Precious metal ion extraction device and extraction method thereof

Abstract

The invention discloses a precious metal ion extraction device which comprises a shell and a device supporting plate, a plurality of supporting rods are fixedly installed on the device supporting plate, an extraction supporting frame is fixedly installed on the supporting rods, and an extraction mechanism is arranged on the extraction supporting frame; the extraction mechanism comprises an extraction box, the extraction box is fixedly installed on an extraction supporting frame, an extraction transmission shaft is rotatably inserted into the extraction box, and after a servo motor is started, the extraction transmission shaft drives an extraction stirring shaft to rotate at a high speed, so that an extraction agent and a raw material solution are rapidly and fully mixed, and the mass transfer efficiency is greatly improved; in the stirring process, the side wall cleaning plate is tightly attached to the inner side wall of the extraction box, precious metal ions and impurities possibly adsorbed on the wall face are continuously removed, precious metal loss caused by wall face adsorption is avoided, and the recovery rate of precious metal is further increased.

Description

Technical Field

[0001] The present invention belongs to the technical field of precious metal extraction, and particularly relates to a precious metal ion extraction device and an extraction method thereof. Background Technique

[0002] With the rapid development of modern industry, precious metals are increasingly widely used in many fields such as electronics, chemical industry, aerospace, etc., and their demand is also continuously rising. Traditional precious metal extraction methods such as chemical precipitation method, pyrometallurgy, etc. have many drawbacks. The chemical precipitation method often requires a large amount of chemical reagents, which not only has a high cost, but also generates a large amount of waste residues and other wastes, causing great pressure on the environment. At the same time, the extraction efficiency of this method for some low-concentration precious metal solutions is low, and it is difficult to meet the requirements of high recovery rate of precious metals in industrial production. Pyrometallurgy requires high-temperature conditions, consumes a large amount of energy, has a high equipment investment cost, and generates a large amount of harmful gases and dust during the smelting process, seriously polluting the environment. In addition, some existing extraction devices have problems such as insufficient combination of the extractant and precious metal ions and unsatisfactory separation effect during the extraction process, resulting in the extraction purity and recovery rate of precious metals being difficult to be effectively guaranteed, seriously restricting the efficient development of the precious metal extraction industry. Therefore, there is an urgent need for an efficient precious metal ion extraction device and method to solve the current problems. Summary of the Invention

[0003] The purpose of the present invention is to provide a precious metal ion extraction device to solve the problems of insufficient combination of the extractant and precious metal ions and unsatisfactory separation effect proposed in the above background technique.

[0004] In a first aspect, the present invention provides a precious metal ion extraction device, including:

[0005] It includes a device support plate. On the device support plate, a plurality of support rods are fixedly installed. On the support rods, an extraction support frame is fixedly installed. An extraction mechanism is provided on the extraction support frame;

[0006] The extraction mechanism includes an extraction tank. The extraction tank is fixedly installed on the extraction support frame. An extraction drive shaft is rotatably inserted into the interior of the extraction tank. A plurality of extraction stirring shafts are provided on the extraction drive shaft. A side wall cleaning plate is fixedly installed at one end of the extraction stirring shaft away from the extraction drive shaft. The side wall cleaning plate is in close fit with the inner side wall of the extraction tank. A servo motor is fixedly installed on the device support plate. The output end of the servo motor rotates through the device support plate and is fixedly connected to the extraction drive shaft. A collection tank is provided at one end of the extraction tank away from the device support plate.

[0007] In a possible implementation manner of the first aspect, a support pad is provided at one end of the support rod away from the device support plate.

[0008] In a possible implementation of the first aspect, a feed pipe is provided on the device support plate, the feed pipe penetrates the extraction tank, and a sealing cover is provided on the feed pipe.

[0009] In a possible implementation of the first aspect, a discharge pipe is provided on the side of the extraction tank away from the servo motor, and the discharge pipe is in threaded fit with the collection tank.

[0010] In a possible implementation of the first aspect, a separation mesh plate is provided inside the collection tank, filter mesh holes are formed on the separation mesh plate, and the separation mesh plate is closely attached to the inner side wall of the discharge pipe.

[0011] In a possible implementation of the first aspect, a drain pipe is provided on the collection tank, and a control valve is provided on the drain pipe.

[0012] Compared with the prior art, the present invention provides a precious metal ion extraction and extraction device, which has the following beneficial effects:

[0013] First, after starting the servo motor, the extraction drive shaft drives the extraction stirring shaft to rotate at a high speed, so that the extractant and the raw material solution are quickly and fully mixed, greatly improving the mass transfer efficiency and shortening the time required for the extraction reaction to reach equilibrium. During the stirring process, the side wall cleaning plate closely adheres to the inner side wall of the extraction tank, continuously removing the precious metal ions and impurities that may be adsorbed on the wall surface, avoiding the loss of precious metals caused by wall surface adsorption, and further improving the recovery rate of precious metals.

[0014] Second, the support system composed of the device support plate and the support rod provides a stable foundation for the entire extraction mechanism, ensuring that during the extraction process, even when the equipment is in a high-frequency vibration state, each component can still maintain an accurate relative position and will not affect the extraction effect due to shaking or displacement. After the extraction is completed, the organic phase solution flows into the collection tank through the discharge pipe, and the separation mesh plate can effectively intercept the solid impurities in the solution, ensuring that the collected organic phase solution has a higher purity and facilitating subsequent separation and purification operations.

[0015] In the second aspect, the present invention provides an extraction method for a precious metal ion extraction and extraction device, including:

[0016] Collecting the concentration data of precious metal ions and the physical and chemical parameters of the solution in the solution to be treated, setting the extraction process control parameters corresponding to the solution to be treated based on the concentration data and the physical and chemical parameters of the solution, and performing an initial extraction treatment on the solution to be treated in the extraction tank based on the extraction process control parameters and the servo motor to obtain an extraction solution;

[0017] Detect the residual amount of precious metal ions in the extraction solution to obtain the ionic residual concentration data of precious metal ions, analyze the performance characterization parameters corresponding to the extractant in the extraction solution, and calculate the separation efficiency index of the extraction solution by combining the performance characterization parameters and the residual concentration data;

[0018] After the initial extraction treatment, collect the flow characteristic data and solution color data corresponding to the extraction solution in the extraction tank. Based on the flow characteristic data and the solution color data, calculate the stirring uniformity corresponding to the extraction solution in the extraction tank. Based on the stirring uniformity and the separation efficiency index, evaluate the solution extraction performance of the extraction solution. Based on the solution extraction performance, formulate an extraction optimization strategy for the solution to be treated, and perform the extraction treatment of precious metal ions according to the extraction optimization strategy to obtain the extraction result.

[0019] In a possible implementation manner of the second aspect, setting the extraction process control parameters corresponding to the solution to be treated based on the concentration data and the physical and chemical parameters of the solution includes:

[0020] Construct a parameter matrix of the concentration data and the physical and chemical parameters of the solution, and analyze the key parameter combinations in the parameter matrix;

[0021] Analyze the ionic chemical properties of the precious metal ions, and determine the type of extractant for the solution to be treated based on the ionic chemical properties;

[0022] Query the extraction operation specifications corresponding to the type of extractant;

[0023] Construct a parameter-specification association model between the key parameter combinations and the extraction operation specifications;

[0024] Optimize the parameter-specification association model to obtain a parameter decision model;

[0025] Input the concentration data and the physical and chemical parameters of the solution into the parameter decision model, and output the extraction process control parameters corresponding to the solution to be treated through the parameter decision model.

[0026] In a possible implementation manner of the second aspect, calculating the separation efficiency index of the extraction solution by combining the performance characterization parameters and the residual concentration data includes:

[0027] Calculate the parameter weight corresponding to each parameter in the performance characterization parameters, and extract the residual concentration value from the residual concentration data;

[0028] Perform standardization processing on the residual concentration value to obtain a standard concentration value;

[0029] Combined with the parameter weights, the standard concentration value, and the performance characterization parameters, the separation efficiency index of the extraction solution can be calculated using the following formula:

[0030]

[0031] A represents the separation efficiency index of the extraction solution, and β i represents the parameter weight corresponding to the i-th characterization parameter in the performance characterization parameters, D i represents the parameter value corresponding to the i-th characterization parameter in the performance characterization parameters, k represents the concentration adjustment coefficient, B represents the standard concentration value, i represents the serial number of the performance characterization parameter, and n represents the number of parameters of the performance characterization parameter.

[0032] In a possible implementation manner of the second aspect, calculating the stirring uniformity corresponding to the extraction solution in the extraction tank based on the flow characteristic data and the solution color data includes:

[0033] Determining the solution extraction flow rate in the extraction tank based on the flow characteristic data;

[0034] Calculating the flow rate uniformity of the extraction tank during the extraction process according to the extraction flow rate;

[0035] Determining the solution color value in the extraction tank based on the solution color data, and calculating the color uniformity of the extraction tank during the extraction process based on the solution color value;

[0036] Combining the flow rate uniformity and the color uniformity to calculate the stirring uniformity corresponding to the extraction solution in the extraction tank.

[0037] It can be seen that by setting the extraction process control parameters based on the concentration data and the solution physical and chemical parameters, the present invention can greatly improve the pertinence and effectiveness of the extraction process, make the extraction operation more accurately adapt to the characteristics of the solution to be treated, thereby optimizing the extraction effect of precious metal ions, improving the efficiency and stability of the entire extraction process, and reducing reagent consumption and costs at the same time. By detecting the residual amount of precious metal ions in the extraction solution, the present invention can accurately grasp the residual situation of precious metals in the solution after extraction, which plays a key role in evaluating the extraction effect, optimizing the extraction process, and improving the recovery rate of precious metals, providing an important data basis for subsequent analysis and calculation. By collecting the flow characteristic data and the solution color data of the extraction solution to calculate the stirring uniformity, the present invention can comprehensively evaluate the mixing effect during the extraction process from different angles, providing an important basis for subsequent evaluation of the extraction performance. Description of the Drawings

[0038] The accompanying drawings are used to provide a further understanding of the present invention and form a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0039] Figure 1 FIG. is a schematic perspective view of a noble metal ion extraction device according to an embodiment of the present invention;

[0040] Figure 2 FIG. is a schematic cross-sectional view of the structure of a noble metal ion extraction device according to an embodiment of the present invention;

[0041] Figure 3 is Figure 2 a schematic enlarged view of the structure at A in;

[0042] Figure 4 FIG. is a flowchart of an extraction method for a noble metal ion extraction device according to an embodiment of the invention;

[0043] In the figure: 1. Device support plate; 11. Support rod; 12. Extraction support frame; 13. Support foot pad; 2. Extraction mechanism; 21. Extraction tank; 22. Extraction transmission shaft; 23. Extraction stirring shaft; 24. Side wall cleaning plate; 25. Servo motor; 26. Feed pipe; 27. Sealing cover; 28. Collection tank; 29. Discharge pipe; 211. Separation mesh plate; 212. Drain pipe; 213. Control valve. Detailed implementation manners

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] Please refer to Figure 1, which is a schematic three-dimensional structure diagram of the precious metal ion extraction device proposed by the present invention, includes a device support plate 1. The device support plate 1 serves as the basic support structure of the entire device, providing a stable platform for the installation of subsequent components. The material is selected as high-strength corrosion-resistant alloy steel to ensure that it can withstand the overall weight of the device and the corrosion effects that various chemical reagents may bring during the extraction process. A plurality of support rods 11 are fixedly installed on the device support plate 1. The support rods 11 are made of stainless steel, having good rigidity and corrosion resistance. An extraction support frame 12 is fixedly installed on the support rods 11. An extraction mechanism 2 is provided on the extraction support frame 12. A support pad 13 is provided at one end of the support rod 11 away from the device support plate 1. The support pad 13 is made of rubber material, having good anti-slip performance and shock absorption effect, which can effectively reduce the vibration and displacement generated during the operation of the device, and at the same time avoid scratching damage to the placement plane, ensuring the stability and safety of the device during operation.

[0046] Please refer to Figure 2 , which is a schematic cross-sectional structure diagram of the precious metal ion extraction device proposed in an embodiment of the present invention. The extraction mechanism 2 includes an extraction tank 21, which is made of acid and alkali-resistant organic glass material, facilitating the operator to directly observe the reaction situation during the extraction process. Its shape is a cylinder. The extraction tank 21 is fixedly installed on the extraction support frame 12. An extraction drive shaft 22 is rotatably inserted into the interior of the extraction tank 21. The extraction drive shaft 22 is made of high-strength stainless steel material, and its surface is chrome-plated, having good wear resistance and corrosion resistance, and can operate stably for a long time under high-speed rotation. A plurality of extraction stirring shafts 23 are provided on the extraction drive shaft 22. A side wall cleaning plate 24 is fixedly installed at one end of the extraction stirring shaft 23 away from the extraction drive shaft 22. The side wall cleaning plate 24 is made of flexible rubber material, and a wear-resistant polytetrafluoroethylene coating is provided on its outer surface. The side wall cleaning plate 24 is closely attached to the inner side wall of the extraction tank 21, and can timely remove the impurities and a small amount of precious metal ions adsorbed on the wall surface during the stirring process, ensuring the purity and efficiency of the extraction process, and at the same time avoiding wall fouling from affecting the heat transfer and mass transfer effects. A servo motor 25 is fixedly installed on the device support plate 1. The output end of the servo motor 25 rotates through the device support plate 1 and is fixedly connected to the extraction drive shaft 22. A collection tank 28 is provided at one end of the extraction tank 21 away from the device support plate 1. A feed pipe 26 is provided on the device support plate 1. The feed pipe 26 penetrates through the extraction tank 21, and a sealing cover 27 is provided on the feed pipe 26.

[0047] Please refer to Figure 3 , for Figure 2Schematic enlarged view of the structure at A in the figure. On the side of the extraction tank 21 away from the servo motor 25, there is a discharge pipe 29. The discharge pipe 29 is in threaded fit with the collection tank 28, which facilitates the transfer of the organic phase solution containing precious metal ions into the collection tank 28 for subsequent processing after the extraction is completed. Inside the collection tank 28, there is a separation mesh plate 211. The separation mesh plate 211 is provided with filter mesh holes, which can effectively separate the solid impurities and incompletely dissolved particulate matter in the solution. And the separation mesh plate 211 is closely attached to the inner side wall of the discharge pipe 29. On the collection tank 28, there is a drain pipe 212, and a control valve 213 is provided on the drain pipe 212.

[0048] Working principle and usage process of a precious metal ion extraction and extraction device of the present invention: When in use, the raw material solution containing precious metal ions and the extractant are injected into the extraction tank 21 through the feed pipe 26, and then the sealing cover 27 is closed to prevent the solution from volatilizing and external impurities from entering. The servo motor 25 is started, and the servo motor 25 drives the extraction transmission shaft 22 to start rotating. The extraction stirring shaft 23 on the extraction transmission shaft 22 rotates rapidly, so that the added extractant and the raw material solution are fully mixed in the extraction tank 21. During the stirring process, the side wall cleaning plate 24 at the end of the extraction stirring shaft 23 can not only prevent the adsorption and residue of precious metal ions on the inner side wall of the extraction tank 21, but also further promote the mixing uniformity of the solution, improve the mass transfer efficiency, and ensure that the extraction reaction proceeds more fully. During the extraction process, due to the affinity between the extractant and the precious metal ions, the precious metal ions will gradually transfer from the aqueous phase to the organic phase. After sufficient stirring and extraction for a period of time, the organic phase solution containing precious metal ions gradually rises under the action of the density difference and flows into the collection tank 28 through the discharge pipe 29. When the solution passes through the discharge pipe 29, the separation mesh plate 211 in the collection tank 28 will filter it, intercepting the possible solid impurity particles in the solution, ensuring that the collected organic phase solution has a high purity, which is beneficial to the further separation and purification of precious metals in the subsequent process. When the extraction process is completed, the control valve 213 of the drain pipe 212 on the collection tank 28 is opened to discharge the small amount of aqueous phase solution that may remain in the lower layer, realizing the preliminary separation of the organic phase and the aqueous phase, and obtaining a higher purity organic phase solution containing precious metal ions.

[0049] Refer to Figure 4 As shown, it is the extraction method of the precious metal ion extraction and extraction device proposed in an embodiment of the present invention, including:

[0050] S1. Collect the concentration data of precious metal ions and the physicochemical parameters of the solution in the solution to be treated. Based on the concentration data and the physicochemical parameters of the solution, set the extraction process control parameters corresponding to the solution to be treated. Based on the extraction process control parameters and the servo motor, perform an initial extraction treatment on the solution to be treated in the extraction tank to obtain an extraction solution.

[0051] Based on the concentration data and the physical and chemical parameters of the solution, the present invention can set the extraction process control parameters, which can greatly improve the pertinence and effectiveness of the extraction process, make the extraction operation more accurately adapt to the characteristics of the solution to be treated, thereby optimizing the extraction effect of precious metal ions, enhancing the efficiency and stability of the entire extraction process, and reducing reagent consumption and costs at the same time.

[0052] Among them, the concentration data of precious metal ions in the solution to be treated refers to quantitative information such as the mass concentration or molar concentration of various precious metal ions (such as gold, silver, platinum, etc.) contained in the solution. The physical and chemical parameters of the solution cover parameter indicators related to the physical and chemical properties of the solution, such as the acidity and alkalinity (pH value), redox potential, conductivity, viscosity, etc. The extraction process control parameters are various set values used to regulate the extraction process, including but not limited to parameters such as the dosage of the extractant, extraction temperature, extraction time, stirring speed, and phase separation conditions. The extraction solution is a mixed system containing the extractant loaded with precious metal ions and the raffinate after the initial extraction treatment. Further, the acquisition of the concentration data of precious metal ions and the physical and chemical parameters of the solution in the solution to be treated can be achieved by means of professional analytical instruments. For example, an inductively coupled plasma mass spectrometer (ICP-MS) is used to measure the concentration of precious metal ions, a pH meter measures the acidity and alkalinity, and a conductivity meter measures the conductivity, etc.

[0053] As an embodiment of the present invention, setting the extraction process control parameters corresponding to the solution to be treated based on the concentration data and the physical and chemical parameters of the solution includes:

[0054] Construct a parameter matrix of the concentration data and the physical and chemical parameters of the solution, and analyze the key parameter combinations in the parameter matrix;

[0055] Analyze the ionic chemical properties of the precious metal ions, and determine the type of extractant for the solution to be treated based on the ionic chemical properties;

[0056] Query the extraction operation specifications corresponding to the type of extractant;

[0057] Construct a parameter-specification correlation model between the key parameter combinations and the extraction operation specifications;

[0058] Optimize the parameter-specification correlation model to obtain a parameter decision model;

[0059] Input the concentration data and the physical and chemical parameters of the solution into the parameter decision model, and output the extraction process control parameters corresponding to the solution to be treated through the parameter decision model.

[0060] Among them, the concentration data and the physical and chemical parameters of the solution are integrated in matrix form to facilitate the analysis of the mutual relationship between key parameters; the key parameter combination is a subset of parameters that have a significant impact on the extraction process; the extraction operation specification includes the recommended process parameter range when the extractant is in normal use; the parameter-specification correlation model is to establish the mapping relationship between key parameters and extraction operation specifications; the parameter decision model is a model that can quickly and accurately give the optimal extraction process control parameters according to the input solution parameters after training.

[0061] Optionally, the parameter matrix of the concentration data and the physical and chemical parameters of the solution can be constructed through data preprocessing and feature engineering methods, and algorithms such as principal component analysis (PCA) can be used to analyze the key parameter combination; the appropriate type of extractant can be determined based on existing chemical databases and literature; the corresponding extraction operation specifications can be obtained from the technical manuals provided by extractant suppliers or relevant industry standards; the parameter-specification correlation model can be optimized using deep learning algorithms (such as neural networks). During the training process, the weights and thresholds of the model are continuously adjusted to enable it to accurately predict the best extraction process control parameters according to the input parameters. When the concentration data of the solution to be processed (such as the gold ion concentration is 10 ppm, the silver ion concentration is 5 ppm, etc.) and the physical and chemical parameters of the solution (the pH value is 4.5, the conductivity is 500 μS / cm, etc.) are input, the parameter decision model outputs extraction process control parameters such as the extractant dosage of 50 ml / L, the extraction temperature of 35 °C, the extraction time of 30 minutes, and the stirring speed of 800 rpm.

[0062] Based on the extraction process control parameters and the servo motor, the solution to be processed is initially extracted in the extraction tank using the preset extractant to obtain the extraction solution. The processing process is as follows: First, according to the extraction process control parameters, the preset extractant is accurately measured and added to the extraction tank. Then, the solution to be processed is transported to the extraction tank through a pipeline, and the servo motor is started to drive the stirring device to operate, and the extractant and the solution to be processed are fully mixed at the set stirring speed. During the extraction process, the extraction temperature is maintained within the set range through the temperature control system, and the extraction time is controlled using a timer. After the extraction is completed, the stirring and heating are stopped, and the mixture in the extraction tank is allowed to stand for a period of time to initially separate the organic phase (the extractant loaded with precious metal ions) and the aqueous phase (the raffinate). Finally, the organic phase and the aqueous phase are separately collected through a liquid separation device to obtain the extraction solution. The organic phase can enter the subsequent stripping and purification steps, and the aqueous phase is treated accordingly according to environmental protection requirements.

[0063] S2. Detect the residual amount of precious metal ions in the extraction solution to obtain the ion residual concentration data of precious metal ions, analyze the performance characterization parameters corresponding to the extractant in the extraction solution, and calculate the separation efficiency index of the extraction solution by combining the performance characterization parameters and the residual concentration data.

[0064] By detecting the residual amount of precious metal ions in the extraction solution, the present invention can accurately grasp the residual situation of precious metals in the solution after extraction, which plays a key role in evaluating the extraction effect, optimizing the extraction process, and improving the recovery rate of precious metals, providing an important data basis for subsequent analysis and calculation. Among them, the ion residual concentration data refers to the concentration information of precious metal ions remaining in the raffinate after the extraction operation, and its unit can be ppm (milligrams per liter), mol / L, etc., accurately reflecting the completion degree and quality of the extraction process.

[0065] Further, the process of detecting the residual amount of precious metal ions in the extraction solution is as follows: identify the chemical composition characteristics of the extraction solution, determine the appropriate detection and analysis method based on the characteristics; prepare the corresponding detection instruments and reagents according to the detection and analysis method; perform pretreatment operations on the extraction solution to meet the working requirements of the detection instruments; use the selected detection instrument to detect and analyze the pretreated extraction solution to obtain the original detection data; perform data correction and calibration processing on the original detection data to obtain accurate ion residual concentration data of precious metal ions.

[0066] Among them, the chemical composition characteristics include information such as the acidity and alkalinity in the solution, the types and concentrations of impurities contained, and possible interfering substances; the detection and analysis methods can be atomic absorption spectrometry (AAS), inductively coupled plasma mass spectrometry (ICP-MS), spectrophotometry, etc., and different methods are applicable to different precious metal ions and solution systems; the detection instruments such as atomic absorption spectrometers, ICP-MS mass spectrometers, etc., and the reagents include various standard solutions, buffer solutions, color reagents, etc.; the pretreatment operations may involve steps such as dilution, filtration, and acidity and alkalinity adjustment of the solution; the data correction and calibration processing is to eliminate factors such as instrument errors and background interference, and is achieved by means such as the standard addition method, blank experiment, and multi-point calibration curve.

[0067] Optionally, the chemical composition characteristics of the extraction solution can be identified through chemical analysis software and database queries; according to industry standards and instrument operation manuals, professional technicians determine the appropriate detection and analysis methods; prepare the corresponding detection instruments and reagents according to the requirements of the instrument manufacturer, and perform preheating, debugging, and calibration of the instruments; use precision measuring tools such as pipettes and volumetric flasks to perform accurate pretreatment operations such as dilution and filtration on the extraction solution; use reference materials to calibrate the detection instruments in real time, and use professional data processing software to perform corrections and calibrations on the original detection data, such as background subtraction and curve fitting, to obtain accurate ion residue concentration data of precious metal ions.

[0068] By analyzing the performance characterization parameters corresponding to the extractant in the extraction solution, the present invention can deeply understand the working state and performance of the extractant during the extraction process, providing another key dimension for comprehensively evaluating the extraction effect. Among them, the performance characterization parameters are quantitative indicators reflecting the extraction ability, selectivity, stability, and regeneration performance of the extractant for precious metal ions under specific extraction conditions, such as the distribution coefficient, loading capacity, selectivity coefficient, chemical stability index, etc. of the extractant. These parameters can be obtained through experimental determination, theoretical calculation, and comparison with known standard data.

[0069] Furthermore, the analysis of the performance characterization parameters corresponding to the extractant in the extraction solution can be achieved by means of professional chemical analysis software and databases, combined with experimental measurement data. For example, by measuring the concentration change of precious metal ions in the solution before and after extraction, the distribution coefficient of the extractant is calculated using a formula; by observing the performance change of the extractant under different conditions for a long time, its chemical stability index is evaluated, etc.

[0070] As an embodiment of the present invention, calculating the separation efficiency index of the extraction solution by combining the performance characterization parameters and the residual concentration data includes:

[0071] Calculating the parameter weight corresponding to each parameter in the performance characterization parameters, and extracting the residual concentration value from the residual concentration data;

[0072] Performing standardization processing on the residual concentration value to obtain a standard concentration value;

[0073] Combining the parameter weight, the standard concentration value, and the performance characterization parameters, the separation efficiency index of the extraction solution can be calculated through the following formula:

[0074]

[0075] A represents the separation efficiency index of the extraction solution, β i represents the parameter weight corresponding to the i-th characterization parameter in the performance characterization parameters, Di represents the parameter value corresponding to the i-th characterization parameter among the performance characterization parameters, k represents the concentration adjustment coefficient, B represents the standard concentration value, i represents the serial number of the performance characterization parameter, and n represents the number of parameters of the performance characterization parameter.

[0076] Among them, the parameter weight is the importance degree corresponding to each parameter in the performance characterization parameters, the residual concentration value is the expressed value in the residual concentration data, the standard concentration value is the concentration value obtained after eliminating the difference between the residual concentration value and the performance characterization parameters, and the concentration adjustment coefficient is an adjustment coefficient related to the influence degree of the residual concentration on the separation efficiency, which can be obtained through the fitting analysis of a large amount of experimental data.

[0077] Furthermore, the calculation of the parameter weight corresponding to each parameter in the performance characterization parameters can be realized by the analytic hierarchy process; the extraction of the residual concentration value in the residual concentration data can be realized by an extraction function, and the extraction function is compiled by a scripting language, such as the JS scripting language; the standardization processing of the residual concentration value can be realized by the Z-score standardization method.

[0078] S3. After the initial extraction treatment, collect the flow characteristic data and solution color data corresponding to the extraction solution in the extraction tank. Based on the flow characteristic data and the solution color data, calculate the stirring uniformity corresponding to the extraction solution in the extraction tank. Based on the stirring uniformity and the separation efficiency index, evaluate the solution extraction performance of the extraction solution. Based on the solution extraction performance, formulate an extraction optimization strategy for the solution to be treated. According to the extraction optimization strategy, perform the extraction treatment of precious metal ions to obtain an extraction result.

[0079] The present invention calculates the stirring uniformity by collecting the flow characteristic data and solution color data of the extraction solution, and can comprehensively evaluate the mixing effect in the extraction process from different angles, providing an important basis for subsequent evaluation of the extraction performance. Among them, the flow characteristic data refers to the relevant physical quantity information when the extraction solution flows in the extraction tank, such as flow rate, flow field distribution, turbulence intensity, etc., and the solution color data refers to the color information presented by the extraction solution and its uniformity. Furthermore, the collection of the flow characteristic data and solution color data corresponding to the extraction solution in the extraction tank can be realized by a flow rate sensor and a high-precision color sensor.

[0080] As an embodiment of the present invention, the calculating the stirring uniformity corresponding to the extraction solution in the extraction tank based on the flow characteristic data and the solution color data includes:

[0081] Based on the flow characteristic data, determine the solution extraction flow rate in the extraction tank;

[0082] Calculate the flow rate uniformity of the extraction tank during the extraction process according to the extraction flow rate;

[0083] Based on the solution color data, determine the solution color value in the extraction tank, and based on the solution color value, calculate the color uniformity of the extraction tank during the extraction process;

[0084] Combine the flow rate uniformity and the color uniformity to calculate the stirring uniformity corresponding to the extraction solution in the extraction tank.

[0085] Wherein, the solution extraction flow rate is the speed of the solution flowing in the extraction tank, the flow rate uniformity is the uniform situation of the solution flow rate distribution at various places in the extraction tank during the extraction process, the solution color value is the color-related quantitative data presented by the solution in the extraction tank, and the color uniformity is the uniform situation of the solution color distribution in the overall space in the extraction tank during the extraction process.

[0086] Further, determine the solution extraction flow rate in the extraction tank according to the flow rate data in the flow characteristic data; according to the extraction flow rate, calculate the flow rate uniformity of the extraction tank during the extraction process by using the statistical dispersion calculation method; based on the solution color data, determine the solution color value in the extraction tank by means of color detection and quantification technology, and based on the solution color value, calculate the color uniformity of the extraction tank during the extraction process by using the color difference measurement algorithm; calculate the average value of the flow rate uniformity and the color uniformity to obtain the stirring uniformity corresponding to the extraction solution in the extraction tank.

[0087] The present invention evaluates the solution extraction efficiency of the extraction solution based on the stirring uniformity and the separation efficiency index, can comprehensively consider the mixing effect and the separation effect of the extraction process, and more comprehensively evaluate the extraction quality. Wherein, the solution extraction efficiency is a description comprehensively reflecting the extraction ability and effect of the extraction solution on precious metal ions during the extraction process. Further, based on the stirring uniformity and the separation efficiency index, evaluate the solution extraction efficiency of the extraction solution. When the stirring uniformity is high and the separation efficiency index is good, it means that the distribution effect of the solute in the extractant is good, and the extraction process can efficiently and thoroughly achieve the separation of substances, so that the solution extraction efficiency reaches a high level; on the contrary, if both are low values, the solution extraction efficiency will be correspondingly reduced, indicating that there is room for optimization in the extraction process, such as improving the stirring conditions or adjusting the extractant formula to improve the overall efficiency.

[0088] The present invention formulates an extraction optimization strategy corresponding to the solution to be treated based on the extraction efficiency of the solution, and performs the extraction treatment of precious metal ions according to the extraction optimization strategy, thereby achieving the effect of improving the extraction rate and purity of precious metal ions. Among them, the extraction optimization strategy is an extraction optimization method corresponding to the solution to be treated. Further, by accurately analyzing the extraction efficiency of the solution, the extraction conditions are optimized pertinently, such as adjusting the dosage of the extractant, optimizing the stirring speed and time, etc., to make the extraction process more efficient, reduce the residue of precious metal ions in the raffinate, improve the economic benefits and resource utilization rate of the entire extraction process, while reducing the production cost and environmental burden, and ensuring the sustainable development of the production process.

[0089] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precious metal ion extraction device, comprising a device support plate (1), characterized in that: The device support plate (1), a plurality of support rods (11) are fixedly mounted on the device support plate (1), an extraction support frame (12) is fixedly mounted on the support rods (11), and an extraction mechanism (2) is provided on the extraction support frame (12); The extraction mechanism (2) comprises an extraction box (21), the extraction box (21) is fixedly mounted on an extraction support frame (12), an extraction transmission shaft (22) is rotatably inserted inside the extraction box (21), a plurality of extraction stirring shafts (23) are arranged on the extraction transmission shaft (22), a side wall cleaning plate (24) is fixedly mounted on one end of the extraction stirring shaft (23) away from the extraction transmission shaft (22), the side wall cleaning plate (24) is tightly fitted with the inner wall of the extraction box (21), a servo motor (25) is fixedly mounted on the device support plate (1), the output end of the servo motor (25) rotatably penetrates the device support plate (1) and is fixedly connected to the extraction transmission shaft (22), and a collection tank (28) is arranged on one end of the extraction box (21) away from the device support plate (1).

2. A precious metal ion extraction device as claimed in claim 1, characterized in that: A supporting foot (13) is provided at one end of the supporting rod (11) away from the device supporting plate (1).

3. A precious metal ion extraction device as claimed in claim 1, characterized in that: A feed pipe (26) is provided on the device support plate (1), the feed pipe (26) passes through the extraction box (21), and a sealing cover (27) is provided on the feed pipe (26).

4. A precious metal ion extraction device as claimed in claim 1, characterized in that: A discharge pipe (29) is provided on a side of the extraction box (21) away from the servo motor (25), and the discharge pipe (29) is threadedly engaged with the collection tank (28).

5. A precious metal ion extraction device as claimed in claim 4, characterized in that: A separation mesh plate (211) is provided inside the collection tank (28), and filtering mesh holes are provided on the separation mesh plate (211), and the separation mesh plate (211) is tightly fitted to the inner wall of the discharge pipe (29).

6. A precious metal ion extraction device as claimed in claim 1, characterized in that: The collecting tank (28) is provided with a drain pipe (212), and the drain pipe (212) is provided with a control valve (213).

7. An extraction method of a precious metal ion extraction device, wherein the extraction method is performed by the precious metal ion extraction device according to any one of claims 1 to 6, characterized in that: The method comprises: Collecting concentration data of noble metal ions in a solution to be treated and physicochemical parameters of the solution, setting extraction process control parameters corresponding to the solution to be treated based on the concentration data and the physicochemical parameters of the solution, and performing initial extraction treatment on the solution to be treated in an extraction box based on the extraction process control parameters and a servo motor to obtain an extraction solution; Performing a residual amount detection of noble metal ions on the extraction solution to obtain ion residual concentration data of the noble metal ions, analyzing the performance characterization parameters corresponding to the extractant in the extraction solution, and calculating the separation efficiency index of the extraction solution by combining the performance characterization parameters and the residual concentration data; After the initial extraction treatment, the flow characteristic data and solution color data corresponding to the extraction solution in the extraction box are collected, and based on the flow characteristic data and the solution color data, the stirring uniformity corresponding to the extraction solution in the extraction box is calculated, and based on the stirring uniformity and the separation efficiency index, the solution extraction efficiency of the extraction solution is evaluated, and based on the solution extraction efficiency, an extraction optimization strategy corresponding to the solution to be treated is formulated, and according to the extraction optimization strategy, the extraction treatment of the precious metal ions is performed to obtain the extraction result.

8. The method according to claim 7, characterized in that The step of setting the extraction process control parameters corresponding to the solution to be treated based on the concentration data and the solution physicochemical parameters includes: Constructing a parameter matrix of the concentration data and the physicochemical parameters of the solution, and analyzing key parameter combinations in the parameter matrix; Analyzing the ionic chemical properties of the noble metal ions, and determining the type of extractant for the solution to be treated based on the ionic chemical properties; Query the extraction operation specification corresponding to the extraction agent type; Constructing a parameter-specification association model of the key parameter combination and the extraction operation specification; Optimizing the parameter-specification association model to obtain a parameter decision model; The concentration data and the physicochemical parameters of the solution are input into the parameter decision model, and the extraction process control parameters corresponding to the solution to be treated are output through the parameter decision model.

9. The method according to claim 7, characterized in that: The step of calculating the separation efficiency index of the extraction solution by combining the performance characterization parameter and the residual concentration data comprises: Calculating the parameter weight corresponding to each parameter in the efficacy characterization parameter, and extracting the residual concentration value in the residual concentration data; Standardizing the residual concentration value to obtain a standard concentration value; Combining the parameter weights, the standard concentration values ​​and the performance characterization parameters, the separation efficiency index of the extraction solution can be calculated by the following formula: A represents the separation efficiency index of the extraction solution, β i represents the parameter weight corresponding to the i-th characterization parameter in the performance characterization parameter, D i represents the parameter value corresponding to the i-th characterization parameter in the efficacy characterization parameter, k represents the concentration adjustment coefficient, B represents the standard concentration value, i represents the serial number of the efficacy characterization parameter, and n represents the number of parameters of the efficacy characterization parameter.

10. The method according to claim 7, characterized in that The calculating the stirring uniformity corresponding to the extraction solution in the extraction box based on the flow characteristic data and the solution color data includes: determining an extraction flow rate of the solution in the extraction box based on the flow characteristic data; Calculating the uniformity of the flow rate of the extraction box during the extraction process according to the extraction flow rate; determining a solution color value in the extraction box based on the solution color data; Calculating the color uniformity of the extraction box during the extraction process based on the solution color value; The stirring uniformity corresponding to the extraction solution in the extraction box is calculated in combination with the flow rate uniformity and the color uniformity.

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