judgment is made so as to judge whether the current intensity needs to be regulated, when the primary judgment result is that the current electrolytic operation is not supported to be continued, the power supply equipment is controlled to stop supplying and gives a warning signal to the operator, when the secondary judgment result is that the current intensity needs to be regulated, the correction current intensity is calculated and obtained, the correction current intensity is sent to the power supply equipment so as to correct the current intensity to supply the electrolytic bath.

The above formulas are all formulas with dimensions removed and numerical values calculated, the formulas are formulas with a large amount of data collected for software simulation to obtain the latest real situation, and preset parameters in the formulas are set by those skilled in the art according to the actual situation.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims

1. An electrolytic copper refining current control system, characterized in that: the device comprises a current control module, a power supply module, an electrolytic tank monitoring module, an equipment monitoring module, an analysis module, a warning module and a current optimizing module:

And a current optimization module: when the secondary judgment result shows that the current intensity needs to be regulated, the current optimization module calculates and acquires the corrected current intensity, and the corrected current intensity is sent to the power supply module;

The analysis module comprehensively calculates the uneven deposition index of the electrode surface, the concentration floating coefficient of the electrolyte and the current overload index to obtain the adjustment coefficient The expression is:

；

In the method, in the process of the invention, For the index of non-uniform deposition on the electrode surface,Is the concentration floating coefficient of the electrolyte,As an index of the current overload,、、Respectively the non-uniform deposition index of the electrode surface, the concentration floating coefficient of the electrolyte and the proportional coefficient of the current overload index, and、、Are all greater than 0;

the analysis module obtains the adjustment coefficient After the value, the adjustment coefficient is adjustedComparing the value with a preset gradient threshold value, wherein the gradient threshold value comprises a first threshold value and a second threshold value, and the first threshold value is smaller than the second threshold value;

If the adjustment coefficient is The value is less than or equal to a first threshold value, and the current electrolysis operation is judged to have no abnormality;

if the first threshold value is smaller than the adjustment coefficient The value is less than or equal to a second threshold value, the current electrolysis operation is judged to be slightly abnormal, the current intensity needs to be regulated, the current optimization module calculates and acquires the corrected current intensity, and the expression is as follows:

；

The calculation expression of the electrode surface non-uniform deposition index is as follows:

；

In the method, in the process of the invention, For the index of non-uniform deposition on the electrode surface,Is the electrical conductivity of the electrolyte solution and,Is the gradient of the solute concentration in the electrolyte relative to the x direction, and represents the change rate of the solute concentration on the electrode surface;

the calculation expression of the current overload index is as follows:

；

In the electrolytic process, the anode dissolves and releases copper ions into the electrolyte, so that the concentration of the copper ions in the electrolyte is increased, the concentration of the electrolyte is increased, and the period of anode dissolution exceeding the dissolution amount is the period of anode dissolution early warning;

2. A method of controlling electrolytic copper refining current by the control system of claim 1, wherein: the control method comprises the following steps:

s5: judging whether the current intensity needs to be adjusted or not;