Method for on-line regulation and control of zinc-acid ratio of electrodeposition circulating liquid

Abstract

The invention relates to a method for regulating and controlling the zinc-acid ratio of electrodeposition circulating liquid on line, and relates to the technical field of zinc electrodeposition processes. The method is applied to a system for online detection of the zinc-acid ratio of the electrodeposition circulating liquid, the zinc content in a sample can be measured through a zinc detection module, and meanwhile, a first conductivity sensor is arranged to be matched with a first color sensor for matched detection, so that the accuracy and reliability of zinc content detection are effectively guaranteed; the acid content in a sample can be measured through the acid detection module, and meanwhile, a second PH electrode is arranged to be matched with a second color sensor for matched detection, so that the accuracy and reliability of acid content detection are effectively guaranteed; according to the method, the acid content value and the zinc content value are monitored in real time, so that the zinc-acid ratio is adjusted, efficient and stable proceeding of the zinc electrodeposition reaction can be effectively guaranteed, and the production quality of zinc electrodeposition is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of zinc electrowinning process, and in particular to a method for online regulating the zinc-acid ratio of an electrowinning circulating liquid. Background Art

[0002] In the zinc electrowinning process, reasonable control of the zinc-acid ratio is conducive to stable production, reducing power consumption, and thus improving economic benefits. Therefore, by detecting the zinc-acid ratio, the zinc electrowinning process can be optimized to ensure an efficient and sustainable production process.

[0003] In current zinc smelting enterprises, the most common method for testing the zinc acid ratio is to take samples manually and then test the electrolyte by titration. However, this manual testing method has problems such as long time consumption, large operating errors and high labor intensity, and cannot meet the current production requirements for timely online testing.

[0004] With the construction of automated and intelligent factories, some zinc smelting enterprises have begun to use online detection to detect the zinc acid ratio, that is, to sample and analyze the electrolyte through automated equipment. However, in this automated detection method, some parts still require manual participation in the detection, such as manual titration judgment and manual calculation. Affected by the experience and ability of the operators, the detection results have poor consistency, and the detection efficiency will also be affected. It still cannot meet the current production requirements for timely online detection, affecting production efficiency. For the detection of zinc acid ratios that are automated throughout the entire process, due to the lack of accurate judgment of the detection reaction, the detection results are inaccurate, affecting the production quality of zinc electrowinning. Summary of the invention

[0005] In order to solve or partially solve the problems existing in the related art, the present application provides a method for online regulating the zinc-acid ratio of the electrolytic circulation liquid, which can monitor the acid content value and the zinc content value in real time to adjust the zinc-acid ratio, and at the same time can effectively ensure the accuracy of the detection and the production quality of zinc electrolytic deposition.

[0006] The present application provides a method for online regulating the zinc-acid ratio of an electrolytic circulating liquid, the method being applied to a system for online detection of the zinc-acid ratio of an electrolytic circulating liquid, the system comprising: a sampling module for sampling an electrolytic circulating liquid, a zinc detection module for detecting zinc content, an acid detection module for detecting acid content, an equipment adjustment module and a controller;

[0007] The method includes:

[0008] After receiving the sampling instruction, the sampling module is controlled to sample the electrolytic circulating fluid, wherein the sampling instruction is issued by the controller at a fixed time, and the sampling module issues a sampling completion signal after completing the sampling;

[0009] After receiving the sampling completion signal, the control sends out an acid detection instruction and a zinc detection instruction, controls the zinc detection module to detect the zinc content to obtain the zinc content value, and controls the acid detection module to detect the acid content to obtain the acid content value;

[0010] According to the acid content value and the zinc content value, the control device adjustment module adjusts the zinc-acid ratio.

[0011] Optionally, in some embodiments of the present application:

[0012] The zinc detection module includes:

[0013] First response testing room;

[0014] A first detection liquid reaction device, comprising a first sampling peristaltic pump and a first electromagnetic stirring heating platform, wherein the first sampling peristaltic pump is used to extract the electrolytic circulating liquid in the sampling module to the first reaction detection chamber, and the first electromagnetic stirring heating platform is used to heat and stir the solution in the first reaction detection chamber;

[0015] A first reagent adding device, used for adding the detection reagent required for zinc detection to the first reaction detection chamber, including: a first dilution peristaltic pump, a zinc buffer solvent peristaltic pump, a sodium hexametaphosphate solution peristaltic pump, an ascorbic acid peristaltic pump, and a cresol indicator peristaltic pump;

[0016] The first reaction detection device includes a first EDTA calcium salt solution peristaltic pump, a first conductivity sensor and a first color sensor. The first EDTA calcium salt solution peristaltic pump is used to titrate and add a zinc reaction indicator into a first reaction detection chamber. The first conductivity sensor is installed in the first reaction detection chamber to detect the potential change in the first reaction detection chamber. The first color sensor is used to monitor the color change when the zinc reaction in the first reaction detection chamber occurs.

[0017] Optionally, in some embodiments of the present application:

[0018] The control zinc detection module detects the zinc content and obtains the zinc content value, including:

[0019] Controlling the first detection liquid reaction device to extract the electrolytic circulating liquid into the first reaction detection chamber;

[0020] Controlling the first electromagnetic stirring heating stage to perform heating and stirring;

[0021] Controlling the first reagent adding device to sequentially add the detection reagent to the first reaction detection chamber according to the set zinc reaction process;

[0022] Controlling the first EDTA calcium salt solution peristaltic pump to perform titration, and when the potential value detected by the first conductivity sensor meets the preset potential range, controlling the first EDTA calcium salt solution peristaltic pump to stop titration, and obtaining the zinc titer according to the number of titrations of the first EDTA calcium salt solution peristaltic pump;

[0023] Controlling the first color sensor to perform color detection to obtain a color result value, and determining whether the color result value meets a preset color value;

[0024] When the color result value meets the preset color value, the zinc content value is calculated by the amount of zinc standard solution and the zinc titer;

[0025] When the color result value does not meet the preset color value, the control sends a detection abnormality signal.

[0026] Optionally, in some embodiments of the present application:

[0027] The first reagent adding device is controlled to sequentially add the detection reagent to the first reaction detection chamber according to the set zinc reaction process, including:

[0028] Controlling the first dilution peristaltic pump to extract the diluent and input it into the first reaction detection chamber to dilute the sample;

[0029] Controlling the zinc buffer solvent peristaltic pump to extract the zinc buffer solvent and input it into the first reaction detection chamber;

[0030] Controlling the sodium hexametaphosphate solution peristaltic pump to extract the sodium hexametaphosphate solution and input it into the first reaction detection chamber;

[0031] Controlling the ascorbic acid peristaltic pump to extract the ascorbic acid solution and input it into the first reaction detection chamber;

[0032] Controlling the ascorbic acid peristaltic pump to extract the ascorbic acid solution and input it into the first reaction detection chamber;

[0033] The cresol indicator peristaltic pump is controlled to extract the cresol indicator and input it into the first reaction detection chamber.

[0034] Optionally, in some embodiments of the present application:

[0035] The acid detection module includes:

[0036] The second reaction detection room;

[0037] The second detection liquid reaction device comprises a second sampling peristaltic pump and a second electromagnetic stirring heating platform, wherein the second sampling peristaltic pump is used to extract the electrolytic circulating liquid in the sampling module to the second reaction detection chamber, and the second electromagnetic stirring heating platform is used to heat and stir the solution in the second reaction detection chamber;

[0038] A second reagent adding device, used for adding the detection reagent required for zinc detection to the second reaction detection chamber, including: a second dilution peristaltic pump, a second EDTA calcium salt solution peristaltic pump, and a methyl red reagent peristaltic pump;

[0039] The second reaction detection device includes a standard solution NaOH peristaltic pump, a second pH electrode and a second color sensor. The standard solution NaOH peristaltic pump is used to titrate and add an acid reaction indicator into the second reaction detection chamber. The second pH electrode is installed in the second reaction detection chamber to detect pH changes in the second reaction detection chamber. The second color sensor is used to monitor color changes when the acid reaction in the second reaction detection chamber occurs.

[0040] Optionally, in some embodiments of the present application:

[0041] The control acid detection module detects the acid content and obtains the acid content value, including:

[0042] Controlling the second detection liquid reaction device to extract the electrolytic circulating liquid into the second reaction detection chamber;

[0043] Controlling the second electromagnetic stirring heating stage to perform heating and stirring;

[0044] Controlling the second reagent adding device to sequentially add the detection reagent to the second reaction detection chamber according to the set acid reaction process;

[0045] The peristaltic pump of the standard solution NaOH is controlled to titrate, and when the pH value detected by the second pH electrode meets the preset pH value range, the peristaltic pump of the standard solution NaOH is controlled to stop titration, and the acid titer is obtained according to the titration times of the peristaltic pump of the standard solution NaOH;

[0046] Controlling the second color sensor to perform color detection to obtain a color result value, and determining whether the color result value meets a preset color value;

[0047] When the color result value meets the preset color value, the acid content value is calculated by the amount of acid standard solution and the acid titer;

[0048] When the color result value does not meet the preset color value, the control sends a detection abnormality signal.

[0049] Optionally, in some embodiments of the present application:

[0050] The second reagent adding device is controlled to add the detection reagent to the second reaction detection chamber in sequence according to the set acid reaction process, including:

[0051] Controlling the second dilution peristaltic pump to extract the diluent and input it into the second reaction detection chamber to dilute the sample;

[0052] Controlling the second EDTA calcium salt solution peristaltic pump to extract the EDTA calcium salt solution and input it into the second reaction detection chamber;

[0053] The methyl red reagent peristaltic pump is controlled to extract the methyl red reagent and input it into the second reaction detection chamber.

[0054] Optionally, in some embodiments of the present application:

[0055] The equipment regulating module includes: a zinc liquid control valve and an acid liquid control valve, wherein the zinc liquid control valve is used to control the delivery amount of zinc liquid in the electrolytic deposition circulating liquid, and the acid liquid control valve is used to control the delivery amount of acid liquid in the electrolytic deposition circulating liquid;

[0056] According to the acid content value and the zinc content value, the control device adjustment module performs zinc-acid ratio adjustment, specifically including:

[0057] When the difference between the acid content value and the zinc content value is greater than a first preset difference, the zinc liquid control valve is controlled to open to increase the delivery of the zinc liquid and reduce the relative concentration of the acid liquid;

[0058] When the difference between the acid content value and the zinc content value is less than the second preset difference, the acid control valve is controlled to open to increase the delivery of the acid to ensure that the acid concentration can meet the needs of the electrolytic reaction.

[0059] Optionally, in some embodiments of the present application:

[0060] The first reaction detection device also includes a first temperature sensor, which is installed in the first reaction detection chamber and is used to detect the temperature of the solution in the first reaction detection chamber;

[0061] The second reaction detection device also includes a second temperature sensor, which is installed in the second reaction detection chamber and is used to detect the temperature of the solution in the second reaction detection chamber.

[0062] Optionally, in some embodiments of the present application:

[0063] The controller includes the remote communication module, which is used for data transmission with an external system.

[0064] The technical solution provided by this application may have the following beneficial effects:

[0065] The zinc detection module of the present application can determine the zinc content in the sample through a series of control steps, and at the same time, by setting the first conductivity sensor and the first color sensor to cooperate with each other for detection, it can avoid the inaccurate detection caused by problems such as incomplete reaction and equipment damage, and effectively ensure the accuracy and reliability of zinc content detection; the acid detection module of the present application can determine the acid content in the sample through a series of control steps, and at the same time, by setting the second pH electrode and the second color sensor to cooperate with each other for detection, it can avoid the inaccurate detection caused by problems such as incomplete reaction and equipment damage, and effectively ensure the accuracy and reliability of acid content detection;

[0066] The present application can effectively ensure the high efficiency and stability of zinc electrowinning reaction and the production quality of zinc electrowinning by real-time monitoring of the acid content and the zinc content to adjust the zinc-acid ratio.

[0067] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0069] Figure 1 It is a structural schematic diagram of the method for online regulating the zinc-acid ratio of the electrowinning circulating liquid in the present application;

[0070] Figure 2 It is a structural schematic diagram of a system for online regulating the zinc-acid ratio of the electrolytic circulation liquid in the present application;

[0071] Figure 3 It is a communication structure diagram of a system for online regulating the zinc-acid ratio of electrolytic circulating liquid in this application.

[0072] Figure numerals: 1 - sampling module, 2 - zinc detection module, 3 - acid detection module, 4 - equipment adjustment module, 5 - controller. DETAILED DESCRIPTION

[0073] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0074] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0075] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0076] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] With the construction of automated and intelligent factories, some zinc smelting enterprises have begun to use online detection to detect the zinc acid ratio, that is, to sample and analyze the electrolyte through automated equipment. However, in this automated detection method, some parts still require manual participation in the detection, such as manual titration judgment and manual calculation. Affected by the experience and ability of the operators, the detection results have poor consistency, and the detection efficiency will also be affected. It still cannot meet the current production requirements for timely online detection, affecting production efficiency. For the detection of zinc acid ratios that are automated throughout the entire process, due to the lack of accurate judgment of the detection reaction, the detection results are inaccurate, affecting the production quality of zinc electrowinning.

[0078] In response to the above problems, an embodiment of the present application provides a method for online regulating the zinc-acid ratio of an electrolytic circulating liquid, which can monitor the acid content and the zinc content in real time to adjust the zinc-acid ratio, while effectively ensuring the accuracy of the detection and the production quality of zinc electrolytic deposition.

[0079] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0080] Figure 1 It is a structural schematic diagram of the method for online regulating the zinc-acid ratio of the electrowinning circulating liquid in the present application;

[0081] Figure 2 It is a structural schematic diagram of a system for online regulating the zinc-acid ratio of the electrolytic circulation liquid in the present application;

[0082] Figure 3 It is a communication structure diagram of a system for online regulating the zinc-acid ratio of electrolytic circulating liquid in this application.

[0083] See also Figure 1 A method for online regulating the zinc-acid ratio of an electrolytic circulating liquid, the method is applied to a system for online detecting the zinc-acid ratio of an electrolytic circulating liquid, the system comprising: a sampling module 1 for sampling an electrolytic circulating liquid, a zinc detection module 2 for detecting the zinc content, an acid detection module 3 for detecting the acid content, an equipment adjustment module 4 and a controller 5.

[0084] The controller 5 establishes electrical connections with the sampling module 1 , the acid detection module 3 , the zinc detection module 2 and the equipment adjustment module 4 respectively, and performs unified control through the controller 5 .

[0085] The method includes:

[0086] S100: after receiving the sampling instruction, the sampling module is controlled to sample the electrolytic circulating fluid, wherein the sampling instruction is issued regularly by the controller 5, and the sampling module 1 issues a sampling completion signal after completing the sampling.

[0087] The sampling module 1 comprises: a sampling pump and a sampling chamber. The two ends of the sampling pump are respectively connected to the electrolytic circulation tank and the sampling chamber through pipelines. Upon receiving the sampling instruction, the sampling pump is controlled to extract the electrolytic circulation liquid into the sampling chamber.

[0088] In this embodiment, by sampling regularly through the sampling module 1, samples of the electrolytic circulating fluid can be obtained at different time points, providing a detection basis for subsequent detection and ensuring the validity and accuracy of the detection results.

[0089] S200: After receiving the sampling completion signal, the control sends out an acid detection instruction and a zinc detection instruction, controls the zinc detection module to detect the zinc content to obtain the zinc content value, and controls the acid detection module to detect the acid content to obtain the acid content value.

[0090] Specifically, the zinc detection module 2 includes:

[0091] The first reaction detection chamber is a beaker for experiments.

[0092] The first detection liquid reaction device includes a first sampling peristaltic pump and a first electromagnetic stirring heating platform. The first sampling peristaltic pump is used to extract the electrolytic circulating liquid in the sampling module 1 to the first reaction detection chamber, and the first electromagnetic stirring heating platform is used to heat and stir the solution in the first reaction detection chamber; specifically, the liquid inlet end of the first sampling peristaltic pump is connected to the sampling chamber, and the liquid outlet end of the first sampling peristaltic pump is connected to the first reaction detection chamber; the first reaction detection chamber is arranged and placed on the first electromagnetic stirring heating platform.

[0093] The first reagent adding device is used to add the detection reagents required for zinc detection to the first reaction detection chamber, including: a first dilution peristaltic pump, a zinc buffer solvent peristaltic pump, a sodium hexametaphosphate solution peristaltic pump, an ascorbic acid peristaltic pump, and a cresol indicator peristaltic pump. Specifically, the liquid inlet end of each of the above peristaltic pumps is connected to the reagent bottle of the corresponding reagent through a pipeline, and the liquid outlet end of each of the above peristaltic pumps is connected to the first reaction detection chamber through a pipeline.

[0094] The first reaction detection device includes a first EDTA calcium salt solution peristaltic pump, a first conductivity sensor and a first color sensor. The first EDTA calcium salt solution peristaltic pump is used to titrate and add a zinc reaction indicator into the first reaction detection chamber. The first conductivity sensor is installed in the first reaction detection chamber to detect the potential change in the first reaction detection chamber. The first color sensor is used to monitor the color change when the zinc reaction in the first reaction detection chamber occurs. Specifically, the liquid inlet end of the first EDTA calcium salt solution peristaltic pump is connected to the reagent bottle of the corresponding reagent, and the liquid outlet end of the first EDTA calcium salt solution peristaltic pump is connected to the first reaction detection chamber; the first conductivity sensor is installed in the first reaction detection chamber; and the first color sensor is installed on the outer wall of the first reaction detection chamber.

[0095] Specifically: the zinc detection module 2 is controlled to detect the zinc content to obtain the zinc content value, including:

[0096] S211: Control the first detection liquid reaction device to extract the electrolytic circulating liquid into the first reaction detection chamber; specifically, the electrolytic circulating liquid is extracted into the first reaction detection chamber by the first sampling peristaltic pump, and the volume of the extracted solution is controlled by the peristaltic times of the first sampling peristaltic pump, specifically 1 ml.

[0097] S212: Control the first electromagnetic stirring heating stage to heat and stir; specifically, control the first electromagnetic stirring heating stage to heat to a temperature of 38° C., then keep the temperature constant, and control stirring.

[0098] S213: controlling the first reagent adding device to sequentially add the detection reagent to the first reaction detection chamber according to the set zinc reaction process;

[0099] Specifically, it includes:

[0100] The first dilution peristaltic pump is controlled to extract the diluent and input it into the first reaction detection chamber to dilute the sample; specifically, the diluent is pure water, the dilution ratio is 1:3, and the volume of the dilution is controlled by controlling the number of peristaltic movements of the first dilution peristaltic pump.

[0101] The zinc buffer solvent peristaltic pump is controlled to extract the zinc buffer solvent and input it into the first reaction detection chamber; specifically, the volume of the input zinc buffer solvent is 15 ml, and the volume of the zinc buffer solvent is controlled by controlling the peristaltic times of the zinc buffer solvent peristaltic pump.

[0102] The peristaltic pump of the sodium hexametaphosphate solution is controlled to extract the sodium hexametaphosphate solution and input it into the first reaction detection chamber; specifically, the volume of the input sodium hexametaphosphate solution is 10 ml, and the volume of the sodium hexametaphosphate solution is controlled by controlling the peristaltic times of the peristaltic pump of the sodium hexametaphosphate solution.

[0103] The ascorbic acid peristaltic pump is controlled to extract the ascorbic acid solution and input it into the first reaction detection chamber; specifically, the volume of the input ascorbic acid is 2-5 ml, and the volume of the ascorbic acid solution is adjusted by controlling the peristaltic times of the ascorbic acid peristaltic pump.

[0104] The cresol indicator peristaltic pump is controlled to extract the cresol indicator and input it into the first reaction detection chamber; specifically, the volume of the input cresol indicator is 0.1-0.2 ml, and the volume of the cresol indicator solution is adjusted by controlling the peristaltic times of the cresol indicator peristaltic pump.

[0105] In this embodiment, by adding reagents in sequence according to the set zinc reaction process, the reaction conditions for zinc detection can be effectively guaranteed, providing a reliable basis for subsequent zinc content detection.

[0106] S214: Control the first EDTA calcium salt solution peristaltic pump to perform titration, and when the potential value detected by the first conductivity sensor meets the preset potential range, control the first EDTA calcium salt solution peristaltic pump to stop titration, and obtain the zinc titer through the titration times of the first EDTA calcium salt solution peristaltic pump; specifically, the conductivity change of the reaction solution is monitored in real time by the first conductivity sensor, which can reflect the change of zinc ion concentration in the solution; wherein, the peristaltic times of the first EDTA calcium salt solution peristaltic pump are the titration times, and the zinc titer can be calculated through the peristaltic times of the first EDTA calcium salt solution peristaltic pump and the volume of each peristalsis.

[0107] S215: Control the first color sensor to perform color detection to obtain a color result value, and determine whether the color result value meets the preset color value; specifically, detecting the color change of the solution by the first color sensor can further reflect the change in the zinc ion concentration in the solution, wherein, when the detected color result is a signal corresponding to golden yellow, it indicates that the preset color value is met.

[0108] S216: When the color result value meets the preset color value, the zinc content value is calculated by the zinc standard solution dosage and the zinc titer; specifically, the zinc content value is calculated by the zinc titer and the standard solution dosage of the EDTA calcium salt solution.

[0109] S217: When the color result value does not meet the preset color value, the control sends a detection abnormality signal.

[0110] In this embodiment, the zinc detection module 2 can determine the zinc content in the sample through a series of control steps. At the same time, by setting the first conductivity sensor and the first color sensor to cooperate with each other for detection, it can avoid inaccurate detection caused by problems such as incomplete reaction and equipment damage, and effectively ensure the accuracy and reliability of zinc content detection.

[0111] Specifically: the acid detection module 3 includes:

[0112] The second reaction detection chamber is a beaker for experiments.

[0113] The second detection liquid reaction device includes a second sampling peristaltic pump and a second electromagnetic stirring heating platform. The second sampling peristaltic pump is used to extract the electrolytic circulating liquid in the sampling module 1 to the second reaction detection chamber, and the second electromagnetic stirring heating platform is used to heat and stir the solution in the second reaction detection chamber; specifically, the liquid inlet end of the second sampling peristaltic pump is connected to the sampling chamber, and the liquid outlet end of the second sampling peristaltic pump is connected to the second reaction detection chamber; the second reaction detection chamber is arranged and placed on the second electromagnetic stirring heating platform.

[0114] The second reagent adding device is used to add the detection reagent required for acid detection to the second reaction detection chamber, including: a second dilution peristaltic pump, a second EDTA calcium salt solution peristaltic pump, and a methyl red reagent peristaltic pump; specifically, the liquid inlet end of each of the above peristaltic pumps is connected to the reagent bottle of the corresponding reagent through a pipeline, and the liquid outlet end of each of the above peristaltic pumps is connected to the second reaction detection chamber through a pipeline.

[0115] The second reaction detection device includes a standard liquid NaOH peristaltic pump, a second PH electrode and a second color sensor. The standard liquid NaOH peristaltic pump is used to titrate and add an acid reaction indicator into the second reaction detection chamber. The second PH electrode is installed in the second reaction detection chamber to detect the PH change in the second reaction detection chamber. The second color sensor is used to monitor the color change when the acid reaction in the second reaction detection chamber occurs. Specifically, the liquid inlet end of the standard liquid NaOH peristaltic pump is connected to the reagent bottle of the corresponding reagent, and the liquid outlet end of the standard liquid NaOH peristaltic pump is connected to the second reaction detection chamber; the second PH electrode is installed in the second reaction detection chamber; and the second color sensor is installed on the outer wall of the second reaction detection chamber.

[0116] Specifically: the control acid detection module 3 detects the acid content to obtain the acid content value, including:

[0117] S221: Control the second detection liquid reaction device to extract the electrolytic circulating liquid into the second reaction detection chamber; specifically, the electrolytic circulating liquid is extracted into the second reaction detection chamber by the second sampling peristaltic pump, and the volume of the extracted solution is controlled by the peristaltic times of the second sampling peristaltic pump, specifically 1 ml.

[0118] S222: Control the second electromagnetic stirring heating stage to heat and stir; specifically, control the second electromagnetic stirring heating stage to heat to a temperature of 38° C., then keep the temperature constant, and control stirring.

[0119] S223: controlling the second reagent adding device to sequentially add the detection reagent to the second reaction detection chamber according to the set acid reaction process;

[0120] Specifically, it includes:

[0121] The second dilution peristaltic pump is controlled to extract the diluent and input it into the second reaction detection chamber to dilute the sample; specifically, the diluent is pure water, the dilution ratio is 1:2, and the volume of the dilution is controlled by controlling the number of peristaltic movements of the second dilution peristaltic pump.

[0122] The second EDTA calcium salt solution peristaltic pump is controlled to extract the EDTA calcium salt solution and input it into the second reaction detection chamber; specifically, the volume of the input EDTA calcium salt solution is 10 ml, and the volume of the EDTA calcium salt solution is controlled by controlling the number of peristaltic movements of the second EDTA calcium salt solution peristaltic pump.

[0123] The methyl red reagent peristaltic pump is controlled to extract the methyl red reagent and input it into the second reaction detection chamber; specifically, the volume of the input methyl red reagent is 0.1-0.2 ml, and the volume of the methyl red reagent is controlled by controlling the peristaltic times of the methyl red reagent peristaltic pump.

[0124] In this embodiment, by adding reagents in sequence according to the set acid reaction process, the reaction conditions for acid detection can be effectively guaranteed, providing a reliable basis for subsequent acid content detection.

[0125] S224: Control the peristaltic pump of the standard solution NaOH to perform titration. When the pH value detected by the second pH electrode meets the preset pH value range, control the peristaltic pump of the standard solution NaOH to stop titration, and obtain the acid titer through the titration times of the peristaltic pump of the standard solution NaOH; specifically, the pH value change of the reaction solution is monitored in real time by the second pH electrode, which can reflect the change of the acid ion concentration in the solution; wherein, the peristaltic number of the peristaltic pump of the standard solution NaOH is the titration number, and the acid titer can be calculated through the peristaltic number of the peristaltic pump of the standard solution NaOH and the volume of each peristalsis.

[0126] S225: Control the second color sensor to perform color detection to obtain a color result value, and determine whether the color result value meets the preset color value; specifically, detecting the color change of the solution through the second color sensor can further reflect the change in the acid ion concentration in the solution, wherein, when the detected color result is a signal corresponding to green-yellow, it indicates that the preset color value is met.

[0127] S226: When the color result value meets the preset color value, the acid content value is calculated by the amount of acid standard solution and the acid titer; specifically, the acid content value is calculated by the acid titer and the amount of standard solution NaOH.

[0128] S227: When the color result value does not meet the preset color value, the control sends a detection abnormality signal.

[0129] In this embodiment, the acid detection module 3 can determine the acid content in the sample through a series of control steps. At the same time, by setting a second pH electrode and a second color sensor for coordinated detection, it can avoid inaccurate detection caused by problems such as incomplete reaction and equipment damage, and effectively ensure the accuracy and reliability of acid content detection.

[0130] S300: According to the acid content value and the zinc content value, the control device adjustment module adjusts the zinc-acid ratio.

[0131] Specifically: the equipment regulating module 4 includes: a zinc liquid control valve and an acid liquid control valve, the zinc liquid control valve is used to control the delivery amount of zinc liquid in the electrolytic deposition circulating liquid, and the acid liquid control valve is used to control the delivery amount of acid liquid in the electrolytic deposition circulating liquid;

[0132] According to the acid content value and the zinc content value, the control device adjustment module 4 performs zinc-acid ratio adjustment, specifically including:

[0133] When the difference between the acid content value and the zinc content value is greater than the first preset difference, the zinc liquid control valve is controlled to open to increase the delivery of the zinc liquid and reduce the relative concentration of the acid liquid. The first preset difference indicates that the acid content value is greater than the zinc content value. By increasing the delivery amount of the zinc liquid, the relative concentration of the acid liquid can be quickly reduced. By adjusting the zinc-acid ratio, the normal zinc electrolytic reaction is guaranteed.

[0134] When the difference between the acid content value and the zinc content value is less than the second preset difference, the acid control valve is controlled to open to increase the delivery of the acid to ensure that the acid concentration can meet the needs of the electrolytic reaction. The second preset difference indicates that the acid content value is less than the zinc content value. By increasing the delivery amount of the acid, the relative concentration of the zinc solution can be quickly reduced, and by adjusting the zinc-acid ratio, the normal electrolytic zinc reaction is ensured.

[0135] In this embodiment, the zinc-acid ratio is adjusted by real-time monitoring of the difference between the acid content and the zinc content, which can ensure the efficient and stable zinc electrowinning reaction and the production quality of zinc electrowinning.

[0136] Specifically: the first reaction detection device further includes a first temperature sensor, which is installed in the first reaction detection chamber and is used to detect the temperature of the solution in the first reaction detection chamber;

[0137] The second reaction detection device also includes a second temperature sensor, which is installed in the second reaction detection chamber and is used to detect the temperature of the solution in the second reaction detection chamber.

[0138] In this embodiment, the temperature in the reaction chamber can be monitored to ensure the stability of the reaction conditions, and at the same time, safety hazards such as overheating can be prevented to ensure the safety of the reaction process.

[0139] Specifically: the controller 5 includes the remote communication module, which is used for data transmission with the external system.

[0140] In this embodiment, the remote communication module can send the data inside the controller 5 to the external system, receive instructions or data from the external system, and remotely control the equipment adjustment module 4 to facilitate management.

[0141] The technical solution in the embodiment of the present application includes the following beneficial effects:

[0142] The zinc detection module 2 of the present application can determine the zinc content in the sample through a series of control steps, and at the same time, by setting a first conductivity sensor and a first color sensor for coordinated detection, it can avoid inaccurate detection caused by problems such as incomplete reaction and equipment damage, and effectively ensure the accuracy and reliability of zinc content detection; the acid detection module 3 of the present application can determine the acid content in the sample through a series of control steps, and at the same time, by setting a second pH electrode and a second color sensor for coordinated detection, it can avoid inaccurate detection caused by problems such as incomplete reaction and equipment damage, and effectively ensure the accuracy and reliability of acid content detection;

[0143] The present application can monitor the acid content and the zinc content in real time to adjust the zinc-acid ratio, which can effectively ensure the high efficiency and stability of the zinc electrowinning reaction and the production quality of zinc electrowinning.

[0144] Finally, it should be noted that, in this article, relationships such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms include, include or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0145] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0146] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0147] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.

[0148] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A method for online regulation of zinc-acid ratio of electrowinning circulating liquid, characterized in that: The method is applied to a system for online detection of zinc-acid ratio of electrolytic circulating liquid, the system comprising: a sampling module for sampling electrolytic circulating liquid, a zinc detection module for detecting zinc content, an acid detection module for detecting acid content, an equipment adjustment module and a controller; The method comprises: After receiving the sampling instruction, the sampling module is controlled to sample the electrolytic circulating fluid, wherein the sampling instruction is issued by the controller at a fixed time, and the sampling module issues a sampling completion signal after completing the sampling; After receiving the sampling completion signal, the control sends out an acid detection instruction and a zinc detection instruction, controls the zinc detection module to detect the zinc content to obtain the zinc content value, and controls the acid detection module to detect the acid content to obtain the acid content value; According to the acid content value and the zinc content value, the control device adjustment module adjusts the zinc-acid ratio.

2. The method according to claim 1, characterized in that: The zinc detection module comprises: First response testing room; A first detection liquid reaction device, comprising a first sampling peristaltic pump and a first electromagnetic stirring heating platform, wherein the first sampling peristaltic pump is used to extract the electrolytic circulating liquid in the sampling module to the first reaction detection chamber, and the first electromagnetic stirring heating platform is used to heat and stir the solution in the first reaction detection chamber; A first reagent adding device, used for adding the detection reagent required for zinc detection to the first reaction detection chamber, including: a first dilution peristaltic pump, a zinc buffer solvent peristaltic pump, a sodium hexametaphosphate solution peristaltic pump, an ascorbic acid peristaltic pump, and a cresol indicator peristaltic pump; The first reaction detection device includes a first EDTA calcium salt solution peristaltic pump, a first conductivity sensor and a first color sensor. The first EDTA calcium salt solution peristaltic pump is used to titrate and add a zinc reaction indicator into a first reaction detection chamber. The first conductivity sensor is installed in the first reaction detection chamber to detect potential changes in the first reaction detection chamber. The first color sensor is used to monitor color changes when the zinc reaction in the first reaction detection chamber occurs.

3. The method according to claim 2, characterized in that: The controlling zinc detection module to detect the zinc content to obtain the zinc content value includes: Controlling the first detection liquid reaction device to extract the electrolytic circulating liquid into the first reaction detection chamber; Controlling the first electromagnetic stirring heating stage to perform heating and stirring; Controlling the first reagent adding device to sequentially add the detection reagent to the first reaction detection chamber according to the set zinc reaction process; Controlling the first EDTA calcium salt solution peristaltic pump to perform titration, and when the potential value detected by the first conductivity sensor meets the preset potential range, controlling the first EDTA calcium salt solution peristaltic pump to stop titration, and obtaining the zinc titer according to the number of titrations of the first EDTA calcium salt solution peristaltic pump; Controlling the first color sensor to perform color detection to obtain a color result value, and determining whether the color result value meets a preset color value; When the color result value meets the preset color value, the zinc content value is calculated by the amount of zinc standard solution and the zinc titer; When the color result value does not meet the preset color value, the control sends a detection abnormality signal.

4. The method according to claim 3, characterized in that: The controlling the first reagent adding device to sequentially add the detection reagent to the first reaction detection chamber according to the set zinc reaction process comprises: Controlling the first dilution peristaltic pump to extract the diluent and input it into the first reaction detection chamber to dilute the sample; controlling the zinc buffer solvent peristaltic pump to extract the zinc buffer solvent and input it into the first reaction detection chamber; Controlling the sodium hexametaphosphate solution peristaltic pump to extract the sodium hexametaphosphate solution and input it into the first reaction detection chamber; controlling the ascorbic acid peristaltic pump to extract the ascorbic acid solution and input it into the first reaction detection chamber; controlling the ascorbic acid peristaltic pump to extract the ascorbic acid solution and input it into the first reaction detection chamber; The cresol indicator peristaltic pump is controlled to extract the cresol indicator and input it into the first reaction detection chamber.

5. The method according to claim 4, characterized in that: The acid detection module comprises: The second reaction detection room; The second detection liquid reaction device comprises a second sampling peristaltic pump and a second electromagnetic stirring heating platform, wherein the second sampling peristaltic pump is used to extract the electrolytic circulating liquid in the sampling module to the second reaction detection chamber, and the second electromagnetic stirring heating platform is used to heat and stir the solution in the second reaction detection chamber; A second reagent adding device, used for adding the detection reagent required for zinc detection to the second reaction detection chamber, including: a second dilution peristaltic pump, a second EDTA calcium salt solution peristaltic pump, and a methyl red reagent peristaltic pump; The second reaction detection device includes a standard solution NaOH peristaltic pump, a second pH electrode and a second color sensor. The standard solution NaOH peristaltic pump is used to titrate and add an acid reaction indicator into the second reaction detection chamber. The second pH electrode is installed in the second reaction detection chamber to detect pH changes in the second reaction detection chamber. The second color sensor is used to monitor color changes when the acid reaction in the second reaction detection chamber occurs.

6. The method according to claim 5, characterized in that: The controlling acid detection module detects the acid content to obtain the acid content value, including: Controlling the second detection liquid reaction device to extract the electrolytic circulating liquid into the second reaction detection chamber; Controlling the second electromagnetic stirring heating stage to perform heating and stirring; Controlling the second reagent adding device to sequentially add the detection reagent to the second reaction detection chamber according to the set acid reaction process; The standard solution NaOH peristaltic pump is controlled to titrate, and when the pH value detected by the second pH electrode meets the preset pH value range, the standard solution NaOH peristaltic pump is controlled to stop titration, and the acid titer is obtained according to the titration times of the standard solution NaOH peristaltic pump; Controlling the second color sensor to perform color detection to obtain a color result value, and determining whether the color result value meets a preset color value; When the color result value meets the preset color value, the acid content value is calculated by the amount of acid standard solution and the acid titer; When the color result value does not meet the preset color value, the control sends a detection abnormality signal.

7. The method according to claim 6, characterized in that: The controlling the second reagent adding device to sequentially add the detection reagent to the second reaction detection chamber according to the set acid reaction process comprises: Control the second dilution peristaltic pump to extract the diluent and input it into the second reaction detection chamber to dilute the sample; control the second EDTA calcium salt solution peristaltic pump to extract the EDTA calcium salt solution and input it into the second reaction detection chamber; The methyl red reagent peristaltic pump is controlled to extract the methyl red reagent and input it into the second reaction detection chamber.

8. The method according to claim 7, characterized in that: The equipment adjustment module includes: a zinc liquid control valve and an acid liquid control valve, wherein the zinc liquid control valve is used to control the delivery amount of zinc liquid in the electrolytic deposition circulating liquid, and the acid liquid control valve is used to control the delivery amount of acid liquid in the electrolytic deposition circulating liquid; According to the acid content value and the zinc content value, the control device adjustment module performs zinc-acid ratio adjustment, specifically including: When the difference between the acid content value and the zinc content value is greater than a first preset difference, the zinc liquid control valve is controlled to open to increase the delivery of the zinc liquid and reduce the relative concentration of the acid liquid; When the difference between the acid content value and the zinc content value is less than the second preset difference, the acid control valve is controlled to open to increase the delivery of the acid to ensure that the acid concentration can meet the needs of the electrolytic reaction.

9. The method according to claim 1, characterized in that: The first reaction detection device further includes a first temperature sensor, which is installed in the first reaction detection chamber and is used to detect the temperature of the solution in the first reaction detection chamber; The second reaction detection device further includes a second temperature sensor, which is installed in the second reaction detection chamber and is used to detect the temperature of the solution in the second reaction detection chamber.

10. The method according to any one of claims 1 to 9, characterized in that: The controller includes the remote communication module, which is used for data transmission with an external system.

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