A device for electrochemical extraction of gold from fluidized ore pulp of gold-containing material
Patent Information
- Application Number
- CN202621353984.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-08-31
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2036-08-31
AI Technical Summary
Existing electrochemical gold extraction devices require stirring, but the poor fluidity of the slurry leads to uneven material suspension, affecting current efficiency, increasing electrolysis costs, and making industrial application difficult.
Design a fluidized bed slurry electrochemical gold extraction device for gold-bearing materials, including a slurry conditioning tank, a fluidized bed gold extraction device, a resin adsorption tank, a neutralization tank, a filter press, and a tailings tank. The slurry is circulated by a slurry pump, and a flow divider and electrode assembly are set to achieve uniform suspension of the slurry and a stable and efficient electrolysis process.
It achieves uniform suspension of slurry, reduces auxiliary processes, allows reagent consumption and regeneration to proceed simultaneously, improves gold leaching efficiency, reduces electrolysis costs, and is easy to apply industrially.
Smart Images
Figure CN224930612U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrolytic gold extraction technology, specifically to a fluidized slurry electrochemical gold extraction device for gold-bearing materials. Background Technology
[0002] Gold, as a precious metal, is chemically very stable and possesses unique physical properties, playing a vital role in various fields. Currently, the leaching of gold from ores is mostly done using the cyanide method. However, sodium cyanide is highly toxic, and the leaching process causes serious environmental pollution.
[0003] Current electrochemical gold extraction equipment requires stirring. Due to the large number of electrolytic electrode plates in the tank, the slurry has poor fluidity, resulting in uneven material suspension, which affects current efficiency, increases electrolysis costs, and makes it difficult to industrialize the process.
[0004] In view of this, it is necessary to design a fluidized bed slurry electrochemical gold extraction device to solve the above problems. Utility Model Content
[0005] In view of the technical problems existing in the background art, this application provides a fluidized bed slurry electrochemical gold extraction device for gold-bearing materials. This device can ensure uniform suspension of materials during slurry electrolysis, reduce auxiliary processes, and make the electrolysis process more stable and efficient. It also enables simultaneous consumption and regeneration of reagents, improving the gold leaching effect from the materials.
[0006] To achieve the above objectives, this application provides a fluidized bed slurry electrochemical gold extraction device for gold-bearing materials, comprising a slurry conditioning tank, a fluidized bed gold extraction device, a resin adsorption tank, a neutralization tank, a filter press, and a tailings tank connected in sequence. The fluidized bed gold extraction device includes at least one fluidized bed gold extraction unit and a slurry pump connected to the fluidized bed gold extraction unit. The slurry pump is used to circulate the slurry in the fluidized bed gold extraction unit. The fluidized bed gold extraction unit includes a tank and an electrode assembly disposed within the tank, and at least one flow divider is disposed within the tank.
[0007] As a further improvement of this utility model, the upper part of the tank is a cylindrical body, and the lower part is an inverted conical body; the electrode assembly is located inside the cylindrical body; and the diverter plate is located inside the inverted conical body.
[0008] As a further improvement of this utility model, the diverter plate is a conical cylinder, and the outer wall of the diverter plate is connected to the inner wall of the lower part of the tank through a connecting column.
[0009] As a further improvement of this utility model, the fluidized bed gold extraction device includes a first fluidized bed gold extraction unit and a second fluidized bed gold extraction unit. The upper parts of the first fluidized bed gold extraction unit and the second fluidized bed gold extraction unit are connected by a connecting pipe, and the lower parts are connected by a slurry pump. The connecting pipe is equipped with a detachable valve; the slurry pump is connected to the first fluidized gold extraction unit and the second fluidized gold extraction unit through the first pipe and the second pipe respectively, the second pipe is connected to the third pipe, and the end of the third pipe is equipped with a three-way valve.
[0010] As a further improvement of this utility model, the electrode assembly includes: a cathode plate, an anode plate, and a diaphragm filter bag sleeved outside the cathode plate; the cathode plate is electrically connected to the negative terminal of the DC electrolysis power supply, and the anode plate is electrically connected to the positive terminal of the DC electrolysis power supply.
[0011] As a further improvement of this utility model, the number of cathode plates is at least two, and the cathode plates are connected in parallel; the number of anode plates is the same as that of cathode plates, and the anode plates are connected in parallel; the cathode plates and anode plates are arranged alternately.
[0012] As a further improvement of this utility model, the pore size of the diaphragm filter bag is 5 micrometers.
[0013] As a further improvement of this utility model, a tank frame is provided at the lower part of the tank.
[0014] As a further improvement of this utility model, the slurry preparation tank is connected to the inlet of the fluidized gold extraction device via a feed pump.
[0015] As a further improvement of this utility model, the tail liquid tank is connected to the slurry conditioning tank through a peristaltic pump.
[0016] The beneficial technical effects of this application are as follows: This application provides a fluidized bed slurry electrochemical gold extraction device for gold-bearing materials. The device consists of a slurry preparation tank and a fluidized bed gold extraction unit connected in sequence. Pre-treated slurry from the preparation tank is introduced into the fluidized bed gold extraction unit. A slurry pump circulates the slurry within the unit. Electrode components within the tank are powered to perform slurry electrolysis, regenerating the leaching reagent and leaching gold from the material. Simultaneously, the device includes a fluidized bed gold extraction unit, a resin adsorption tank, a neutralization tank, a filter press, and a tailings tank connected in sequence. The slurry after electrolysis and leaching in the fluidized bed gold extraction unit overflows into the resin adsorption tank for gold adsorption and recovery. The adsorbed slurry overflows into the neutralization tank for neutralization and finally enters the filter press for solid-liquid separation. The tailings in the tailings tank can be returned to the preparation tank for recycling. This device, through its simple and rational structural design, achieves uniform material suspension without stirring, making the electrolysis process more stable and efficient, and reducing auxiliary processes. This method enables simultaneous consumption and regeneration of the reagent, improving the gold leaching effect from the material. It is easy to operate and implement in industrial production, and offers good electrolysis and reagent regeneration results, improving current efficiency, shortening the process flow, and increasing work efficiency.
[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of this application, the accompanying drawings used in this application will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without any creative effort.
[0019] Figure 1 A schematic diagram of the complete structure of the gold extraction device for fluidized slurry electrolysis and electrochemical extraction of gold-bearing materials provided in this application; Figure 2 A schematic diagram of the fluidized gold extraction apparatus provided in this application; Figure 3 This is a schematic diagram of the electrode assembly structure provided in this application; Explanation of reference numerals in the attached drawings: 1. Slurry preparation tank; 21. Fluidized bed gold extraction unit; 211. Tank body; 212. Electrode assembly; 2121. Cathode plate; 2122. Anode plate; 2123. Diaphragm filter bag; 213. Diverter plate; 214. Tank frame; 215. DC electrolysis power supply; 22. Slurry pump; 23. Connecting pipe; 24. Detachable valve; 25. Three-way valve; 26. Feed inlet; 3. Resin adsorption tank; 4. Neutralization tank; 5. Filter press; 6. Tail liquid tank; 7. Peristaltic pump; 8. Feed pump. Detailed Implementation
[0020] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.
[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.
[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0023] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.
[0024] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.
[0025] Unless otherwise specified, the terms "comprising" and "including" as used in this application are open-ended. For example, "comprising" and "including" may mean that other components not listed may also be included or contained.
[0026] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more (including two), unless otherwise explicitly defined.
[0027] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.
[0028] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.
[0029] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.
[0030] Current electrochemical gold extraction devices all require stirring. Due to the large number of electrolytic electrode plates in the tank, the slurry has poor fluidity, resulting in uneven material suspension, which affects current efficiency and increases electrolysis costs. Therefore, it is necessary to design a fluidized slurry electrochemical gold extraction device for gold-containing materials to solve the above problems.
[0031] This application provides a fluidized bed slurry electrochemical gold extraction device for gold-bearing materials, the structural schematic diagram of which is shown below. Figure 1 As shown, it includes a slurry preparation tank 1, a fluidized bed gold extraction device, a resin adsorption tank 3, a neutralization tank 4, a filter press 5, and a tailings tank 6 connected in sequence. Among them, such as Figure 2As shown, the fluidized bed gold extraction device includes at least one fluidized bed gold extraction unit 21 and a slurry pump 22 connected to the fluidized bed gold extraction unit 21. The slurry pump 22 is used to circulate the slurry in the fluidized bed gold extraction unit 21. The fluidized gold extraction unit 21 includes a tank 211 and an electrode assembly 212 disposed in the tank 211. At least one flow divider 213 is disposed in the tank 211.
[0032] In this embodiment, by setting up a slurry preparation tank 1, the gold-containing material, solvent, and reaction agent are mixed and then enter the fluidized bed gold extraction device to achieve gold leaching. At the same time, this device can also regenerate the agent, improve the gold leaching efficiency, and realize the circulation of the slurry in the fluidized bed gold extraction unit 21, so that the slurry can be uniformly mixed, which is conducive to gold leaching. Subsequently, the leached gold is adsorbed by the resin adsorption tank 3, and the slurry is neutralized in the neutralization tank 4 to remove impurity ions such as iron ions and arsenic ions. The neutralized slurry enters the filter press 5 to achieve solid-liquid separation. The tailings enter the tailings pond, and the tailings liquid is returned to the slurry preparation tank 1 for recycling in the tailings liquid tank 6 via the peristaltic pump 7.
[0033] As a further improvement of this utility model, the upper part of the tank 211 is a cylindrical body, and the lower part is an inverted conical body; the electrode assembly 212 is located in the cylindrical body; and the flow divider 213 is located in the inverted conical body.
[0034] In this embodiment, the upper part of the tank 211 is set as a cylindrical body, so that the electrode assembly 212 can be better placed in the upper part of the tank 211 to realize the electrolysis of the slurry. The lower part is set as an inverted conical cylinder, so that the diverter plate 213 can play its role in the inverted conical cylinder. While the slurry is continuously circulating, the slurry is sprayed out from below the fluidized gold extraction unit 21. After the diversion effect of the diverter plate 213, the slurry can be mixed evenly while circulating without stirring.
[0035] As a further improvement of this utility model, the diverter plate 213 is a conical cylinder, and the outer wall of the diverter plate 213 is connected to the inner wall of the lower part of the tank 211 by a connecting column.
[0036] In this embodiment, the diverter plate 213 is designed as a conical cylinder, allowing it to be better placed inside the inverted conical cylinder. The conical shape also improves the mixing of the slurry, facilitating gold leaching and the regeneration of reagents during electrolysis. The diverter plate 213 is connected to the inner wall of the lower part of the tank 211 via connecting columns, ensuring more uniform mixing of the slurry during circulation.
[0037] It is worth mentioning that when multiple diverter plates 213 are set, each diverter plate 213 is in the shape of a conical cylinder, but the size decreases step by step. The multi-stage diverter plates 213 are set in a way that they are nested from the outside to the inside. Adjacent diverter plates 213 are connected by connecting columns, and channels that allow slurry to pass through are formed between adjacent diverter plates 213, so that the slurry is diverted to multiple channels when circulating, resulting in better mixing effect.
[0038] As a further improvement of this utility model, the fluidized bed gold extraction device includes a first fluidized bed gold extraction unit and a second fluidized bed gold extraction unit. The upper parts of the first fluidized bed gold extraction unit and the second fluidized bed gold extraction unit are connected by a connecting pipe 23, and the lower parts are connected by a slurry pump 22. The connecting pipe 23 is connected to a detachable valve 24; the slurry pump 22 is connected to the first fluidized gold extraction unit and the second fluidized gold extraction unit through the first pipe and the second pipe respectively, the second pipe is connected to the third pipe, and a three-way valve 25 is provided at the end of the third pipe.
[0039] In this embodiment, the fluidized bed gold extraction units 21 are connected at the top by a connecting pipe 23 and at the bottom by a slurry pump 22, creating a circulation path between the units. This allows the slurry to continuously circulate between the units, improving the gold leaching rate and gold extraction efficiency. The connecting pipe 23 is equipped with a detachable valve 24 for easy assembly and cleaning after the reaction. The slurry pump 22 connects to the first and second fluidized bed gold extraction units via a first pipe and a second pipe, respectively, allowing the slurry to be ejected from the bottom of each unit for circulation. The second pipe connects to a third pipe, and the end of the third pipe is equipped with a three-way valve 25. This valve allows any remaining slurry to be discharged directly after gold extraction, facilitating subsequent cleaning and equipment maintenance.
[0040] It is worth mentioning that multiple fluidized gold extraction units 21 can be connected. Connecting multiple units can increase the processing scale of the device, and the slurry can also be continuously circulated between multiple fluidized gold extraction units 21.
[0041] As a further improvement to this utility model, such as Figure 3 As shown, the electrode assembly 212 includes: a cathode plate 2121, an anode plate 2122, and a diaphragm filter bag 2123 sleeved on the outside of the cathode plate 2121; the cathode plate 2121 is electrically connected to the negative terminal of the DC electrolysis power supply 215, and the anode plate 2122 is electrically connected to the positive terminal of the DC electrolysis power supply 215.
[0042] In this embodiment, the electrode assembly 212, in addition to including a cathode plate 2121 and an anode plate 2122, also includes a diaphragm filter bag 2123 fitted over the cathode plate 2121. Both are detachable, facilitating the installation and setup of the electrolysis device. The diaphragm filter bag 2123, fitted over the cathode plate 2121, allows gold to be reduced and concentrated within the filter bag 2123, achieving gold enrichment and separation. The cathode plate 2121 is electrically connected to the negative terminal of the DC electrolysis power supply 215, and the anode plate 2122 is electrically connected to the positive terminal of the DC electrolysis power supply 215, realizing the electrolysis of the slurry.
[0043] As a further improvement of this utility model, the number of cathode plates 2121 is at least two, and each cathode plate 2121 is connected in parallel; the number of anode plates 2122 is the same as that of cathode plates 2121, and each anode plate 2122 is connected in parallel; the cathode plates 2121 and anode plates 2122 are arranged alternately.
[0044] In this embodiment, multiple cathode plates 2121 and anode plates 2122 are provided to improve the speed and efficiency of electrolysis, enable rapid regeneration of the reagents, and thus accelerate the gold leaching efficiency. The alternating arrangement of cathode plates 2121 and anode plates 2122 can achieve charge balance as much as possible during electrolysis, maintaining the stability of the slurry system.
[0045] As a further improvement of this utility model, the pore size of the diaphragm filter bag 2123 is 5 micrometers.
[0046] In this embodiment, the pore size of the diaphragm filter bag 2123 is set to 5 micrometers, so that gold can be enriched inside the diaphragm filter bag 2123 and will not escape from the diaphragm filter bag 2123. At the same time, the electrolyte solution in the slurry can freely enter and exit, and electrolysis can be carried out continuously.
[0047] As a further improvement of this utility model, a tank frame 214 is provided at the lower part of the tank body 211.
[0048] In this embodiment, a tank frame 214 is provided at the lower part of the tank 211. The tank frame 214 serves to support the tank 211 and improve the stability of the tank 211.
[0049] As a further improvement of this utility model, the slurry tank 1 is connected to the inlet 26 of the fluidized gold extraction device via the feed pump 8.
[0050] In this embodiment, the slurry is mixed in the mixing tank 1 and then transported by the feed pump 8 and enters the fluidized gold extraction device through the feed port 26.
[0051] As a further improvement of this utility model, the tail liquid tank 6 is connected to the slurry tank 1 via a peristaltic pump 7.
[0052] In this embodiment, the tail liquid in the tail liquid tank 6 is connected to the slurry preparation tank 1 through the peristaltic pump 7, so that the tail liquid in the tail liquid tank 6 can be returned to the slurry preparation tank 1 after being processed, to continue to dissolve gold-containing materials to form mineral slurry, and continue to be used, thus achieving the purpose of recycling.
[0053] This utility model provides a fluidized bed slurry electrochemical gold extraction device for gold-bearing materials. In operation, the pre-treated slurry is first pumped from the slurry preparation tank 1 to the fluidized bed gold extraction unit 211 via a feed pump 8. The slurry in the tank 211 is circulated multiple times by a slurry pump 22. The electrode assembly 212 is connected to a DC electrolysis power supply 215. Upon power-up, the electrolyte solution in the slurry is electrolyzed to regenerate the reagents and leach gold from the material. The leachated slurry overflows from the tank 211 and enters the resin adsorption tank 3, where gold is adsorbed onto the resin. The adsorbed slurry then enters the neutralization tank 4, where lime slurry is added for neutralization, removing impurity ions. The neutralized slurry then enters the filter press 5 for solid-liquid separation. The tailings enter the tailings pond, and the tailings liquid enters the tailings tank 6 and is returned to the slurry preparation tank 1 via a peristaltic pump 7 for recycling. Ultimately, gold leaching and recovery are achieved without the need for stirring. The consumption and regeneration of the reagents are carried out simultaneously in the tank 211. While ensuring uniform material suspension, auxiliary processes are reduced, the leaching efficiency of gold during the leaching process is improved, the electrolysis process is made more stable and efficient, and the gold leaching process is made more convenient.
[0054] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing embodiments by combining some of the constituent elements, are also included in the scope of this application without departing from the spirit of this application.
[0055] Furthermore, although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A fluidized bed slurry electrochemical gold extraction device, characterized in that, It includes a slurry preparation tank, a fluidized bed gold extraction device, a resin adsorption tank, a neutralization tank, a filter press, and a tailings tank connected in sequence. The fluidized bed gold extraction device includes at least one fluidized bed gold extraction unit and a slurry pump connected to the fluidized bed gold extraction unit. The slurry pump is used to circulate the slurry in the fluidized bed gold extraction unit. The fluidized gold extraction unit includes a tank and an electrode assembly disposed within the tank, and at least one flow divider is disposed within the tank.
2. The gold extraction device for fluidized bed slurry electrolytic electrochemical extraction of gold-bearing materials according to claim 1, characterized in that, The upper part of the tank is a cylindrical body, and the lower part is an inverted conical body; the electrode assembly is located inside the cylindrical body; the flow divider is located inside the inverted conical body.
3. The gold extraction device for fluidized bed slurry electrolytic electrochemical extraction of gold-bearing materials according to claim 2, characterized in that, The flow divider is a conical cylinder, and the outer wall of the flow divider is connected to the inner wall of the lower part of the tank through a connecting column.
4. The gold extraction device for fluidized bed slurry electrolytic electrochemical extraction of gold-bearing materials according to claim 1, characterized in that, The fluidized bed gold extraction device includes a first fluidized bed gold extraction unit and a second fluidized bed gold extraction unit. The upper parts of the first fluidized bed gold extraction unit and the second fluidized bed gold extraction unit are connected by a connecting pipe, and the lower parts are connected by the slurry pump. The connecting pipe is equipped with a detachable valve; the slurry pump is connected to the first fluidized gold extraction unit and the second fluidized gold extraction unit through the first pipe and the second pipe respectively, the second pipe is connected to the third pipe, and the end of the third pipe is equipped with a three-way valve.
5. The gold extraction device for fluidized bed slurry electrolytic electrochemical extraction of gold-bearing materials according to claim 1, characterized in that, The electrode assembly includes: a cathode plate, an anode plate, and a diaphragm filter bag sleeved outside the cathode plate; the cathode plate is electrically connected to the negative terminal of the DC electrolysis power supply, and the anode plate is electrically connected to the positive terminal of the DC electrolysis power supply.
6. The gold extraction device for fluidized bed slurry electrolytic electrochemical extraction of gold-bearing materials according to claim 5, characterized in that, The number of cathode plates is at least two, and the cathode plates are connected in parallel; the number of anode plates is the same as the number of cathode plates, and the anode plates are connected in parallel; the cathode plates and anode plates are arranged alternately.
7. The gold extraction device for fluidized bed slurry electrolytic electrochemical extraction of gold-bearing materials according to claim 5, characterized in that, The pore size of the diaphragm filter bag is 5 micrometers.
8. The gold extraction device for fluidized bed slurry electrolytic electrochemical extraction of gold-bearing materials according to claim 1, characterized in that, The lower part of the trough is provided with a trough frame.
9. The gold extraction device for fluidized bed slurry electrolytic electrochemical extraction of gold-bearing materials according to claim 1, characterized in that, The slurry preparation tank is connected to the inlet of the fluidized gold extraction device via a feed pump.
10. The gold extraction device for fluidized bed slurry electrolytic electrochemical extraction of gold-bearing materials according to claim 1, characterized in that, The tail liquid tank is connected to the slurry conditioning tank via a peristaltic pump.