Extraction process line operation state regulating device and method and extraction separation system

Abstract

This invention relates to a control device and method for the operation of an extraction production line, as well as an extraction separation system, belonging to the field of hydrometallurgical technology. The control device includes an imaging component and an online pH meter. The imaging component is equipped to capture real-time images of the separated aqueous phase and organic phase during the extraction separation process, respectively. The online pH meter is used to detect the pH of the aqueous phase. Using this control device, the operating status of the extraction production line can be continuously monitored, facilitating timely adjustments to extraction operating parameters by operators. This avoids problems such as monitoring interruptions and delays caused by manual inspections, thereby improving the operational accuracy and quality of the extraction production line.

Description

Technical Field

[0001] This application relates to the field of hydrometallurgical extraction technology, and more specifically, to a device and method for controlling the operating status of an extraction production line and an extraction separation system. Background Technology

[0002] Currently, in the nickel-cobalt metal extraction industry, most production lines use multi-stage series-connected mixed clarification extraction box-type extraction equipment to form fractionation extraction production lines.

[0003] Taking the nickel-cobalt sulfate solution extraction and purification and nickel-cobalt extraction and separation production line as an example, the production operation is generally carried out by on-site operators who conduct on-site inspections and adjust the production control parameters based on the observation results, which has a lag. Summary of the Invention

[0004] Based on the above-mentioned shortcomings, this application provides a device and method for regulating the operating status of an extraction production line and an extraction separation system, so as to partially or completely improve the problem of lag in the adjustment of extraction separation parameters in related technologies.

[0005] This application is implemented as follows:

[0006] In a first aspect, an example of this application provides a control device for the operating status of an extraction production line, suitable for controlling the process parameters of an industrial extraction production line that extracts, purifies, and separates nickel-cobalt sulfate solution using a mixing and clarifying extraction tank; the control device includes an imaging component and an online pH meter; the imaging component is equipped to capture real-time images of the aqueous phase and the organic phase after extraction and separation, respectively; the online pH meter is equipped to detect the pH of the aqueous phase.

[0007] In the above implementation process, the imaging component is used to capture real-time images of the extracted and separated aqueous and organic phases. The acquired real-time images can be processed in real time to promptly determine whether the colors of the aqueous and organic phases deviate from the standard colors. Furthermore, an online pH meter is used to monitor the pH of the aqueous phase in real time. This allows operators to assess the separation status of the two phases based on color comparison results and pH measurement results, and adjust the corresponding extraction and separation process parameters accordingly, thereby mitigating the detection lag caused by manual inspection.

[0008] In conjunction with the first aspect, in one possible implementation, the control device further includes a control component; the control component is simultaneously connected to the imaging component and the online pH meter signal to compare the real-time image with a standard colorimetric card.

[0009] Optionally, the control components adjust the process parameters based on color comparison results and online pH meter readings.

[0010] In the above implementation process, the control component can be used to compare the real-time image with the standard colorimetric card, so that the operator can adjust the extraction and separation process parameters according to the comparison results of the control component.

[0011] In conjunction with the first aspect, in one possible implementation, the imaging component includes multiple color display plates and a camera; one color display plate is configured to be immersed at a predetermined distance below the surface of the aqueous phase and / or organic phase; the camera is configured to be positioned opposite the color display plate to capture the aqueous or organic phase located between the color display plate and the camera, thereby acquiring a real-time image of the aqueous or organic phase.

[0012] In the above process, the color display plate is immersed at a preset distance below the liquid surface to be detected, and the aqueous or organic phase on the color display plate is photographed by a camera. This can reduce the influence of the color of the environment, such as the tank used to hold the aqueous or organic phase, on the color of the real-time image, thereby improving the accuracy of the color comparison results.

[0013] In conjunction with the first aspect, in one possible implementation, the imaging assembly further includes: a support having a base, and a height adjustment member disposed on the base. The base is configured to connect to a tank for holding an organic or aqueous phase to secure the height adjustment member to the bottom of the tank; the height adjustment member is configured to connect to a colorimetric plate to adjust a preset distance.

[0014] In the above implementation process, the height adjustment component set on the base can adjust the height of the color display plate in the tank, and thus adjust the distance between the color display plate and the liquid surface, so as to avoid the color of the real-time image being affected by the different depths of the color display plate under the liquid surface.

[0015] In conjunction with the first aspect, in one possible implementation, the height adjustment component includes a telescopic rod and a buoyancy adjustment component; the buoyancy adjustment component is connected to the movable end of the telescopic rod to adjust the telescopic length of the telescopic rod; the color display plate is connected to the buoyancy adjustment component;

[0016] Optionally, buoyancy adjustment components include floats or float plates.

[0017] In the above implementation process, a buoyancy adjustment component is set at the movable end of the telescopic rod. The telescopic length can be adjusted by the magnitude of the buoyancy of the buoyancy adjustment component in the liquid, thereby limiting the distance between the color display plate and the liquid surface.

[0018] In conjunction with the first aspect, in one possible implementation, the imaging component further includes a level sensor equipped for detecting the level of the aqueous and / or organic phases.

[0019] In conjunction with the first aspect, in one possible implementation, the control device further includes an alarm; the alarm is signal-connected to the liquid level sensor.

[0020] In the above implementation process, the alarm is connected to the liquid level sensor signal, which can detect the liquid level in real time based on the liquid level signal transmitted by the liquid level sensor. An alarm is issued when the liquid level is too high or too low, so that the operator can adjust the extraction process parameters.

[0021] In conjunction with the first aspect, in one possible implementation, the control device further includes:

[0022] The cleaning components include a windshield wiper and a first blower; the windshield wiper is mounted on the camera lens, and the first blower is equipped to blow the lens.

[0023] In the above process, using the windshield wipers to clean the camera lens and using the first blower to blow the lens can reduce the chance of water vapor or volatile mist condensing on the lens, thereby improving the clarity of the shot.

[0024] In conjunction with the first aspect, in one possible implementation, the cleaning component includes a second purger; the second purger is configured to purge the pH probe of an online pH meter.

[0025] During testing, the pH probe needs to be continuously immersed in the process liquid. Over extended periods, suspended solids or oil stains in the process liquid may adhere to the pH probe, affecting testing accuracy. Using a second purger to clean the pH probe can improve its cleanliness, thereby enhancing testing accuracy.

[0026] In conjunction with the first aspect, in one possible implementation, the camera is equipped with a fill light.

[0027] In the above implementation process, setting up a fill light at the camera can further improve the shooting quality and reduce the impact of varying ambient light levels on the color of real-time images.

[0028] In a second aspect, an example of this application provides an extraction separation system, including an extraction separation tank and a control device provided in the first aspect. The extraction separation tank is configured to extract and separate a nickel-cobalt sulfate solution; the extraction separation tank includes a clarification chamber having an aqueous phase weir and an organic phase weir; imaging components are used to acquire images of the organic phase at the front end of the organic phase weir and an image of the aqueous phase in the aqueous phase weir; an online pH meter is installed in the aqueous phase weir.

[0029] In the above implementation process, the control device provided in the first aspect is used to monitor the process liquid in the aqueous phase weir and the organic phase weir in real time. The extraction and separation parameters in the extraction and separation tank can be adjusted in a timely manner according to the monitoring results, thereby improving the extraction and separation efficiency and quality.

[0030] In conjunction with the second aspect, in one possible implementation, the extraction separation tank further includes a tank cover, which is simultaneously disposed in the clarification chamber, the organic phase weir tank, and the aqueous phase weir tank; the imaging component includes a camera, which is disposed in the tank cover; and the tank cover is provided with an exhaust vent corresponding to the clarification chamber, the organic phase weir tank, and / or the aqueous phase weir tank.

[0031] In the above implementation process, installing a tank cover can reduce the loss or contamination of the process liquid inside the tank, and the tank cover can also be used to fix the camera. Installing exhaust vents in the organic phase weir tank and the aqueous phase weir tank can regulate the gas flow within the tank, improving the camera's image quality.

[0032] In conjunction with the second aspect, in one possible implementation, the extraction separation tank further includes a gas isolation baffle and an organic phase guide plate; the gas isolation baffle has a top end and a bottom end; the top end is fixed to the tank cover, and the bottom end extends 3-5 mm below the organic phase liquid surface in the clarification chamber; and an imaging component for imaging the organic phase is disposed between the end plate of the organic phase weir and the gas isolation baffle. The organic phase guide plate and the gas isolation baffle are arranged longitudinally and transversely, and are disposed 30-100 mm below the gas isolation baffle, with both ends of the organic phase guide plate extending 100-300 mm beyond the gas isolation baffle.

[0033] In the above implementation process, the top of the gas barrier baffle is fixed to the tank cover, dividing the tank cover to facilitate the placement of a camera used to capture the organic phase on one side of the gas barrier baffle. The gas barrier baffle reduces the amount of volatile organic phase at the camera, improving the camera's image quality. Furthermore, an organic phase guide plate is installed below the gas barrier baffle to minimize the impact on the two-phase separation effect caused by the change in the flow direction of the organic phase at the gas barrier baffle.

[0034] In a third aspect, an example of this application provides a control method for regulating the extraction and separation parameters of nickel-cobalt sulfate. The control method includes: using an imaging component to photograph the aqueous phase and organic phase after extraction and separation, respectively, to acquire images of the aqueous and organic phases; comparing the acquired images with a standard colorimetric card; and detecting the pH of the aqueous phase using an online pH meter; adjusting the extraction and separation parameters based on the color comparison results and the online pH meter readings.

[0035] In the above implementation process, the camera component is used to capture real-time images of the aqueous and organic phases after extraction and separation. The real-time images acquired by the camera can be compared with the standard colors to determine whether the colors of the aqueous and organic phases deviate from the standard colors. At the same time, the pH of the aqueous phase is detected in real time using an online pH meter, so that the operator can judge the separation status of the two phases and adjust the corresponding extraction and separation parameters based on the color comparison results and pH detection results.

[0036] Optionally, the method for comparing the acquired image with a standard colorimetric card includes: using an image processing system to perform color recognition on the image, converting the color characteristics of the aqueous and organic phases into digital signals in HSV or RGB format, and comparing them with the digital signals of the standard colorimetric card. If the comparison result exceeds the set range, the image processing system issues an alarm signal.

[0037] Using the above-mentioned control methods, the extraction and separation effect can be continuously monitored and adjusted accordingly, reducing detection interruptions caused by manual inspections and improving real-time online detection efficiency.

[0038] In conjunction with the third aspect, in one possible implementation, the extraction separation includes: a saponification section, an extraction section, a washing section, a back-extraction section, and a water washing section;

[0039] Optionally, the imaging component is used to photograph the aqueous phase and organic phase separated in the extraction section and perform color comparison. If the color of the image of the aqueous phase and / or organic phase deviates from the standard color, the amount of saponifying alkali added in the saponification section is adjusted. At the same time, the pH of the aqueous phase separated in the extraction section is detected by an online pH meter. If the pH is higher than the extraction equilibrium value, the amount of extract added in the extraction section is increased.

[0040] In the above-described process, the extraction and separation includes a saponification section, an extraction section, a washing section, a back-extraction section, and a water washing section, which can improve the extraction and separation effect. Furthermore, by using imaging components and an online pH meter to monitor the corresponding process sections, the test results can be obtained in a timely manner, allowing for adjustments to the feed and discharge conditions of each section, further enhancing the extraction and separation effect. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 A cross-sectional schematic diagram of the first extraction and separation system provided as an example in this application;

[0043] Figure 2 A cross-sectional schematic diagram of the second extraction and separation system provided as an example in this application;

[0044] Figure 3 A cross-sectional schematic diagram of the third extraction and separation system provided as an example in this application;

[0045] Figure 4 A schematic diagram of the installation of the gas barrier and organic phase guide plate provided as examples in this application;

[0046] Figure 5 A schematic diagram of the support and color display plate provided as examples in this application.

[0047] Icons: 1-Extraction and separation system; 10-Control device; 11-Picture assembly; 111-Color display plate; 112-Camera; 113-Bracket; 1131-Base; 1132-Height adjustment component; 11321-Telescopic rod; 11322-Buoyancy adjustment component; 114-Liquid level sensor; 12-Online pH meter; 13-Control assembly; 131-Alarm; 14-Cleaning component; 141-Windshield wiper; 142-First purger; 143-Second purger; 20-Clarification chamber; 21-Aqueous phase weir; 22-Organic phase weir; 23-Tank cover; 24-Exhaust vent; 31-Gas barrier baffle; 311-Top; 312-Bottom; 32-Organic phase guide plate; D1-First preset distance; D2-Second preset distance; D3-Third preset distance; S1-Organic phase liquid surface. Detailed Implementation

[0048] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0049] This application provides a method for controlling the operating status of an extraction production line, used to regulate the extraction and separation of nickel-cobalt sulfate. The control method includes:

[0050] The aqueous and organic phases after extraction and separation were photographed using an imaging device to obtain images of the aqueous and organic phases respectively; the acquired images were compared with a standard colorimetric card, and the pH of the aqueous phase was detected using an online pH meter; the extraction and separation parameters were adjusted based on the color comparison results and the online pH meter readings.

[0051] In the extraction and separation process of nickel-cobalt sulfate, the aqueous and organic phases separated in different stages typically exhibit different colors. Therefore, this application utilizes a camera to capture real-time images of the separated aqueous and organic phases during the extraction and separation process. The real-time images acquired by the camera can be processed to promptly determine whether the colors of the aqueous and organic phases deviate from the standard color chart. If the color of the real-time image of either the aqueous or organic phase deviates from the standard color, it indicates poor separation, and the process parameters for that stage can be adjusted accordingly. The images acquired by the camera can be video footage or still images at a specific moment. Adjustable process parameters include the flow ratio and magnitude of the two phases, the pH of the aqueous phase, etc.

[0052] Meanwhile, an online pH meter is used to monitor the pH of the aqueous phase in real time, so that operators can judge the extraction effect and adjust the corresponding extraction and separation parameters based on the pH test results.

[0053] The control method provided in this application can not only continuously monitor the extraction and separation effect and make corresponding adjustments to reduce the detection interruption caused by manual inspection, but also conduct traceability analysis on the operation of the extraction production line, thereby improving the precise control of the extraction production line operation.

[0054] This application does not limit the specific extraction and separation parameters, and relevant personnel can make corresponding adjustments according to different processes.

[0055] In some possible implementations, the extraction separation includes a saponification section, an extraction section, a washing section, a back-extraction section, and a water washing section, and the process parameters of each section can be detected and controlled using a control method.

[0056] For example, P204 extractant can be used to extract and remove impurities such as copper, manganese, zinc, iron, calcium, aluminum, and cadmium from nickel-cobalt sulfate solutions. Extraction separation parameters may include: controlling the saponification rate (the amount of substance reacting with the alkaline substance / the total amount of substance to be processed): 40–60%; extraction O / A ratio (the volume ratio of the organic phase to the aqueous phase): 0.7–1.5; extraction equilibrium pH (raffinate pH): 3.8–4.2; washing O / A ratio: 8–20; washing acid outlet pH: 1.5–3.8.

[0057] For example, when controlling the extraction and separation process, an imaging component can be used to photograph and compare the colors of the aqueous and organic phases separated in the extraction section. If the color of one or both of the aqueous and organic phases deviates from the standard color, the amount of saponifying alkali added in the saponification section can be adjusted. At the same time, an online pH meter can be used to detect the pH of the aqueous phase separated in the extraction section. If the pH deviates from the equilibrium value, parameters such as the flow ratio and flow rate of the two phases, and the acidity or alkalinity of the aqueous phase can be adjusted.

[0058] For example, in an industrial extraction production line for removing impurities such as copper, manganese, zinc, iron, calcium, aluminum, and cadmium from nickel-cobalt sulfate solution using P204 extraction, the line consists of a saponification section, an extraction section, a washing section, a back-extraction section, and a water washing section. During operation, staff in the control room analyze the color comparison between the key aqueous and organic phases and the standard color chart, the pH value of the aqueous solution, and the separation status of the two phases based on the detection results of the imaging components and the online pH meter, and remotely adjust the extraction operation technical parameters. Normal operation control indicators for extraction: Saponification rate: 40-60%, Extraction O / A: 0.7-1.5, Extraction equilibrium pH (raffinate pH): 4.2, Feed pH: 3.6-4.0, Washing O / A: 15, Controlled washing acid inlet pH: 0.8-1.5, Washing acid outlet pH: 2.5-3.8; Key stage color: Washing key stage organic: light green, Aqueous phase: light purple or light blue; Both phases are clear, with good phase separation and flow; When the raffinate pH increases, the feed rate or organic feed rate can be adjusted; When phase separation is poor and emulsification occurs, the amount of saponifying alkali added can be reduced, or the organic flow rate can be increased. An appropriate amount of acid can be added to lower the pH of the extraction system, reduce the throughput, or shut down the system; When the washing key stage organic color is bluish or the aqueous phase color deepens, the washing acid feed rate should be appropriately increased.

[0059] Furthermore, examples of this application also provide an extraction and separation system 1 for separating and extracting nickel cobalt sulfate.

[0060] Please see Figure 1 The extraction and separation system 1 includes a control device 10 and an extraction and separation tank.

[0061] The extraction separation tank is equipped for the extraction and separation of a nickel-cobalt sulfate solution. The extraction separation tank includes a clarification chamber 20, which has an aqueous phase weir 21 and an organic phase weir 22.

[0062] Furthermore, tank covers 23 can be installed on the aqueous phase weir 21 and the organic phase weir 22 to reduce contamination of the process liquid (e.g., dust and other impurities falling into the contaminated process liquid) and loss (e.g., loss of process liquid due to evaporation).

[0063] Furthermore, an exhaust vent 24 can be provided on the tank cover 23, and the amount of gas discharged from the aqueous phase weir tank 21 and the organic phase weir tank 22 can be adjusted by adjusting the exhaust vent 24.

[0064] Please continue reading. Figure 1 The control device 10 includes a camera assembly 11 and an online pH meter 12.

[0065] The imaging component 11 is equipped to capture real-time images of the separated aqueous phase and the organic phase, respectively. The online pH meter 12 is equipped to detect the pH of the aqueous phase, so that the operator can adjust the extraction and separation process parameters based on the comparison results of the real-time images and the standard images, as well as the pH detection results.

[0066] The imaging component 11 and the online pH meter 12 in the control device 10 will be described in further detail below with reference to the accompanying drawings.

[0067] The imaging component 11 is used to capture the corresponding process liquid and obtain a real-time image of the process liquid.

[0068] To reduce the impact of the environment on the color of the captured real-time images, in one possible implementation, please refer to... Figure 2 The imaging assembly 11 includes multiple color display plates 111 and a camera 112. Each color display plate 111 is configured to be immersed at a preset distance below the surface of the aqueous or organic phase. The camera 112 is configured to be positioned opposite the color display plate 111 to capture images of the aqueous or organic phase located between the color display plate 111 and the camera 112, thereby acquiring real-time images of the aqueous or organic phase.

[0069] This application does not limit the specific configuration of the color display panel 111; relevant personnel can make appropriate selections as needed. For example, the color display panel 111 can be a white color display panel.

[0070] This application does not limit the specific configuration of the camera 112; relevant personnel can make appropriate selections as needed. In one possible implementation, the camera 112 is an explosion-proof and corrosion-resistant camera.

[0071] Furthermore, to improve the shooting quality of camera 112, please refer to... Figure 3 The control device 10 also includes a cleaning component 14. The cleaning component 14 includes a windshield wiper 141 and a first blower 142. The windshield wiper 141 is disposed on the lens of the camera 112, and the first blower 142 is configured to blow away fog adhering to the lens.

[0072] This application does not limit the specific arrangement of the wiper 141. In one possible implementation, the wiper 141 can be installed on the housing of the camera 112, and the wiper head of the wiper 141 can be used to wipe the lens of the camera 112.

[0073] This application does not limit the specific configuration of the first blower 142. In one possible implementation, the blower nozzle of the first blower 142 is disposed on the housing of the camera 112.

[0074] For further information, please refer to [link / reference]. Figure 3The extraction separation tank also includes a gas isolation baffle 31 and an organic phase guide plate 32. The gas isolation baffle 31 has a top end 311 and a bottom end 312. The top end 311 is fixed to the tank cover 23, and the bottom end 312 extends a first preset distance D1 below the organic phase liquid surface S1. A camera 112 for capturing images of the organic phase is positioned between the organic phase weir end plate and the gas isolation baffle 31. The organic phase guide plate 32 is arranged longitudinally and transversely with the gas isolation baffle 31, and is positioned a second preset distance D2 below the gas isolation baffle 31. (See also...) Figure 4 The first preset distance D1 is 3-5 mm, and the second preset distance D2 is 30-100 mm. The two ends of the organic phase guide plate 32 extend beyond the gas isolation baffle 31 by a third preset distance D3, which is approximately 100-300 mm.

[0075] Furthermore, in order to reduce the degree of color deviation in the real-time image captured due to the different distances between the color display plate 111 and the liquid surface, in one possible embodiment, the imaging assembly 11 further includes a bracket 113 for adjusting the distance between the color display plate 111 and the liquid surface.

[0076] Please see Figure 5 The support 113 includes a base 1131 and a height adjustment member 1132 disposed on the base 1131. The base 1131 is configured to connect to an organic phase weir 22 for holding an organic phase, or an aqueous phase weir 21 for holding an aqueous phase, so as to fix the height adjustment member 1132 in the corresponding organic phase weir 22 or aqueous phase weir 21. The height adjustment member 1132 is configured to connect to a colorimetric plate 111 to adjust a preset distance between the colorimetric plate 111 and the liquid surface.

[0077] When using the imaging component 11 for imaging, the bracket 113 connected to the color display plate 111 can be placed in the corresponding tank, so that the color display plate 111 is immersed below the liquid surface. When the liquid level in the tank changes, or when the imaging component 11 is used in different tanks to image process liquids at different liquid depths, the height of the color display plate 111 in the tank can be adjusted using the height adjustment component 1132 provided on the base 1131, thereby adjusting the distance between the color display plate 111 and the liquid surface.

[0078] This application does not limit the specific configuration of the base 1131, and relevant personnel can make corresponding adjustments as needed.

[0079] In some possible implementations, the base 1131 can be made of an acid- and alkali-resistant corrosion-resistant material. The base 1131 has a certain weight and a contact area with the tank, which can keep it stable in the corresponding tank, so that the color display plate 111 and the height adjustment component 1132 can be stably positioned in the process liquid in the tank.

[0080] This application does not limit the specific configuration of the height adjustment component 1132; relevant personnel can make the appropriate selection as needed.

[0081] In one possible implementation, please continue reading Figure 5 The height adjustment component 1132 includes a telescopic rod 11321 and a buoyancy adjustment component 11322. The buoyancy adjustment component 11322 is connected to the movable end of the telescopic rod 11321 to adjust the telescopic length of the rod. The color display plate 111 is connected to the buoyancy adjustment component 11322, thereby adjusting the distance between the color display plate 111 and the liquid surface.

[0082] The specific type of telescopic rod 11321 can be selected by relevant personnel as needed. For example, the telescopic rod 11321 may include multiple sleeves of different diameters, with the sleeve having a smaller outer diameter that can move axially within the sleeve with a larger outer diameter. Alternatively, the telescopic rod 11321 may be an elastic structural component such as a spring.

[0083] The specific type of buoyancy adjuster 11322 can be selected by relevant personnel as needed. For example, buoyancy adjuster 11322 includes a float or a float plate. When it is necessary to adjust the buoyancy of the float or float plate, the floating height of the float or float plate can be adjusted by adding or removing a certain amount of counterweight.

[0084] The online pH meter 12 is used to detect the pH of a liquid in real time. This application does not limit the specific type of the online pH meter 12; commonly used industrial online pH detection equipment can be selected.

[0085] For example, the online pH meter 12 can be an explosion-proof pH meter with remote transmission capability.

[0086] For further information, please refer to [link / reference]. Figure 3 A second purger 143 can be installed at the pH probe. The second purger 143, for example, is a compressed air purger, which can delay the adhesion of extracted suspended solids, oil and other substances to the probe, ensuring measurement accuracy and extending the probe cleaning and maintenance cycle.

[0087] For further information, please refer to [link / reference]. Figure 3 The imaging component 11 also includes a liquid level sensor 114 for detecting the liquid level depth.

[0088] Furthermore, this application does not limit the specific type of the liquid level sensor 114, and those skilled in the art can make the appropriate selection as needed. In some possible embodiments, the liquid level sensor 114 may be a float-type liquid level sensor, a float-ball type liquid level sensor, or a hydrostatic liquid level sensor.

[0089] For further information, please refer to [link / reference]. Figure 3Furthermore, a control component 13 can be set up, which is simultaneously connected to the imaging component 11 and the online pH meter 12 to process the imaging results of the imaging component 11.

[0090] Furthermore, the extraction and separation parameters can be adjusted using the control component 13 based on the captured images obtained from the processing and the detection results of the online pH meter 12.

[0091] Furthermore, this application does not limit the specific configuration of the control component 13. For example, the control component 13 includes a computer host and a monitor. The computer host can be connected to the camera 112 and the online pH meter 12 via wireless or wired signals. The computer host is equipped with a corresponding visual judgment system or image processing system to analyze the difference between the color of the real-time image and the color of the standard colorimetric card, and to determine whether the color of the real-time image deviates from the standard color.

[0092] For further information, please refer to [link / reference]. Figure 3 The control component 13 is also equipped with an alarm 131. The alarm 131 is connected to the liquid level sensor 114. When the liquid level sensor 114 detects that the liquid level is too low or too high, an alarm is issued, which makes it easier for the operator to adjust the extraction process parameters using the control component 13.

[0093] Furthermore, the control component 13 can also be connected to the raw material delivery pump or stirring pump in the corresponding extraction and separation tank, so as to adjust the raw material feed rate or separation parameters in the corresponding extraction process according to the received pH result and real-time image analysis result.

[0094] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for controlling the operating status of an extraction production line, suitable for controlling the process parameters of an industrial extraction production line that extracts, purifies, and separates nickel-cobalt sulfate solutions using a mixing and clarifying extraction tank, characterized in that... The control device includes an imaging component and an online pH meter; The imaging component is equipped to capture real-time images of the aqueous phase and the organic phase after extraction and separation, respectively; the online pH meter is equipped to detect the pH of the aqueous phase; The imaging components are used to acquire images of the organic phase at the front end of the organic phase weir and images of the aqueous phase in the aqueous phase weir; the online pH meter is installed in the aqueous phase weir; the imaging components include multiple colorimetric plates and a camera; one of the colorimetric plates is immersed at a preset distance below the liquid surface of the aqueous phase and / or the organic phase; the imaging components also include a height adjustment component installed on the base to adjust the height of the colorimetric plate in the tank, thereby adjusting the distance between the colorimetric plate and the liquid surface; the camera is configured to be positioned opposite the colorimetric plate to capture images of the aqueous phase or the organic phase located between the colorimetric plate and the camera, acquiring real-time images of the aqueous phase or the organic phase; The control device also includes a control component; the control component is simultaneously connected to the imaging component and the online pH meter signal to compare the real-time image with a standard colorimetric card.

2. The conditioning device of claim 1, wherein, The control component adjusts the process parameters based on the color comparison results and the detection results of the online pH meter.

3. The conditioning device of claim 1, wherein, The imaging component also includes: A support having the base and the height adjustment member disposed on the base; the base is configured to connect to a tank for holding the organic phase or the aqueous phase, so as to fix the height adjustment member to the bottom of the tank.

4. The conditioning device of claim 3, wherein, The height adjustment component includes a telescopic rod and a buoyancy adjustment component; the buoyancy adjustment component is connected to the movable end of the telescopic rod to adjust the telescopic length of the telescopic rod; the color display plate is connected to the buoyancy adjustment component.

5. The control device according to claim 4, characterized in that, The buoyancy adjustment component includes a float or a float plate.

6. The conditioning device of any one of claims 1-5, wherein, The imaging assembly also includes a liquid level sensor, configured to detect the liquid level of the aqueous phase and / or the organic phase.

7. The conditioning device of claim 6, wherein, The control device also includes an alarm, which is connected to the liquid level sensor.

8. The conditioning device of claim 1, wherein, The control device further includes: A cleaning component includes a windshield wiper and a first blower; the windshield wiper is disposed on the lens of the camera, and the first blower is configured to blow the lens.

9. The conditioning device of claim 8, wherein, The cleaning component includes a second purger; the second purger is configured to purge the pH probe of the online pH meter.

10. The conditioning device of claim 1, wherein, The camera is equipped with a fill light.

11. An extractive separation system characterized by, include: An extraction separation tank is configured to extract and separate a nickel-cobalt sulfate solution; the extraction separation tank includes a clarification chamber having an aqueous phase weir and an organic phase weir. The control device according to any one of claims 1-10; the imaging component is used to acquire images of the organic phase at the front end of the organic phase weir and images of the aqueous phase in the aqueous phase weir; the online pH meter is installed in the aqueous phase weir.

12. The extractive separation system of claim 11, wherein, The extraction separation tank also includes a tank cover, which is simultaneously disposed in the organic phase weir tank, the clarification chamber, and the aqueous phase weir tank; the imaging component includes a camera, which is disposed in the tank cover; the tank cover is provided with an exhaust vent corresponding to the clarification chamber, the organic phase weir tank, and / or the aqueous phase weir tank.

13. The extractive separation system of claim 12, wherein, The extraction separation tank also includes a gas isolation baffle and an organic phase guide plate; the gas isolation baffle has a top end and a bottom end, the top end is fixed to the tank cover, and the bottom end extends 3-5 mm below the organic phase liquid surface in the clarification chamber; and the imaging component for imaging the organic phase is disposed between the end plate of the organic phase weir and the gas isolation baffle. The organic phase guide plate and the gas barrier are arranged in a longitudinal and transverse manner, and are located 30-100mm below the gas barrier. The two ends of the organic phase guide plate extend 100-300mm beyond the gas barrier.

14. A method for regulating the operating state of an extraction train for regulating the process parameters of the extraction separation of nickel-cobalt sulphate, characterized in that, The control method includes: The imaging component in the control device according to any one of claims 1 to 10 is used to capture images of the aqueous phase and the organic phase after extraction and separation, respectively, to obtain images of the aqueous phase and the organic phase; the acquired images are compared with a standard colorimetric card, and the pH of the aqueous phase is detected using the online pH meter; the extraction and separation parameters are adjusted according to the results of the color comparison and the detection results of the online pH meter.

15. The method of claim 14, wherein the modulating is performed by a method comprising: The method for comparing the acquired image with a standard colorimetric card includes: using an image processing system to perform color recognition on the image, converting the color characteristics of the aqueous phase and the organic phase into digital signals in HSV or RGB format, and comparing them with the digital signals of the standard colorimetric card. If the comparison result exceeds a set range, the image processing system issues an alarm signal.

16. The method of claim 14, wherein the step of modulating comprises: The extraction and separation process includes: a saponification section, an extraction section, a washing section, a back-extraction section, and a water washing section; The imaging component is used to photograph and compare the colors of the aqueous phase and organic phase separated in the extraction section. If the colors of the images of the aqueous phase and / or the organic phase deviate from the standard colors, the amount of saponifying alkali added in the saponification section is adjusted. At the same time, the pH of the aqueous phase separated in the extraction section is detected by the online pH meter. If the pH is higher than the extraction equilibrium value, the amount of extract added in the extraction section is increased.

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