Ternary battery black powder wet recovery and copper removal equipment and method thereof

Abstract

The invention discloses ternary battery black powder wet recovery and copper removal equipment and a method thereof, and relates to the technical field of black powder recovery. Comprising a treatment tank, a partition plate is installed in the middle of the inner wall of the treatment tank, and the inner space of the treatment tank is divided into two treatment chambers through the partition plate. By arranging the stirring mechanism, the detection mechanism, the liquid adding mechanism, the liquid separation mechanism and the separation mechanism, stirring and next operation, material filling, reaction and solid-liquid separation operation can be automatically carried out, the automation performance is high, the black powder recovery efficiency can be improved, and by arranging the reaction mechanism, the production efficiency is improved. By arranging the cleaning mechanism, the reaction interval time can be self-defined or whether liquid contains copper or not can be detected after the reaction time is up, and whether stirring and mixing continue to be conducted or not is determined according to the detection result, so that the copper removal efficiency and the black powder recovery efficiency are improved, use is facilitated, and by arranging the cleaning mechanism, components providing the reaction space can be self-cleaned; result deviation is avoided, and use is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of black powder recovery, and in particular to a ternary battery black powder wet recovery and copper removal device and method. Background Art

[0002] Ternary batteries, usually referring to nickel cobalt manganese oxide batteries, are a type of lithium-ion battery that is currently widely used. They are often used in electric vehicles, portable electronic devices, and energy storage systems. In a recycling center that integrates a variety of electronic waste treatments, the center is mainly responsible for recycling used batteries, especially ternary lithium batteries. The center uses wet recycling technology to process black powder, including separating and recycling copper in black powder. When the recycling center recycles black powder and copper, it focuses on recycling efficiency.

[0003] The patent publication number is CN116646632A, which is a continuous waste lithium battery black powder recovery and treatment device and treatment method. The microwave pyrolysis reaction chamber and the microwave reduction roasting chamber are evacuated with negative pressure, and then filled with inert gas; the microwave pyrolysis reaction chamber and the microwave reduction roasting chamber are preheated; the black powder is added to the preheated microwave pyrolysis reaction chamber, and microwave pyrolysis is performed during the flat plate chain conveyor; the pyrolyzed material is transported into the microwave reduction roasting chamber, hydrogen is introduced into it, and microwave roasting and reduction are performed while the auger conveyor stirs and transports; the microwave roasting and reduction material enters the cooling chamber, falls on the plate chain conveyor, hydrogen is introduced into it, the material is cooled, and the hydrogen is preheated at the same time, the cooled material is discharged, and the preheated hydrogen is transported to the microwave reduction roasting chamber. It has the advantages of low energy consumption, high efficiency, short cycle, and cost saving.

[0004] The above-mentioned and similar ternary battery black powder wet recovery equipment has complicated overall steps and poor automation during the recovery process, and is not suitable for automated recovery of black powder in ternary batteries to improve black powder recovery efficiency. In addition, during the process of removing copper from black powder, due to the different copper contents in different batches of solutions, the reaction time required for the copper removal process is also different. If the solution is not automatically tested, the reaction time will be long, resulting in low black powder recovery efficiency, and the reaction time will be short, resulting in low purity of subsequent products. Therefore, the present invention is proposed. Summary of the invention

[0005] The object of the present invention is to provide a ternary battery black powder wet recovery copper removal device and method to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ternary battery black powder wet recovery and copper removal equipment, comprising a processing tank, a partition is installed in the middle of the inner wall of the processing tank, the inner space of the processing tank is divided into two processing chambers by the partition, a top plate is installed on the top of the processing tank, a liquid adding mechanism for adding processing liquid to the two processing chambers is installed on the top plate, a material discharge mechanism for discharging materials is installed on the top of the processing tank, a stirring mechanism for mixing the liquid in the processing chamber is installed on the top outer wall of the top plate, a reaction mechanism for detecting whether the solution in the processing chamber at the bottom of the processing tank contains copper is installed on the bottom outer wall of the processing tank, and a detection mechanism for monitoring the stirring effect is installed on the stirring mechanism; The reaction mechanism comprises a liquid extraction pipe installed on the outer wall of the bottom of the processing tank, a liquid valve and a first pump are installed on the liquid extraction pipe, the liquid extraction pipe is L-shaped, a reaction base is installed on the top of the outer wall of the liquid extraction pipe, a round block is installed on the outer wall of the processing tank, a reaction cover is installed on the round block, a second storage tank is installed on the top outer wall of the reaction cover, a second flow meter valve is installed at the discharge pipe opening of the second storage tank, an arc plate is installed at the top pipe opening of the liquid extraction pipe, a gap is left between the arc plate and the top pipe opening of the liquid extraction pipe for liquid discharge, a limiting ring is installed on the round block, a reaction ring is placed in the limiting ring, and the reaction A plurality of plug-in blocks are fixedly connected to the bottom of the inner wall of the ring, and slots corresponding to the plug-in blocks are opened on the bottom outer wall of the reaction base. The plug-in blocks are plugged into the slots to complete the splicing of the reaction ring and the reaction base. A reaction space is formed by the reaction ring, the reaction cover and the reaction base. The solution in the processing chamber at the bottom of the processing tank is extracted into the reaction space through the liquid valve on the liquid extraction pipe in cooperation with the first pump. The material is put into the reaction space through the second storage tank to contact with the solution and react to determine whether the solution contains copper. A cleaning mechanism for cleaning the reaction ring and the reaction base is installed on the liquid extraction pipe.

[0007] Furthermore, the cleaning mechanism includes a water inlet pipe installed on the liquid suction pipe, a water valve is installed on the water inlet pipe, the water inlet pipe is located between the liquid valve and the first pump, a transverse plate is installed on the outer wall of the liquid suction pipe, a second gear driven by the cleaning motor is installed on the top of the transverse plate, a plurality of corresponding annular grooves and inner grooves are provided on the outer wall and inner wall of the liquid suction pipe, a second gear ring is installed in one of the annular grooves, a magnet is embedded in the inner wall of the second gear ring, the second gear is meshed with the second gear ring, magnetic rings are installed in the remaining annular grooves, iron rings are installed in the inner grooves, and the iron rings and the magnetic rings are mutually engaged Adsorption, a transmission rod is fixedly connected to the inner wall of the iron ring located inside the liquid extraction tube, and a gap is left between the transmission rod and the inside of the liquid extraction tube for liquid circulation; a vertical plate is connected to the outer wall of the magnetic ring through a fixed rod, and a detachable cleaning plate is installed on the vertical plate; a lifting component for adjusting the height of the reaction ring is installed on the limit ring, and the height of the reaction ring is adjusted to fit with the cleaning plate by the lifting component, so that the reaction ring and the reaction base can be cleaned; an arc ring is installed on the outer wall of the liquid extraction tube at the top of the second tooth ring, and a number of nozzles facing the cleaning plate are installed on the outer wall of the liquid extraction tube.

[0008] Furthermore, the stirring mechanism includes a first gear ring installed on the top outer wall of the top plate and a first gear driven by the stirring motor, the first gear ring and the first gear are meshed with each other, an annular block is fixedly connected to the inner wall of the first gear ring, a plurality of spring telescopic rods are embedded and installed in the bottom outer wall of the annular block, an arc-shaped sealing block is installed at one end of the piston rod of the spring telescopic rod, a plurality of vertical columns penetrating the arc-shaped sealing block are installed on the bottom outer wall of the annular block, a connecting plate is installed on the bottom outer wall of the vertical column, a vertical rod is installed between the bottom outer wall of the connecting plate and the top outer wall of the partition, and a plurality of stirring rods are installed on the outer wall of the vertical rod The bottom of the vertical rod is a hollow structure, a sleeve is fixedly connected to the inner wall of the vertical rod, an expansion head is installed on the outer wall of the bottom of the sleeve, a horizontal plate is installed on the outer wall of the sleeve and the vertical rod, a scraper that fits the inner wall of the treatment tank is installed on the outer wall of the horizontal plate, a convex column and a pH meter are installed on the scraper, a number of inclined inclined rods are installed at the bottom of the horizontal plate on the sleeve, a number of branch rods are installed on the outer wall of the inclined rod, a liquid separation mechanism for discharging the liquid in the treatment chamber at the top of the treatment tank to the treatment chamber at the bottom of the treatment tank is installed on the vertical rod, and a separation mechanism for separating solids and liquids is installed at the bottom of the inner wall of the treatment tank.

[0009] Furthermore, the liquid separation mechanism includes a liquid collecting pipe installed in the inner wall of the bottom of the vertical rod, a second pump is installed at the bottom of the liquid collecting pipe, and several suction pipes are installed on the liquid collecting pipe. The liquid inlet of the suction pipe is located in the processing chamber at the top of the processing tank, and a filter is installed at the liquid inlet of the suction pipe.

[0010] Furthermore, the separation mechanism includes two circular plates installed on the bottom of the inner wall of the processing tank, one of which is rotatably connected to the other circular plate, and fan-shaped filter plates are installed on the top outer walls of the circular plates. An electromagnetic block is installed on the top outer wall of the circular plate, and the outer wall of the electromagnetic block is wrapped with an iron block, which is fixedly connected to the inclined rod.

[0011] Furthermore, the liquid adding mechanism includes a mounting block embedded and installed on the top plate, a plurality of first storage tanks are embedded and installed on the mounting block, a removable tank cover is installed on the top of the first storage tank, a filter screen is embedded and installed on the tank cover, a connecting pipe is installed on the bottom of the first storage tank, the connecting pipes are respectively fixedly connected to the top outer wall and the bottom outer wall of the processing tank, the first storage tank adds liquid to the processing chamber through the connecting pipe, a first flow meter valve is installed on the connecting pipe, an annular tube is installed on the outer wall of the processing tank, an inflation tube connected to the connecting tube is installed on the annular tube, an air valve is installed on the inflation tube, and a fan is installed at the pipe mouth of the annular tube.

[0012] Furthermore, the detection mechanism includes a pressure sensor embedded in the stirring rod, a rubber sleeve is sleeved on the pressure sensor, a spring is installed between the pressure sensor and the rubber sleeve, and the pressure on the pressure sensor is changed by compressing the rubber sleeve and the spring through liquid.

[0013] Furthermore, the unloading mechanism includes a unloading funnel installed on the top plate, the unloading funnel is inserted into the annular block, a bearing plate is installed on the inner wall of the annular block, a crushing block is installed on the bearing plate, the crushing block is located in the unloading funnel, a heating plate is embedded in the bottom of the inner wall of the processing tank, a processing window connected to the processing chamber is installed on the outer wall of the processing tank, a supporting leg is installed on the bottom outer wall of the processing tank, a bottom plate is installed on the bottom outer wall of the supporting leg, and a drain pipe is installed on the bottom of the outer wall of the reaction ring.

[0014] A method for wet recovery and copper removal of black powder of a ternary battery, using the above-mentioned wet recovery and copper removal equipment for black powder of a ternary battery, the method comprising: Step 1: slurry preparation, the raw material ternary black powder is put into the processing chamber at the top of the processing tank through the feeding mechanism, and the black powder and water are fully mixed and prepared into a uniform slurry by adding water through the liquid adding mechanism and the stirring mechanism; Step 2: intermediate leaching: adding strong acid to the slurry through a liquid adding mechanism, stirring the slurry through a stirring mechanism to obtain intermediate leaching residue and intermediate leaching mother liquor, separating the intermediate leaching mother liquor and the intermediate leaching residue through a liquid separation mechanism, the intermediate leaching residue stays in a treatment chamber at the top of the treatment tank, and the intermediate leaching mother liquor is transported to a treatment chamber at the bottom of the treatment tank; Step 3: Leaching, adding strong acid and reducing agent to the intermediate leaching residue through a liquid adding mechanism for acid leaching treatment, and obtaining carbon slag and acid leaching mother liquor after acid leaching treatment, and the acid leaching mother liquor can be recovered and used as the acid added in the intermediate leaching step; Step 4: removing copper, adjusting the pH of the leaching mother liquor to 3-5 through the liquid adding mechanism, and heating it to a processing chamber temperature greater than 50°C through the heating plate, and then adding sodium thiosulfate, and fully reacting for 30min-90min, and then performing solid-liquid separation through the separation mechanism to obtain the copper removal mother liquor and copper slag. During the reaction, the reaction mechanism extracts a sample to determine whether the sample contains copper to determine whether to continue the reaction; Step 5: slag washing, mixing the obtained copper slag with water in a certain proportion, and fully stirring for 30min-90min, and then filtering to obtain copper slag and washing water, wherein the mass ratio of copper slag to water is 0.1:1.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The ternary battery black powder wet recovery and copper removal equipment and method can automatically perform stirring and carry out the next operation, material filling, reaction and solid-liquid separation operations through the provided stirring mechanism, detection mechanism, liquid adding mechanism, liquid separation mechanism and separation mechanism. The automation performance is high and the efficiency of black powder recovery can be improved. Through the setting of the reaction mechanism, the reaction interval time can be customized or the liquid can be tested for copper after the reaction time is reached. According to the test result, it is determined whether to continue stirring and mixing to improve the efficiency of copper removal and the efficiency of black powder recovery. The cleaning mechanism can be provided to self-clean the components providing the reaction space to avoid result deviation, which is convenient for use.

[0016] At the same time, when the black powder and water are mixed to form a slurry, stirring is required, and stirring is performed by a stirring rod. During the stirring process, the pressure change during the stirring process can be monitored by a pressure sensor, a spring and a rubber sleeve, and the pressure change can be judged according to the pressure change whether the black powder and water are fully mixed to form a slurry. The spring telescopic rod is provided in conjunction with the arc-shaped sealing block, so that the arc-shaped sealing block has the phenomenon of moving downward under the condition of gravity, which is convenient for material discharge. When it is not subject to gravity, it will fit with the inner wall of the annular block to play a sealing role. At the same time, due to its arc-shaped design, the area for black powder discharge can also be increased, which is conducive to accelerating the reaction efficiency of the black powder. The arc-shaped plate can avoid the phenomenon of material blocking the liquid extraction pipe in the second storage tank during the discharge process, and at the same time, the liquid discharge height at one end of the liquid extraction pipe is limited to avoid high liquid spraying during liquid discharge.

[0017] At the same time, air can be inflated into the connecting pipe through the set fan, inflation pipe, air valve and annular pipe, so that when the material is discharged, it has impact force, plays an anti-blocking role and improves the mixing efficiency. Through the set air valve, any one or more connecting pipes can be inflated according to the usage. When the black powder enters the discharge funnel, the large black powder will be stuck in the gap between the crushing block and the discharge funnel. By starting the stirring mechanism to drive the crushing block to rotate, the black powder can be squeezed and crushed to increase the reaction area of ​​the black powder and improve the reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the top structure of the top plate of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the processing tank of the present invention; Figure 4 It is a schematic diagram of the internal structure of the processing tank of the present invention; Figure 5 It is a schematic diagram of the structure of the liquid adding mechanism of the present invention; Figure 6 It is a schematic diagram of the reaction mechanism structure of the present invention; Figure 7 This is a schematic diagram of the bottom structure of the reaction ring of the present invention; Figure 8 It is a schematic diagram of the structure of a part of the cleaning mechanism of the present invention; Fig. 9 It is a schematic diagram of the enlarged structure of point A of the present invention; Fig.10 It is a schematic diagram of the structure of the detection mechanism of the present invention; Fig.11 A schematic diagram of the separation mechanism structure of the present invention; Fig.12 It is a schematic diagram of the method flow structure of the present invention.

[0019] In the figure: 1, treatment tank; 2, treatment window; 3, liquid adding mechanism; 301, mounting block; 302, first storage tank; 303, tank cover; 304, filter screen; 305, first flow meter valve; 306, charging pipe; 307, connecting pipe; 308, air valve; 309, annular pipe; 310, fan; 4, feeding mechanism; 401, feeding funnel; 402, crushing block; 5, stirring mechanism; 501, first gear ring; 502, first gear wheel; 503, annular block; 504, arc-shaped sealing block; 505, connecting plate; 506, vertical rod; 507, stirring rod; 508, spring telescopic rod; 509, vertical column; 510, scraper; 511, convex column; 512, inclined rod; 513, branch rod; 514, sleeve; 6, top plate; 7, bottom plate; 8, reaction mechanism; 801, liquid extraction pipe; 802, liquid valve; 803, first pump; 804, liquid discharge pipe; 805, limit ring ; 806, reaction ring; 807, reaction cover; 808, second flow meter valve; 809, second storage tank; 810, arc plate; 811, round block; 812, reaction base; 813, slot; 814, plug; 9, cleaning mechanism; 901, water inlet pipe; 902, water valve; 903, arc ring; 904, lifting assembly; 905, vertical plate; 906, cleaning plate; 907, second gear ring; 908, iron ring; 909, transmission Moving rod; 910, magnetic ring; 911, nozzle; 912, second gear; 10, partition; 11, heating plate; 12, liquid separation mechanism; 1201, liquid collecting pipe; 1202, liquid suction pipe; 1203, second pump; 13, detection mechanism; 1301, pressure sensor; 1302, spring; 1303, rubber sleeve; 14, separation mechanism; 1401, circular plate; 1402, filter plate; 1403, electromagnetic block; 1404, iron block. DETAILED DESCRIPTION

[0020] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0021] The black powder of ternary batteries contains not only valuable metals such as nickel, cobalt, and lithium, but also copper. The presence of copper will affect the purity of the final recycled product and reduce its market value. Therefore, copper removal operations can improve the purity of the final product, make it meet the standards for reuse, and increase added value.

[0022] like Figure 1-Figure 11As shown, the present invention provides a technical solution: a ternary battery black powder wet recovery and copper removal equipment, a processing tank 1, a partition 10 is installed in the middle of the inner wall of the processing tank 1, and the internal space of the processing tank 1 is divided into two processing chambers by the partition 10, a top plate 6 is installed on the top of the processing tank 1, and a liquid adding mechanism 3 for adding processing liquid to the two processing chambers is installed on the top plate 6, a material unloading mechanism 4 for unloading is installed on the top of the processing tank 1, a stirring mechanism 5 for mixing the liquid in the processing chamber is installed on the top outer wall of the top plate 6, a reaction mechanism 8 for detecting whether the solution in the processing chamber at the bottom of the processing tank 1 contains copper is installed on the bottom outer wall of the processing tank 1, and a detection mechanism 13 for monitoring the stirring effect is installed on the stirring mechanism 5; It should be noted that the internal space of the treatment tank 1 is divided into two treatment chambers by the partition 10, and the operation and treatment can be carried out separately in the two treatment chambers, which is conducive to improving the recovery efficiency. The liquid adding mechanism 3 can automatically put the required liquid into the required treatment chamber to reduce the error and insecurity of manual liquid addition. The unloading mechanism 4 can be used by the staff to put the black powder into the treatment tank 1. The stirring mechanism 5 can be used to fully mix the liquid and solid in the treatment chamber to improve the recovery efficiency of the black powder. The reaction mechanism 8 can be used to detect the final treatment. Whether the solution contains copper to ensure the efficiency of copper removal and black powder recovery. In the specific black powder recovery process, the material first enters the treatment chamber at the top of the treatment tank 1 through the unloading mechanism 4, and water is added to mix into a slurry. After mixing into a slurry, acid is added for intermediate leaching and solid-liquid separation, so that the solid remains in the treatment chamber at the top of the treatment tank 1 and the liquid enters the treatment chamber at the bottom of the treatment tank 1. After improving the liquid pH environment to 3-5 and adjusting the liquid temperature environment, sodium thiosulfate is added for sufficient reaction to obtain a copper removal mother liquor and copper slag. The copper removal mother liquor is the product obtained by copper removal, so as to facilitate subsequent further recycling.

[0023] The reaction mechanism 8 includes a liquid extraction pipe 801 installed on the outer wall of the bottom of the processing tank 1, a liquid valve 802 and a first pump 803 are installed on the liquid extraction pipe 801, the liquid extraction pipe 801 is L-shaped, a reaction base 812 is installed on the top of the outer wall of the liquid extraction pipe 801, a round block 811 is installed on the outer wall of the processing tank 1, a reaction cover 807 is installed on the round block 811, a second storage tank 809 is installed on the top outer wall of the reaction cover 807, a second flow meter valve 808 is installed at the discharge pipe mouth of the second storage tank 809, an arc plate 810 is installed at the top pipe mouth of the liquid extraction pipe 801, a gap is left between the arc plate 810 and the top pipe mouth of the liquid extraction pipe 801 for liquid discharge, a limiting ring 805 is installed on the round block 811, and a reaction ring 807 is placed in the limiting ring 805 6. A plurality of plug blocks 814 are fixedly connected to the bottom of the inner wall of the reaction ring 806. A slot 813 corresponding to the plug block 814 is opened on the bottom outer wall of the reaction base 812. The plug block 814 is inserted into the slot 813 to complete the splicing of the reaction ring 806 and the reaction base 812. The reaction space is formed by the reaction ring 806, the reaction cover 807 and the reaction base 812. The solution in the processing chamber at the bottom of the processing tank 1 is extracted into the reaction space through the liquid valve 802 on the extraction tube 801 in cooperation with the first pump 803. The material is put into the reaction space through the second storage tank 809 to contact with the solution and react to determine whether the solution contains copper. The extraction tube 801 is equipped with a cleaning mechanism 9 for cleaning the reaction ring 806 and the reaction base 812.

[0024] It should be noted that, by setting the arc plate 810, the phenomenon of the material blocking the liquid extraction pipe 801 during the unloading process of the second storage tank 809 can be avoided, and at the same time, the liquid outlet height at one end of the liquid extraction pipe 801 is limited. In the copper removal reaction process, the liquid in the reaction process is extracted into the reaction space through the first pump 803 and the liquid valve 802 by the set liquid extraction pipe 801. The second storage tank 809 can store sodium hydroxide and other materials that can obviously react with copper ions. Sodium hydroxide is put into the reaction space through the second storage tank 809 to react with the liquid. The content of the liquid and the content of sodium hydroxide are set by the staff. The meter valve 808 can monitor the amount of sodium hydroxide added, and judge whether the copper content in the liquid meets the standard by judging the amount of sodium hydroxide generated as a product or whether sodium hydroxide exists in the generated product. Copper hydroxide is blue, which is convenient for directly observing the reaction result, and is convenient for use. Moreover, copper hydroxide can be directly recycled. By setting the reaction mechanism 8, the reaction interval time can be customized or the liquid can be tested for copper after the reaction time is reached. According to the test result, it can be determined whether to continue stirring and mixing to improve the efficiency of copper removal and black powder recovery, which is convenient for use. By setting the cleaning mechanism 9, the components providing the reaction space can be self-cleaned to avoid result deviation, which is convenient for use.

[0025] like Figure 6-Figure 9 As shown, the cleaning mechanism 9 includes a water inlet pipe 901 installed on the liquid pumping pipe 801, a water valve 902 is installed on the water inlet pipe 901, the water inlet pipe 901 is located between the liquid valve 802 and the first pump 803, a horizontal plate is installed on the outer wall of the liquid pumping pipe 801, a second gear 912 driven by a cleaning motor is installed on the top of the horizontal plate, a plurality of corresponding annular grooves and inner grooves are provided on the outer wall and the inner wall of the liquid pumping pipe 801, a second gear ring 907 is installed in one of the annular grooves, a magnet is embedded in the inner wall of the second gear ring 907, the second gear 912 is meshed with the second gear ring 907, the remaining annular grooves are installed with magnetic rings 910, the inner grooves are all installed with iron rings 908, the iron rings 908 and the magnetic rings 910 are attracted to each other, and the inner wall of the iron rings 908 A transmission rod 909 is fixedly connected to the inside of the liquid extraction tube 801 in the wall, and a gap is left between the transmission rod 909 and the inside of the liquid extraction tube 801 for liquid circulation. A vertical plate 905 is connected to the outer wall of the magnetic ring 910 through a fixed rod, and a detachable cleaning plate 906 is installed on the vertical plate 905. A lifting component 904 for adjusting the height of the reaction ring 806 is installed on the limit ring 805. The height of the reaction ring 806 is adjusted by the lifting component 904 to fit with the cleaning plate 906, so that the reaction ring 806 and the reaction base 812 can be cleaned. An arc ring 903 is installed on the outer wall of the liquid extraction tube 801 at the top of the second tooth ring 907, and a plurality of nozzles 911 facing the cleaning plate 906 are installed on the outer wall of the liquid extraction tube 801.

[0026] It should be noted that when the cleaning mechanism 9 needs to be used, the water inlet pipe 901 is connected to an external water source and the water valve 902 is opened and the liquid valve 802 is closed. The inner wall of the liquid extraction tube 801 is cleaned by the water supply. At the same time, water will flow out from the gap between the arc plate 810 and the liquid extraction tube 801 to flush the outer wall of the liquid extraction tube 801 and the top of the reaction base 812. The height of the reaction ring 806 is adjusted by the lifting component 904 until the inner wall of the reaction ring 806 is in contact with the cleaning plate 906. By starting the cleaning motor, the second gear 912 is driven to rotate, and then the second gear ring 907 is driven to rotate. The rotation of the second gear ring 907 drives the iron ring 908 corresponding to the second gear ring 907 to rotate, and then the transmission rod 909 is driven to rotate. The rotation drives the other iron rings 908 and the magnetic ring 910 to rotate, and then drives the vertical plate 905 and the cleaning plate 906 to rotate, and then water is sprayed through the nozzle 911 to complete the flushing of the inner wall of the reaction ring 806, and then complete the self-cleaning of the reaction space. Before cleaning, the solid generated by the reaction needs to be removed.

[0027] like Figure 2-Figure 4As shown, the stirring mechanism 5 includes a first gear ring 501 installed on the top outer wall of the top plate 6 and a first gear 502 driven by a stirring motor, the first gear ring 501 and the first gear 502 are meshed with each other, an annular block 503 is fixedly connected to the inner wall of the first gear ring 501, a plurality of spring telescopic rods 508 are embedded and installed in the bottom outer wall of the annular block 503, an arc-shaped sealing block 504 is installed at one end of the piston rod of the spring telescopic rod 508, a plurality of vertical columns 509 penetrating the arc-shaped sealing block 504 are installed on the bottom outer wall of the annular block 503, a connecting plate 505 is installed on the bottom outer wall of the vertical column 509, a vertical rod 506 is installed between the bottom outer wall of the connecting plate 505 and the top outer wall of the partition 10, and a plurality of stirring Rod 507, the bottom of the vertical rod 506 is a hollow structure, a sleeve 514 is fixedly connected to the inner wall of the vertical rod 506, an expansion head is installed on the outer wall of the bottom of the sleeve 514, a horizontal plate is installed on the outer wall of the sleeve 514 and the vertical rod 506, a scraper 510 that fits the inner wall of the treatment tank 1 is installed on the outer wall of the horizontal plate, a boss 511 and a pH meter are installed on the scraper 510, a plurality of inclined inclined rods 512 are installed at the bottom of the horizontal plate on the sleeve 514, a plurality of branch rods 513 are installed on the outer wall of the inclined rod 512, a liquid separation mechanism 12 for discharging the liquid in the treatment chamber at the top of the treatment tank 1 to the treatment chamber at the bottom of the treatment tank 1 is installed on the vertical rod 506, and a separation mechanism 14 for separating solids and liquids is installed at the bottom of the inner wall of the treatment tank 1.

[0028] It should be noted that when the stirring mechanism 5 needs to be used, the stirring motor is started to drive the first gear 502 to rotate, and then the first gear ring 501 and the annular block 503 on the inner wall of the first gear ring 501 are driven to rotate, and the vertical column 509 on the annular block 503 drives the connecting plate 505 and the vertical rod 506 on the connecting plate 505 and the stirring rod 507 on the vertical rod 506 to rotate. By rotating the stirring rod 507, the liquid in the top processing chamber of the processing tank 1 can be stirred, and the sleeve 514 is driven by the rotation of the vertical rod 506, and then the inclined rod 512 is driven to rotate, so as to stir the liquid in the bottom processing chamber of the processing tank 1. The branch rod 513 on the inclined rod 512 can increase the stirring area, which is convenient for use. The scraper 510 can be used to remove the attachments attached to the inner wall of the processing tank 1, thereby playing a cleaning role. The pH meter can be used to monitor the pH condition of the liquid, thereby facilitating the adjustment of the pH environment of the liquid. The spring telescopic rod 508 cooperates with the arc-shaped sealing block 504, so that the arc-shaped sealing block 504 has the phenomenon of moving downward under the condition of gravity. When not subjected to gravity, it will fit with the inner wall of the annular block 503 to play a sealing role. At the same time, due to its arc-shaped design, the area for discharging black powder can also be increased, which is beneficial to speeding up the reaction efficiency of the black powder. The vertical column 509 is provided to position the arc-shaped sealing block 504 for lifting and lowering. The liquid separation mechanism 12 and the separation mechanism 14 are provided to provide a solid-liquid separation effect.

[0029] like Figure 4 As shown, the liquid separation mechanism 12 includes a liquid collecting pipe 1201 installed in the inner wall at the bottom of the vertical rod 506, a second pump 1203 is installed at the bottom of the liquid collecting pipe 1201, a plurality of liquid suction pipes 1202 are installed on the liquid collecting pipe 1201, the liquid inlet of the liquid suction pipe 1202 is located in the processing chamber at the top of the processing tank 1, and a filter is installed at the liquid inlet of the liquid suction pipe 1202.

[0030] It should be noted that when the liquid separation mechanism 12 is needed, the second pump 1203 is started to provide suction, and the liquid in the processing chamber at the top of the processing tank 1 is sucked into the collecting pipe 1201 by the suction pipe 1202 and discharged into the processing chamber at the bottom of the processing tank 1 through the sleeve 514. The filter screen is set to avoid blockage.

[0031] like Fig.11 As shown, the separation mechanism 14 includes two circular plates 1401 installed on the bottom of the inner wall of the processing tank 1, one of the circular plates 1401 is rotatably connected to the other circular plate 1401, and a fan-shaped filter plate 1402 is installed on the top outer wall of the circular plate 1401, and an electromagnetic block 1403 is installed on the top outer wall of the circular plate 1401. The outer wall of the electromagnetic block 1403 is wrapped with an iron block 1404, and the iron block 1404 is fixedly connected to the inclined rod 512.

[0032] It should be noted that when the separation mechanism 14 is needed, the electromagnetic block 1403 is energized so that the electromagnetic block 1403 adsorbs the iron block 1404, and then when the iron block 1404 rotates, the electromagnetic block 1403 and one of the circular plates 1401 are driven to rotate, and the filter plates 1402 on the two circular plates 1401 overlap to perform solid-liquid separation.

[0033] like Figure 5 As shown, the liquid adding mechanism 3 includes a mounting block 301 embedded and installed on the top plate 6, a plurality of first storage tanks 302 are embedded and installed on the mounting block 301, a detachable tank cover 303 is installed on the top of the first storage tank 302, a filter screen 304 is embedded and installed on the tank cover 303, a connecting pipe 307 is installed on the bottom of the first storage tank 302, the connecting pipe 307 is respectively fixedly connected to the top outer wall and the bottom outer wall of the processing tank 1, the first storage tank 302 adds liquid to the processing chamber through the connecting pipe 307, a first flow meter valve 305 is installed on the connecting pipe 307, an annular pipe 309 is installed on the outer wall of the processing tank 1, an inflation pipe 306 connected to the connecting pipe 307 is installed on the annular pipe 309, an air valve 308 is installed on the inflation pipe 306, a fan 310 is installed at the pipe mouth of the annular pipe 309.

[0034] It should be noted that when it is necessary to use the liquid adding mechanism 3, the first storage tank 302 is used to store the materials that need to be put in. The filter screen 304 on the tank cover 303 plays a ventilation role, which is beneficial to the preservation of the materials. The connecting pipe 307 provided cooperates with the first flow meter valve 305 to control the material discharge amount. Through a plurality of first storage tanks 302, the processing chambers located at the top and bottom of the processing tank 1 can be automatically put into the materials, which is beneficial to improve automation and accelerate the black powder recovery efficiency. At the same time, through the fan 310, the inflation pipe 306, the air valve 308 and the annular pipe 309 provided, the connecting pipe 307 can be inflated, so that when the materials are put in, the materials have impact force, which plays an anti-blocking role and improves the mixing efficiency. Through the provided air valve 308, any one or more connecting pipes 307 can be inflated according to the usage.

[0035] like Fig.10 As shown, the detection mechanism 13 includes a pressure sensor 1301 embedded in the stirring rod 507, a rubber sleeve 1303 is sleeved on the pressure sensor 1301, and a spring 1302 is installed between the pressure sensor 1301 and the rubber sleeve 1303. The pressure on the pressure sensor 1301 is changed by compressing the rubber sleeve 1303 and the spring 1302 through liquid.

[0036] It should be noted that when the black powder and water are mixed to form a slurry, stirring is required, and stirring is performed by the stirring rod 507. During the stirring process, the pressure change during the stirring process can be monitored by the pressure sensor 1301, the spring 1302 and the rubber sleeve 1303. According to the pressure change, it is determined whether the black powder and water are fully mixed to form a slurry. When the pressure change of the pressure sensor 1301 is stable, a slurry is formed. During the stirring process of pressure monitoring, it is necessary to ensure that the stirring speed value is consistent.

[0037] like Figure 4 As shown, the unloading mechanism 4 includes a unloading funnel 401 installed on the top plate 6, the unloading funnel 401 is inserted into the annular block 503, a bearing plate is installed on the inner wall of the annular block 503, a crushing block 402 is installed on the bearing plate, the crushing block 402 is located in the unloading funnel 401, a heating plate 11 is embedded in the bottom of the inner wall of the processing tank 1, a processing window 2 connected to the processing chamber is installed on the outer wall of the processing tank 1, a supporting leg is installed on the bottom outer wall of the processing tank 1, a bottom plate 7 is installed on the bottom outer wall of the supporting leg, and a drain pipe 804 is installed on the bottom of the outer wall of the reaction ring 806.

[0038] It should be noted that the discharge funnel 401 can be used for discharge processing. When the black powder enters the discharge funnel 401, the large black powder will be stuck in the gap between the crushing block 402 and the discharge funnel 401. By starting the stirring mechanism 5 to drive the crushing block 402 to rotate, the black powder can be squeezed and crushed to increase the reaction area of ​​the black powder and improve the reaction efficiency. The solid products generated in the two reaction chambers can be taken out through the processing window 2, and the liquid can be discharged through the set drain pipe 804 to facilitate recovery.

[0039] A method for wet recovery and copper removal of ternary battery black powder, the method comprising: Step 1: slurry preparation, the raw material ternary black powder is put into the processing chamber located at the top of the processing tank 1 through the feeding mechanism 4, and water is added through the liquid adding mechanism 3 and the stirring mechanism 5 to fully mix the black powder and water to form a uniform slurry; Step 2: intermediate leaching: adding a strong acid to the slurry through the liquid adding mechanism 3, stirring the reaction through the stirring mechanism 5 to obtain intermediate leaching residue and intermediate leaching mother liquor, separating the intermediate leaching mother liquor and the intermediate leaching residue through the liquid separation mechanism 12, the intermediate leaching residue stays in the treatment chamber located at the top of the treatment tank 1, and the intermediate leaching mother liquor is transported to the treatment chamber located at the bottom of the treatment tank 1; Step 3: Leaching, adding a strong acid and a reducing agent to the intermediate leaching residue through the liquid adding mechanism 3 for acid leaching, and obtaining carbon slag and acid leaching mother liquor after the acid leaching, and the acid leaching mother liquor can be recovered and used as the acid added in the intermediate leaching step; Step 4: removing copper, adjusting the pH of the leaching mother liquor to 3-5 by the liquid adding mechanism 3, and heating it to a processing chamber temperature greater than 50°C by the heating plate 11, and then adding sodium thiosulfate, and fully reacting for 30-90 minutes, and then performing solid-liquid separation by the separation mechanism 14 to obtain the copper removal mother liquor and copper slag, and extracting a sample by the reaction mechanism 8 during the reaction process to determine whether the sample contains copper to determine whether to continue the reaction; Step 5: slag washing, mixing the obtained copper slag with water in a certain proportion, and fully stirring for 30-90 minutes, and then filtering to obtain copper slag and washing water, wherein the mass ratio of copper slag to water is 0.1:1.

[0040] It should be noted that the overall processing flow is as follows Fig.12 As shown, in the intermediate leaching stage, the added acid can be the acid leaching mother liquor after acid leaching treatment. By using the acid leaching mother liquor as the added acid, the cost can be reduced. During the treatment process, leaching reduction is first carried out under acidic conditions so that each valuable metal element is leached, and the high-valent metal ions are reduced to divalent by hydrogen peroxide. Then, the pH value of the leaching solution is adjusted to 3-5, and sodium thiosulfate is added thereto, and the molar ratio of the amount of sodium thiosulfate added to the copper ions in the solution is 0.8:1.5. Then, the copper slag obtained is washed with water and separated into solid and liquid to obtain qualified cuprous sulfide slag, and the obtained copper slag has high quality. The alkaline solution for adjusting the pH value of the solution in the copper removal process can be one of sodium carbonate, sodium hydroxide, calcium hydroxide, potassium hydroxide and barium hydroxide solution, or a combination of at least two of them. The thiosulfate used for copper removal is one of sodium thiosulfate, potassium thiosulfate and ammonium thiosulfate, preferably sodium thiosulfate. The acid used for acid leaching is one of hydrochloric acid, nitric acid and sulfuric acid, the concentration of hydrochloric acid is greater than 20%wt, the concentration of sulfuric acid is greater than 500%wt, and the concentration of nitric acid is greater than 10%wt. The reducing agent used is hydrogen peroxide, and the concentration of hydrogen peroxide is greater than 5%.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is limited by the attached embodiments and their equivalents.

Claims

1. A ternary battery black powder wet recovery and copper removal device, comprising a processing tank (1), Features: A partition (10) is installed in the middle of the inner wall of the processing tank (1), and the partition (10) divides the internal space of the processing tank (1) into two processing chambers. A top plate (6) is installed on the top of the processing tank (1), and a liquid adding mechanism (3) for adding processing liquid to the two processing chambers is installed on the top plate (6). A material discharge mechanism (4) for discharging materials is installed on the top of the processing tank (1). A stirring mechanism (5) for mixing the liquid in the processing chamber is installed on the top outer wall of the top plate (6). A reaction mechanism (8) for detecting whether the solution in the processing chamber at the bottom of the processing tank (1) contains copper is installed on the bottom outer wall of the processing tank (1). A detection mechanism (13) for monitoring the stirring effect is installed on the stirring mechanism (5); The reaction mechanism (8) comprises a liquid extraction pipe (801) installed on the outer wall of the bottom of the processing tank (1), a liquid valve (802) and a first pump (803) are installed on the liquid extraction pipe (801), the liquid extraction pipe (801) is L-shaped, a reaction base (812) is installed on the top of the outer wall of the liquid extraction pipe (801), a round block (811) is installed on the outer wall of the processing tank (1), a reaction cover (807) is installed on the round block (811), and the reaction cover (807) is installed on the reaction cover (807). A second storage tank (809) is installed on the top outer wall of the second storage tank (807), a second flow meter valve (808) is installed at the discharge pipe opening of the second storage tank (809), an arc plate (810) is installed at the top pipe opening of the liquid extraction pipe (801), a gap is left between the arc plate (810) and the top pipe opening of the liquid extraction pipe (801) for liquid discharge, a limit ring (805) is installed on the round block (811), and a reaction A reaction ring (806) is provided, wherein a plurality of plug blocks (814) are fixedly connected to the bottom of the inner wall of the reaction ring (806), a slot (813) corresponding to the plug block (814) is provided on the bottom outer wall of the reaction base (812), and the plug block (814) is plugged into the slot (813) to complete the splicing of the reaction ring (806) and the reaction base (812). A reaction space is formed by the reaction ring (806), the reaction cover (807) and the reaction base (812), and a liquid valve (802) on the liquid extraction pipe (801) cooperates with a first pump (803) to extract a solution located in a processing chamber at the bottom of the processing tank (1) into the reaction space, and a material is put into the reaction space through a second storage tank (809) to contact with the solution and react to determine whether the solution contains copper, and a cleaning mechanism (9) for cleaning the reaction ring (806) and the reaction base (812) is installed on the liquid extraction pipe (801).

2. According to claim 1, a ternary battery black powder wet recovery and copper removal equipment, Features: The cleaning mechanism (9) comprises a water inlet pipe (901) mounted on the liquid extraction pipe (801), a water valve (902) being mounted on the water inlet pipe (901), the water inlet pipe (901) being located between the liquid valve (802) and the first pump (803), a horizontal plate being mounted on the outer wall of the liquid extraction pipe (801), a second gear (912) driven by a cleaning motor being mounted on the top of the horizontal plate, a plurality of corresponding annular grooves and inner grooves being provided on the outer wall and inner wall of the liquid extraction pipe (801), a second gear ring (907) being mounted in one of the annular grooves, a magnet being embedded in the inner wall of the second gear ring (907), the second gear (912) being meshed with the second gear ring (907), magnetic rings (910) being mounted in the remaining annular grooves, iron rings (908) being mounted in the inner grooves, the iron rings (908) and the magnetic rings (910) being attracted to each other, and magnets being embedded in the inner wall of the iron rings (908). A transmission rod (909) is fixedly connected to the inside of the liquid extraction tube (801), and a gap is left between the transmission rod (909) and the inside of the liquid extraction tube (801) for liquid circulation. A vertical plate (905) is connected to the outer wall of the magnetic ring (910) via a fixed rod, and a detachable cleaning plate (906) is installed on the vertical plate (905). A lifting component (904) for adjusting the height of the reaction ring (806) is installed on the limiting ring (805). The height of the reaction ring (806) is adjusted by the lifting component (904) until it fits with the cleaning plate (906), so that the reaction ring (806) and the reaction base (812) can be cleaned. An arc ring (903) is installed on the outer wall of the liquid extraction tube (801) at the top of the second gear ring (907), and a plurality of nozzles (911) facing the cleaning plate (906) are installed on the outer wall of the liquid extraction tube (801).

3. According to claim 1, a ternary battery black powder wet recovery and copper removal equipment, Features: The stirring mechanism (5) comprises a first toothed ring (501) mounted on the top outer wall of the top plate (6) and a first gear (502) driven by a stirring motor, the first toothed ring (501) and the first gear (502) meshing with each other, an annular block (503) is fixedly connected to the inner wall of the first toothed ring (501), a plurality of spring telescopic rods (508) are embedded and mounted in the bottom outer wall of the annular block (503), an arc-shaped sealing block (504) is mounted on one end of the piston rod of the spring telescopic rod (508), a plurality of vertical columns (509) penetrating the arc-shaped sealing block (504) are mounted on the bottom outer wall of the annular block (503), a connecting plate (505) is mounted on the bottom outer wall of the vertical column (509), a vertical rod (506) is mounted between the bottom outer wall of the connecting plate (505) and the top outer wall of the partition (10), and a plurality of stirring rods are mounted on the outer wall of the vertical rod (506). (507), the bottom of the vertical rod (506) is a hollow structure, a sleeve (514) is fixedly connected to the inner wall of the vertical rod (506), an expansion head is installed on the outer wall of the bottom of the sleeve (514), a horizontal plate is installed on the outer wall of the sleeve (514) and the vertical rod (506), a scraper (510) that fits the inner wall of the processing tank (1) is installed on the outer wall of the horizontal plate, a convex column (511) and a pH meter are installed on the scraper (510), a plurality of inclined inclined rods (512) are installed on the bottom of the horizontal plate on the sleeve (514), and a plurality of branch rods (513) are installed on the outer wall of the inclined rod (512), a liquid separation mechanism (12) for discharging liquid in the processing chamber at the top of the processing tank (1) to the processing chamber at the bottom of the processing tank (1) is installed on the vertical rod (506), and a separation mechanism (14) for separating solids and liquids is installed on the bottom of the inner wall of the processing tank (1).

4. According to claim 3, a ternary battery black powder wet recovery and copper removal equipment, Features: The liquid separation mechanism (12) comprises a liquid collecting pipe (1201) installed in the inner wall at the bottom of the vertical rod (506), a second pump (1203) is installed at the bottom of the liquid collecting pipe (1201), a plurality of liquid suction pipes (1202) are installed on the liquid collecting pipe (1201), the liquid inlets of the liquid suction pipes (1202) are located in the processing chamber at the top of the processing tank (1), and filter screens are installed at the liquid inlets of the liquid suction pipes (1202).

5. According to claim 3, a ternary battery black powder wet recovery and copper removal equipment, Features: The separation mechanism (14) comprises two circular plates (1401) mounted on the bottom of the inner wall of the processing tank (1), wherein one of the circular plates (1401) is rotatably connected to the other circular plate (1401), a fan-shaped filter plate (1402) is mounted on the top outer wall of each circular plate (1401), an electromagnetic block (1403) is mounted on the top outer wall of the circular plate (1401), an iron block (1404) is wrapped on the outer wall of the electromagnetic block (1403), and the iron block (1404) is fixedly connected to the inclined rod (512).

6. According to claim 1, a ternary battery black powder wet recovery and copper removal equipment, Features: The liquid adding mechanism (3) comprises a mounting block (301) embedded and mounted on a top plate (6), a plurality of first storage tanks (302) embedded and mounted on the mounting block (301), a detachable tank cover (303) mounted on the top of the first storage tank (302), a filter screen (304) embedded and mounted on the tank cover (303), a connecting pipe (307) mounted on the bottom of the first storage tank (302), and the connecting pipe (307) is fixedly connected to the top of the processing tank (1) The first storage tank (302) is used to add liquid to the processing chamber via a connecting pipe (307), a first flow meter valve (305) is installed on the connecting pipe (307), an annular tube (309) is installed on the outer wall of the processing tank (1), an air charging tube (306) connected to the connecting pipe (307) is installed on the annular tube (309), an air valve (308) is installed on the air charging tube (306), and a fan (310) is installed at the pipe mouth of the annular tube (309).

7. According to claim 1, a ternary battery black powder wet recovery and copper removal equipment, Features: The detection mechanism (13) comprises a pressure sensor (1301) embedded in a stirring rod (507); a rubber sleeve (1303) is sleeved on the pressure sensor (1301); a spring (1302) is installed between the pressure sensor (1301) and the rubber sleeve (1303); and the pressure on the pressure sensor (1301) is changed by compressing the rubber sleeve (1303) and the spring (1302) through liquid.

8. According to claim 1, a ternary battery black powder wet recovery and copper removal equipment, Features: The material discharge mechanism (4) comprises a material discharge funnel (401) mounted on a top plate (6), the material discharge funnel (401) being inserted into an annular block (503), a bearing plate being mounted on the inner wall of the annular block (503), a crushing block (402) being mounted on the bearing plate, the crushing block (402) being located in the material discharge funnel (401), a heating plate (11) being embedded and mounted on the bottom of the inner wall of the processing tank (1), a processing window (2) connected to the processing chamber being mounted on the outer wall of the processing tank (1), supporting legs being mounted on the bottom outer wall of the processing tank (1), a bottom plate (7) being mounted on the bottom outer wall of the supporting legs, and a liquid discharge pipe (804) being mounted on the bottom of the outer wall of the reaction ring (806).

9. A method for wet recovery and copper removal of black powder from ternary batteries. Features: A ternary battery black powder wet recovery and copper removal device as described in any one of claims 1 to 8 is used, and the method comprises: Step 1: slurry preparation, wherein the raw material ternary black powder is fed into the processing chamber located at the top of the processing tank (1) through the feeding mechanism (4), and water is added through the liquid adding mechanism (3) and the stirring mechanism (5) to fully mix the black powder and water to form a uniform slurry; Step 2: intermediate leaching: adding a strong acid to the slurry through the liquid adding mechanism (3) and stirring the slurry through the stirring mechanism (5) to obtain intermediate leaching residue and intermediate leaching mother liquor, and separating the intermediate leaching mother liquor and the intermediate leaching residue through the liquid separation mechanism (12). The intermediate leaching residue remains in the treatment chamber located at the top of the treatment tank (1), and the intermediate leaching mother liquor is transported to the treatment chamber located at the bottom of the treatment tank (1); Step 3: Leaching, adding a strong acid and a reducing agent to the intermediate leaching residue through a liquid adding mechanism (3) to carry out acid leaching treatment, and obtaining carbon slag and acid leaching mother liquor after the acid leaching treatment. The acid leaching mother liquor can be recovered and used as the acid added in the intermediate leaching step; Step 4: removing copper, adjusting the pH of the leaching mother liquor to 3-5 through the liquid adding mechanism (3), heating it to a treatment chamber temperature greater than 50° C. through the heating plate (11), adding sodium thiosulfate, and fully reacting for 30-90 minutes, then performing solid-liquid separation through the separation mechanism (14) to obtain a copper removal mother liquor and copper slag. During the reaction, a sample is extracted through the reaction mechanism (8) to determine whether the sample contains copper to determine whether to continue the reaction; Step 5: slag washing, mixing the obtained copper slag with water in a certain proportion, and fully stirring for 30-90 minutes, and then filtering to obtain copper slag and washing water, wherein the mass ratio of copper slag to water is 0.1:1.

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