Ionic rare earth ion exchange process simulation method, device and electronic equipment

Abstract

The present application discloses a method, device and electronic device for simulating an ionic rare earth ion exchange process, which is applied to the technical field of simulating the leaching process of ionic rare earth ores, wherein the method includes: determining the ion exchange chemical reaction equation; based on the ion exchange chemical reaction equation, using the thermodynamic equilibrium equation and various mass conservation equations to construct a model to obtain an ion exchange mechanism model; based on the various calculation parameters, initial grade and initial concentration determined in advance, using the ion exchange mechanism model to simulate the ion exchange process, and obtaining the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process. Using the thermodynamic equilibrium model to construct the ion exchange mechanism model is more in line with the application conditions of the actual in-situ leaching process, the calculation process is simple, and by coupling with the leaching agent seepage model and the solute transport model, the whole process of in-situ leaching of ionic rare earth ores can be simulated, providing a theoretical basis for the actual leaching process.

Description

Technical Field

[0001] The present invention relates to the technical field of ionic rare earth ore process simulation, and in particular to an ionic rare earth ion exchange process simulation method, device, storage medium and electronic equipment. Background Art

[0002] Ionic rare earth ores are important resources, which are mainly mined by in-situ leaching. In the actual leaching process, a specific leaching agent penetrates into the ore-bearing layer through the injection pipe laid on the surface to extract the rare earth ions. The purpose of this method is to promote the ion exchange reaction between the rare earth ions adsorbed on the surface of the mineral particles and the active cations in the leaching agent, so as to achieve the replacement and extraction of the rare earth ions. The above reaction can be regarded as occurring between two immiscible phases (solid phase and liquid phase), and the rare earth ions or rare earth elements migrate from the solid phase to the liquid phase. The numerical simulation of this process in the prior art generally simplifies the ion exchange reaction into the analysis of rare earth ions and the adsorption process of active cations, and converts the ion exchange reaction process into the source and sink term of the pre-solute migration process by introducing the distribution coefficient, so as to realize the coupling solution of the solute migration process and the ion exchange reaction process in the in-situ leaching process of ionic rare earth ores. However, although the simplified model realizes the simulation of the leaching process, it cannot intuitively reflect the influence of chemical reactions on the leaching process, and the accuracy of the calculation results is low. The patent "CN112699618A A numerical simulation method for in-situ leaching of ionic rare earth ores" provides a numerical simulation method for chemical reactions in the in-situ leaching of rare earth ores based on computational fluid dynamics numerical simulation. The ion exchange reaction process is regarded as a reversible reaction, and a kinetic equation is established to reflect the relationship between the rare earth leaching rate and time. This method uses a kinetic equation to construct a mathematical model of the ion exchange reaction. Although the influence of the time parameter on the chemical reaction process is taken into account, the solution of the equation is relatively complicated. Summary of the invention

[0003] In view of this, the present invention provides a method, device, storage medium and electronic device for simulating an ionic rare earth ion exchange process, the main purpose of which is to solve the current problems of complex simulation calculations and inaccurate calculation results of the ionic rare earth in-situ leaching ion exchange process.

[0004] In order to solve the above problems, the present application provides a method for simulating the ion exchange process of ionic rare earth in-situ leaching, comprising:

[0005] Determine the ion exchange chemical reaction equation in the ion exchange process of the target ion type rare earth in-situ leaching to be simulated;

[0006] Based on the ion exchange chemical reaction equation, the thermodynamic equilibrium equation and various mass conservation equations are used to construct a model to obtain an ion exchange mechanism model for simulating the ion exchange process of ionic rare earth in-situ leaching;

[0007] Determining the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent;

[0008] Based on the calculation parameters, the initial grade and the initial concentration, the ion exchange process is simulated using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of ionic rare earth in-situ leaching.

[0009] Optionally, based on the ion exchange chemical reaction equation, the thermodynamic equilibrium equation and the mass conservation equation are used to construct a model to obtain an ion exchange mechanism model for simulating the ionic rare earth ion exchange process, including:

[0010] Based on the ion exchange chemical reaction equation, a predetermined thermodynamic classical model is used to construct a model to obtain an initial thermodynamic equilibrium model;

[0011] Based on various predetermined constraints, the initial thermodynamic equilibrium model is modified to obtain a target thermodynamic equilibrium model;

[0012] Model building is performed based on the ion exchange chemical reaction equation and each material element before and after the reaction corresponding to the ion exchange chemical reaction equation to obtain each mass conservation model;

[0013] Model conversion is performed based on the target thermodynamic equilibrium model and each of the mass conservation models to generate the ion exchange mechanism model.

[0014] Optionally, the thermodynamic equilibrium model includes: a thermodynamic equilibrium constant and concentration parameters of each material element after the reaction, and the model conversion based on the target thermodynamic equilibrium model and each mass conservation model to generate the ion exchange mechanism model includes:

[0015] The concentration parameter expressions of the material elements after the reaction in the mass conservation models are used to replace the corresponding concentration parameters in the thermodynamic equilibrium model to obtain a first coupling equation;

[0016] Based on the first coupled equation, a first coefficient set of a univariate quartic equation for the concentration parameter of active cations in the leaching agent after the reaction is determined, wherein each first coefficient is calculated from the concentration parameter of each material element before the reaction, the porosity of the target ionic rare earth, and the ore body density of the target ionic rare earth;

[0017] transforming the first coupling equation using the first coefficient set to obtain a second coupling equation;

[0018] Based on the second coupled equation, determining a second coefficient set of a univariate quartic equation for a concentration parameter of active cations in the post-reaction leaching agent, wherein the second coefficient set is calculated from each of the first coefficients and an equilibrium constant;

[0019] Based on the second coefficient set, an ion exchange mechanism model for simulating the ionic rare earth in-situ leaching process is constructed.

[0020] Optionally, the calculation parameters include: the porosity of the target ionic rare earth, the ore body density of the target ionic rare earth, and the material state of each material element before and after the reaction. Based on the calculation parameters, the initial grade and the initial concentration, the ion exchange mechanism model is used to simulate the ion exchange process of the ionic rare earth to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the rare earth in-situ leaching ion exchange process, specifically including:

[0021] The whole process of in-situ leaching is divided into several reaction stages;

[0022] Based on the calculation parameters, the initial grade and the initial concentration are calculated from the first reaction stage according to a predetermined reaction time interval and the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in each reaction stage of the rare earth in-situ leaching ion exchange process.

[0023] Optionally, based on the calculation parameters, the initial grade and the initial concentration, the ion exchange process is simulated using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of ionic rare earth in-situ leaching, including:

[0024] Based on the calculation parameters, the initial grade and the initial concentration are calculated and processed using the ion exchange mechanism model to obtain the first parameters of each material element after the reaction corresponding to the first reaction time interval, wherein the first parameters include the rare earth ion concentration value after the reaction corresponding to the first reaction time interval;

[0025] Based on each of the first parameters, calculating and obtaining a rare earth ion leaching rate corresponding to a first reaction time interval;

[0026] Starting from the second reaction time interval, the first parameter of each material element after the reaction generated based on each of the calculation parameters and the reaction time interval before the current reaction time interval is calculated and processed using the ion exchange mechanism model to obtain the second parameter of each material element after the reaction corresponding to each non-first reaction time interval, wherein each of the second parameters includes the rare earth ion concentration value after the reaction corresponding to each non-first reaction time interval;

[0027] Based on each of the second parameters, the rare earth ion leaching rate corresponding to each non-first reaction time interval is calculated and obtained.

[0028] Optionally, the method further includes:

[0029] The concentration values ​​of each material element before the reaction corresponding to each reaction time interval, the concentration values ​​of each material element after the reaction corresponding to each reaction time interval and the real-time rare earth ion leaching rate in the process of ionic rare earth in-situ leaching are displayed.

[0030] Optionally, after simulating the ion exchange process using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the ionic rare earth in-situ leaching, the method further comprises:

[0031] Comparing the rare earth ion leaching rate of each of the rare earth ions with the target rare earth ion leaching rate to obtain a comparison result;

[0032] When the comparison result shows that the leaching rates of the rare earth ions are all lower than the target leaching rate of the rare earth ions, the concentration of the target leaching agent is adjusted until, based on the calculation coefficients, the initial grade and the intermediate concentration of the target leaching agent after concentration adjustment, the ion exchange mechanism model is used to simulate the in-situ leaching process of ionic rare earths, and when several target intermediate rare earth ion leaching rates among the intermediate rare earth ion leaching rates obtained are greater than or equal to the target rare earth ion leaching rate, the target concentration of the target leaching agent for in-situ leaching of the ionic rare earths is determined;

[0033] When the comparison result shows that some target rare earth ion leaching rates among the rare earth ion leaching rates are greater than or equal to the target rare earth ion leaching rate, the initial concentration is determined as the target concentration of the target leaching agent.

[0034] In order to solve the above problems, the present application provides an ionic rare earth in-situ leaching process simulation device, comprising:

[0035] The first determination module is used to determine the ion exchange chemical reaction equation in the ion exchange process of the target ion type rare earth in-situ leaching to be simulated;

[0036] A model building module, for building a model based on the ion exchange chemical reaction equation, using thermodynamic equilibrium equations and various mass conservation equations to obtain an ion exchange mechanism model for simulating the ion exchange process of ionic rare earth in-situ leaching;

[0037] The second determination module is used to determine the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent;

[0038] The simulation module is used to simulate the ion exchange process based on the calculation parameters, the initial grade and the initial concentration using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of ionic rare earth in-situ leaching.

[0039] In order to solve the above problems, the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned ionic rare earth ion exchange process simulation method are implemented.

[0040] To solve the above problems, the present application provides an electronic device, which comprises at least a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps of the above-mentioned method for simulating the ionic rare earth ion exchange process when executing the computer program in the memory.

[0041] Beneficial effects of the present application: The present application constructs an ion exchange mechanism model of ionic rare earth ore by applying a multiphase ion exchange chemical reaction equation, using a thermodynamic equilibrium mathematical model corresponding to the ion exchange chemical reaction equation and various mass conservation equations, and determines the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent based on the actual exploration records; and based on the calculation parameters, the initial grade and the initial concentration, the ion exchange mechanism model is used to simulate the ion exchange process in the ion rare earth in-situ leaching, and the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the ionic rare earth in-situ leaching is obtained. And by coupling with the leaching agent seepage model and the solute transport model to realize the whole process simulation of the in-situ leaching process of the target ionic rare earth ore, it can be used to reveal the mapping relationship between the rare earth ion leaching process and the actual process control to provide a basis for the actual leaching process.

[0042] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0044] Figure 1 A schematic diagram of a process flow of a method for simulating an ionic rare earth ion exchange process provided in an embodiment of the present application is shown;

[0045] Figure 2 A schematic flow chart of a method for simulating an ionic rare earth ion exchange process provided by another embodiment of the present application is shown;

[0046] Figure 3 A structural block diagram of an ionic rare earth ion exchange process simulation method device provided in yet another embodiment of the present application is shown. DETAILED DESCRIPTION

[0047] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0048] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.

[0049] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0050] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0051] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art will be able to readily implement many other equivalent forms of the present application.

[0052] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0053] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present application. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0054] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0055] The present application embodiment provides a method for simulating an ionic rare earth ion exchange process, such as Figure 1 As shown, including:

[0056] Step S101: determining the ion exchange chemical reaction equation in the ion exchange process of the target ion-type rare earth in-situ leaching to be simulated;

[0057] In the specific implementation process, according to the target ionic rare earth to be simulated and the selected leaching agent, the ion exchange chemical reaction equation of the in-situ leaching process of the target ionic rare earth using the leaching agent is determined.

[0058] Step S102: Based on the ion exchange chemical reaction equation, a model is constructed using thermodynamic equilibrium equations and mass conservation equations to obtain an ion exchange mechanism model for simulating the ion exchange process of ionic rare earth in-situ leaching;

[0059] In the specific implementation process, based on the ion exchange chemical reaction equation, a predetermined thermodynamic classical model is used to construct a model to obtain a thermodynamic equilibrium model; based on the ion exchange chemical reaction equation and the various material elements before and after the reaction corresponding to the ion exchange chemical reaction equation, a model is constructed to obtain various mass conservation models; based on the thermodynamic equilibrium model and the various mass conservation models, a model conversion is performed to generate the ion exchange mechanism model.

[0060] Step S103: determining the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent;

[0061] In the specific implementation process, the calculation parameters include: the porosity of the target ionic rare earth, the ore body density of the target ionic rare earth, and the material state of each material element before and after the reaction, and the material state is solid, liquid, etc.

[0062] Step S104: Based on the calculation parameters, the initial grade and the initial concentration, the ion exchange process is simulated using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of ionic rare earth in-situ leaching.

[0063] In the specific implementation process, the reaction stages of the in-situ leaching ion exchange process are divided to obtain a plurality of reaction stages; based on the calculation parameters, the initial grade and the initial concentration are calculated and processed starting from the first reaction stage according to a predetermined reaction time interval using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in each reaction stage of the rare earth in-situ leaching process.

[0064] This application uses a multiphase ion exchange chemical reaction equation, a thermodynamic equilibrium mathematical model corresponding to the ion exchange chemical reaction equation, and various mass conservation equations to construct an ion exchange mechanism model of an ionic rare earth ore, and determines the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent based on actual exploration records; and based on the calculation parameters, the initial grade, and the initial concentration, the ion exchange mechanism model is used to simulate the ion exchange process of the ionic rare earth in-situ leaching, and the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the ionic rare earth in-situ leaching is obtained. The simulation of the ion exchange process of the in-situ leaching of the target ionic rare earth ore is realized, and coupling with the leaching agent seepage model and the solute transport model can realize the simulation of the entire in-situ leaching process of the ionic rare earth ore, so that it can be used to reveal the mapping relationship between the rare earth ion leaching process and the actual process control to provide a basis for the actual leaching process.

[0065] Another embodiment of the present application provides another ionic rare earth ion exchange process simulation method, such as Figure 2 As shown, including:

[0066] Step S201: determining the ion exchange chemical reaction equation in the ion exchange process of the target ion-type rare earth in-situ leaching to be simulated;

[0067] During the specific implementation of this step, during the actual leaching process, a specific leaching agent penetrates into the ore-bearing layer through the injection pipe laid on the surface to extract the rare earth ions. The purpose is to promote the ion exchange reaction between the rare earth ions adsorbed on the surface of the mineral particles and the active cations in the leaching agent, thereby achieving the replacement and extraction of the rare earth ions. The above reaction can be regarded as occurring between two immiscible phases (solid phase and liquid phase), and the rare earth ions or rare earth elements migrate from the solid phase to the liquid phase. Therefore, the chemical reaction at the solid-liquid interface can be expressed by the following formula (1):

[0068] Wherein, N represents the active cation in the leaching agent, and Me represents the valuable metal element, i.e., the rare earth element. The target leaching agent may be ammonium sulfate, calcium sulfate, or magnesium sulfate, etc.; the rare earth element may include gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, and lutetium, etc. This application replaces each rare earth element as a whole, and does not distinguish the type of rare earth element.

[0069] Step S202: Based on the ion exchange chemical reaction equation, a predetermined thermodynamic classical model is used to construct a model to obtain an initial thermodynamic equilibrium model;

[0070] In the specific implementation process of this step, based on the ion exchange chemical reaction equation, a predetermined thermodynamic classical model is used to construct a model to obtain an initial thermodynamic equilibrium model. The mathematical expression of the predetermined thermodynamic classical model can be expressed as the following formula (2):

[0071] Where K is the thermodynamic equilibrium constant, [] represents the solid phase concentration, and () represents the liquid phase concentration.

[0072] Step S203: based on various predetermined constraints, modifying the initial thermodynamic equilibrium model to obtain a target thermodynamic equilibrium model;

[0073] During the specific implementation of this step, the predetermined constraints are: (1) The chemical reaction at the solid-liquid interface is the key step in controlling the ion exchange process; (2) The mass transfer process involved in the ion exchange process, including the migration of valuable metal ions and active cations, can be considered to occur instantaneously; (3) The chemical reaction occurring at the solid-liquid interface can be considered to reach a steady-state chemical equilibrium; (4) Neither the reactants nor the products will be enriched at the solid-liquid interface. Combined with the material form before and after the chemical reaction in this application, the thermodynamic equilibrium constant equation when the reaction reaches a steady-state equilibrium is obtained, and the target thermodynamic equilibrium model is constructed. The calculation formula of the target thermodynamic equilibrium model is shown in the following formula (3):

[0074] in, is the active cation concentration in the target leaching agent (g / l); is the concentration of valuable metal ions in the target leaching agent (g / l), is the active cation concentration on the ionic rare earth ore body (g / g); is the concentration of valuable metal ions in ionic rare earth ore (g / g), and the | represents the concentration after ion exchange reaction.

[0075] Step S204: constructing models based on the ion exchange chemical reaction equation and the material elements before and after the reaction corresponding to the ion exchange chemical reaction equation to obtain mass conservation models;

[0076] In the specific implementation process of this step, the ion exchange reaction thermodynamic mass balance analysis table of the mass before reaction, mass after reaction and reaction amount corresponding to the elemental state of each substance in the in-situ leaching process of the target ion rare earth ore is shown in Table 1:

[0077] Table 1 Mass balance analysis of ion exchange reaction

[0078]

[0079] Table 1

[0080] Among them, V aq is the volume of the liquid phase during calculation, m s is the mass of the solid phase during calculation, M M and M N is the relative molecular mass of the valuable metal ions and active cations of the leaching agent, aq represents the liquid phase (leaching agent\mother liquor), s represents the solid phase (ore body), | 前 represents before the ion exchange reaction, | 后 Represents after ion exchange reaction.

[0081] Based on the above thermodynamic mass balance analysis table, a model is constructed based on the ion exchange chemical reaction equation and the material elements before and after the reaction corresponding to the ion exchange chemical reaction equation. The obtained mass conservation models can be expressed as the following formulas (4)-(7):

[0082]

[0083] Step S205: performing model conversion based on the target thermodynamic equilibrium model and each of the mass conservation models to generate the ion exchange mechanism model;

[0084] In the specific implementation process of this step, the concentration parameter expression of each material element after the reaction in each mass conservation model is used to replace the corresponding concentration parameter in the thermodynamic equilibrium model to obtain the first coupling equation; in the mass conservation model (5) It can be shown as the following formula (8): V is the total volume of the selected leaching area, n is the porosity, ρ b is the density of the ore body. Because the porosity and ore body density can be directly obtained from the exploration data, It can be regarded as a known parameter. Assuming V aq / m s =a and M N / M M =b, formula (5)-formula (7) can be transformed into the following formula (9)-formula (11):

[0085]

[0086] Substituting the concentration value data expressions (4), (9)-(11) of each substance after the reaction into the target thermodynamic equilibrium model (3), the first coupling equation is obtained, which can be expressed as the following formula (12):

[0087]

[0088] Based on the first coupled equation, a first coefficient set of a univariate quartic equation for the concentration parameter of active cations in the leaching agent after the reaction is determined, wherein each first coefficient is calculated from the concentration parameter of each substance element before the reaction, the porosity of the target ionic rare earth, and the ore body density of the target ionic rare earth; specifically, formula (12) is regarded as The first set of coefficients of the quartic equation is determined by a , b, f, d, e can be expressed as follows:

[0089] V aq / m s =a

[0090] M N / M M =b

[0091]

[0092] The first coupling equation is transformed using the first coefficient set to obtain a second coupling equation; the mathematical expression of the second coupling equation obtained by substituting the first coefficient set into the first coupling equation is as shown in the following formula (14):

[0093]

[0094] Based on the second coupled equation, a second coefficient set of a univariate quartic equation for the concentration parameter of active cations in the post-reaction leaching agent is determined, wherein the second coefficient set is calculated from each first coefficient and an equilibrium constant; the second coupled equation is expanded to obtain the following mathematical expression (15):

[0095]

[0096] Consider formula (15) as The quartic equation in one variable is , then the determined second coefficient set A, B, D, E, F can be expressed as follows:

[0097]

[0098] Based on the second coefficient set, an ion exchange mechanism model for simulating the ionic rare earth in-situ leaching process is constructed. The mathematical expression of the ion exchange mechanism model is shown in the following formula (17):

[0099]

[0100] In practical applications, the only correct solution obtained by calculating formula (17) is the concentration of active cations in the liquid phase after the reaction: Then, based on formulas (4) to (7), the concentration of the valuable metal ions in the liquid phase (leaching agent\leaching mother liquor) after the reaction and the concentration distribution of each substance in the solid phase (ore body) can be obtained.

[0101] Step S206: Divide the whole process of in-situ leaching into reaction stages to obtain several reaction stages:

[0102] In the specific implementation process of this step, the reaction stages can be divided according to the whole process of the target ion rare earth ore, which is divided into the following steps: Step 1: active cations migrate from the bulk phase of the leaching agent to the solid-liquid interface; Step 2: active cations react chemically with valuable metal ions; Step 3: the chemical reaction at the solid-liquid interface reaches chemical equilibrium; Step 4: valuable metal ions migrate from the solid-liquid interface to the bulk phase of the leaching agent.

[0103] Step S207: Based on the calculation parameters, the initial grade and the initial concentration are calculated and processed using the ion exchange mechanism model to obtain the first parameters of each material element after the reaction corresponding to the first reaction time interval, wherein the first parameters include the rare earth ion concentration value after the reaction corresponding to the first reaction time interval;

[0104] In the specific implementation process of this step, each of the calculation parameters includes: the porosity of the target ionic rare earth, the ore body density of the target ionic rare earth, and the material state of each material element before and after the reaction. The porosity of the target ionic rare earth and the ore body density of the target ionic rare earth can be obtained according to the exploration record. The material state is liquid or solid. The immiscible liquid phase and solid phase defined in this application define the target leaching agent and the active cations contained and the rare earth cations replaced after the reaction as the liquid phase, and the ionic rare earth ore body before and after the ion exchange reaction is defined as the solid phase. The initial grade is the initial ore body rare earth ion concentration value, which can be measured according to the exploration experiment. Each of the calculation parameters, the initial grade and the initial concentration are substituted into the ion exchange mechanism model for calculation and processing to obtain the first parameter of each material element after the reaction corresponding to the first reaction time interval. Specifically, firstly, the calculation parameters, the initial grade and the initial concentration are calculated and processed to obtain the first coefficient value corresponding to each first coefficient; based on each of the first coefficient values ​​and the constant value K of the equilibrium constant k Perform calculation processing to obtain the second coefficient value corresponding to each second coefficient; based on each second coefficient value, use the ion exchange mechanism model to perform calculation processing to obtain the first parameter corresponding to the first reaction time interval; specifically, based on each second coefficient value, use the ion exchange mechanism model to perform calculation processing to obtain each initial concentration value of the active cation in the liquid phase after the reaction corresponding to the first reaction time interval; correct each initial concentration value to obtain the concentration value of the active cation in the liquid phase In practical applications, the calculation of a quartic equation will produce imaginary roots and negative roots, so the calculation results need to be corrected to obtain the concentration value of active cations in the liquid phase that meets the requirements. Based on the calculation parameters, the initial grade, the initial concentration and the concentration value of active cations in the liquid phase after the reaction corresponding to the first reaction time interval, the rare earth ion concentration value in the solid phase after the reaction corresponding to the first reaction time interval is calculated and processed. The rare earth ion concentration in the liquid phase after the reaction corresponding to the first reaction time interval And the concentration of active cations in the solid phase after the reaction corresponding to the first reaction time interval

[0105] Step S208: Based on the first parameters and the initial phase, calculate and obtain the rare earth ion leaching rate corresponding to the first reaction time interval;

[0106] In the specific implementation process of this step, based on the rare earth ion concentration value in the liquid phase after the reaction in the first parameter The rare earth ion concentration value of the initial ore body is calculated and processed to obtain the rare earth ion leaching rate corresponding to the first reaction time interval.

[0107] Step S209: starting from the second reaction time interval, the first parameters of each material element after the reaction generated by the reaction time interval before the current reaction time interval are calculated and processed using the ion exchange mechanism model to obtain the second parameters of each material element after the reaction corresponding to each non-first reaction time interval, wherein each of the second parameters includes the rare earth ion concentration value after the reaction corresponding to each non-first reaction time interval;

[0108] In the specific implementation process of this step, starting from the second reaction time interval, each first parameter calculated in the previous reaction time interval is used as a pre-reaction parameter of the next reaction time interval for calculation and processing to obtain the second parameter of each material element after the reaction corresponding to each non-first reaction time interval.

[0109] Step S210: based on each of the second parameters and the initial grade, calculating and obtaining the rare earth ion leaching rate corresponding to each non-first reaction time interval;

[0110] In the specific implementation process of this step, based on the rare earth ion concentration value in the liquid phase after the reaction in each of the second parameters and the initial ore body rare earth ion concentration value are calculated and processed to obtain the rare earth ion leaching rate corresponding to each non-first reaction time interval. Each of the rare earth ion leaching rates is compared with the target rare earth ion leaching rate to obtain a comparison result; when the comparison result is that each of the rare earth ion leaching rates is less than the target rare earth ion leaching rate, the concentration of the target leaching agent is adjusted until the ion exchange mechanism model is used to simulate the ionic rare earth in-situ leaching process based on each of the calculation coefficients, the initial grade and the intermediate concentration of the target leaching agent after concentration adjustment, and when several target intermediate rare earth ion leaching rates among the intermediate rare earth ion leaching rates are greater than or equal to the target rare earth ion leaching rate, the target concentration of the target leaching agent for in-situ leaching of the ionic rare earth is determined; when the comparison result is that several target rare earth ion leaching rates among the rare earth ion leaching rates are greater than or equal to the target rare earth ion leaching rate, the initial concentration is determined as the target concentration of the target leaching agent.

[0111] Step S211: displaying the concentration values ​​of various material elements before and after the reaction corresponding to each reaction time interval in the process of ionic rare earth in-situ leaching, and the real-time rare earth ion leaching rate.

[0112] During the specific implementation of this step, the ion exchange process of in-situ leaching of ionic rare earth ore is displayed in real time, and the real-time concentration distribution field and grade distribution field are digitally displayed.

[0113] The present application determines the ion exchange chemical reaction equation of the target ion-type rare earth in-situ leaching process to be simulated; based on the ion exchange chemical reaction equation, a predetermined thermodynamic classical model is used to construct a model to obtain an initial thermodynamic equilibrium model; based on various predetermined constraints, the initial thermodynamic equilibrium model is corrected to obtain a target thermodynamic equilibrium model; full consideration and combination of actual leaching conditions to propose corresponding assumptions and make corresponding corrections to improve the calculation speed and accuracy of the solver; based on the ion exchange chemical reaction equation and the various material elements before and after the reaction corresponding to the ion exchange chemical reaction equation, a model is constructed to obtain various mass conservation models; based on the thermodynamic equilibrium model and each of the mass conservation models, a model conversion is performed to generate the ion exchange mechanism model; the ion exchange mechanism model is constructed using a thermodynamic equilibrium model to better fit the application conditions of the actual in-situ leaching process, thereby improving the accuracy of the calculation results. The calculation process of the rare earth ion leaching rate corresponding to each time interval calculated by the method of the present application is simple, and the simulation of the ion exchange process of in-situ leaching of ionic rare earth ores is realized. The ion exchange mechanism model of the present application can be coupled with the leaching agent seepage model and the solute transport model to realize the simulation of the entire in-situ leaching process of ionic rare earth ores, and can realize the real-time concentration distribution field and grade distribution field of the ion exchange process. Digital display provides a theoretical basis for the actual leaching process.

[0114] The present application embodiment provides an ionic rare earth ion exchange process simulation device, such as Figure 3 As shown, including:

[0115] The first determination module 1 is used to determine the ion exchange chemical reaction equation in the ion exchange process of the target ion type rare earth in-situ leaching to be simulated;

[0116] Model building module 2, for building a model based on the ion exchange chemical reaction equation, using thermodynamic equilibrium equations and various mass conservation equations to obtain an ion exchange mechanism model for simulating the ion exchange process of ionic rare earth in-situ leaching;

[0117] The second determination module 3 is used to determine the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent;

[0118] The simulation module 4 is used to simulate the ion exchange process based on the calculation parameters, the initial grade and the initial concentration using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of ionic rare earth in-situ leaching.

[0119] In the specific implementation process, the model construction module 2 is specifically used to, based on the ion exchange chemical reaction equation, use a predetermined thermodynamic classical model to construct a model to obtain an initial thermodynamic equilibrium model; based on various predetermined constraints, the initial thermodynamic equilibrium model is corrected to obtain a target thermodynamic equilibrium model; based on the ion exchange chemical reaction equation and the various material elements before and after the reaction corresponding to the ion exchange chemical reaction equation, a model is constructed to obtain various mass conservation models; based on the target thermodynamic equilibrium model and each of the mass conservation models, a model conversion is performed to generate the ion exchange mechanism model.

[0120] In the specific implementation process, the model construction module 2 is also used to replace the corresponding concentration parameters in the thermodynamic equilibrium model with the concentration parameter expressions of each material element after the reaction in each mass conservation model to obtain a first coupling equation; based on the first coupling equation, determine the first coefficient set of the quartic equation for the active cation concentration parameter in the leaching agent after the reaction, each first coefficient is calculated by the concentration parameters of each material element before the reaction, the porosity of the target ionic rare earth, and the ore body density of the target ionic rare earth; use the first coefficient set to transform the first coupling equation to obtain a second coupling equation; based on the second coupling equation, determine the second coefficient set of the quartic equation for the active cation concentration parameter in the leaching agent after the reaction, the second coefficient set is calculated by each first coefficient and the equilibrium constant; based on the second coefficient set, construct an ion exchange mechanism model for simulating the ion exchange process of ionic rare earth in-situ leaching.

[0121] In the specific implementation process, the calculation parameters include: the porosity of the target ionic rare earth, the ore body density of the target ionic rare earth and the material state of each material element before and after the reaction. The simulation module 4 is specifically used to: divide the reaction stages of the in-situ leaching ion exchange process to obtain several reaction stages; based on each of the calculation parameters, the initial grade and the initial concentration are calculated and processed from the first reaction stage according to a predetermined reaction time interval and using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in each reaction stage of the rare earth in-situ leaching ion exchange process.

[0122] In the specific implementation process, the simulation module 4 is also used to: based on each of the calculation parameters, the initial grade and the initial concentration, calculate and process using the ion exchange mechanism model to obtain the first parameter of each material element after the reaction corresponding to the first reaction time interval, wherein the first parameter includes the rare earth ion concentration value after the reaction corresponding to the first reaction time interval; based on each of the first parameters and the initial grade, calculate and obtain the rare earth ion leaching rate corresponding to the first reaction time interval; starting from the second reaction time interval, based on each of the calculation parameters and the first parameter of each material element after the reaction generated by the reaction time interval before the current reaction time interval, calculate and process using the ion exchange mechanism model to obtain the second parameter of each material element after the reaction corresponding to each non-first reaction time interval, wherein each of the second parameters includes the rare earth ion concentration value after the reaction corresponding to each non-first reaction time interval; based on each of the second parameters and the initial grade, calculate and obtain the rare earth ion leaching rate corresponding to each non-first reaction time interval.

[0123] In the specific implementation process, the ionic rare earth in-situ leaching process simulation device also includes: a display module, which is used to display the concentration values ​​of each material element before the reaction corresponding to each reaction time interval, the concentration values ​​of each material element after the reaction corresponding to each reaction time interval, and the real-time rare earth ion leaching rate in the ionic rare earth in-situ leaching process.

[0124] In a specific implementation process, the ionic rare earth in-situ leaching process simulation device also includes: a comparison module, which is specifically used to compare the leaching rate of each rare earth ion with the target rare earth ion leaching rate to obtain a comparison result; when the comparison result is that the leaching rate of each rare earth ion is less than the target rare earth ion leaching rate, the concentration of the target leaching agent is adjusted until the ionic rare earth in-situ leaching process is simulated based on the calculation coefficients, the initial grade and the intermediate concentration of the target leaching agent after concentration adjustment, and the ion exchange mechanism model is used to simulate the ionic rare earth in-situ leaching process. When several target intermediate rare earth ion leaching rates among the intermediate rare earth ion leaching rates are greater than or equal to the target rare earth ion leaching rate, the target concentration of the target leaching agent for in-situ leaching of the ionic rare earth is determined; when the comparison result is that several target rare earth ion leaching rates among the rare earth ion leaching rates are greater than or equal to the target rare earth ion leaching rate, the initial concentration is determined as the target concentration of the target leaching agent.

[0125] This application uses a multiphase ion exchange chemical reaction equation, a thermodynamic equilibrium mathematical model corresponding to the ion exchange chemical reaction equation, and various mass conservation equations to construct an ion exchange mechanism model of an ionic rare earth ore, and determines the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent based on actual exploration records; and based on the calculation parameters, the initial grade, and the initial concentration, the ion exchange mechanism model is used to simulate the ion exchange process in the ion rare earth in-situ leaching, and the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the ionic rare earth in-situ leaching is obtained. And by coupling with the leaching agent seepage model and the solute transport model to realize the full process simulation of the in-situ leaching process of the target ionic rare earth ore, it can be used to reveal the mapping relationship between the rare earth ion leaching process and the actual process control to provide a basis for the actual leaching process.

[0126] Another embodiment of the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the following method steps are implemented:

[0127] Step 1, determining the ion exchange chemical reaction equation of the target ion-type rare earth in-situ leaching process to be simulated;

[0128] Step 2: Based on the ion exchange chemical reaction equation, a model is constructed using thermodynamic equilibrium equations and mass conservation equations to obtain an ion exchange mechanism model for simulating the ionic rare earth in-situ leaching process;

[0129] Step 3, determining the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent;

[0130] Step 4: Based on the calculation parameters, the initial grade and the initial concentration, the ion exchange process is simulated using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of ionic rare earth in-situ leaching.

[0131] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0132] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0133] The specific implementation process of the above method steps can refer to the above-mentioned embodiments of any ionic rare earth ion exchange process simulation method, and this embodiment will not be repeated here.

[0134] This application uses a multiphase ion exchange chemical reaction equation, a thermodynamic equilibrium mathematical model corresponding to the ion exchange chemical reaction equation, and various mass conservation equations to construct an ion exchange mechanism model of an ionic rare earth ore, and determines the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent based on actual exploration records; and based on the calculation parameters, the initial grade, and the initial concentration, the ion exchange mechanism model is used to simulate the ion exchange process in the ion rare earth in-situ leaching, and the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the ionic rare earth in-situ leaching is obtained. And by coupling with the leaching agent seepage model and the solute transport model to realize the full process simulation of the in-situ leaching process of the target ionic rare earth ore, it can be used to reveal the mapping relationship between the rare earth ion leaching process and the actual process control to provide a basis for the actual leaching process.

[0135] Another embodiment of the present application provides an electronic device, which can be a server, and the electronic device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile and / or volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the electronic device is used to communicate with an external client through a network connection. When the electronic device program is executed by the processor, it realizes the functions or steps of a server-side method for simulating an ionic rare earth ion exchange process.

[0136] In one embodiment, an electronic device is provided, which may be a client. The electronic device includes a processor, a memory, a network interface, a display screen, and an input device connected via a system bus. The processor of the electronic device is used to provide computing and control capabilities. The memory of the electronic device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the electronic device is used to communicate with an external server via a network connection. When the electronic device program is executed by the processor, the functions or steps on the client side of an ionic rare earth ion exchange process simulation method are implemented.

[0137] Another embodiment of the present application provides an electronic device, comprising at least a memory and a processor, wherein the memory stores a computer program, and the processor implements the following method steps when executing the computer program in the memory:

[0138] Step 1, determining the ion exchange chemical reaction equation in the ion exchange process of the target ion type rare earth in-situ leaching to be simulated;

[0139] Step 2: Based on the ion exchange chemical reaction equation, a model is constructed using thermodynamic equilibrium equations and mass conservation equations to obtain an ion exchange mechanism model for simulating the ion exchange process of ionic rare earth in-situ leaching;

[0140] Step 3, determining the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent;

[0141] Step 4: Based on the calculation parameters, the initial grade and the initial concentration, the ion exchange process is simulated using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of ionic rare earth in-situ leaching.

[0142] The specific implementation process of the above method steps can refer to the above-mentioned embodiments of any ionic rare earth ion exchange process simulation method, and this embodiment will not be repeated here.

[0143] This application uses a multiphase ion exchange chemical reaction equation, a thermodynamic equilibrium mathematical model corresponding to the ion exchange chemical reaction equation, and various mass conservation equations to construct an ion exchange mechanism model of an ionic rare earth ore, and determines the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent based on actual exploration records; and based on the calculation parameters, the initial grade, and the initial concentration, the ion exchange mechanism model is used to simulate the ion exchange process in the ion rare earth in-situ leaching, and the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the ionic rare earth in-situ leaching is obtained. And by coupling with the leaching agent seepage model and the solute transport model to realize the full process simulation of the in-situ leaching process of the target ionic rare earth ore, it can be used to reveal the mapping relationship between the rare earth ion leaching process and the actual process control to provide a basis for the actual leaching process.

[0144] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.

Claims

1. A method for simulating an ionic rare earth ion exchange process, characterized in that: include: Determine the ion exchange chemical reaction equation in the ion exchange process of the target ion type rare earth in-situ leaching to be simulated; Based on the ion exchange chemical reaction equation, the thermodynamic equilibrium equation and various mass conservation equations are used to construct a model to obtain an ion exchange mechanism model for simulating the ion exchange process of ionic rare earth in-situ leaching; Determining the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent; Based on the calculation parameters, the initial grade and the initial concentration, the ion exchange process is simulated using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the ionic rare earth in-situ leaching; Based on the ion exchange chemical reaction equation, the thermodynamic equilibrium equation and the mass conservation equation are used to construct the model to obtain an ion exchange mechanism model for simulating the ionic rare earth ion exchange process, including: Based on the ion exchange chemical reaction equation, a predetermined thermodynamic classical model is used to construct a model to obtain an initial thermodynamic equilibrium model; Based on various predetermined constraints, the initial thermodynamic equilibrium model is modified to obtain a target thermodynamic equilibrium model; Model building is performed based on the ion exchange chemical reaction equation and each material element before and after the reaction corresponding to the ion exchange chemical reaction equation to obtain each mass conservation model; Performing model conversion based on the target thermodynamic equilibrium model and each of the mass conservation models to generate the ion exchange mechanism model; The thermodynamic equilibrium model includes: a thermodynamic equilibrium constant and concentration parameters of each material element after the reaction. The model conversion is performed based on the target thermodynamic equilibrium model and each mass conservation model to generate the ion exchange mechanism model, including: The concentration parameter expressions of the material elements after the reaction in the mass conservation models are used to replace the corresponding concentration parameters in the thermodynamic equilibrium model to obtain a first coupling equation; Based on the first coupled equation, a first coefficient set of a univariate quartic equation for the concentration parameter of active cations in the leaching agent after the reaction is determined, wherein each first coefficient is calculated from the concentration parameter of each material element before the reaction, the porosity of the target ionic rare earth, and the ore body density of the target ionic rare earth; transforming the first coupling equation using the first coefficient set to obtain a second coupling equation; Based on the second coupled equation, determining a second coefficient set of a univariate quartic equation for a concentration parameter of active cations in the post-reaction leaching agent, wherein the second coefficient set is calculated from each first coefficient and a thermodynamic equilibrium constant; Based on the second coefficient set, an ion exchange mechanism model for simulating the ion exchange process of ionic rare earth in-situ leaching is constructed.

2. The method according to claim 1, characterized in that The calculation parameters include: the porosity of the target ionic rare earth, the ore body density of the target ionic rare earth, and the material state of each material element before and after the reaction. Based on the calculation parameters, the initial grade and the initial concentration, the ion exchange mechanism model is used to simulate the ion exchange process of the ionic rare earth to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the rare earth in-situ leaching, which specifically includes: The whole process of in-situ leaching is divided into several reaction stages; Based on the calculation parameters, the initial grade and the initial concentration are calculated and processed from the first reaction stage according to a predetermined reaction time interval using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in each reaction stage of the rare earth in-situ leaching ion exchange process.

3. The method according to claim 2, characterized in that Based on the calculation parameters, the initial grade and the initial concentration, the ion exchange process is simulated using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the ionic rare earth in-situ leaching, including: Based on the calculation parameters, the initial grade and the initial concentration are calculated and processed using the ion exchange mechanism model to obtain the first parameters of each material element after the reaction corresponding to the first reaction time interval, wherein the first parameters include the rare earth ion concentration value after the reaction corresponding to the first reaction time interval; Based on each of the first parameters and the initial grade, calculating the rare earth ion leaching rate corresponding to the first reaction time interval; Starting from the second reaction time interval, the first parameter of each material element after the reaction generated based on each of the calculation parameters and the reaction time interval before the current reaction time interval is calculated and processed using the ion exchange mechanism model to obtain the second parameter of each material element after the reaction corresponding to each non-first reaction time interval, wherein each of the second parameters includes the rare earth ion concentration value after the reaction corresponding to each non-first reaction time interval; Based on each of the second parameters and the initial grade, the rare earth ion leaching rate corresponding to each non-first reaction time interval is calculated.

4. The method according to claim 1, characterized in that The method further comprises: The concentration values ​​of each material element before the reaction corresponding to each reaction time interval, the concentration values ​​of each material element after the reaction corresponding to each reaction time interval and the real-time rare earth ion leaching rate in the process of ionic rare earth in-situ leaching are displayed.

5. The method according to claim 1, characterized in that After simulating the ion exchange process using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of the ionic rare earth in-situ leaching, the method further includes: Comparing the rare earth ion leaching rate of each of the rare earth ions with the target rare earth ion leaching rate to obtain a comparison result; When the comparison result shows that the leaching rates of the rare earth ions are all lower than the target leaching rate of the rare earth ions, the concentration of the target leaching agent is adjusted until, based on the calculation parameters, the initial grade and the intermediate concentration of the target leaching agent after the concentration adjustment, the ion exchange mechanism model is used to simulate the ion exchange process of in-situ leaching of ionic rare earths, and when several target intermediate rare earth ion leaching rates among the intermediate rare earth ion leaching rates are greater than or equal to the target rare earth ion leaching rate, the target concentration of the target leaching agent for in-situ leaching of the ionic rare earths is determined; When the comparison result shows that some target rare earth ion leaching rates among the rare earth ion leaching rates are greater than or equal to the target rare earth ion leaching rate, the initial concentration is determined as the target concentration of the target leaching agent.

6. An ionic rare earth in-situ leaching process simulation device, characterized in that: include: The first determination module is used to determine the ion exchange chemical reaction equation in the ion exchange process of the target ion type rare earth in-situ leaching to be simulated; A model building module is used to build a model based on the ion exchange chemical reaction equation, using thermodynamic equilibrium equations and various mass conservation equations to obtain an ion exchange mechanism model for simulating the ion exchange process of ionic rare earth in-situ leaching, and is specifically used to: build a model based on the ion exchange chemical reaction equation using a predetermined thermodynamic classical model to obtain an initial thermodynamic equilibrium model; based on various predetermined constraints, modify the initial thermodynamic equilibrium model to obtain a target thermodynamic equilibrium model; build a model based on the ion exchange chemical reaction equation and various material elements before and after the reaction corresponding to the ion exchange chemical reaction equation to obtain various mass conservation models; perform model conversion based on the target thermodynamic equilibrium model and each of the mass conservation models to generate the ion exchange mechanism model; the thermodynamic equilibrium model includes: a thermodynamic equilibrium constant and concentration parameters of various material elements after the reaction, the target thermodynamic equilibrium model and Each of the mass conservation models is converted to generate the ion exchange mechanism model, including: replacing the concentration parameter corresponding to it in the thermodynamic equilibrium model with the concentration parameter expression of each of the material elements after the reaction in each of the mass conservation models to obtain a first coupling equation; based on the first coupling equation, determining a first coefficient set of a quartic equation for the concentration parameter of active cations in the leaching agent after the reaction, each first coefficient is calculated by the concentration parameter of each material element before the reaction, the porosity of the target ionic rare earth, and the ore body density of the target ionic rare earth; using the first coefficient set to transform the first coupling equation to obtain a second coupling equation; based on the second coupling equation, determining a second coefficient set of a quartic equation for the concentration parameter of active cations in the leaching agent after the reaction, the second coefficient set is calculated by each first coefficient and the thermodynamic equilibrium constant; based on the second coefficient set, constructing an ion exchange mechanism model for simulating the ion exchange process of in-situ leaching of ionic rare earths; The second determination module is used to determine the calculation parameters of the ion exchange mechanism model, the initial grade of the target ionic rare earth, and the initial concentration of the target leaching agent; The simulation module is used to simulate the ion exchange process based on the calculation parameters, the initial grade and the initial concentration using the ion exchange mechanism model to obtain the rare earth ion leaching rate corresponding to each reaction time interval in the ion exchange process of ionic rare earth in-situ leaching.

7. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for simulating an ionic rare earth ion exchange process according to any one of claims 1 to 5 are implemented.

8. An electronic device, characterized in that: The method comprises at least a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method for simulating an ionic rare earth ion exchange process according to any one of claims 1 to 5 when executing the computer program on the memory.

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