System and method for efficiently recovering germanium from germanium-rich zinc concentrate through oxygen pressure leaching

Abstract

The invention relates to the technical field of germanium metal recovery systems, and provides a system and method for efficiently recovering germanium through oxygen pressure leaching of germanium-rich zinc concentrate, and the system comprises an oxygen pressure regulation and control terminal, a temperature control terminal, a reaction kettle terminal, a separation terminal and a germanium extraction terminal; the oxygen pressure regulation and control terminal is used for generating and maintaining an oxygen pressure environment specified by an experimenter in the reaction kettle terminal; the temperature control terminal is used for controlling the temperature of the reaction kettle; the reaction kettle terminal is used for realizing oxygen pressure leaching reaction of the germanium-rich zinc concentrate; the separation terminal is used for separating the leachate from the solid residues from the reaction kettle terminal, so that germanium in a liquid phase enters the germanium extraction terminal; and the germanium extraction terminal is used for enriching and purifying germanium in the leachate to realize germanium recovery. The method has the effect of improving the germanium extraction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of germanium metal recovery systems, and in particular to a system and method for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate. Background Art

[0002] Germanium is a rare metal element, widely used in high-tech fields such as electronics, optical fiber, infrared optical devices, solar cells, etc. Since germanium is rarely distributed in nature and mostly exists in zinc and lead ores in a co-existing state, the extraction and recovery of germanium is particularly critical. Germanium-rich zinc concentrate is an important source of germanium resources. It is obtained through mineral processing or enrichment processes and has high germanium and zinc content. However, since germanium often exists in the form of complex compounds, direct extraction has great technical difficulties. In the field of metallurgy, oxygen pressure leaching technology is an important hydrometallurgical method. By carrying out leaching reactions under a high oxygen partial pressure environment, the metal recovery efficiency of difficult-to-treat ores can be significantly improved. Compared with traditional leaching methods, oxygen pressure leaching can more effectively dissolve the target metal in germanium-rich zinc concentrate while reducing the interference of impurities.

[0003] Now many germanium recovery systems have been developed. After a lot of searching and reference, we found that the germanium recovery systems in the prior art include the germanium recovery systems disclosed in publication numbers CN117624262A, CN118767810A, CN102031371A, and US4915919A. These germanium recovery systems generally include: a reaction terminal, a separation terminal, and a purification terminal. The reaction terminal is used for oxygen pressure leaching of germanium in germanium-rich zinc concentrate; the separation terminal is used to separate the dissolved germanium from the leaching solution; and the purification terminal is used to purify the separated germanium product. Since the extraction and recovery process of the above-mentioned germanium recovery system is relatively simple, the system lacks optimization of the germanium recovery process, resulting in the defect of reduced germanium recovery efficiency. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies of the above-mentioned germanium recovery system and to provide a system and method for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate.

[0005] The present invention adopts the following technical solution:

[0006] A system for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate, comprising an oxygen pressure control terminal, a temperature control terminal, a reactor terminal, a separation terminal and a germanium extraction terminal; the oxygen pressure control terminal is used to generate and maintain an oxygen pressure environment specified by an experimenter in the reactor terminal; the temperature control terminal is used to control the temperature of the reactor; the reactor terminal is used to realize oxygen pressure leaching reaction of germanium-rich zinc concentrate; the separation terminal is used to separate the leachate and solid residue from the reactor terminal, so that the germanium in the liquid phase enters the germanium extraction terminal; the germanium extraction terminal is used to enrich and purify the germanium in the leachate to realize germanium recovery;

[0007] The oxygen pressure control terminal includes an oxygen generation module, a pressure monitoring module and a leaching rate optimization module; the oxygen generation module is used to produce and transport oxygen; the pressure monitoring module is used to monitor and regulate the oxygen pressure; the leaching rate optimization module is used to generate leaching rate optimization information according to oxygen pressure, reaction temperature, concentrate particle specifications and oxygen solubility; the leaching rate optimization information is used to optimize the parameter combination of the reaction environment so as to improve the leaching efficiency of germanium.

[0008] Optionally, the separation terminal includes a separation module and a separation effect pre-evaluation module; the separation effect pre-evaluation module is used to pre-evaluate the separation effect according to the results after the leaching reaction and generate separation effect pre-evaluation information; the separation effect pre-evaluation information is used to pre-evaluate the separation effect of the separation process so as to improve the efficiency of separation and enrichment; the separation module is used to separate the leachate and solid residue from the reactor terminal according to the separation effect pre-evaluation information, so that the germanium in the liquid phase enters the germanium extraction terminal.

[0009] Optionally, the leaching rate optimization module includes a leaching process data collection submodule, a leaching rate index calculation submodule and a leaching rate optimization information generation submodule; the leaching process data collection submodule is used to collect data on oxygen pressure, reaction temperature, concentrate particle specifications and oxygen solubility during the leaching process; the leaching rate index calculation submodule is used to calculate the leaching rate index based on the data on oxygen pressure, reaction temperature, concentrate particle specifications and oxygen solubility; the leaching rate optimization information generation submodule is used to generate leaching rate optimization information based on the leaching rate index.

[0010] Optionally, the separation effect pre-evaluation module includes a separation effect index calculation submodule and a separation effect pre-evaluation information generation submodule; the separation effect index calculation submodule is used to calculate the separation effect index based on data of the initial germanium concentration, planned separation time, particle density and particle diameter after the leaching reaction is completed; the separation effect pre-evaluation information generation submodule is used to generate separation effect pre-evaluation information based on the separation effect index.

[0011] Optionally, the germanium extraction terminal includes an electrolytic purification module and an electrolytic purification efficiency optimization module; the electrolytic purification module is used to enrich and purify the germanium in the leaching solution to achieve germanium recovery; the electrolytic purification efficiency optimization module is used to generate purification optimization information according to the electrolytic purification process; the purification optimization information is used to optimize the electrolytic purification process to improve the electrolytic purification efficiency.

[0012] A method for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate is applied to a system for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate as described above. The method for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate comprises:

[0013] S1, generating and maintaining an oxygen pressure environment specified by an experimenter in the reactor terminal;

[0014] S2, controlling the temperature of the reactor;

[0015] S3, realizing oxygen pressure leaching reaction of germanium-rich zinc concentrate;

[0016] S4, separating the leaching liquid and the solid residue from the reactor terminal, so that the germanium in the liquid phase enters the germanium extraction terminal;

[0017] S5, enriching and purifying the germanium in the leaching solution to achieve germanium recovery.

[0018] The beneficial effects achieved by the present invention are:

[0019] 1. Through the setting of oxygen pressure control terminal, temperature control terminal, reactor terminal, separation terminal and germanium extraction terminal, the system can realize efficient oxygen pressure leaching of germanium-rich zinc concentrate, which is conducive to accurately controlling oxygen pressure and reaction temperature, and then optimizing leaching reaction conditions, thereby helping to improve the leaching efficiency and recovery rate of germanium, thereby helping to improve the germanium recovery efficiency.

[0020] 2. Through the setting of the separation module and the separation effect pre-evaluation module in the separation terminal, the separation terminal can separate the leachate and the solid residue and pre-evaluate the separation effect, which is beneficial to optimize the separation process according to the conditions after the leaching reaction, thereby improving the enrichment efficiency of germanium in the liquid phase, which is beneficial to the purification efficiency of the germanium extraction terminal.

[0021] 3. Through the setting of the leaching process data collection submodule, the leaching rate index calculation submodule and the leaching rate optimization information generation submodule in the leaching rate optimization module, the system can collect and calculate the key parameters in the leaching process in real time, which is conducive to generating optimized leaching rate information, and then accurately adjusting the oxygen pressure, temperature and other parameters, which is conducive to improving the leaching efficiency.

[0022] 4. Through the setting of the separation effect index calculation submodule and the separation effect pre-evaluation information generation submodule in the separation effect pre-evaluation module, the system can calculate the separation effect index and generate pre-evaluation information based on data such as the initial germanium concentration and particle density, which is conducive to optimizing the separation scheme in advance, thereby improving the solid-liquid separation efficiency, and thus facilitating the further extraction and recovery of germanium in the liquid phase.

[0023] 5. Through the setting of the electrolytic purification module and the electrolytic purification efficiency optimization module in the germanium extraction terminal, the system can monitor and optimize the electrolytic purification process of germanium in real time, which is beneficial to improve the germanium enrichment efficiency of the electrolytic process, thereby reducing energy consumption and purification time, and thus facilitating efficient germanium recovery.

[0024] 6. Through the setting of the leaching rate index calculation submodule, this module calculates the leaching rate index and dynamically adjusts the reaction conditions based on key parameters such as oxygen partial pressure ratio, reaction rate constant, oxygen diffusion path, particle specification factor and oxygen solubility, which is conducive to accurately simulating and optimizing the dynamic changes of the leaching process, thereby achieving a gradual improvement in the leaching efficiency, which is conducive to improving the leaching rate and final recovery efficiency of germanium.

[0025] 7. Through the setting of the separation effect pre-evaluation module, the separation effect index calculation submodule in the module accurately calculates the separation effect index based on key parameters such as the initial concentrated solution concentration after the leaching reaction, the centrifugal efficiency factor, the average particle diameter and the separation time; combined with the separation effect pre-evaluation information generation submodule, it can dynamically generate the optimization evaluation information of the separation process, which is conducive to optimizing the separation parameters in advance, thereby reducing the energy consumption and resource waste in the solid-liquid separation process, which is conducive to improving the concentration efficiency of germanium in the liquid phase and the subsequent extraction effect.

[0026] 8. Through the setting of the electrolytic purification efficiency optimization module, the electrolytic purification efficiency index calculation submodule in this module accurately calculates the electrolytic purification efficiency index based on key parameters such as current intensity, molar mass, electron transfer number, Faraday constant, electrolysis time and solution conductivity; combined with the optimization information generation submodule, it can generate parameter control information for optimizing the electrolytic purification process in real time, which is conducive to dynamically adjusting the electrolytic conditions, thereby improving the purification efficiency of germanium and resource utilization, which is conducive to achieving efficient, stable and economical operation of the electrolytic purification process.

[0027] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the leaching rate optimization module in the present invention;

[0030] Figure 3 This is a schematic diagram of the statistical effect of the leaching rate index calculation results in the present invention;

[0031] Figure 4 It is a structural schematic diagram of the separation effect pre-evaluation module in the present invention;

[0032] Figure 5 This is a schematic diagram of the statistical effect of the separation effect index calculation results in the present invention;

[0033] Figure 6 A schematic diagram of a method for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate in the present invention;

[0034] Figure 7 It is a structural schematic diagram of an electrolytic purification efficiency optimization module in another embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the statistical effect of the electrolytic purification efficiency index calculation results in another embodiment of the present invention. DETAILED DESCRIPTION

[0036] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0037] Embodiment 1: This embodiment provides a system for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate. Figure 1 As shown, a system for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate comprises an oxygen pressure regulating terminal, a temperature control terminal, a reactor terminal, a separation terminal and a germanium extraction terminal; the oxygen pressure regulating terminal is used to generate and maintain an oxygen pressure environment specified by an experimenter in the reactor terminal; the temperature control terminal is used to control the temperature of the reactor; the reactor terminal is used to realize oxygen pressure leaching reaction of germanium-rich zinc concentrate; the separation terminal is used to separate the leachate and solid residue from the reactor terminal, so that the germanium in the liquid phase enters the germanium extraction terminal; the germanium extraction terminal is used to enrich and purify the germanium in the leachate to realize germanium recovery;

[0038] The oxygen pressure control terminal includes an oxygen generation module, a pressure monitoring module and a leaching rate optimization module; the oxygen generation module is used to produce and transport oxygen; the pressure monitoring module is used to monitor and regulate the oxygen pressure; the leaching rate optimization module is used to generate leaching rate optimization information according to oxygen pressure, reaction temperature, concentrate particle specifications and oxygen solubility; the leaching rate optimization information is used to optimize the parameter combination of the reaction environment so as to improve the leaching efficiency of germanium.

[0039] Optionally, the separation terminal includes a separation module and a separation effect pre-evaluation module; the separation effect pre-evaluation module is used to pre-evaluate the separation effect according to the results after the leaching reaction and generate separation effect pre-evaluation information; the separation effect pre-evaluation information is used to pre-evaluate the separation effect of the separation process so as to improve the efficiency of separation and enrichment; the separation module is used to separate the leachate and solid residue from the reactor terminal according to the separation effect pre-evaluation information, so that the germanium in the liquid phase enters the germanium extraction terminal.

[0040] Optional, combined Figure 2 As shown, the leaching rate optimization module includes a leaching process data collection submodule, a leaching rate index calculation submodule and a leaching rate optimization information generation submodule; the leaching process data collection submodule is used to collect data on oxygen pressure, reaction temperature, concentrate particle size and oxygen solubility in the leaching process; the leaching rate index calculation submodule is used to calculate the leaching rate index based on the data on oxygen pressure, reaction temperature, concentrate particle size and oxygen solubility; the leaching rate optimization information generation submodule is used to generate leaching rate optimization information based on the leaching rate index.

[0041] Specifically, when the first leaching process is completed, the leaching rate index calculation submodule calculates the leaching rate index according to the following formula.

[0042]

[0043] Among them, η Ge Indicates the leaching rate index of the current completed leaching process; k represents the reaction rate constant, which is used to characterize the rate at which reactants are converted into products under given conditions. The greater the rate, the greater the constant. The specific value confirmation method can be, but is not limited to: 1. Set by the experimenter based on experience; 2. Confirmed by the experimenter by checking historical data; 3. Confirmed by the experimenter according to the experimental manual; 4. Rapid determination of experiments at different temperatures. O2 represents the oxygen pressure in the reactor; P stdRepresents standard atmospheric pressure; α represents the oxygen pressure sensitivity index, which ranges from 0.5 to 1. The larger the reactor volume, the smaller the oxygen pressure sensitivity index. The specific value is set by the experimenter based on experience; E represents the reaction activation energy, which characterizes the minimum energy that the reactant molecules must obtain in a chemical reaction in order to transform into products through a transition state. The specific value confirmation method can be, but is not limited to: 1. Set by the experimenter based on experience; 2. Confirmed by the experimenter by consulting historical data; 3. Rapid experimental determination at different temperatures. R represents the gas constant, which is generally 8.314; T represents the reaction temperature; δ represents the particle solubility factor, which ranges from 1 to 1.5. The longer the reaction time, the smaller the particle solubility factor. The reaction time refers to the reaction time set by the experimenter for the leaching reaction. The specific value is set by the experimenter based on experience; d p Indicates the average particle diameter of the concentrate before reaction; S O2 It represents the solubility of oxygen, which is determined by performing a solubility experiment on the solution.

[0044] After calculating the leaching rate index of the current completed leaching process, the leaching rate index is compared with the preset leaching rate index threshold, and the leaching rate index threshold is η ref If η Ge ≥η ref , it means that the leaching process has been completed and the effect has reached the standard, and the leaching rate optimization information is generated to indicate that the experimenter is advised to maintain the leaching rate optimization information of the reaction parameters; if η Ge <η ref , it means that the effect of the current completed leaching process does not meet the standard, and the leaching rate optimization information is used to indicate the leaching rate optimization information that recommends the experimenter to adjust the reaction parameters; the adjusted reaction parameters include oxygen pressure, reaction temperature, mineral particle diameter and oxygen solubility.

[0045] The following calculation process is used as an implementation example to illustrate the calculation of the leaching rate index.

[0046] Assume known experimental conditions: reaction temperature T = 400K, oxygen pressure P O2 =200kPa, average particle diameter d p =0.5mm, α=0.8, E=10000 J / mol, k=0.05, particle solubility factor δ=1.2, oxygen solubility S O2 =0.03,η ref =0.0125. Then:

[0047]

[0048] Since η Ge >η ref, the leaching rate optimization information is generated to indicate the leaching rate optimization information that recommends the experimenter to maintain the reaction parameters.

[0049] Combination Figure 3 As shown, Figure 3 The following is the statistical effect diagram of the leaching rate index calculation results for 20 times. The following content is the program code for the above calculation implementation process:

[0050] import math

[0051] #Parameter definition

[0052] k=0.05#reaction rate constant

[0053] P_O2=200# oxygen pressure, unit: kPa

[0054] P_std=101.3#Standard atmospheric pressure, unit: kPa

[0055] alpha=0.8#Pressure sensitivity index

[0056] E_a=10000#reaction activation energy, unit: J / mol

[0057] R = 8.314# gas constant, unit: J / (mol·K)

[0058] T=400# reaction temperature, unit: K

[0059] delta=1.2#Particle solubility factor

[0060] d_p=0.5# particle diameter, unit: mm

[0061] S_O2=0.03#Oxygen solubility

[0062] #Calculate the leaching rate η_Ge

[0063] eta_Ge=k*(P_O2 / P_std)**alpha*math.exp(-E_a / (R*T))*(1+delta / d_p)*S_O2

[0064] # Output results

[0065] print(f"Germanium leaching rate η_Ge:{eta_Ge:.4f}" at invention point one.

[0066] Optional, combined Figure 4As shown, the separation effect pre-evaluation module includes a separation effect index calculation submodule and a separation effect pre-evaluation information generation submodule; the separation effect index calculation submodule is used to calculate the separation effect index according to the data of the initial germanium concentration, planned separation time, particle density and particle diameter after the leaching reaction is completed; the separation effect pre-evaluation information generation submodule is used to generate separation effect pre-evaluation information according to the separation effect index.

[0067] After the leaching reaction is completed, the separation effect index calculation submodule satisfies the following formula when working:

[0068]

[0069] Among them, C Ge It represents the separation effect index of the upcoming separation process; C0 represents the germanium concentration in the solution after the leaching reaction is completed, that is, the initial concentration; β represents the separation efficiency constant, which ranges from 0.01 to 0.05. The more the total amount of solution is after the leaching reaction is completed, the greater the separation efficiency constant is. The specific value is set by the experimenter based on experience; t represents the planned separation time, that is, the planned total duration of the upcoming separation process; ρ s Indicates the particle density of the concentrate before the leaching reaction, measured by a density meter; d p It indicates the average particle diameter of the concentrate before leaching reaction. Ge ≥C ref , it means that the prediction result of the upcoming separation process is that the effect meets the standard, and the separation effect pre-evaluation information generation submodule generates separation effect pre-evaluation information for driving the separation module to continue working; if C Ge <C ref , it indicates that the prediction result of the upcoming separation process is that the effect does not meet the standard, and the separation effect pre-evaluation information generation submodule generates separation effect pre-evaluation information for driving the separation module to stop working and suggesting the experimenter to adjust the separation parameters; C ref It indicates the threshold of separation effect index, which is set by the experimenter based on experience. Adjustment of separation parameters includes planned separation time, particle density and average particle diameter.

[0070] The following calculation process is used as an implementation example to illustrate the calculation of the separation effect index.

[0071] Assume that the experimental conditions are known:

[0072] Initial concentration 2 mg / L, separation effect constant 0.02, planned separation time 60 min, particle density 5.2 g / cm 3 , average particle diameter 0.5,mm,C ref =30. Then:

[0073]

[0074] Since C in the above example Ge >C ref The separation effect pre-evaluation information generating submodule generates separation effect pre-evaluation information for driving the separation module to continue working.

[0075] Combination Figure 5 As shown, Figure 5 The following is the statistical effect diagram of the calculation results of the separation effect index for 20 times. The following content is the program code for the above calculation implementation process:

[0076] #Parameter definition

[0077] C_0=2#initial concentration, unit: mg / L

[0078] beta=0.02#Separation efficiency constant

[0079] t=60# separation time, unit: min

[0080] rho_s=5.2#Particle density, unit: g / cm^3

[0081] d_p=0.5# particle diameter, unit: mm

[0082] #Calculate the enrichment concentration C_Ge

[0083] C_Ge=C_0*(1-math.exp(-beta*t))*(rho_s / d_p**2)

[0084] # Output results

[0085] print(f"The germanium enrichment concentration of invention point two C_Ge:{C_Ge:.4f}mg / L").

[0086] Optionally, the germanium extraction terminal includes an electrolytic purification module and an electrolytic purification efficiency optimization module; the electrolytic purification module is used to enrich and purify the germanium in the leaching solution to achieve germanium recovery; the electrolytic purification efficiency optimization module is used to generate purification optimization information according to the electrolytic purification process; the purification optimization information is used to optimize the electrolytic purification process to improve the electrolytic purification efficiency.

[0087] A method for efficiently recovering germanium from germanium-rich zinc concentrate by oxygen pressure leaching, which is applied to a system for efficiently recovering germanium from germanium-rich zinc concentrate by oxygen pressure leaching as described above, combined with Figure 6 As shown, the method for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate comprises:

[0088] S1, generating and maintaining an oxygen pressure environment specified by an experimenter in the reactor terminal;

[0089] S2, controlling the temperature of the reactor;

[0090] S3, realizing oxygen pressure leaching reaction of germanium-rich zinc concentrate;

[0091] S4, separating the leaching liquid and the solid residue from the reactor terminal, so that the germanium in the liquid phase enters the germanium extraction terminal;

[0092] S5, enriching and purifying the germanium in the leaching solution to achieve germanium recovery.

[0093] Embodiment 2: This embodiment includes all the contents of Embodiment 1, and provides a system for efficiently recovering germanium from germanium-rich zinc concentrate by oxygen pressure leaching. Figure 7 The electrolytic purification efficiency optimization module includes an electrolytic purification efficiency index calculation submodule and a purification optimization information generation submodule; the electrolytic purification efficiency index calculation submodule is used to calculate the electrolytic purification efficiency index based on the data of the electrolytic purification process; the purification optimization information generation submodule is used to generate purification optimization information based on the electrolytic purification efficiency index.

[0094] When the electrolytic purification efficiency index calculation submodule is working, the following formula is satisfied:

[0095]

[0096] Among them, η recovery represents the electrolytic purification efficiency index; I represents the current intensity of the electrolytic process; M Ge represents the molar mass of germanium; n represents the electron transfer constant, which is determined according to the electrolysis reaction equation, and generally n = 2; F represents the Faraday constant, F = 96485C / mol; V represents the volume of the solution; γ represents the electrolysis efficiency constant, which ranges from 0.01 to 0.05. The more the total amount of solution, the greater the electrolysis efficiency constant. The specific value is set by the experimenter based on experience; time represents the electrolysis time; C ion represents the ion concentration gradient in the electrolyte, which is measured by a conductivity meter; κ represents the conductivity of the electrolyte, which is measured by a conductivity meter. The volume of the solution in this solution is preferably liters.

[0097] If η recovery ≤R recovery , indicating that the electrolytic purification efficiency index does not meet the standard, the purification optimization information generation submodule generates purification optimization information for suggesting that the experimenter increase the current or adjust the electrolyte composition; if η recovery >

[0098] R recovery , indicating that the electrolysis purification efficiency index meets the standard, and the purification optimization information generation submodule generates purification optimization information for suggesting that the experimenter continue the electrolysis operation.recovery It represents the electrolytic purification efficiency threshold, which is set by the experimenter based on experience.

[0099] The following calculation process is used as an implementation example to illustrate the calculation of the electrolytic purification efficiency index.

[0100] Assume the experimental conditions are known: current intensity I = 10A, molar mass of germanium M Ge =72.63 g / mol, electron transfer number constant n=2, solution volume V=1 L, electrolysis efficiency constant γ=0.03, electrolysis time time=120 min, C ion The ion concentration gradient in the electrolyte = 0.02, the conductivity of the electrolyte κ = 0.5, R recovery =0.1, then:

[0101]

[0102] Since η recovery <R recovery , the electrolytic purification efficiency index does not meet the standard, and the purification optimization information generation submodule generates purification optimization information for suggesting that the experimenter increase the current or adjust the electrolyte composition.

[0103] Combination Figure 8 As shown, Figure 8 The following is a statistical effect diagram of the calculation results of the electrolytic purification efficiency index for 20 times. The following content is the program code for the above calculation implementation process:

[0104] #Parameter definition

[0105] I=10# current intensity, unit: A

[0106] M_Ge=72.63# Molar mass of germanium, unit: g / mol

[0107] n=2# electron transfer number

[0108] F=96485#Faraday constant, unit: C / mol

[0109] V = Volume of 1# solution, unit: L

[0110] gamma=0.03#Electrolysis efficiency constant

[0111] t=120# electrolysis time, unit: min

[0112] C_ion=0.02#ion concentration gradient

[0113] kappa=0.5# conductivity

[0114] #Calculate the recovery rate η_recovery

[0115] eta_recovery=(I*M_Ge) / (n*F*V)*(1-math.exp(-gamma*t))*(C_ion / kappa)

[0116] # Output results

[0117] print(f"Germanium recovery rate η_recovery of invention point three:{eta_recovery:.4f}").

[0118] The contents disclosed above are only preferred feasible embodiments of the present invention, and do not limit the protection scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the protection scope of the present invention. In addition, the elements therein can be updated as technology develops.

Claims

1. A system for efficiently recovering germanium from germanium-rich zinc concentrate by oxygen pressure leaching, characterized in that: It includes an oxygen pressure control terminal, a temperature control terminal, a reactor terminal, a separation terminal and a germanium extraction terminal; the oxygen pressure control terminal is used to generate and maintain the oxygen pressure environment specified by the experimenter in the reactor terminal; the temperature control terminal is used to control the temperature of the reactor; the reactor terminal is used to realize the oxygen pressure leaching reaction of the germanium-rich zinc concentrate; the separation terminal is used to separate the leachate and solid residue from the reactor terminal, so that the germanium in the liquid phase enters the germanium extraction terminal; the germanium extraction terminal is used to enrich and purify the germanium in the leachate to realize germanium recovery; The oxygen pressure control terminal includes an oxygen generation module, a pressure monitoring module and a leaching rate optimization module; the oxygen generation module is used to produce and transport oxygen; the pressure monitoring module is used to monitor and regulate the oxygen pressure; the leaching rate optimization module is used to generate leaching rate optimization information according to oxygen pressure, reaction temperature, concentrate particle specifications and oxygen solubility; the leaching rate optimization information is used to optimize the parameter combination of the reaction environment so as to improve the leaching efficiency of germanium.

2. A system for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate as claimed in claim 1, characterized in that: The separation terminal includes a separation module and a separation effect pre-evaluation module; the separation effect pre-evaluation module is used to pre-evaluate the separation effect according to the result after the leaching reaction, and generate separation effect pre-evaluation information; the separation effect pre-evaluation information is used to pre-evaluate the separation effect of the separation process, so as to improve the efficiency of separation and enrichment; The separation module is used to separate the leaching liquid and solid residue from the reactor terminal according to the separation effect pre-evaluation information, so that the germanium in the liquid phase enters the germanium extraction terminal.

3. A system for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate as claimed in claim 2, characterized in that: The leaching rate optimization module includes a leaching process data collection submodule, a leaching rate index calculation submodule and a leaching rate optimization information generation submodule; the leaching process data collection submodule is used to collect data on oxygen pressure, reaction temperature, concentrate particle size and oxygen solubility during the leaching process; The leaching rate index calculation submodule is used to calculate the leaching rate index according to the data of oxygen pressure, reaction temperature, concentrate particle size and oxygen solubility; the leaching rate optimization information generation submodule is used to generate leaching rate optimization information according to the leaching rate index.

4. A system for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate as claimed in claim 3, characterized in that: The separation effect pre-evaluation module includes a separation effect index calculation submodule and a separation effect pre-evaluation information generation submodule; the separation effect index calculation submodule is used to calculate the separation effect index according to the data of the initial germanium concentration, the planned separation time, the particle density and the particle diameter after the leaching reaction is completed; the separation effect pre-evaluation information generation submodule is used to generate the separation effect pre-evaluation information according to the separation effect index.

5. A system for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate as claimed in claim 4, characterized in that: The germanium extraction terminal includes an electrolytic purification module and an electrolytic purification efficiency optimization module; the electrolytic purification module is used to enrich and purify the germanium in the leaching solution to achieve germanium recovery; the electrolytic purification efficiency optimization module is used to generate purification optimization information according to the electrolytic purification process; The purification optimization information is used to optimize the electrolytic purification process so as to improve the electrolytic purification efficiency.

6. A method for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate, applied to a system for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate as claimed in claim 4, characterized in that: The method for efficiently recovering germanium by oxygen pressure leaching of germanium-rich zinc concentrate comprises: S1, generating and maintaining an oxygen pressure environment specified by an experimenter in the reactor terminal; S2, controlling the temperature of the reactor; S3, realizing oxygen pressure leaching reaction of germanium-rich zinc concentrate; S4, separating the leaching liquid and the solid residue from the reactor terminal, so that the germanium in the liquid phase enters the germanium extraction terminal; S5, enriching and purifying the germanium in the leaching solution to achieve germanium recovery.

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