Valuable metal gradient separation method and system for waste tungsten slag leachate

Abstract

The invention relates to the technical field of chemical metallurgy, in particular to a valuable metal gradient separation method and system for waste tungsten slag lixivium, and the method comprises the steps that waste tungsten slag is obtained, the waste tungsten slag is pretreated, treated waste tungsten slag is obtained, the treated waste tungsten slag is sampled, a treated sample is obtained, and the qualified rate of the sample is determined based on the treated sample; the method comprises the following steps: determining an optimal acid leaching temperature based on waste tungsten slag to be subjected to acid leaching, carrying out acid leaching treatment on the waste tungsten slag to be subjected to acid leaching by utilizing the optimal acid leaching temperature to obtain a waste tungsten slag leachate, determining a pH gradient sequence based on a solution sample, determining a plurality of valuable metal sets based on the pH gradient sequence and a tungsten-containing solution, and completing valuable metal gradient separation. According to the method, valuable metals in the waste tungsten slag leaching solution can be efficiently recycled.

Description

Technical Field

[0001] This invention relates to the field of chemical metallurgy, and in particular to a method and system for gradient separation of valuable metals in waste tungsten slag leachate. Background Technology

[0002] With the long-term mining and utilization of tungsten resources, the amount of waste tungsten slag generated has been increasing year by year. In addition to containing a large amount of tungsten, waste tungsten slag also contains a variety of valuable metal ions. If it is directly discarded or simply piled up, it will not only waste resources, but also lead to the leakage of heavy metal ions and cause environmental pollution problems.

[0003] Existing metal recovery methods mainly include solvent extraction, ion exchange, chemical precipitation, and membrane separation. Among them, chemical precipitation is widely used for the preliminary metal separation of waste tungsten slag leachate due to its simple process, low cost, and strong adaptability.

[0004] While the methods described above can achieve the separation of valuable metals, traditional pH adjustments rely heavily on empirical settings and fail to adequately consider the co-precipitation behavior of different metal ions in complex systems, resulting in low precipitation rates and poor purity of the target metal. The lack of systematic optimization in parameter control during the precipitation process easily leads to metal ion migration and mixed deposition. Furthermore, the absence of quantitative gradient constraints and separation evaluation mechanisms between multi-stage precipitation and filtration stages makes it difficult to achieve precise gradient separation and highly selective enrichment. Therefore, how to achieve efficient recovery of valuable metals from waste tungsten slag leachate has become an urgent problem to be solved. Summary of the Invention

[0005] This invention provides a method for gradient separation of valuable metals in waste tungsten slag leachate and a computer-readable storage medium, the main purpose of which is to achieve efficient recovery of valuable metals in waste tungsten slag leachate.

[0006] To achieve the above objectives, the present invention provides a method for gradient separation of valuable metals in waste tungsten slag leachate, comprising:

[0007] Obtain waste tungsten slag, pre-treat the waste tungsten slag to obtain treated waste tungsten slag;

[0008] Samples were taken from the treated waste tungsten slag to obtain the treated samples;

[0009] The sample pass rate was determined based on the processed samples;

[0010] Compare the sample pass rate with the preset pass threshold. If the sample pass rate is less than the pass threshold, treat the waste tungsten slag as waste tungsten slag and return to the pretreatment step of the waste tungsten slag until the sample pass rate is greater than or equal to the pass threshold. Then treat the waste tungsten slag as waste tungsten slag to be acid leached.

[0011] Based on the determination of the optimal acid leaching temperature of the waste tungsten slag to be acid leached, the waste tungsten slag to be acid leached is acid leached at the optimal acid leaching temperature to obtain waste tungsten slag leachate.

[0012] A tungsten-containing solution was identified based on the leachate from waste tungsten slag.

[0013] A sample of the tungsten-containing solution was taken to obtain a solution sample;

[0014] pH gradient sequence was identified based on solution samples;

[0015] Multiple sets of valuable metals were identified based on pH gradient sequences and tungsten-containing solutions, thus completing the gradient separation of valuable metals.

[0016] Optionally, the pretreatment of the waste tungsten slag to obtain treated waste tungsten slag includes:

[0017] The waste tungsten slag is crushed to obtain crushed waste tungsten slag;

[0018] Magnetic separation is performed on crushed waste tungsten slag to obtain iron-removed waste tungsten slag;

[0019] The waste tungsten slag from iron removal is ground to obtain polished waste tungsten slag;

[0020] The waste tungsten slag from grinding is cleaned to obtain treated waste tungsten slag.

[0021] Optionally, the step of determining the sample pass rate based on the processed samples includes:

[0022] Acquire spectrometer, particle size analyzer, deionized water and conductivity meter;

[0023] The tungsten content of the processed sample was determined using a spectrometer.

[0024] The particle size of the processed sample was determined using a particle size analyzer to obtain the sample particle size value;

[0025] The sample quality was confirmed, and the target deionized water was identified based on the sample quality and the deionized water.

[0026] The treated sample was mixed with the target deionized water and stirred to obtain a mixed solution;

[0027] The mixed solution is filtered to obtain the filtered solution;

[0028] The conductivity of the filtered solution was tested using a conductivity meter to obtain the sample conductivity.

[0029] The standardized tungsten content is calculated based on the tungsten content of the sample and the preset limit tungsten content.

[0030] Calculate the standardized granularity value based on the sample granularity value and the preset limit granularity value;

[0031] Standardized conductivity was determined based on sample conductivity and preset limiting conductivity.

[0032] The sample pass rate is calculated based on standardized tungsten content, standardized particle size, and standardized conductivity.

[0033] Optionally, determining the optimal acid leaching temperature based on the tungsten slag to be acid-leached includes:

[0034] Samples were taken from the tungsten slag to be leached to obtain test samples;

[0035] Obtain the reaction tank and confirm its temperature control range;

[0036] The temperature control range is uniformly sampled based on a preset temperature sampling interval to obtain multiple temperature test values.

[0037] For each of the multiple temperature test values, perform the following operation:

[0038] The target reaction tank was identified based on the reaction tank and temperature test values.

[0039] Multiple reaction time points were identified based on preset time sampling intervals and preset reaction times.

[0040] Start the target reaction tank, use the target reaction tank after startup to perform acid leaching treatment on the test sample, and record the time in real time from the start time of the target reaction tank to obtain the processing time;

[0041] Extracting the first from multiple reaction time points The reaction time point and the There are several reaction time points, among which... The initial value is 2;

[0042] When the time is equal to the first At the first reaction time point, the target reactor was identified based on the start-up time. A response effect index;

[0043] When the time is equal to the first At the first reaction time point, the target reactor was identified based on the start-up time. A response effect index;

[0044] Compare the first The first reaction effect index and the second The reaction effect index, if the first... The reaction effect index is greater than that of the first. Each response effect index, then let ,Will As Returning to the extraction of the first from multiple reaction time points The reaction time point and the The steps at each reaction time point;

[0045] If the first The reaction effect index is less than or equal to the first. The first response effect index will then be the first... The reaction time point corresponding to each reaction effect index is taken as the optimal reaction time;

[0046] Based on temperature test values, optimal reaction time, and the first The acid leaching score is calculated using the reaction effect index, and the calculation formula is shown below:

[0047] ;

[0048] in, Indicates the acid leaching score. This indicates the temperature test value. Indicates the optimal reaction time. Indicates the first A response effect index Represents the natural logarithm. For the preset temperature weight, Preset reaction effect weights;

[0049] Summarize the acid leaching scores to obtain multiple acid leaching scores;

[0050] The optimal score was determined based on multiple acid leaching scores, where the optimal score was the highest acid leaching score among the multiple acid leaching scores;

[0051] The temperature value corresponding to the best score is taken as the optimal acid leaching temperature.

[0052] Optionally, the determination of the first target reaction vessel based on the start-up target reaction vessel The response effect index includes:

[0053] Acquire pH meter and plasma spectrometer;

[0054] The reaction sample was identified based on the target reaction tank after startup;

[0055] The reaction sample was filtered to obtain the filtrate;

[0056] The pH of the filtrate was measured using a pH meter to obtain the pH of the filtrate.

[0057] The concentration of tungsten ions in the filtrate was measured using an inductively coupled plasma spectrometer.

[0058] Calculate the first based on the pH of the filtrate and the concentration of tungsten ions. A response effect index.

[0059] Optionally, the step of identifying a tungsten-containing solution based on the leaching solution of waste tungsten slag includes:

[0060] The physical property parameters of the leachate from the waste tungsten slag and the centrifuge were obtained. The physical property parameters included: solid density, average particle size, leachate viscosity and liquid density.

[0061] The separation factor is calculated based on the solid density, liquid density, leachate viscosity, and average particle size.

[0062] Calculate the separation rotation speed based on the separation factor and the preset target solid concentration;

[0063] Calculate the centrifugation time based on the viscosity, density, and solid density of the leachate.

[0064] The tungsten-containing solution was identified based on the leachate from the waste tungsten slag, the separation speed, the centrifugation time, and the centrifuge.

[0065] Optionally, the step of identifying the pH gradient sequence based on the solution sample includes:

[0066] Valuable metal analysis was performed on the solution sample to identify the types of valuable metals, which included multiple valuable metals.

[0067] Perform the following operation on each of the multiple valuable metals:

[0068] The pH range for precipitation was determined based on the valuable metals.

[0069] The optimal precipitation pH value was determined based on the precipitation pH range.

[0070] By summarizing the optimal precipitation pH values, multiple optimal precipitation pH values ​​were obtained;

[0071] Multiple optimal precipitation pH values ​​were sorted to obtain a pH gradient sequence.

[0072] Optionally, determining the optimal precipitation pH based on the precipitation pH range includes:

[0073] Obtain the solubility product constant and ion valence state;

[0074] The equilibrium pH value is calculated based on the solubility product constant, ion valence state, and preset target concentration, using the following formula:

[0075] ;

[0076] in, Indicates the equilibrium pH value. Represents the solubility product constant. The preset chemical coefficients, Indicates the valence state of the ion. Indicates the target concentration. Represents a logarithm to the base 10;

[0077] A precipitation pH value sequence was identified based on the precipitation pH range, which includes multiple precipitation pH values.

[0078] For each precipitation pH value in the precipitation pH value sequence, perform the following operation:

[0079] Calculate the precipitation rate based on the equilibrium pH and the precipitation pH.

[0080] Calculate precipitation efficiency based on precipitation formation rate;

[0081] By summing the precipitation efficiencies, multiple precipitation efficiencies are obtained;

[0082] The maximum precipitation efficiency was determined based on multiple precipitation efficiencies, where the maximum precipitation efficiency is the largest among the multiple precipitation efficiencies.

[0083] The precipitation pH value corresponding to the maximum precipitation efficiency is taken as the optimal precipitation pH value.

[0084] Optionally, the identification of multiple sets of valuable metals based on pH gradient sequences and tungsten-containing solutions includes:

[0085] Extracting the first from the pH gradient sequence The optimal pH value for precipitation, among which... The initial value is 1;

[0086] The target solution was identified based on the tungsten-containing solution and the optimal precipitation pH.

[0087] The target solution was filtered to obtain a collection of valuable metals and a supernatant.

[0088] make ,Will As The supernatant was then used as a tungsten-containing solution and returned to the step of extracting the first tungsten from the pH gradient sequence. The optimal pH value for precipitation was determined by the following steps until... By summing the sets of valuable metals, we obtain multiple sets of valuable metals, among which... This represents the number of optimal precipitation pH values ​​in the pH gradient sequence.

[0089] To achieve the above objectives, the present invention also provides a valuable metal gradient separation system for leaching waste tungsten slag, comprising:

[0090] The basic raw material acquisition module is used to acquire waste tungsten slag, pre-treat the waste tungsten slag to obtain treated waste tungsten slag, sample the treated waste tungsten slag to obtain treated samples, and confirm the sample qualification rate based on the treated samples.

[0091] The basic raw material screening module is used to compare the sample pass rate with the preset pass threshold. If the sample pass rate is less than the pass threshold, the waste tungsten slag to be processed is treated as waste tungsten slag, and the process returns to the step of pre-treating the waste tungsten slag until the sample pass rate is greater than or equal to the pass threshold, and the waste tungsten slag to be processed is treated as waste tungsten slag to be acid leached.

[0092] The tungsten-containing solution acquisition module is used to determine the optimal acid leaching temperature based on the waste tungsten slag to be acid leached, to perform acid leaching treatment on the waste tungsten slag to be acid leached at the optimal acid leaching temperature, to obtain waste tungsten slag leachate, to determine the tungsten-containing solution based on the waste tungsten slag leachate, and to sample the tungsten-containing solution to obtain a solution sample.

[0093] The valuable metal separation module is used to identify the pH gradient sequence based on the solution sample, and to identify multiple sets of valuable metals based on the pH gradient sequence and the tungsten-containing solution, thus completing the valuable metal gradient separation.

[0094] To address the above problems, the present invention also provides an electronic device, the electronic device comprising:

[0095] Memory, storing at least one instruction; and

[0096] The processor executes the instructions stored in the memory to implement the above-described method for gradient separation of valuable metals in waste tungsten slag leachate.

[0097] To address the aforementioned problems, the present invention also provides a computer-readable storage medium storing at least one instruction, which is executed by a processor in an electronic device to implement the above-described method for gradient separation of valuable metals in waste tungsten slag leachate.

[0098] To address the problems described in the background section, this invention obtains waste tungsten slag, pre-treats it to obtain treated waste tungsten slag. This invention effectively removes impurities and activates the material through pre-treatment, creating favorable conditions for subsequent efficient leaching. Furthermore, samples are taken from the treated waste tungsten slag to obtain treated samples. This invention ensures that the obtained samples are representative and accurately reflect the properties of the entire batch of material by standardizing the sampling process. Based on the treated samples, the sample pass rate is confirmed. This invention quantitatively evaluates the quality of the pre-treated material, facilitating process flow. This provides key decision-making basis by comparing the sample pass rate with a preset pass threshold. If the sample pass rate is less than the pass threshold, the treated waste tungsten slag is treated as waste tungsten slag, and the process returns to the pretreatment step until the sample pass rate is greater than or equal to the pass threshold. Then, the treated waste tungsten slag is treated as waste tungsten slag to be acid-leached. It is evident that this embodiment of the invention establishes a closed-loop feedback and cyclical processing mechanism to forcibly ensure the quality of raw materials entering the core leaching process, stabilizing the process from the source and achieving efficient recovery of valuable metals from the waste tungsten slag leachate. Based on the waste tungsten slag to be acid-leached, the optimal acid leaching temperature is determined, and the optimal acid leaching temperature is used to treat the waste tungsten slag. Acid leaching of waste tungsten slag yields a tungsten slag leachate. This embodiment of the invention determines the optimal reaction temperature based on specific material characteristics, maximizing the leaching efficiency of the target metal and suppressing impurity dissolution. Based on the waste tungsten slag leachate, a tungsten-containing solution is identified. This embodiment of the invention effectively separates and enriches tungsten-containing components from a complex leaching system, laying the foundation for subsequent precise separation and purification, and achieving efficient recovery of valuable metals from the waste tungsten slag leachate. Sampling of the tungsten-containing solution yields a solution sample. This embodiment of the invention monitors the quality of key intermediate products and tracks the solution chemistry in real time. The properties ensure stable and reliable input conditions for the separation process. Based on solution samples, a pH gradient sequence was identified. This invention provides core operating parameters for the selective separation of multiple valuable metals by accurately measuring and constructing a stepwise precipitation pH control sequence. Based on the pH gradient sequence and the tungsten-containing solution, multiple sets of valuable metals were identified, completing the gradient separation of valuable metals. This invention utilizes the pH differences in precipitation from different metal hydroxides to achieve sequential, efficient, and clean separation and recovery of valuable metals such as tungsten, cobalt, and nickel, realizing the efficient recovery of valuable metals from waste tungsten slag leachate. Therefore, this invention can achieve the efficient recovery of valuable metals from waste tungsten slag leachate. Attached Figure Description

[0099] Figure 1 This is a schematic flowchart of a method for gradient separation of valuable metals in waste tungsten slag leachate provided in an embodiment of the present invention.

[0100] Figure 2 This is a functional block diagram of a valuable metal gradient separation system for leaching waste tungsten slag provided in an embodiment of the present invention;

[0101] Figure 3 This is a schematic diagram of the structure of an electronic device for implementing the method for gradient separation of valuable metals in waste tungsten slag leachate, according to an embodiment of the present invention.

[0102] Explanation of reference numerals in the attached figures:

[0103] 10. Electronic device; 11. Processor; 12. Memory; 13. Bus.

[0104] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0105] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0106] This application provides a method for gradient separation of valuable metals in leaching solutions of waste tungsten slag. The executing entity of this method includes, but is not limited to, at least one electronic device configured to execute the method provided in this application, such as a server or a terminal. In other words, the method for gradient separation of valuable metals in leaching solutions of waste tungsten slag can be executed by software or hardware installed on a terminal device or a server device, and the software may be a blockchain platform. The server includes, but is not limited to, a single server, a server cluster, a cloud server, or a cloud server cluster.

[0107] Reference Figure 1 The diagram shown is a schematic flow chart of a method for gradient separation of valuable metals in waste tungsten slag leaching solution according to an embodiment of the present invention. In this embodiment, the method for gradient separation of valuable metals in waste tungsten slag leaching solution includes:

[0108] S1. Obtain waste tungsten slag, pre-treat the waste tungsten slag to obtain treated waste tungsten slag.

[0109] For example, Xiao Zhang is an employee of a waste tungsten slag processing plant. He needs to perform a gradient separation of valuable metals in the leachate of the waste tungsten slag in order to recover the valuable metals in the leachate. So Xiao Zhang obtains waste tungsten slag for subsequent processing and separation.

[0110] It should be explained that waste tungsten slag refers to the residue generated during tungsten smelting, processing or related production processes.

[0111] Specifically, the pretreatment of waste tungsten slag to obtain treated waste tungsten slag includes:

[0112] The waste tungsten slag is crushed to obtain crushed waste tungsten slag;

[0113] Magnetic separation is performed on crushed waste tungsten slag to obtain iron-removed waste tungsten slag;

[0114] The waste tungsten slag from iron removal is ground to obtain polished waste tungsten slag;

[0115] The waste tungsten slag from grinding is cleaned to obtain treated waste tungsten slag.

[0116] It should be explained that: Crushing the waste tungsten slag refers to using a crusher to crush the waste tungsten slag; optionally, a jaw crusher is used. Crushed waste tungsten slag refers to the waste tungsten slag after crushing. Magnetic separation of the crushed waste tungsten slag refers to using a magnetic separator to remove magnetic iron, steel filings, and other metallic impurities from the crushed waste tungsten slag; optionally, a permanent magnet drum magnetic separator is used. Iron-removed waste tungsten slag refers to the crushed waste tungsten slag after magnetic separation. Grinding the iron-removed waste tungsten slag refers to using a grinding machine to grind the surface of the iron-removed waste tungsten slag; optionally, a ball mill is used. Grinded waste tungsten slag refers to the iron-removed waste tungsten slag after grinding. Cleaning the ground waste tungsten slag refers to using clean water to clean the surface of the ground waste tungsten slag to remove soluble salts, alkalis, and floating impurities; treated waste tungsten slag refers to the ground waste tungsten slag after cleaning.

[0117] S2. Samples are taken from the waste tungsten slag to obtain the processed samples, and the sample pass rate is determined based on the processed samples.

[0118] It should be explained that the sampling of the treated waste tungsten slag refers to: extracting a certain mass (e.g., 1 kg) of the treated waste tungsten slag from the treated waste tungsten slag, and the certain mass of the treated waste tungsten slag is the treated sample.

[0119] Specifically, the process of determining the sample pass rate based on processed samples includes:

[0120] Acquire spectrometer, particle size analyzer, deionized water and conductivity meter;

[0121] The tungsten content of the processed sample was determined using a spectrometer.

[0122] The particle size of the processed sample was determined using a particle size analyzer to obtain the sample particle size value;

[0123] The sample quality was confirmed, and the target deionized water was identified based on the sample quality and the deionized water.

[0124] The treated sample was mixed with the target deionized water and stirred to obtain a mixed solution;

[0125] The mixed solution is filtered to obtain the filtered solution;

[0126] The conductivity of the filtered solution was tested using a conductivity meter to obtain the sample conductivity.

[0127] The standardized tungsten content is calculated based on the tungsten content of the sample and the preset limit tungsten content, using the following formula:

[0128] ;

[0129] in, Indicates standardized tungsten content, Indicates the tungsten content of the sample. This indicates a restriction on tungsten content. This indicates taking the minimum value;

[0130] The standardized granularity value is calculated based on the sample granularity value and the preset limit granularity value, using the following formula:

[0131] ;

[0132] in, Indicates the standardized granularity value. Indicates the tungsten content of the sample. Indicates the granularity limit value;

[0133] Standardized conductivity was determined based on sample conductivity and preset limiting conductivity.

[0134] The sample pass rate is calculated based on standardized tungsten content, standardized particle size, and standardized conductivity, using the following formula:

[0135] ;

[0136] in, Indicates the sample pass rate. This represents the standardized conductivity.

[0137] It should be explained that the spectrometer is an X-ray fluorescence spectrometer, and optionally, a Bruker energy-dispersive X-ray fluorescence spectrometer (EDXRF) is used. The particle size analyzer is a laser particle size analyzer, and optionally, a Zhenli Optics LT3600Plus laser particle size analyzer is used. Deionized water refers to pure water after removing impurities in ionic form. The conductivity meter is a conductivity tester, and optionally, a Shanghai Leici DDSJ-308F conductivity meter is used.

[0138] It is understood that the determination of tungsten content in the treated sample using a spectrometer refers to: using a spectrometer to determine the tungsten content in the treated sample, where the tungsten content is the tungsten content of the sample. The method for determining the tungsten content in the treated sample using a spectrometer is existing technology and will not be elaborated here. The determination of particle size in the treated sample using a particle size analyzer refers to: using a particle size analyzer to test the particle size of the treated sample, where the particle size is the sample particle size value. The method for testing the particle size of the treated sample using a particle size analyzer is existing technology and will not be elaborated here. Sample quality refers to the quality of the treated sample. The determination of the target deionized water based on sample quality and deionized water means: first, determining the required deionized water quality according to a preset mass ratio and sample quality; then, extracting deionized water with the required deionized water quality from the deionized water. Optionally, the mass ratio is: .

[0139] It should be explained that the mixing and stirring of the treated sample with the target deionized water refers to mixing and stirring the treated sample with the target deionized water to obtain a solution after mixing the treated sample and the target deionized water. This solution is the mixed solution, and the filtered solution refers to the mixed solution after filtration. The conductivity test of the filtered solution using a conductivity meter refers to testing the conductivity of the filtered solution using a conductivity meter. The conductivity of the filtered solution is the sample conductivity. The method for testing the conductivity of the filtered solution using a conductivity meter is existing technology and will not be elaborated here. Standardized tungsten content refers to a dimensionless index obtained by normalizing the tungsten content values ​​measured in different samples according to a preset limit tungsten content ratio. It is used to reflect the relative enrichment degree of tungsten in the sample. Through standardization, the measured tungsten content can be converted into a standardized value in the range of 0 to 1. When the tungsten content in the sample reaches or exceeds a preset limit, the standardized tungsten content is set to 1, indicating that the indicator has reached the optimal level. When the actual tungsten content is lower than the limit, the standardized tungsten content is reduced proportionally. This is used to quantitatively evaluate the pretreatment effect and the tungsten enrichment efficiency. Standardized particle size refers to the value of the sample particle size characteristic parameter (e.g., d). 90The dimensionless index, obtained by proportionally normalizing the particle size according to a preset particle size limit, is used to reflect the degree of particle refinement and dispersion performance in the sample. Through standardization, the actually measured particle size can be converted into a standardized value in the range of 0 to 1. When the sample particle size is less than or equal to the preset limit, the standardized particle size value is 1, indicating good particle refinement. When the actual particle size exceeds the limit, the standardized particle size value is reduced proportionally. This is used to quantitatively evaluate the solid dispersion and pulverization effect during pretreatment. The standardized conductivity value refers to the dimensionless index obtained by proportionally normalizing the sample conductivity parameter according to a preset conductivity limit. It is used to reflect the ion concentration or impurity residue level in the leachate. Through standardization, the actually measured conductivity can be converted into a standardized value in the range of 0 to 1. When the conductivity is less than or equal to the limit, the standardized conductivity value is 1, indicating high solution purity and low impurity ion concentration. When the conductivity is higher than the limit, the standardized conductivity value is reduced proportionally. This is used to quantitatively evaluate the degree of liquid-phase purification and impurity removal effect after pretreatment.

[0140] Understandably, the tungsten content limit is a value arbitrarily set by the staff of the waste tungsten slag treatment plant based on the average tungsten content of historically processed qualified waste tungsten slag; the particle size limit is a value arbitrarily set by the staff of the waste tungsten slag treatment plant based on the average particle size of historically processed qualified waste tungsten slag; and the electrical conductivity limit is a value arbitrarily set by the staff of the waste tungsten slag treatment plant based on the average electrical conductivity of historically processed qualified waste tungsten slag. For example, if the average tungsten content of historically processed qualified waste tungsten slag is... Historically, the average particle size of properly treated waste tungsten slag was [value missing]. Historically, the average conductivity of properly treated waste tungsten slag is [value missing]. The limits are set for tungsten content, particle size, and conductivity. , and The sample pass rate reflects the degree of compliance of the processed samples; the higher the sample pass rate, the higher the degree of compliance of the processed samples.

[0141] It should be understood that the method for determining the standardized conductivity based on the sample conductivity and the preset limiting conductivity is the same as the method for calculating the standardized granularity value based on the sample granularity value and the preset limiting granularity value, and will not be described again here.

[0142] S3. Compare the sample pass rate with the preset pass threshold. If the sample pass rate is less than the pass threshold, treat the waste tungsten slag as waste tungsten slag and return to the step of pre-treating the waste tungsten slag until the sample pass rate is greater than or equal to the pass threshold, and treat the waste tungsten slag as waste tungsten slag to be acid leached.

[0143] It should be explained that the pass threshold is a value set manually by the staff of the waste tungsten slag treatment plant; optionally, the pass threshold is 0.85. Waste tungsten slag awaiting acid leaching refers to waste tungsten slag with a sample pass rate greater than or equal to the pass threshold.

[0144] S4. Based on the determination of the optimal acid leaching temperature of the waste tungsten slag to be acid leached, the waste tungsten slag to be acid leached is acid leached using the optimal acid leaching temperature to obtain waste tungsten slag leachate.

[0145] It should be explained that the acid leaching treatment of the waste tungsten slag to be acid leached using the optimal acid leaching temperature means: setting the temperature of the reaction tank to the optimal acid leaching temperature, then adding the waste tungsten slag to be acid leached into the reaction tank, and using the reaction tank to acid leach the waste tungsten slag to be acid leached. The waste tungsten slag leachate refers to the solution obtained after acid leaching the waste tungsten slag to be acid leached.

[0146] Specifically, determining the optimal acid leaching temperature based on the tungsten slag to be acid-leached includes:

[0147] Samples were taken from the tungsten slag to be leached to obtain test samples;

[0148] Obtain the reaction tank and confirm its temperature control range;

[0149] The temperature control range is uniformly sampled based on a preset temperature sampling interval to obtain multiple temperature test values.

[0150] For each of the multiple temperature test values, perform the following operation:

[0151] The target reaction tank was identified based on the reaction tank and temperature test values.

[0152] Multiple reaction time points were identified based on preset time sampling intervals and preset reaction times.

[0153] Start the target reaction tank, use the target reaction tank after startup to perform acid leaching treatment on the test sample, and record the time in real time from the start time of the target reaction tank to obtain the processing time;

[0154] Extracting the first from multiple reaction time points The reaction time point and the There are several reaction time points, among which... The initial value is 2;

[0155] When the time is equal to the first At the first reaction time point, the target reactor was identified based on the start-up time. A response effect index;

[0156] When the time is equal to the first At the first reaction time point, the target reactor was identified based on the start-up time. A response effect index;

[0157] Compare the first The first reaction effect index and the second The reaction effect index, if the first... The reaction effect index is greater than that of the first. Each response effect index, then let ,Will As Returning to the extraction of the first from multiple reaction time points The reaction time point and the The steps at each reaction time point;

[0158] If the first The reaction effect index is less than or equal to the first. The first response effect index will then be the first... The reaction time point corresponding to each reaction effect index is taken as the optimal reaction time;

[0159] Based on temperature test values, optimal reaction time, and the first The acid leaching score is calculated using the reaction effect index, and the calculation formula is shown below:

[0160] ;

[0161] in, Indicates the acid leaching score. This indicates the temperature test value. Indicates the optimal reaction time. Indicates the first A response effect index Represents the natural logarithm. For the preset temperature weight, Preset reaction effect weights;

[0162] Summarize the acid leaching scores to obtain multiple acid leaching scores;

[0163] The optimal score was determined based on multiple acid leaching scores, where the optimal score was the highest acid leaching score among the multiple acid leaching scores;

[0164] The temperature value corresponding to the best score is taken as the optimal acid leaching temperature.

[0165] It should be explained that the sampling method for the tungsten slag to be acid-leached is the same as the sampling method for the treated tungsten slag, and will not be repeated here. The reaction tank is a steam reactor; optionally, a Huihe steam-heated reactor (tank) can be used. The temperature control range refers to the adjustable temperature range of the reaction tank during operation, which can be obtained from the product technical manual provided by the reaction tank manufacturer. The temperature sampling interval is a value manually set by the staff of the tungsten slag treatment plant; optionally, the temperature sampling interval is 30℃.

[0166] For example, if the temperature control range is 60-120℃ and the temperature sampling interval is 30℃, then after uniformly sampling the temperature control range based on the preset temperature sampling interval, multiple temperature test values ​​of 60℃, 90℃, and 120℃ will be obtained. If the time sampling interval is 10 minutes and the reaction time is 30 minutes, then multiple reaction time points confirmed based on the preset time sampling interval and the preset reaction time are: 10 minutes, 20 minutes, and 30 minutes.

[0167] It is understood that identifying the target reaction tank based on the reaction tank and temperature test values ​​means setting the temperature of the reaction tank to the temperature test value, and the target reaction tank refers to the reaction tank with the temperature set to the temperature test value. The time sampling interval and reaction time are values ​​manually set by the staff of the waste tungsten slag treatment plant; optionally, the time sampling interval is 10 minutes and the reaction time is 200 minutes.

[0168] For example, if the target reaction tank is started at 10:00:00, then when the time is 10:05:00, the reaction time is 5 minutes, and when the time is 10:15:00, the reaction time is 15 minutes. If there are multiple reaction time points: 10 minutes, 20 minutes, and 30 minutes, then the second reaction time point extracted from the multiple reaction time points is: 20 minutes.

[0169] It should be explained that the optimal reaction time refers to the [number]th [time]. The reaction effect index is less than or equal to the first. When the response effect index is 1, the 1st index will be 1. The reaction time point corresponding to each reaction effect index. The acid leaching score reflects the treatment effect of the acid leaching process; the higher the score, the better the treatment effect. The temperature weight and reaction effect weight are values ​​manually set by the staff of the waste tungsten slag treatment plant; optional, the temperature weight is 0.5, and the reaction effect weight is 0.5. The optimal acid leaching temperature refers to the temperature test value corresponding to the optimal score.

[0170] It should be understood that the target reaction tank identified after startup is the first The method of determining the reaction effect index and the target reaction tank after startup were used to identify the first reaction effect index. The method for calculating the reaction effect index is the same, and will not be repeated here.

[0171] In detail, the target reaction tank confirmed after startup... The response effect index includes:

[0172] Acquire pH meter and plasma spectrometer;

[0173] The reaction sample was identified based on the target reaction tank after startup;

[0174] The reaction sample was filtered to obtain the filtrate;

[0175] The pH of the filtrate was measured using a pH meter to obtain the pH of the filtrate.

[0176] The concentration of tungsten ions in the filtrate was measured using an inductively coupled plasma spectrometer.

[0177] Calculate the first based on the pH of the filtrate and the concentration of tungsten ions. The reaction effect index is calculated using the following formula:

[0178] ;

[0179] in, Indicates the first A response effect index Indicates tungsten ion concentration. Indicates the pH of the filtrate. This is the preset ideal pH value.

[0180] It should be explained that the pH meter is an acid-base meter. Optionally, a Mettler Toledo pH meter (acidity meter) can be used. pH varies at different temperatures; all pH values ​​in this embodiment refer to pH at room temperature, specifically the indoor ambient temperature. In my country's chemical industry, 25°C is commonly used as the professional standard. The plasma spectrometer is an inductively coupled plasma emission spectrometer. Optionally, a Thermo Fisher Scientific ICP-OES inductively coupled plasma emission spectrometer can be used. The confirmation of the reaction sample based on the target reaction tank after startup means: extracting a certain mass (e.g., 1 kg) of the reacted solution from the target reaction tank after startup; this certain mass of reacted solution is the reaction sample.

[0181] It should be understood that the method for filtering the reaction sample is the same as the method for filtering the mixed solution, and will not be repeated here. The filtrate refers to the reaction sample after filtration. Measuring the pH of the filtrate using a pH meter means measuring the hydrogen ion concentration index of the filtrate. The hydrogen ion concentration index of the filtrate is the pH of the filtrate. This method of measuring the hydrogen ion concentration index of the filtrate using a pH meter is existing technology and will not be repeated here. Measuring the concentration of the filtrate using an inductively coupled plasma spectrometer means measuring the tungsten ion concentration in the filtrate using an inductively coupled plasma spectrometer. The tungsten ion concentration in the filtrate is the tungsten ion concentration. This method of measuring the tungsten ion concentration in the filtrate using an inductively coupled plasma spectrometer is existing technology and will not be repeated here.

[0182] Understandably, the first The reaction efficiency index reflects the treatment efficiency of acid leaching. The higher the reaction efficiency index, the higher the treatment efficiency of acid leaching. The ideal pH value is a value set manually by the staff of the waste tungsten slag treatment plant based on the average pH value of the solution during historical acid leaching treatments. For example, if the average pH value of the solution during historical acid leaching treatments is 2.3, then the ideal pH value is 2.3.

[0183] S5. Based on the leachate from the waste tungsten slag, a tungsten-containing solution was identified.

[0184] Specifically, the identification of a tungsten-containing solution based on the leaching solution of waste tungsten slag includes:

[0185] The physical property parameters of the leachate from the waste tungsten slag and the centrifuge were obtained. The physical property parameters included: solid density, average particle size, leachate viscosity and liquid density.

[0186] The separation factor is calculated based on solid density, liquid density, leachate viscosity, and average particle size, using the following formula:

[0187] ;

[0188] in, Indicates the separating factor. Represents the density of a solid. Indicates the density of the liquid. Indicates the viscosity of the leachate. Indicates the average particle size. This is a preset separation constant;

[0189] The separation rotation speed is calculated based on the separation factor and the preset target solid concentration, using the following formula:

[0190] ;

[0191] in, Indicates the separation speed, Indicates the target solid concentration. This is the preset speed influence coefficient;

[0192] The centrifugation time is calculated based on the leachate viscosity, liquid density, and solid density, using the following formula:

[0193] ;

[0194] in, Indicates centrifugation time. The preset time influence coefficient;

[0195] The tungsten-containing solution was identified based on the leachate from the waste tungsten slag, the separation speed, the centrifugation time, and the centrifuge.

[0196] It should be explained that physical characteristic parameters refer to parameters related to the physical properties of the leaching solution of waste tungsten slag. These parameters include: solid density, average particle size, leachate viscosity, and liquid density. Solid density refers to the density of the solid particles constituting the waste tungsten slag. Optionally, a gas hydrometer is used to obtain the solid density; however, this is existing technology and will not be elaborated further. Average particle size refers to the average diameter of the suspended or dispersed solid particles in the waste tungsten slag leachate. Optionally, a laser particle size analyzer is used to obtain the average particle size; however, this is existing technology and will not be elaborated further. Leachate viscosity refers to the viscosity of the waste tungsten slag leachate. Optionally, a rotational viscometer is used to obtain the leachate viscosity; however, this is existing technology and will not be elaborated further. Liquid density refers to the density of the waste tungsten slag leachate. Optionally, a densitometer is used to obtain the liquid density; however, this is existing technology and will not be elaborated further. A centrifuge is a machine that uses centrifugal force to separate the components in a mixture of liquids and solid particles or liquids and liquids. Optionally, a ThermoScientificPlus centrifuge can be used as the centrifuge.

[0197] Understandably, the separation factor reflects the difficulty of separating solid particles from the leachate of waste tungsten slag; the larger the separation factor, the less difficult it is to separate the solid particles from the leachate. The separation constant is a value manually set by the staff of the waste tungsten slag treatment plant; optionally, the separation constant is 0.5. The separation speed refers to the rotational speed of the centrifuge during operation; the speed influence coefficient is a value manually set by the staff of the waste tungsten slag treatment plant; optionally, the speed influence coefficient is 1.1. The centrifugation time refers to the time spent in the centrifugation process. The time influence coefficient is a value manually set by the staff of the waste tungsten slag treatment plant; optionally, the time influence coefficient is 1.1.

[0198] It should be understood that the determination of tungsten-containing solution based on waste tungsten slag leachate, separation speed, centrifugation time and centrifuge means: the waste tungsten slag leachate is centrifuged on a centrifuge at a separation speed and centrifugation time to obtain the supernatant after separation, and the supernatant after separation is the tungsten-containing solution.

[0199] S6. Take samples of the tungsten-containing solution to obtain solution samples, and identify the pH gradient sequence based on the solution samples.

[0200] It should be explained that the method for sampling the tungsten-containing solution is the same as the method for sampling the treated waste tungsten slag, and will not be repeated here.

[0201] Specifically, the identification of the pH gradient sequence based on solution samples includes:

[0202] Valuable metal analysis was performed on the solution sample to identify the types of valuable metals, which included multiple valuable metals.

[0203] Perform the following operation on each of the multiple valuable metals:

[0204] The pH range for precipitation was determined based on the valuable metals.

[0205] The optimal precipitation pH value was determined based on the precipitation pH range.

[0206] By summarizing the optimal precipitation pH values, multiple optimal precipitation pH values ​​were obtained;

[0207] Multiple optimal precipitation pH values ​​were sorted to obtain a pH gradient sequence.

[0208] It should be explained that the analysis of valuable metals in the solution sample refers to the qualitative and quantitative detection of the solution sample to determine the types of valuable metals contained therein. Valuable metal types refer to the types of valuable metals contained in the solution sample; valuable metals are metallic elements in the solution sample that can be separated, extracted, or recovered. Determining the precipitation pH range based on valuable metals means that by analyzing the solubility of valuable metals under different pH conditions, the optimal pH range is determined where valuable metal ions preferentially form stable precipitates, while impurity metals remain primarily in a dissolved state. This optimal pH range is the precipitation pH range.

[0209] It should be explained that sorting the multiple optimal precipitation pH values ​​means: sorting the multiple optimal precipitation pH values ​​in order of increasing value. For example, if the multiple optimal precipitation pH values ​​are 1, 3, 5, 4, 2, then the pH gradient sequence obtained after sorting the multiple optimal precipitation pH values ​​is 1, 2, 3, 4, 5.

[0210] Specifically, determining the optimal precipitation pH value based on the precipitation pH range includes:

[0211] Obtain the solubility product constant and ion valence state;

[0212] The equilibrium pH value is calculated based on the solubility product constant, ion valence state, and preset target concentration, using the following formula:

[0213] ;

[0214] in, Indicates the equilibrium pH value. Represents the solubility product constant. The preset chemical coefficients, Indicates the valence state of the ion. Indicates the target concentration. Represents a logarithm to the base 10;

[0215] A precipitation pH value sequence was identified based on the precipitation pH range, which includes multiple precipitation pH values.

[0216] For each precipitation pH value in the precipitation pH value sequence, perform the following operation:

[0217] The precipitation rate is calculated based on the equilibrium pH and the precipitation pH, using the following formula:

[0218] ;

[0219] in, Indicates the precipitation rate. Indicates the pH value of the precipitate;

[0220] The precipitation efficiency is calculated based on the precipitation formation rate, using the following formula:

[0221] ;

[0222] in, This represents the precipitation efficiency, where λ is the preset reaction rate adjustment coefficient.

[0223] By summing the precipitation efficiencies, multiple precipitation efficiencies are obtained;

[0224] The maximum precipitation efficiency was determined based on multiple precipitation efficiencies, where the maximum precipitation efficiency is the largest among the multiple precipitation efficiencies.

[0225] The precipitation pH value corresponding to the maximum precipitation efficiency is taken as the optimal precipitation pH value.

[0226] It needs to be explained that the solubility product constant refers to the constant product of the concentrations of all ions when a precipitate reaches precipitation-dissolution equilibrium in a solution. The equilibrium pH value is the pH at which the metal ions just begin to precipitate significantly, given a target concentration, solubility product constant, and ion valence states. The target concentration is a value manually set by the staff of the waste tungsten slag treatment plant based on the required recovery efficiency. For example, if the required recovery efficiency is... The target concentration is The chemical coefficient is a value manually set by the staff of the waste tungsten slag treatment plant based on the upper limit of the solution's pH. For example, if the upper limit of the aqueous solution's pH is 14, then the chemical coefficient is 14. Determining the precipitation pH value sequence based on the precipitation pH range means uniformly selecting several discrete pH values ​​within the precipitation pH range and using these discrete pH values ​​as the precipitation pH value sequence. The precipitation formation rate refers to the proportion of valuable metal ions that actually precipitate from the solution; a higher precipitation formation rate indicates a higher proportion of valuable metal ions that actually precipitate from the solution. Precipitation efficiency is an indicator used to quantify the actual effect of the precipitation operation; a higher precipitation efficiency indicates a better actual effect of the precipitation operation. The reaction rate adjustment coefficient is a value manually set by the staff of the waste tungsten slag treatment plant; optionally, the reaction rate adjustment coefficient is 1.1. The optimal precipitation pH value refers to the precipitation pH value corresponding to the maximum precipitation efficiency.

[0227] S7. Based on the pH gradient sequence and tungsten-containing solution, multiple sets of valuable metals were identified, and the gradient separation of valuable metals was completed.

[0228] Specifically, the identification of multiple sets of valuable metals based on pH gradient sequences and tungsten-containing solutions includes:

[0229] Extracting the first from the pH gradient sequence The optimal pH value for precipitation, among which... The initial value is 1;

[0230] The target solution was identified based on the tungsten-containing solution and the optimal precipitation pH.

[0231] The target solution was filtered to obtain a collection of valuable metals and a supernatant.

[0232] make ,Will As The supernatant was then used as a tungsten-containing solution and returned to the step of extracting the first tungsten from the pH gradient sequence. The optimal pH value for precipitation was determined by the following steps until... By summing the sets of valuable metals, we obtain multiple sets of valuable metals, among which... This represents the number of optimal precipitation pH values ​​in the pH gradient sequence.

[0233] For example, if the pH gradient sequence is: 1, 2, 3, 4, 5, 6, 7, then the third optimal precipitation pH value extracted from the pH gradient sequence is: 3.

[0234] It should be explained that identifying the target solution based on the tungsten-containing solution and the optimal precipitation pH value means: using a tungsten-containing solution as a base, adjusting the pH of the tungsten-containing solution to the optimal precipitation pH value to obtain a solution for subsequent separation operations; this solution is the target solution. Filtering the target solution means: using membrane separation to separate the solid-phase precipitate from the liquid phase in the target solution, so as to recover the precipitate and obtain a clear supernatant. The valuable metal aggregate refers to the solid phase formed during the precipitation operation of the target solution and recovered through filtration. The supernatant refers to the clear liquid phase obtained after precipitation and filtration of the target solution.

[0235] For example, after obtaining multiple sets of valuable metals, Xiao Zhang completed the separation of valuable metals from the leachate of waste tungsten slag.

[0236] To address the problems described in the background section, this invention obtains waste tungsten slag, pre-treats it to obtain treated waste tungsten slag. This invention effectively removes impurities and activates the material through pre-treatment, creating favorable conditions for subsequent efficient leaching. Furthermore, samples are taken from the treated waste tungsten slag to obtain treated samples. This invention ensures that the obtained samples are representative and accurately reflect the properties of the entire batch of material by standardizing the sampling process. Based on the treated samples, the sample pass rate is confirmed. This invention quantitatively evaluates the quality of the pre-treated material, facilitating process flow. This provides key decision-making basis by comparing the sample pass rate with a preset pass threshold. If the sample pass rate is less than the pass threshold, the treated waste tungsten slag is treated as waste tungsten slag, and the process returns to the pretreatment step until the sample pass rate is greater than or equal to the pass threshold. Then, the treated waste tungsten slag is treated as waste tungsten slag to be acid-leached. It is evident that this embodiment of the invention establishes a closed-loop feedback and cyclical processing mechanism to forcibly ensure the quality of raw materials entering the core leaching process, stabilizing the process from the source and achieving efficient recovery of valuable metals from the waste tungsten slag leachate. Based on the waste tungsten slag to be acid-leached, the optimal acid leaching temperature is determined, and the optimal acid leaching temperature is used to treat the waste tungsten slag. Acid leaching of waste tungsten slag yields a tungsten slag leachate. This embodiment of the invention determines the optimal reaction temperature based on specific material characteristics, maximizing the leaching efficiency of the target metal and suppressing impurity dissolution. Based on the waste tungsten slag leachate, a tungsten-containing solution is identified. This embodiment of the invention effectively separates and enriches tungsten-containing components from a complex leaching system, laying the foundation for subsequent precise separation and purification, and achieving efficient recovery of valuable metals from the waste tungsten slag leachate. Sampling of the tungsten-containing solution yields a solution sample. This embodiment of the invention monitors the quality of key intermediate products and tracks the solution chemistry in real time. The properties ensure stable and reliable input conditions for the separation process. Based on solution samples, a pH gradient sequence was identified. This invention provides core operating parameters for the selective separation of multiple valuable metals by accurately measuring and constructing a stepwise precipitation pH control sequence. Based on the pH gradient sequence and the tungsten-containing solution, multiple sets of valuable metals were identified, completing the gradient separation of valuable metals. This invention utilizes the pH differences in precipitation from different metal hydroxides to achieve sequential, efficient, and clean separation and recovery of valuable metals such as tungsten, cobalt, and nickel, realizing the efficient recovery of valuable metals from waste tungsten slag leachate. Therefore, this invention can achieve the efficient recovery of valuable metals from waste tungsten slag leachate.

[0237] like Figure 2 The diagram shown is a functional block diagram of a valuable metal gradient separation system for leaching waste tungsten slag provided in an embodiment of the present invention.

[0238] The valuable metal gradient separation system 100 for leaching waste tungsten slag described in this invention can be installed in an electronic device. Depending on the functions implemented, the valuable metal gradient separation system 100 for leaching waste tungsten slag may include a basic raw material acquisition module 101, a basic raw material screening module 102, a tungsten-containing solution acquisition module 103, and a valuable metal separation module 104. The module described in this invention can also be referred to as a unit, which refers to a series of computer program segments that can be executed by an electronic device processor and perform a fixed function, and which are stored in the memory of the electronic device.

[0239] The basic raw material acquisition module 101 is used to acquire waste tungsten slag, pre-treat the waste tungsten slag to obtain treated waste tungsten slag, sample the treated waste tungsten slag to obtain treated samples, and confirm the sample qualification rate based on the treated samples.

[0240] The basic raw material screening module 102 is used to compare the sample pass rate with the preset pass threshold. If the sample pass rate is less than the pass threshold, the waste tungsten slag to be processed is treated as waste tungsten slag, and the process returns to the step of pre-treating the waste tungsten slag until the sample pass rate is greater than or equal to the pass threshold, and the waste tungsten slag to be processed is treated as waste tungsten slag to be acid leached.

[0241] The tungsten-containing solution acquisition module 103 is used to determine the optimal acid leaching temperature based on the waste tungsten slag to be acid leached, to perform acid leaching treatment on the waste tungsten slag to be acid leached at the optimal acid leaching temperature to obtain waste tungsten slag leachate, to determine the tungsten-containing solution based on the waste tungsten slag leachate, and to sample the tungsten-containing solution to obtain a solution sample.

[0242] The valuable metal separation module 104 is used to identify the pH gradient sequence based on the solution sample, and to identify multiple sets of valuable metals based on the pH gradient sequence and the tungsten-containing solution, thereby completing the valuable metal gradient separation.

[0243] In detail, the modules in the valuable metal gradient separation system 100 for leaching waste tungsten slag described in this embodiment of the invention employ the same methods as described above during use. Figure 1 The method used is the same as the gradient separation method for valuable metals in waste tungsten slag leachate described in the article, and can produce the same technical effect, so it will not be repeated here.

[0244] like Figure 3 The diagram shown is a schematic diagram of an electronic device for implementing a method for gradient separation of valuable metals in waste tungsten slag leachate, according to an embodiment of the present invention.

[0245] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as a program for a method of gradient separation of valuable metals for leaching waste tungsten slag.

[0246] The memory 11 includes at least one type of readable storage medium, such as flash memory, portable hard drive, multimedia card, card-type memory (e.g., SD or DX memory), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 1, such as the portable hard drive of the electronic device 1. In other embodiments, the memory 11 can be an external storage device of the electronic device 1, such as a plug-in portable hard drive, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the electronic device 1. Furthermore, the memory 11 includes both internal storage units and external storage devices of the electronic device 1. The memory 11 can be used not only to store application software and various types of data installed on the electronic device 1, such as code for a valuable metal gradient separation method program for leaching waste tungsten slag, but also to temporarily store data that has been output or will be output.

[0247] In some embodiments, the processor 10 may be composed of integrated circuits, such as a single packaged integrated circuit or multiple integrated circuits with the same or different functions, including combinations of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The processor 10 is the control unit of the electronic device, connecting various components of the entire electronic device through various interfaces and lines. It executes programs or modules stored in the memory 11 (e.g., a program for a gradient separation method of valuable metals in waste tungsten slag leaching solution), and calls data stored in the memory 11 to perform various functions of the electronic device 1 and process data.

[0248] The bus 12 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 can be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to realize the connection and communication between the memory 11 and at least one processor 10, etc.

[0249] Figure 3 Only electronic devices with components are shown; it will be understood by those skilled in the art that... Figure 3The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown, or combine certain components, or have different component arrangements.

[0250] For example, although not shown, the electronic device 1 may also include a power supply (such as a battery) to power the various components. Preferably, the power supply can be logically connected to the at least one processor 10 through a power management device, thereby enabling functions such as charging management, discharging management, and power consumption management. The power supply may also include one or more DC or AC power supplies, recharging devices, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components. The electronic device 1 may also include various sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be described in detail here.

[0251] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a Wi-Fi interface, a Bluetooth interface, etc.), which is typically used to establish communication connections between the electronic device 1 and other electronic devices.

[0252] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), and optionally, a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen, etc. The display may also be appropriately referred to as a screen or display unit, used to display information processed in the electronic device 1 and to display a visual user interface.

[0253] The program for the gradient separation of valuable metals in waste tungsten slag leaching solution stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When run in the processor 10, it can achieve the following:

[0254] Obtain waste tungsten slag, pre-treat the waste tungsten slag to obtain treated waste tungsten slag;

[0255] Samples were taken from the treated waste tungsten slag to obtain the treated samples;

[0256] The sample pass rate was determined based on the processed samples;

[0257] Compare the sample pass rate with the preset pass threshold. If the sample pass rate is less than the pass threshold, treat the waste tungsten slag as waste tungsten slag and return to the pretreatment step of the waste tungsten slag until the sample pass rate is greater than or equal to the pass threshold. Then treat the waste tungsten slag as waste tungsten slag to be acid leached.

[0258] Based on the determination of the optimal acid leaching temperature of the waste tungsten slag to be acid leached, the waste tungsten slag to be acid leached is acid leached at the optimal acid leaching temperature to obtain waste tungsten slag leachate.

[0259] A tungsten-containing solution was identified based on the leachate from waste tungsten slag.

[0260] A sample of the tungsten-containing solution was taken to obtain a solution sample;

[0261] pH gradient sequence was identified based on solution samples;

[0262] Multiple sets of valuable metals were identified based on pH gradient sequences and tungsten-containing solutions, thus completing the gradient separation of valuable metals.

[0263] Specifically, the processor 10's implementation method for the above instructions can be found in [reference needed]. Figures 1 to 3 The descriptions of the relevant steps in the corresponding embodiments are not repeated here.

[0264] Furthermore, if the modules / units integrated in the electronic device 1 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, or a read-only memory (ROM).

[0265] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor of an electronic device, can perform the following:

[0266] Obtain waste tungsten slag, pre-treat the waste tungsten slag to obtain treated waste tungsten slag;

[0267] Samples were taken from the treated waste tungsten slag to obtain the treated samples;

[0268] The sample pass rate was determined based on the processed samples;

[0269] Compare the sample pass rate with the preset pass threshold. If the sample pass rate is less than the pass threshold, treat the waste tungsten slag as waste tungsten slag and return to the pretreatment step of the waste tungsten slag until the sample pass rate is greater than or equal to the pass threshold. Then treat the waste tungsten slag as waste tungsten slag to be acid leached.

[0270] Based on the determination of the optimal acid leaching temperature of the waste tungsten slag to be acid leached, the waste tungsten slag to be acid leached is acid leached at the optimal acid leaching temperature to obtain waste tungsten slag leachate.

[0271] A tungsten-containing solution was identified based on the leachate from waste tungsten slag.

[0272] A sample of the tungsten-containing solution was taken to obtain a solution sample;

[0273] pH gradient sequence was identified based on solution samples;

[0274] Multiple sets of valuable metals were identified based on pH gradient sequences and tungsten-containing solutions, thus completing the gradient separation of valuable metals.

[0275] In the embodiments provided by this invention, it should be understood that the disclosed devices, systems, and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative, and actual implementations may have other classification methods.

[0276] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0277] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional modules.

[0278] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0279] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for gradient separation of valuable metals in leaching solution of waste tungsten slag, characterized in that, The method includes: Obtain waste tungsten slag, pre-treat the waste tungsten slag to obtain treated waste tungsten slag; Samples were taken from the treated waste tungsten slag to obtain the treated samples; The sample pass rate was determined based on the processed samples; Compare the sample pass rate with the preset pass threshold. If the sample pass rate is less than the pass threshold, treat the waste tungsten slag as waste tungsten slag and return to the pretreatment step of the waste tungsten slag until the sample pass rate is greater than or equal to the pass threshold. Then treat the waste tungsten slag as waste tungsten slag to be acid leached. Based on the determination of the optimal acid leaching temperature of the waste tungsten slag to be acid leached, the waste tungsten slag to be acid leached is acid leached at the optimal acid leaching temperature to obtain waste tungsten slag leachate. A tungsten-containing solution was identified based on the leachate from waste tungsten slag. A sample of the tungsten-containing solution was taken to obtain a solution sample; pH gradient sequence was identified based on solution samples; Multiple sets of valuable metals were identified based on pH gradient sequences and tungsten-containing solutions, thus completing the gradient separation of valuable metals.

2. The method for gradient separation of valuable metals in leaching solution of waste tungsten slag as described in claim 1, characterized in that, The pretreatment of waste tungsten slag to obtain treated waste tungsten slag includes: The waste tungsten slag is crushed to obtain crushed waste tungsten slag; Magnetic separation is performed on crushed waste tungsten slag to obtain iron-removed waste tungsten slag; The waste tungsten slag from iron removal is ground to obtain polished waste tungsten slag; The waste tungsten slag from grinding is cleaned to obtain treated waste tungsten slag.

3. The method for gradient separation of valuable metals in waste tungsten slag leachate as described in claim 2, characterized in that, The process of determining the sample pass rate based on processed samples includes: Acquire spectrometer, particle size analyzer, deionized water and conductivity meter; The tungsten content of the processed sample was determined using a spectrometer. The particle size of the processed sample was determined using a particle size analyzer to obtain the sample particle size value; The sample quality was confirmed, and the target deionized water was identified based on the sample quality and the deionized water. The treated sample was mixed with the target deionized water and stirred to obtain a mixed solution; The mixed solution is filtered to obtain the filtered solution; The conductivity of the filtered solution was tested using a conductivity meter to obtain the sample conductivity. The standardized tungsten content is calculated based on the tungsten content of the sample and the preset limit tungsten content. Calculate the standardized granularity value based on the sample granularity value and the preset limit granularity value; Standardized conductivity was determined based on sample conductivity and preset limiting conductivity. The sample pass rate is calculated based on standardized tungsten content, standardized particle size, and standardized conductivity.

4. The method for gradient separation of valuable metals in waste tungsten slag leachate as described in claim 3, characterized in that, The determination of the optimal acid leaching temperature based on the tungsten slag to be acid leached includes: Samples were taken from the tungsten slag to be leached to obtain test samples; Obtain the reaction tank and confirm its temperature control range; The temperature control range is uniformly sampled based on a preset temperature sampling interval to obtain multiple temperature test values. For each of the multiple temperature test values, perform the following operation: The target reaction tank was identified based on the reaction tank and temperature test values. Multiple reaction time points were identified based on preset time sampling intervals and preset reaction times. Start the target reaction tank, use the target reaction tank after startup to perform acid leaching treatment on the test sample, and record the time in real time from the start time of the target reaction tank to obtain the processing time; Extracting the first from multiple reaction time points The reaction time point and the There are several reaction time points, among which... The initial value is 2; When the time is equal to the first At the first reaction time point, the target reactor was identified based on the start-up time. A response effect index; When the time is equal to the first At the [number] reaction time point, the [number]th [time] was determined based on the target reactor after startup. A response effect index; Compare the first The first reaction effect index and the second The reaction effect index, if the first... The reaction effect index is greater than that of the first. Each response effect index, then let ,Will As Returning to the extraction of the first from multiple reaction time points The reaction time point and the The steps at each reaction time point; If the first The reaction effect index is less than or equal to the first. The first response effect index will then be the first... The reaction time point corresponding to each reaction effect index is taken as the optimal reaction time; Based on temperature test values, optimal reaction time, and the first The acid leaching score is calculated using the reaction effect index, and the calculation formula is shown below: ； in, Indicates the acid leaching score. This indicates the temperature test value. Indicates the optimal reaction time. Indicates the first A response effect index Represents the natural logarithm. For the preset temperature weight, Preset reaction effect weights; Summarize the acid leaching scores to obtain multiple acid leaching scores; The optimal score was determined based on multiple acid leaching scores, where the optimal score was the highest acid leaching score among the multiple acid leaching scores; The temperature value corresponding to the best score is taken as the optimal acid leaching temperature.

5. The method for gradient separation of valuable metals in waste tungsten slag leachate as described in claim 4, characterized in that, The target reactor identified after startup was the first The response effect index includes: Acquire pH meter and plasma spectrometer; The reaction sample was identified based on the target reaction tank after startup; The reaction sample was filtered to obtain the filtrate; The pH of the filtrate was measured using a pH meter to obtain the pH of the filtrate. The concentration of tungsten ions in the filtrate was measured using an inductively coupled plasma spectrometer. Calculate the first based on the pH of the filtrate and the concentration of tungsten ions. A response effect index.

6. The method for gradient separation of valuable metals in waste tungsten slag leachate as described in claim 5, characterized in that, The method for identifying tungsten-containing solutions based on leaching solutions of waste tungsten slag includes: The physical property parameters of the leachate from the waste tungsten slag and the centrifuge were obtained. The physical property parameters included: solid density, average particle size, leachate viscosity and liquid density. The separation factor is calculated based on the solid density, liquid density, leachate viscosity, and average particle size. Calculate the separation rotation speed based on the separation factor and the preset target solid concentration; Calculate the centrifugation time based on the viscosity, liquid density, and solid density of the leachate. The tungsten-containing solution was identified based on the leachate from the waste tungsten slag, the separation speed, the centrifugation time, and the centrifuge.

7. The method for gradient separation of valuable metals in waste tungsten slag leachate as described in claim 6, characterized in that, The determination of the pH gradient sequence based on solution samples includes: Valuable metal analysis was performed on the solution sample to identify the types of valuable metals, which included multiple valuable metals. Perform the following operation on each of the multiple valuable metals: The pH range for precipitation was determined based on the valuable metals. The optimal precipitation pH value was determined based on the precipitation pH range. By summarizing the optimal precipitation pH values, multiple optimal precipitation pH values ​​were obtained; Multiple optimal precipitation pH values ​​were sorted to obtain a pH gradient sequence.

8. The method for gradient separation of valuable metals in waste tungsten slag leachate as described in claim 7, characterized in that, The determination of the optimal precipitation pH value based on the precipitation pH range includes: Obtain the solubility product constant and ion valence state; The equilibrium pH value is calculated based on the solubility product constant, ion valence state, and preset target concentration, using the following formula: ； in, Indicates the equilibrium pH value. Represents the solubility product constant. The preset chemical coefficients, Indicates the valence state of the ion. Indicates the target concentration. Represents a logarithm to the base 10; A precipitation pH value sequence was identified based on the precipitation pH range, which includes multiple precipitation pH values. For each precipitation pH value in the precipitation pH value sequence, perform the following operation: Calculate the precipitation rate based on the equilibrium pH and the precipitation pH. Calculate precipitation efficiency based on precipitation formation rate; By summing the precipitation efficiencies, multiple precipitation efficiencies are obtained; The maximum precipitation efficiency was determined based on multiple precipitation efficiencies, where the maximum precipitation efficiency is the largest among the multiple precipitation efficiencies. The precipitation pH value corresponding to the maximum precipitation efficiency is taken as the optimal precipitation pH value.

9. The method for gradient separation of valuable metals in waste tungsten slag leachate as described in claim 8, characterized in that, The identification of multiple sets of valuable metals based on pH gradient sequences and tungsten-containing solutions includes: Extracting the first from the pH gradient sequence The optimal pH value for precipitation, among which... The initial value is 1; The target solution was identified based on the tungsten-containing solution and the optimal precipitation pH. The target solution was filtered to obtain a collection of valuable metals and a supernatant. make ,Will As The supernatant was then used as a tungsten-containing solution and returned to the step of extracting the first tungsten from the pH gradient sequence. The optimal pH value for precipitation was determined by the following steps until... By summing the sets of valuable metals, we obtain multiple sets of valuable metals, among which... This represents the number of optimal precipitation pH values ​​in the pH gradient sequence.

10. A valuable metal gradient separation system for leaching waste tungsten slag, characterized in that, The system includes: The basic raw material acquisition module is used to acquire waste tungsten slag, pre-treat the waste tungsten slag to obtain treated waste tungsten slag, sample the treated waste tungsten slag to obtain treated samples, and confirm the sample qualification rate based on the treated samples. The basic raw material screening module is used to compare the sample pass rate with the preset pass threshold. If the sample pass rate is less than the pass threshold, the waste tungsten slag to be processed is treated as waste tungsten slag, and the process returns to the step of pre-treating the waste tungsten slag until the sample pass rate is greater than or equal to the pass threshold, and the waste tungsten slag to be processed is treated as waste tungsten slag to be acid leached. The tungsten-containing solution acquisition module is used to determine the optimal acid leaching temperature based on the waste tungsten slag to be acid leached, to perform acid leaching treatment on the waste tungsten slag to be acid leached at the optimal acid leaching temperature, to obtain waste tungsten slag leachate, to determine the tungsten-containing solution based on the waste tungsten slag leachate, and to sample the tungsten-containing solution to obtain a solution sample. The valuable metal separation module is used to identify the pH gradient sequence based on the solution sample, and to identify multiple sets of valuable metals based on the pH gradient sequence and the tungsten-containing solution, thus completing the valuable metal gradient separation.

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