Short-process high-valued recovery system for copper leaching pregnant solution

Abstract

The utility model discloses a short-process high-valued recovery system for copper-leaching pregnant solution, which relates to the technical field of wastewater treatment and comprises a copper collecting device, an impurity removing device, a zinc collecting device and a neutralizing device which are sequentially arranged, a first ORP probe is arranged in the copper collecting device and is linked with copper collecting agent adding equipment; a first PH probe is arranged in the impurity removal device and is linked with impurity removal agent adding equipment; a second ORP probe is arranged in the zinc collecting device and is linked with zinc collecting agent adding equipment; and a second PH probe is arranged in the neutralizing device and is linked with neutralizing agent adding equipment. Copper, arsenic, zinc and the like in the copper leaching pregnant solution are effectively recovered step by step by adopting a short-process recovery process and a step-by-step vulcanization method and are respectively converted into sulfides, the obtained product can be directly sold or a single element body can be obtained through pyrogenic process smelting, the production process of an enterprise is shortened, valuable metals are recovered and neutralized by a neutralizing device, and the production cost is reduced. Generated neutralization slag is piled up as solid waste, wastewater can be recycled for production, and secondary pollution is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a short-process high-value recovery system for copper leaching precious liquid. Background Art

[0002] Copper-bearing gold concentrate is the main raw material for gold pyrometallurgical enterprises. Currently, copper-bearing gold concentrate smelting enterprises mainly adopt the "one-stage roasting (flue gas acid production) - roasting sand to collect copper - acid leaching residue cyanide extraction of gold and silver" process. Roasting sand to collect copper is an important part of the process and adopts the "acid leaching - extraction - electrowinning" process. The copper-leaching precious liquid produced after acid leaching contains about 3000-3200 mg / L of copper, and also contains some zinc (about 800-1000 mg / L) and a small amount of arsenic (50-100 mg / L). The "extraction-electrowinning" process currently used for copper-leaching precious liquid has the disadvantages of a long process flow, high cost, and low copper recovery rate. In addition, the raffinate produced by the process has high acidity, large production volume, and contains a certain concentration of copper. For the raffinate, enterprises currently mainly use lime or carbide slag for neutralization treatment, and this treatment cannot recover some of the valuable metals copper and zinc contained in the raffinate. Utility Model Content

[0003] The purpose of the utility model is to provide a short-process high-value recovery system for copper leaching precious liquid, so as to solve the problems existing in the above-mentioned prior art and improve the recovery effect.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] The utility model provides a short-process high-value recovery system for copper leaching precious liquid, comprising a copper collecting device, an impurity removal device, a zinc collecting device and a neutralization device which are arranged in sequence; the copper collecting device comprises a copper collecting reactor; the copper collecting reactor is provided with a copper collecting primary reaction chamber and a copper collecting stabilization reaction chamber which are connected; the copper collecting primary reaction chamber is provided with a copper collecting agent feeding port and a copper leaching precious liquid inlet; the copper collecting agent feeding port is provided with a copper collecting agent feeding device, and the copper collecting agent feeding device is used for feeding the copper collecting agent; the copper collecting stabilization reaction chamber is provided with a first liquid outlet and a first external discharge port, the first liquid outlet is provided at the upper side wall of the copper collecting stabilization reaction chamber, and the first external discharge port is provided at the bottom of the copper collecting stabilization reaction chamber. ; A first ORP probe is provided in the copper collection and stabilization reaction chamber, and the first ORP probe is communicated with the copper collection agent dosing device; the impurity removal device includes an impurity removal reactor; the impurity removal reactor has an impurity removal inlet, an impurity removal agent dosing port, a second liquid outlet, and a second external discharge port, which are connected to the impurity removal reaction chamber and the impurity removal reaction chamber; the impurity removal inlet is communicated with the first liquid outlet; an impurity removal agent dosing device is provided at the impurity removal agent dosing port, and the impurity removal agent dosing device is used to add impurity removal agent; the second liquid outlet is provided at the upper side wall of the impurity removal reaction chamber, and the second external discharge port is provided at the bottom of the impurity removal reaction chamber; a first pH probe is provided in the impurity removal reaction chamber, and the first P The H probe is in communication connection with the impurity remover dosing equipment; the zinc collecting device includes a zinc collecting reactor; the zinc collecting reactor has a connected zinc collecting primary reaction chamber and a zinc collecting stabilization reaction chamber; the zinc collecting primary reaction chamber is provided with a zinc collecting inlet and a zinc collecting agent dosing port; the zinc collecting inlet is in communication with the second liquid outlet; the zinc collecting agent dosing port is provided with a zinc collecting agent dosing device, and the zinc collecting agent dosing device is used to add the zinc collecting agent; the zinc collecting stabilization reaction chamber is provided with a third liquid outlet and a third external discharge port, the third liquid outlet is provided at the upper side wall of the zinc collecting stabilization reaction chamber, and the third external discharge port is provided at the bottom of the zinc collecting stabilization reaction chamber; the zinc collecting stabilization reaction chamber is provided with a second OR P probe, the second ORP probe is communicatively connected to the zinc collecting agent dosing equipment; the neutralization device includes a neutralization reactor; the neutralization reactor has a neutralization reaction chamber and a neutralization inlet, a neutralizer dosing port, a fourth liquid outlet and a fourth external discharge port connected to the neutralization reaction chamber; the neutralization inlet is communicated with the third liquid outlet; a neutralizer dosing device is provided at the neutralizer dosing port, and the neutralizer dosing device is used to add a neutralizer; the fourth liquid outlet is provided at the upper side wall of the neutralization reaction chamber, and the fourth external discharge port is provided at the bottom of the neutralization reaction chamber; a second PH probe is provided in the neutralization reaction chamber, and the second PH probe is communicatively connected to the neutralizer dosing equipment.

[0006] Preferably, the copper collecting device is the same as the zinc collecting device, and the impurity removal device is the same as the neutralization device.

[0007] Preferably, a stirrer is provided in the copper collection primary reaction chamber of the copper collection device, the impurity removal reaction chamber of the impurity removal device, the zinc collection primary reaction chamber of the zinc collection device and the neutralization reaction chamber of the neutralization device.

[0008] Preferably, a partition plate is fixedly arranged between the copper collection primary reaction chamber and the copper collection stabilization reaction chamber of the copper collection device, and a connecting port is formed between the lower end of the partition plate and the bottom of the copper collection reactor; a baffle plate is arranged in the copper collection stabilization reaction chamber corresponding to the connecting port, and there is a distance between the baffle plate and the connecting port; in the vertical direction, the upper end of the baffle plate is higher than the upper end of the connecting port; the upper end part of the baffle plate and part of the inner wall of the copper collection reactor jointly form a connecting channel; the liquid in the copper collection primary reaction chamber flows into the copper collection stabilization reaction chamber through the connecting port and the connecting channel.

[0009] Preferably, the inner bottom of the copper-collecting stabilizing reaction chamber has an inverted conical channel; in the vertical direction, the large mouth of the upper end of the inverted conical channel is lower than the lower end of the copper-collecting primary reaction chamber; and the connection between the large mouth of the upper end of the inverted conical channel and the copper-collecting stabilizing reaction chamber is located on the side of the baffle away from the copper-collecting primary reaction chamber; the small mouth of the lower end of the inverted conical channel forms the first external discharge port.

[0010] Preferably, the first ORP probe is arranged in the communication channel.

[0011] Preferably, the detection value of the first ORP probe is controlled within the range of 100mv to 150mv; the detection value of the first pH probe is controlled within the range of 3.2 to 3.7; the detection value of the second ORP probe is controlled within the range of -150mv to -200mv; and the detection value of the second pH probe is controlled within the range of 7.5 to 8.5.

[0012] Preferably, the copper collecting agent is sodium sulfide, hydrogen sulfide or sodium hydrosulfide; the impurity remover is calcium oxide, calcium hydroxide or sodium hydroxide; the zinc collecting agent is sodium sulfide, hydrogen sulfide or sodium hydrosulfide; and the neutralizer is calcium oxide, calcium hydroxide or carbide slag.

[0013] Preferably, in the vertical direction, the position of the first liquid outlet of the copper collection device is higher than the position of the impurity removal inlet of the impurity removal device; the position of the impurity removal inlet of the impurity removal device is higher than the position of the zinc collection inlet of the zinc collection device; the position of the zinc collection inlet of the zinc collection device is higher than the position of the neutralization inlet of the neutralization device.

[0014] Preferably, the agitator includes a drive motor, a stirring shaft and a stirring blade; the output shaft of the drive motor is fixedly connected to one end of the stirring shaft, and the other end of the stirring shaft is fixedly provided with the stirring blade; the stirring shaft and the stirring blade are used to stir the liquid.

[0015] Compared with the prior art, the utility model has achieved the following technical effects:

[0016] The utility model provides a short-process high-value recovery system for copper leaching precious liquid. By adopting a copper collecting device, the system is linked with a first ORP probe and a copper collecting agent dosing device. After the reaction, copper-containing recovered materials and residual liquid are obtained through solid-liquid separation, thereby realizing the main recovery of copper and arsenic. Iron and the like are recovered through an impurity removal device and pH control. Zinc is mainly recovered through a zinc collecting device and a second ORP probe and a zinc collecting agent dosing device. A short-process recovery process is adopted, and a step-by-step sulfidation method is adopted to effectively recover copper, arsenic, zinc and the like in the copper leaching precious liquid in steps, and convert them into sulfides respectively. The obtained products can be directly sold or obtained as single element bodies through pyrometallurgy, thereby shortening the production process of the enterprise, recovering valuable metals, neutralizing them through a neutralization device, and storing the generated neutralization slag as solid waste. The wastewater can be reused in production without secondary pollution.

[0017] Furthermore, the selection of the same device brings many benefits in terms of equipment versatility, process operation control, and system flexibility and scalability, which helps to improve the operating efficiency of the entire recycling system, reduce costs and adapt to different production needs.

[0018] Furthermore, the provision of an agitator can enhance the material mixing effect, improve the reaction efficiency and the recovery effect.

[0019] Furthermore, a partition plate is provided to fixedly separate the copper collection primary reaction chamber from the copper collection stabilization reaction chamber, so that the copper immersion noble liquid first undergoes a preliminary copper collection reaction in the copper collection primary reaction chamber, and the liquid after the preliminary reaction flows into the copper collection stabilization reaction chamber through the connecting port and the connecting channel for further stabilization reaction. The setting of the connecting port and the connecting channel standardizes the path of the liquid flowing from the copper collection primary reaction chamber to the copper collection stabilization reaction chamber, reducing the interference of the liquid entering the copper collection stabilization reaction chamber on the internal solid-liquid sedimentation effect.

[0020] Furthermore, the structural characteristics of the inverted conical channel make it easier for these precipitates to gather at the bottom under the action of gravity, making it easier to discharge; the large mouth of the inverted conical channel is located on one side of the baffle plate, which can reduce the impact of the liquid entering the copper stabilization reaction chamber on the sedimentation effect.

[0021] Furthermore, the connecting channel is the key path for liquid flow between the copper collection primary reaction chamber and the copper collection stabilization reaction chamber. The liquid transitions from the initial reaction stage to the stable reaction stage here. The first ORP probe is set here, which can accurately monitor the redox potential (ORP) of the solution in this transition stage, thereby more accurately controlling the reaction situation.

[0022] Furthermore, a specific ORP range helps to improve the selectivity of the copper or zinc recovery reaction, relatively reducing unnecessary reactions with other impurity ions in the copper leaching solution, so that the copper recovery process can more accurately recover copper ions or zinc ions; similarly, controlling the pH detection value within the corresponding range is conducive to achieving the corresponding required impurity removal and neutralization purposes by controlling the pH level.

[0023] Furthermore, sodium sulfide, hydrogen sulfide and sodium hydrosulfide can achieve high selectivity for copper ions or zinc ions under different ORP control ranges; calcium oxide, calcium hydroxide and sodium hydroxide are all strong alkaline substances, which can play an important role in impurity removal reactions. After the copper leaching precious solution is treated with copper recovery, some impurities may still exist in the solution, such as metal ions such as iron and arsenic, as well as some acidic impurities. These impurity removers can remove various impurities through different chemical reaction mechanisms; calcium oxide, calcium hydroxide and carbide slag are all alkaline substances, which can effectively neutralize the acidic substances in the solution in the neutralization reaction.

[0024] Furthermore, the natural flow method relying on gravity does not require additional power transmission equipment such as pumps to push the liquid to flow between devices, which greatly reduces energy consumption during system operation, reduces equipment investment costs and operating costs, and improves the economy of the entire recovery system.

[0025] Furthermore, the stirrer is composed of a driving motor, a stirring shaft and stirring blades, which has a simple structure, is easy to assemble and disassemble, and is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the overall structure of the short-process high-value recovery system for copper leaching precious liquid provided by the utility model.

[0028] In the picture:

[0029] 100-Short process high value recovery system for copper leaching precious liquid;

[0030] 10-Copper collection device; 11-Copper collection primary reaction chamber; 12-Copper collection stabilization reaction chamber; 13-Separator; 14-Blocking plate; 15-First ORP probe; 16-Copper collection agent addition port; 17-Copper leaching precious liquid inlet; 18-First liquid outlet; 19-First external discharge port;

[0031] 20-impurity removal device; 21-impurity removal inlet; 22-impurity removal agent addition port; 23-second liquid outlet; 24-second external discharge port; 25-first pH probe;

[0032] 30 - zinc collection device; 31 - zinc collection primary reaction chamber; 32 - zinc collection stabilization reaction chamber; 33 - second ORP probe; 34 - zinc collection agent addition port; 35 - zinc collection inlet; 36 - third liquid outlet; 37 - third external discharge port;

[0033] 40-neutralization device; 41-neutralization inlet; 42-neutralizer addition port; 43-fourth liquid outlet; 44-fourth external discharge port; 45-second pH probe;

[0034] 50-Blender. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The purpose of the utility model is to provide a short-process high-value recovery system for copper leaching precious liquid, so as to solve the problems existing in the prior art and improve the recovery effect.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0038] Example 1

[0039] This embodiment provides a short-process high-value recovery system 100 for copper leaching precious liquid. Figure 1As shown, it includes a copper collecting device 10, an impurity removing device 20, a zinc collecting device 30 and a neutralizing device 40 arranged in sequence; the copper collecting device 10 includes a copper collecting reactor; the copper collecting reactor is provided with a copper collecting primary reaction chamber 11 and a copper collecting stabilization reaction chamber 12 connected to each other; the copper collecting primary reaction chamber 11 is provided with a copper collecting agent feeding port 16 and a copper leaching precious liquid inlet 17; the copper collecting agent feeding port 16 is provided with a copper collecting agent feeding device, and the copper collecting agent feeding device is used to feed the copper collecting agent; the copper collecting stabilization reaction chamber 12 is provided with a first liquid outlet 18 and a first external discharge port 19, the first liquid outlet 18 is provided at the upper side wall of the copper collecting stabilization reaction chamber 12, and the first external discharge port 19 is provided at the bottom of the copper collecting stabilization reaction chamber 12; the copper collecting stabilization reaction chamber 12 is provided with a first liquid outlet 18 and a first external discharge port 19, the first liquid outlet 18 is provided at the upper side wall of the copper collecting stabilization reaction chamber 12, and the first external discharge port 19 is provided at the bottom of the copper collecting stabilization reaction chamber 12; A first ORP probe 15 is provided in the fixed reaction chamber 12, and the first ORP probe 15 is communicated with the copper collecting agent dosing device; the impurity removal device 20 includes an impurity removal reactor; the impurity removal reactor has an impurity removal inlet 21, an impurity removal agent dosing port 22, a second liquid outlet 23 and a second external discharge port 24, which are connected to the impurity removal reaction chamber and the impurity removal reaction chamber; the impurity removal inlet 21 is connected to the first liquid outlet 18; an impurity removal agent dosing device is provided at the impurity removal agent dosing port 22, and the impurity removal agent dosing device is used to add impurity removal agent; the second liquid outlet 23 is provided at the upper side wall of the impurity removal reaction chamber, and the second external discharge port 24 is provided at the bottom of the impurity removal reaction chamber; a first PH probe 25 is provided in the impurity removal reaction chamber, and the first PH probe 25 is communicated with the impurity removal reaction chamber. The miscellaneous agent dosing equipment is communicatively connected; the zinc collecting device 30 includes a zinc collecting reactor; the zinc collecting reactor has a connected zinc collecting primary reaction chamber 31 and a zinc collecting stabilization reaction chamber 32; a zinc collecting inlet 35 and a zinc collecting agent dosing port 34 are provided in the zinc collecting primary reaction chamber 31; the zinc collecting inlet 35 is communicated with the second liquid outlet 23; a zinc collecting agent dosing device is provided at the zinc collecting agent dosing port 34, and the zinc collecting agent dosing device is used to add the zinc collecting agent; a third liquid outlet 36 and a third external discharge port 37 are provided in the zinc collecting stabilization reaction chamber 32, the third liquid outlet 36 is provided at the upper side wall of the zinc collecting stabilization reaction chamber 32, and the third external discharge port 37 is provided at the bottom of the zinc collecting stabilization reaction chamber 32; a third liquid outlet 36 and a third external discharge port 37 are provided in the zinc collecting stabilization reaction chamber 32; a third liquid outlet 36 and a third external discharge port 37 are provided in the zinc collecting stabilization reaction chamber 32 Two ORP probes 33, the second ORP probe 33 is communicated with the zinc collecting agent dosing equipment; the neutralization device 40 includes a neutralization reactor; the neutralization reactor has a neutralization reaction chamber and a neutralization inlet 41, a neutralizer dosing port 42, a fourth liquid outlet 43 and a fourth external discharge port 44 connected to the neutralization reaction chamber; the neutralization inlet 41 is communicated with the third liquid outlet 36; a neutralizer dosing device is provided at the neutralizer dosing port 42, and the neutralizer dosing device is used to add the neutralizer; the fourth liquid outlet 43 is provided at the upper side wall of the neutralization reaction chamber, and the fourth external discharge port 44 is provided at the bottom of the neutralization reaction chamber; a second PH probe 45 is provided in the neutralization reaction chamber, and the second PH probe 45 is communicated with the neutralizer dosing equipment.

[0040] By adopting the copper recovery device 10, which is coordinated with the first ORP probe 15 and the copper recovery agent dosing equipment, after the reaction, the copper-containing recovery material and the remaining liquid are obtained through solid-liquid separation, thereby realizing the main recovery of copper and arsenic, etc.; through the impurity removal device 20 and pH control, iron, etc. are recovered; through the zinc recovery device 30 and the second ORP probe 33 and the zinc recovery agent dosing equipment, the main recovery of zinc is realized; a short-process recovery process is adopted, and the copper, arsenic, zinc, etc. in the copper leaching precious liquid are effectively recovered in steps by a step-by-step sulfidation method, and are converted into sulfides respectively. The obtained products can be directly sold or obtained as single elements through pyrometallurgy, shortening the company's production process (the existing process is extraction-strip extraction-iron washing-electrolytic copper, which is a long process), recovering valuable metals, neutralizing them through the neutralization device 40, and the generated neutralization slag is stored as solid waste, and the wastewater can be reused in production without secondary pollution.

[0041] Specifically, the copper recovery device 10 mainly recovers copper, while also removing a small amount of arsenic, zinc, and iron; the impurity removal device 20 mainly removes iron to ensure that the zinc content in the solid zinc sulfide slag generated by the zinc recovery device 30 is higher; the neutralization device 40 is used to neutralize the acidity of the solution to remove iron ions and meet the standards for discharge or reuse.

[0042] Among them, for the additives and control conditions of each device:

[0043] Among the optional solutions of this embodiment, it is more preferred that the copper collecting agent is sodium sulfide, hydrogen sulfide or sodium hydrosulfide; the impurity remover is calcium oxide, calcium hydroxide or sodium hydroxide; the zinc collecting agent is sodium sulfide, hydrogen sulfide or sodium hydrosulfide; and the neutralizer is calcium oxide, calcium hydroxide or carbide slag. Sodium sulfide, hydrogen sulfide and sodium hydrosulfide can achieve high selectivity for copper ions or zinc ions under different ORP control ranges; calcium oxide, calcium hydroxide and sodium hydroxide are all strongly alkaline substances, which can play an important role in the impurity removal reaction. After the copper leaching precious solution is treated with copper collection, some impurities may still exist in the solution, such as metal ions such as iron and arsenic, as well as some acidic impurities. These impurity removers can remove various impurities through different chemical reaction mechanisms; calcium oxide, calcium hydroxide and carbide slag are all alkaline substances, which can effectively neutralize the acidic substances in the solution during the neutralization reaction.

[0044] Specifically, when the additive is gas, the corresponding dosing device is a ventilation device that passes the gas into the corresponding device.

[0045] Among the optional solutions of this embodiment, it is preferred that the detection value of the first ORP probe 15 be controlled between 100mv and 150mv; the detection value of the first pH probe 25 be controlled between 3.2 and 3.7; the detection value of the second ORP probe 33 be controlled between -150mv and -200mv; and the detection value of the second pH probe 45 be controlled between 7.5 and 8.5. A specific ORP range helps improve the selectivity of the copper or zinc recovery reaction, relatively reducing unnecessary reactions with other impurity ions in the copper leaching solution, allowing the copper recovery process to more accurately recover copper or zinc ions. Similarly, controlling the pH detection value within a corresponding range facilitates achieving the desired impurity removal and neutralization goals by controlling the pH level.

[0046] Among them, other related settings instructions for each device:

[0047] Among the optional solutions of this embodiment, it is more preferred that Figure 1 As shown, the copper recovery unit 10 is identical to the zinc recovery unit 30, and the impurity removal unit 20 is identical to the neutralization unit 40. The use of identical units offers numerous advantages in terms of equipment versatility, process control, system flexibility, and scalability, helping to improve the overall recovery system's operating efficiency, reduce costs, and adapt to diverse production needs.

[0048] Among the optional solutions of this embodiment, it is more preferred that Figure 1 As shown, a stirrer 50 is provided in the copper collection primary reaction chamber 11 of the copper collection device 10, the impurity removal reaction chamber of the impurity removal device 20, the zinc collection primary reaction chamber 31 of the zinc collection device 30, and the neutralization reaction chamber of the neutralization device 40. The provision of the stirrer 50 can enhance the material mixing effect, improve the reaction efficiency and the recovery effect.

[0049] Among the optional solutions of this embodiment, it is more preferred that Figure 1 As shown, vertically, first liquid outlet 18 of copper collection device 10 is positioned higher than impurity removal inlet 21 of impurity removal device 20; impurity removal inlet 21 of impurity removal device 20 is positioned higher than zinc collection inlet 35 of zinc collection device 30; and zinc collection inlet 35 of zinc collection device 30 is positioned higher than neutralization inlet 41 of neutralization device 40. This natural flow of liquid, relying on gravity, eliminates the need for additional power transmission equipment such as pumps to propel liquid between devices, significantly reducing energy consumption during system operation, lowering equipment investment and operating costs, and improving the economic efficiency of the entire recovery system.

[0050] Here, the specific structure of the copper collecting device 10 is described as follows:

[0051] Among the optional solutions of this embodiment, it is more preferred that Figure 1As shown, a partition plate 13 is fixedly arranged between the copper collection primary reaction chamber 11 and the copper collection stabilization reaction chamber 12 of the copper collection device 10, and a connecting port is formed between the lower end of the partition plate 13 and the bottom of the copper collection reactor; a blocking plate 14 is arranged at the corresponding connecting port in the copper collection stabilization reaction chamber 12, and there is a distance between the blocking plate 14 and the connecting port; in the vertical direction, the upper end of the blocking plate 14 is higher than the upper end of the connecting port; the upper end part of the blocking plate 14 and part of the partition plate 13 and part of the inner wall of the copper collection reactor together form a connecting channel; the liquid in the copper collection primary reaction chamber 11 passes through the connecting port and the connecting channel and flows into the copper collection stabilization reaction chamber 12. A partition plate 13 is provided to fixedly separate the copper collection primary reaction chamber 11 from the copper collection stabilization reaction chamber 12, so that the copper leaching noble liquid first undergoes a preliminary copper collection reaction in the copper collection primary reaction chamber 11, and the liquid after the preliminary reaction flows into the copper collection stabilization reaction chamber 12 through the connecting port and the connecting channel for further stabilization reaction. The setting of the connecting port and the connecting channel standardizes the path of the liquid flowing from the copper collection primary reaction chamber 11 to the copper collection stabilization reaction chamber 12, reducing the interference of the liquid entering the copper collection stabilization reaction chamber 12 on the internal solid-liquid sedimentation effect.

[0052] Among the optional solutions of this embodiment, it is more preferred that Figure 1 As shown, the inner bottom of the copper-collecting and stabilizing reaction chamber 12 has an inverted conical channel; in the vertical direction, the large end of the upper end of the inverted conical channel is lower than the lower end of the copper-collecting primary reaction chamber 11; and the connection between the large end of the upper end of the inverted conical channel and the copper-collecting and stabilizing reaction chamber 12 is located on the side of the baffle plate 14 away from the copper-collecting primary reaction chamber 11; the small end of the lower end of the inverted conical channel forms a first external discharge port 19. The structural characteristics of the inverted conical channel make it easier for these sediments to gather at the bottom under the action of gravity, facilitating discharge; the large end of the inverted conical channel is located on the side of the baffle plate 14, which can reduce the impact of liquid entering the copper-collecting and stabilizing reaction chamber 12 on the sedimentation effect.

[0053] Among the optional solutions of this embodiment, it is more preferred that Figure 1 As shown, the first ORP probe 15 is disposed in the communication channel. The communication channel is a key path for liquid flow between the copper-collecting primary reaction chamber 11 and the copper-collecting stabilization reaction chamber 12. The liquid transitions from the initial reaction stage to the stabilization reaction stage here. The first ORP probe is disposed here to accurately monitor the oxidation-reduction potential (ORP) of the solution during this transitional stage, thereby more accurately controlling the reaction.

[0054] Among the optional solutions of this embodiment, it is more preferred that Figure 1As shown, agitator 50 includes a drive motor, a stirring shaft, and stirring blades. The output shaft of the drive motor is fixedly connected to one end of the stirring shaft, and the stirring blades are fixedly mounted on the other end of the stirring shaft. The stirring shaft and stirring blades are used to stir the liquid. The agitator 50, which is composed of the drive motor, stirring shaft, and stirring blades, has a simple structure, is easy to assemble and disassemble, and is simple to maintain.

[0055] Example 2

[0056] Taking a gold smelting enterprise's copper leaching precious liquid as an example, the raw water contains 3340 mg / L copper, 24.86 mg / L arsenic, 871.15 mg / L zinc, and 1900 mg / L iron. The copper leaching precious liquid short-process high-value recovery system 100 used in Example 1 is used for processing, and the specific results are as follows:

[0057] In the copper recovery device 10, sodium hydrosulfide is used as a copper recovery agent, the copper recovery reaction ORP is controlled at 125mv, and the reaction time is 30min. After treatment, the effluent copper is undetectable, arsenic is 9.58mg / L, zinc is 856.59mg / L, and iron is 1830mg / L. The generated copper sulfide slag contains 50.83% copper, 0.01% arsenic, and 0.015% zinc, meeting the first-class requirements of "Copper Concentrate" (YS-T318-2007);

[0058] Sodium hydroxide was used as the impurity removal agent in the impurity removal device 20, and the pH of the impurity removal reaction was controlled to be 3.6. The reaction time was 40 minutes. The copper content in the reaction water was undetectable, arsenic was 1.5 mg / L, zinc was 844.8 mg / L, and iron was 510 mg / L.

[0059] In the zinc collection device 30, sodium hydrosulfide was used as the zinc collection agent. The zinc collection reaction ORP was controlled at -165 mV, and the reaction time was 30 minutes. The effluent contained no copper or arsenic, 1.92 mg / L zinc, and 450 mg / L iron. The generated zinc sulfide slag contained 47.42% zinc and 0.18% arsenic, meeting the fourth-grade product requirements of "Zinc Concentrate" (YS / T 320-2014).

[0060] Calcium hydroxide was used as a neutralizing agent in the neutralization device 40 to control the reaction pH to 8.2. After the reaction, the effluent contained no copper or arsenic, 0.21 mg / L zinc, and 3.2 mg / L iron.

[0061] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A short-process high-value recovery system for copper leaching precious liquid, characterized by: It includes a copper collecting device, an impurity removal device, a zinc collecting device and a neutralization device which are arranged in sequence; The copper collection device includes a copper collection reactor; the copper collection reactor is provided with a copper collection primary reaction chamber and a copper collection stabilization reaction chamber that are connected; the copper collection primary reaction chamber is provided with a copper collection agent addition port and a copper leaching precious liquid inlet port; the copper collection agent addition port is provided with a copper collection agent addition device, and the copper collection agent addition device is used to add the copper collection agent; the copper collection stabilization reaction chamber is provided with a first liquid outlet and a first external discharge port, the first liquid outlet is provided at the upper side wall of the copper collection stabilization reaction chamber, and the first external discharge port is provided at the bottom of the copper collection stabilization reaction chamber; the copper collection stabilization reaction chamber is provided with a first ORP probe, and the first ORP probe is communicatively connected to the copper collection agent addition device; The impurity removal device includes an impurity removal reactor; the impurity removal reactor has an impurity removal inlet, an impurity removal agent addition port, a second liquid outlet, and a second external discharge port, which are connected to an impurity removal reaction chamber; the impurity removal inlet is connected to the first liquid outlet; an impurity removal agent addition device is provided at the impurity removal agent addition port, and the impurity removal agent addition device is used to add impurity removal agent; the second liquid outlet is provided at the upper side wall of the impurity removal reaction chamber, and the second external discharge port is provided at the bottom of the impurity removal reaction chamber; a first pH probe is provided in the impurity removal reaction chamber, and the first pH probe is in communication with the impurity removal agent addition device; The zinc collection device includes a zinc collection reactor; the zinc collection reactor has a connected zinc collection primary reaction chamber and a zinc collection stabilization reaction chamber; the zinc collection primary reaction chamber is provided with a zinc collection inlet and a zinc collection agent addition port; the zinc collection inlet is connected to the second liquid outlet; a zinc collection agent addition device is provided at the zinc collection agent addition port, and the zinc collection agent addition device is used to add the zinc collection agent; a third liquid outlet and a third external discharge port are provided in the zinc collection stabilization reaction chamber, the third liquid outlet is provided at the upper side wall of the zinc collection stabilization reaction chamber, and the third external discharge port is provided at the bottom of the zinc collection stabilization reaction chamber; a second ORP probe is provided in the zinc collection stabilization reaction chamber, and the second ORP probe is communicatively connected to the zinc collection agent addition device; The neutralization device includes a neutralization reactor; the neutralization reactor has a neutralization inlet, a neutralizer addition port, a fourth liquid outlet and a fourth external discharge port, which are connected to a neutralization reaction chamber; the neutralization inlet is connected to the third liquid outlet; a neutralizer addition device is provided at the neutralizer addition port, and the neutralizer addition device is used to add a neutralizer; the fourth liquid outlet is provided at the upper side wall of the neutralization reaction chamber, and the fourth external discharge port is provided at the bottom of the neutralization reaction chamber; a second pH probe is provided in the neutralization reaction chamber, and the second pH probe is communicated with the neutralizer addition device.

2. The short-process high-value recovery system for copper leaching precious solution according to claim 1 is characterized in that: The copper collecting device is the same as the zinc collecting device, and the impurity removal device is the same as the neutralization device.

3. The short-process high-value recovery system for copper leaching precious solution according to claim 2 is characterized in that: Agitators are provided in the copper collection primary reaction chamber of the copper collection device, the impurity removal reaction chamber of the impurity removal device, the zinc collection primary reaction chamber of the zinc collection device and the neutralization reaction chamber of the neutralization device.

4. The short-process high-value recovery system for copper leaching precious solution according to claim 2 is characterized in that: A partition plate is fixedly provided between the copper collecting primary reaction chamber and the copper collecting stabilization reaction chamber of the copper collecting device, and a communication port is formed between the lower end of the partition plate and the bottom of the copper collecting reactor; A baffle is provided in the copper-collecting and stabilizing reaction chamber at a position corresponding to the communicating port, with a distance between the baffle and the communicating port. In the vertical direction, the upper end of the baffle is higher than the upper end of the communicating port. The upper end of the baffle, part of the partition plate, and part of the inner wall of the copper-collecting reactor together form a communicating channel. The liquid in the copper-collecting primary reaction chamber flows into the copper-collecting stabilizing reaction chamber through the communicating port and the communicating channel.

5. The short-process high-value recovery system for copper leaching precious solution according to claim 4 is characterized in that: The inner bottom of the copper collecting and stabilizing reaction chamber has an inverted tapered channel; In the vertical direction, the large mouth of the upper end of the inverted conical channel is lower than the lower end of the copper collection primary reaction chamber; and the connection between the large mouth of the upper end of the inverted conical channel and the copper collection stabilization reaction chamber is located on the side of the baffle away from the copper collection primary reaction chamber; the small mouth of the lower end of the inverted conical channel forms the first external discharge port.

6. The short-process high-value recovery system for copper leaching precious solution according to claim 5 is characterized in that: The first ORP probe is disposed in the communication channel.

7. The short-process high-value recovery system for copper leaching precious solution according to claim 1 is characterized in that: The detection value of the first ORP probe is controlled at 100mv to 150mv; The detection value of the first pH probe is controlled at 3.2 to 3.7; The detection value of the second ORP probe is controlled at -150mv to -200mv; The detection value of the second pH probe is controlled at 7.5-8.

5.

8. The short-process high-value recovery system for copper leaching precious solution according to claim 1 is characterized in that: The copper collecting agent is sodium sulfide, hydrogen sulfide or sodium hydrosulfide; The impurity remover is calcium oxide, calcium hydroxide or sodium hydroxide; The zinc collecting agent is sodium sulfide, hydrogen sulfide or sodium hydrosulfide; The neutralizing agent is calcium oxide, calcium hydroxide or carbide slag.

9. The short-process high-value recovery system for copper leaching precious solution according to claim 1 is characterized in that: In the vertical direction, the position of the first liquid outlet of the copper collecting device is higher than the position of the impurity removal inlet of the impurity removal device; The position of the impurity removal inlet of the impurity removal device is higher than the position of the zinc collection inlet of the zinc collection device; The zinc collection inlet of the zinc collection device is located higher than the neutralization inlet of the neutralization device.

10. The short-process high-value recovery system for copper leaching precious solution according to claim 3, characterized in that: The stirrer includes a driving motor, a stirring shaft and a stirring blade; The output shaft of the driving motor is fixedly connected to one end of the stirring shaft, and the other end of the stirring shaft is fixedly provided with the stirring blade; the stirring shaft and the stirring blade are used to stir the liquid.

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