A purification device and process for noble metal production based on noble metal material recovery

Abstract

The application discloses a kind of based on noble metal material recovery's purification device and process for noble metal production, it is related to noble metal material recovery technical field, including acid leaching bin, end cap, baffle, push plate, extrusion cylinder;Rotary part;Spiral piece;Rotary unit is located in rotary part, and for when in rotary part along acid leaching bin axial movement, rotary part is rotated.This application, by push plate moves towards the direction of baffle, and make rotary unit trigger action, so that spiral piece rotates, when spiral piece rotates, can agitate noble metal material and acid leaching liquid, improve the contact efficiency of noble metal material and acid leaching liquid, in addition when resist frame is resisted to baffle surface, again along with the movement of push plate, spiral piece will be in constant compression state, spiral piece is in compression state and constantly rotates, to make spiral piece can scrape noble metal material surface, improve the contact probability of acid leaching liquid and noble metal material, to improve the acid leaching efficiency of acid leaching liquid to noble metal material.

Description

Technical Field

[0001] This invention relates to the field of precious metal material recycling technology, specifically to a purification device and process for precious metal production based on precious metal material recycling. Background Technology

[0002] Precious metals refer to eight metallic elements: gold, silver, and the platinum group metals (ruthenium, rhodium, palladium, osmium, iridium, and platinum). Their unique physical and chemical properties make them widely used in materials for electronics, electrical engineering, photosensitive materials, and catalysts, and they play a vital and irreplaceable role in modern science and industry, with applications in petrochemicals, aerospace, electronics, communication equipment, computers, and automobiles. Acid leaching is a mineral leaching process that uses an aqueous solution of inorganic acid as the leaching agent. It is one of the most commonly used leaching methods in chemical mineral processing. Sulfuric acid, hydrochloric acid, nitric acid, sulfurous acid, hydrofluoric acid, and aqua regia can all be used as leaching agents.

[0003] During acid leaching, precious metal materials are immersed in an acid leaching solution. The metal in the precious metal material reacts with the acid solution. However, because the precious metal material has a certain volume, the acid leaching solution cannot quickly penetrate into the interior of the precious metal material under normal pressure, resulting in a failure to react with the metal inside the precious metal material. This leads to a low acid leaching efficiency for the precious metal material. Summary of the Invention

[0004] The purpose of this invention is to provide a purification device and process for precious metal production based on precious metal material recycling, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A precious metal production purification apparatus based on precious metal material recycling, comprising: The acid leaching chamber is open at both ends and is equipped with end caps and baffles respectively. The push plate is coaxially and slidably engaged in the acid leaching chamber and is driven to move by the extrusion cylinder installed on the end cover; The rotating part is coaxially rotatably connected to the push plate and slidably engaged with the acid leaching tank; A spiral blade is disposed inside the acid leaching chamber, and one end is fixed to the end face of the rotating part; The contact frame is fixedly connected to the other end of the spiral blade; A rotating unit is provided on the rotating part and is used to drive the rotating part to rotate when the rotating part moves along the axial direction of the acid leaching tank.

[0006] Through the above technical solution, the push plate moves towards the baffle, triggering the rotating unit to rotate the spiral blade. The rotation of the spiral blade agitates the precious metal material and the acid leaching solution, and applies pressure to the acid leaching solution, increasing the speed at which the acid leaching solution penetrates the precious metal material and improving the contact efficiency between the precious metal material and the acid leaching solution. Furthermore, when the contact frame contacts the surface of the baffle, the spiral blade is continuously compressed as the push plate moves. This compression and continuous rotation of the spiral blade allows it to scrape the surface of the precious metal material, increasing the contact probability between the acid leaching solution and the precious metal material, thereby improving the acid leaching efficiency of the acid leaching solution on the precious metal material.

[0007] Furthermore, the acid leaching chamber is equipped with a drive cylinder, and the cylinder rod of the drive cylinder is connected to a baffle.

[0008] Through the above technical solution, the baffle is moved by the drive cylinder, so that the baffle can seal the opening of the acid leaching chamber. At the same time, when unloading, the drive cylinder can be activated to drive the baffle to move away from the acid leaching chamber, so that the opening of the acid leaching chamber can be opened, and then unloading can be carried out.

[0009] Furthermore, the rotating unit includes a rolling element that is embedded in the periphery of the rotating part and rotates freely, and the inner wall of the acid leaching chamber is provided with a rolling groove for the rolling element to engage and rotate freely.

[0010] With the above technical solution, when the pusher moves toward the baffle, the rolling element will roll in the rolling groove, and the rotating part can rotate.

[0011] Furthermore, the acid leaching chamber wall is provided with an acid inlet, the acid inlet is equipped with an acid replenishment chamber, and the acid replenishment chamber is provided with an acid replenishment unit.

[0012] With the above technical solution, as the pickling process proceeds, the acid content (equivalent to solute) in the pickling solution decreases, which leads to a decrease in pickling efficiency. Therefore, by setting up an acid replenishment unit, acid can be added into the pickling tank to improve pickling efficiency.

[0013] Furthermore, the acid replenishment unit includes a sealing cover installed at the top port of the acid replenishment chamber. The sealing cover has a cylindrical part that extends into the acid replenishment chamber. The cylindrical part has fluid channels and fine holes connected end to end from top to bottom. The periphery of the cylindrical part has a communication port that communicates with the fluid channels. A piston is coaxially and slidably installed in the acid replenishment chamber. The piston is slidably fitted around the periphery of the cylindrical part.

[0014] Through the above technical solution, gas is generated during the acid leaching process. The gas accumulates in the acid leaching chamber and exerts air pressure on the piston, causing the piston to move upward and squeeze the acid in the acid replenishment chamber. This allows the acid to enter the fluid channel through the connecting port and be slowly and continuously injected into the acid leaching chamber through the fine holes, thus replenishing the acid in the acid leaching solution.

[0015] Furthermore, the lower port of the acid replenishment chamber is fixedly connected to an inwardly folded annular flange, which is used to limit the downward movement of the piston.

[0016] The above technical solution ensures that the piston will not detach from the acid replenishment chamber.

[0017] Furthermore, the cylindrical portion is provided with a sealing component for closing the communication port.

[0018] By using the above technical solution, the connection port is sealed by the sealing component, so that when the pusher moves towards the baffle, the piston is prevented from moving upward due to the air pressure in the acid leaching chamber, which would cause the acid in the acid replenishment chamber to be injected into the acid leaching chamber, thereby causing the acid concentration in the early stage of acid leaching to be too high and affecting the acid leaching effect.

[0019] Furthermore, the sealing assembly includes a cylindrical plug coaxially rotatably connected to the sealing cap and having its lower end inserted into the fluid channel. The cylindrical plug engages within the fluid channel and rotates freely. A blind hole is provided at the lower end of the cylindrical plug, and a notch communicating with the blind hole is provided on its lower periphery. The notch is used in conjunction with the communication port. A hollow chamber is connected to the top of the sealing cap. A sliding plug is coaxially and slidably engaged within the inner cavity of the hollow chamber. The sliding plug is slidably fitted onto the end of the cylindrical plug that is inserted into the hollow chamber. A freely rotating ball is embedded in the sliding plug. A spiral groove is provided on the upper periphery of the cylindrical plug for engaging the ball and allowing it to rotate freely. The hollow chamber is connected to the inner cavity of the acid leaching chamber adjacent to the end cap via a pipeline.

[0020] With the above technical solution, when the pusher moves toward the baffle, the inner cavity on the left side of the acid leaching chamber is under negative pressure. Then, the air in the hollow chamber is evacuated through the pipeline. After the air in the hollow chamber enters the acid leaching chamber, the sliding plug will move upward, causing the ball to roll in the spiral groove and drive the cylindrical plug to rotate. This causes the notch of the cylindrical plug to rotate to a state of communication with the connecting port, so that the acid in the acid replenishment chamber enters the fluid channel through the connecting port, the notch, and the blind hole.

[0021] Furthermore, an elastic element is installed inside the hollow cavity, which imparts potential energy to the sliding plug to move downwards.

[0022] Through the above technical solution, the elastic element has a downward elastic resisting force on the sliding plug, so that in the early stage of the push plate movement, the air pressure in the acid leaching chamber is less than the elastic resisting force of the elastic element on the sliding plug, thus preventing the sliding plug from moving upward in the early stage of the push plate movement.

[0023] A precious metal production purification process based on precious metal material recycling, applied to the purification apparatus described above, includes: The acid leaching solution and precious metal materials are put into the acid leaching tank. The acid leaching solution will penetrate into the surface and interior of the precious metal materials and react with the metal on the precious metal materials. During the acid leaching process, the pusher plate moves towards the baffle in the acid leaching chamber, so that the spiral blades and the rotating part move synchronously. During the movement, the rotating unit triggers an action and drives the rotating part to rotate. When the rotating part rotates, it synchronously drives the spiral blade to rotate, causing the spiral blade to stir the precious metal material and the acid leaching solution in the acid leaching chamber. This causes the space on the side of the acid leaching chamber used to store the acid leaching solution to gradually decrease, thereby increasing the pressure on the acid leaching solution and enabling the acid leaching solution to quickly penetrate into the precious metal material. As the pusher moves horizontally, when the contact frame comes into contact with the baffle surface, the spiral blade will gradually be compressed, causing the precious metal material inside the spiral blade to be squeezed by the spiral blade surface, so that the surface of the precious metal material is subjected to friction from the spiral blade surface, thereby reducing the volume of the precious metal material.

[0024] The above technical solutions increase the contact probability between the acid leaching solution and the precious metal material, thereby improving the acid leaching efficiency of the acid leaching solution on the precious metal material.

[0025] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the push plate moves toward the baffle, triggering the rotating unit to rotate the spiral blade. When the spiral blade rotates, it agitates the precious metal material and the acid leaching solution, and applies pressure to the acid leaching solution, thereby increasing the speed at which the acid leaching solution penetrates into the precious metal material and improving the contact efficiency between the precious metal material and the acid leaching solution. In addition, when the contact frame contacts the surface of the baffle, the spiral blade will be in a continuously compressed state as the push plate moves. The spiral blade is in a compressed state and rotates continuously, which allows the spiral blade to scrape the surface of the precious metal material, increasing the contact probability between the acid leaching solution and the precious metal material, and thus improving the acid leaching efficiency of the acid leaching solution on the precious metal material. 2. In this invention, as the acid leaching proceeds, the acid content (equivalent to solute) in the leaching solution decreases, resulting in a decrease in leaching efficiency. Therefore, by setting up an acid replenishment unit, acid can be added into the leaching chamber to improve leaching efficiency. During the leaching process, gas is generated, which accumulates in the leaching chamber and generates a gas pressure thrust on the piston, causing the piston to move upward and squeeze the acid in the acid replenishment chamber. This allows the acid to enter the fluid channel through the connecting port and be slowly and continuously injected into the leaching chamber through the fine holes, thereby replenishing the acid in the leaching solution. 3. In this invention, the connecting port is sealed by a sealing component, so that when the push plate moves toward the baffle, it prevents the piston from being affected by the air pressure in the acid leaching chamber and moving upward, causing the acid in the acid replenishment chamber to be injected into the acid leaching chamber, which would lead to an excessively high acid concentration in the early stage of acid leaching and affect the acid leaching effect. When the push plate moves toward the baffle, the inner cavity on the left side of the acid leaching chamber is in a negative pressure state, and then the hollow chamber is evacuated through the pipeline. After the air in the hollow chamber enters the acid leaching chamber, the sliding plug will move upward, causing the ball to roll in the spiral groove and drive the cylindrical plug to rotate, so that the notch of the cylindrical plug rotates to a state of communication with the connecting port, allowing the acid in the acid replenishment chamber to enter the fluid channel through the connecting port, the notch, and the blind hole. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of a purification device for precious metal production based on precious metal material recycling according to the present invention. Figure 2 for Figure 1 A schematic diagram showing the positional relationship of the middle section after it has been cut open. Figure 3 This is a schematic diagram showing the positional relationship of the acid replenishment tank, sealing cover, and hollow tank after assembly in this invention. Figure 4 for Figure 3 A schematic diagram showing the positional relationship of the middle section after it has been cut open. Figure 5 for Figure 4 Enlarged schematic diagram of the local structure at point A; Figure 6 for Figure 3 Schematic diagram of the explosive decomposition of the medium structure; Figure 7 This is a schematic diagram of the acid leaching tank in this invention; Figure 8 This is a schematic diagram of the cylindrical plug in this invention.

[0027] The following are the annotations for each item in the figure: 1. Extrusion cylinder; 2. End cap; 3. Acid leaching chamber; 4. Drive cylinder; 5. Baffle; 6. Acid replenishment chamber; 7. Sealing cap; 8. Hollow chamber; 9. Pipeline; 10. Push plate; 11. Rolling element; 12. Rotating part; 13. Spiral blade; 14. Contact frame; 15. Piston; 16. Cylindrical part; 17. Connecting port; 18. Fluid channel; 19. Fine hole; 20. Cylindrical plug; 21. Sliding plug; 22. Ball bearing; 23. Spiral groove; 24. Notch; 25. Rolling groove; 26. Blind hole. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-8 This invention provides a technical solution: a purification device for precious metal production based on precious metal material recycling, comprising an acid leaching chamber 3 with open ends, an end cap 2 fixedly installed at one end of the acid leaching chamber 3, and two drive cylinders 4 horizontally installed on the periphery of the side of the acid leaching chamber 3 away from the end cap 2. The two drive cylinders 4 are symmetrically arranged along the axial direction of the acid leaching chamber 3, and the cylinder rods of the other two drive cylinders 4 are connected to a baffle 5. When the cylinder rods of the drive cylinders 4 shorten, they will drive the baffle 5 to move towards the acid leaching chamber 3, so that the baffle 5 can close the end of the acid leaching chamber 3 away from the end cap 2. Furthermore, an acid inlet can be installed on the baffle 5. During acid leaching, the drive cylinder 4 is first activated, and the cylinder rod of the drive cylinder 4 extends, causing the baffle 5 to move away from the acid leaching chamber 3, thereby opening the opening of the acid leaching chamber 3. Then, the precious metal material is put into the acid leaching chamber 3 through the open opening. Then, the drive cylinder 4 is activated again, and the cylinder rod of the drive cylinder 4 shortens, so that the baffle 5 can move towards the acid leaching chamber 3 and close the opening of the acid leaching chamber 3. Then, the acid leaching solution is transported to the acid inlet by an external delivery pump and enters the acid leaching chamber 3 for storage. When the acid leaching solution comes into contact with the precious metal material, it will produce an acid leaching reaction with the precious metal material, thereby carrying out acid leaching. A push plate 10 is coaxially and slidably installed inside the acid leaching chamber 3. The push plate 10 can slide freely inside the acid leaching chamber 3. In addition, the push plate 10 divides the acid leaching chamber 3 into a first chamber and a second chamber from left to right (see reference). Figure 2A compression cylinder 1 is mounted on the surface of end cap 2. The cylinder rod of the compression cylinder 1 passes through end cap 2 and is driven and connected to push plate 10. A rotating part 12 is coaxially rotatably connected to one end face of push plate 10 corresponding to the second cavity. The rotating part 12 is coaxially and slidably engaged in the acid leaching chamber 3, and the rotating part 12 is located in the second cavity. A spiral blade 13 is fixedly connected to the side of the rotating part 12 facing away from push plate 10. The nominal diameter of the spiral blade 13 matches the inner diameter of the acid leaching chamber 3. In addition, the axial direction of the spiral blade 13 is coaxial with the axial direction of the acid leaching chamber 3. A contact frame 14 is fixedly connected to the end of the spiral blade 13 away from the rotating part 12. The contact frame 14 is coaxially and slidably engaged in the acid leaching chamber 3. The periphery of the rotating part 12 rotates... Two rolling elements 11 are dynamically embedded in the rotating part 12. The two rolling elements 11 are symmetrically arranged along the axial direction of the rotating part 12. In addition, the inner wall of the acid leaching chamber 3 is provided with a rolling groove 25 for the rolling elements 11 to engage and rotate freely. When the extrusion cylinder 1 drives the push plate 10 to move towards the baffle 5, the push plate 10 drives the rotating part 12 to move. When the rotating part 12 moves, the rolling elements 11 will roll in the rolling groove 25, thereby causing the rotating part 12 to rotate along the axial direction of the acid leaching chamber 3. When the push plate 10 moves, the contact frame 14 will gradually approach the baffle 5. When the contact frame 14 contacts the surface of the baffle 5, as the push plate 10 continues to move, the spiral blade 13 will be in a compressed state. The acid leaching tank 3 has an acid inlet on its wall. An acid replenishment tank 6 is installed at the acid inlet. A sealing cover 7 is installed at the top of the acid replenishment tank 6. A cylindrical part 16 extending into the acid replenishment tank 6 is fixedly inserted through the sealing cover 7. A fluid channel 18 and a fine hole 19 connected end to end are opened in the cylindrical part 16 from top to bottom. A communication port 17 communicating with the fluid channel 18 is opened around the periphery of the cylindrical part 16. A piston 15 is coaxially and slidably engaged in the acid replenishment tank 6. The piston 15 is slidably fitted around the periphery of the cylindrical part 16. An inwardly turned annular flange is fixedly connected to the lower end of the acid replenishment tank 6. The annular flange is used to limit the downward movement of the piston 15 to prevent the piston 15 from coming out of the acid replenishment tank 6. A cylindrical plug 20 is coaxially rotatably connected to the sealing cap 7. The lower end of the cylindrical plug 20 penetrates into the fluid channel 18. The cylindrical plug 20 is engaged within the fluid channel 18 and can rotate freely. A blind hole 26 is provided at the lower end of the cylindrical plug 20, and a notch 24 communicating with the blind hole 26 is provided on the lower periphery. The notch 24 is used in conjunction with the connecting port 17. A hollow chamber 8 is connected to the top of the sealing cap 7. A sliding plug 21 is coaxially slidably engaged within the cavity of the hollow chamber 8. The sliding plug 21 is slidably fitted onto the end of the cylindrical plug 20 that penetrates into the hollow chamber 8. There is a freely rotating ball 22. The upper periphery of the cylindrical plug 20 is provided with a spiral groove 23 for the ball 22 to engage and rotate freely. The hollow chamber 8 is connected to the inner cavity of the acid leaching chamber 3 near the end cap 2 through the pipe 9. An elastic element (not shown in the figure) is installed in the inner cavity of the hollow chamber 8. The elastic element gives the sliding plug 21 the potential energy to move downward. In this embodiment, the elastic element can be set as a spring. In addition, in this embodiment, the periphery of the sliding plug 21 can be set to be keyed to the inner wall of the hollow chamber 8, so that the sliding plug 21 will not rotate on its own in the hollow chamber 8.

[0030] Working principle of the invention: During acid leaching, the drive cylinder 4 is first activated, and the cylinder rod of the drive cylinder 4 extends, causing the baffle 5 to move away from the acid leaching chamber 3, thereby opening the opening of the acid leaching chamber 3. Then, the precious metal material is put into the acid leaching chamber 3 through the open opening. Then, the drive cylinder 4 is activated again, and the cylinder rod of the drive cylinder 4 shortens, so that the baffle 5 can move towards the acid leaching chamber 3 and close the opening of the acid leaching chamber 3. Then, the acid leaching solution is transported to the acid inlet by an external delivery pump and enters the acid leaching chamber 3 for storage. When the acid leaching solution comes into contact with the precious metal material, it will produce an acid leaching reaction with the precious metal material, thereby carrying out acid leaching. The extrusion cylinder 1 is activated, and its cylinder rod extends slowly and continuously, driving the push plate 10 to move towards the baffle 5 within the acid leaching chamber 3. This causes the push plate 10 to move the rotating part 12. As the rotating part 12 moves, the rolling element 11 rolls within the rolling groove 25, resulting in a rotational motion of the rotating part 12 along the axial direction of the acid leaching chamber 3. As the push plate 10 moves, the contact frame 14 gradually approaches the baffle 5. When the contact frame 14 contacts the surface of the baffle 5, the spiral blade 13 is compressed as the push plate 10 continues to move. When the plate 13 rotates, it can agitate the precious metal material and the acid leaching solution, and exert pressure on the acid leaching solution, thereby increasing the speed at which the acid leaching solution penetrates into the precious metal material and improving the contact efficiency between the precious metal material and the acid leaching solution. In addition, when the contact frame 14 contacts the surface of the baffle 5, the spiral plate 13 will be in a state of continuous compression as the push plate 10 moves. The spiral plate 13 is in a state of compression and rotates continuously, which allows the spiral plate 13 to scrape the surface of the precious metal material, increasing the contact probability between the acid leaching solution and the precious metal material, thereby improving the acid leaching efficiency of the acid leaching solution on the precious metal material. During the initial process of the push plate 10 moving towards the baffle 5, the volume of the first cavity increases, allowing air from the hollow chamber 8 to enter the first cavity. At this time, the elastic force of the elastic element against the sliding plug 21 is greater than the negative pressure in the first cavity, so the sliding plug 21 will not move, and consequently the cylindrical plug 20 will not rotate. At this time, the notch 24 of the cylindrical plug 20 is misaligned with the connecting port 17, thus preventing the acid in the acid replenishment chamber 6 from entering the fluid channel 18 through the connecting port 17. This prevents the acid from entering the acid leaching chamber 3 during the early stage of acid leaching, which would result in an excessive concentration of acid leaching solution and affect the acid leaching process. Then, the squeezing cylinder 1 stops operating, so that the push plate 10, the rotating part 12, and the spiral blade 13 are in a stable state. At this time, the acid leaching solution in the second cavity rapidly penetrates into the precious metal material under a certain pressure and reacts with the precious metal material in an acid leaching reaction. During the acid leaching process, gases are typically generated. These gases accumulate in the second chamber, increasing the pressure within it. Simultaneously, the negative pressure in the first chamber exceeds the elastic resistance of the elastic element against the sliding plug 21. This causes the sliding plug 21 to overcome the elastic resistance and move upwards. As it moves upwards, the ball bearing 22 rolls within the spiral groove 23, driving the cylindrical plug 20 to rotate. This causes the notch 24 of the cylindrical plug 20 to rotate until it is in communication with the connecting port 17. At the same time, the pressure in the second chamber also drives... The piston 15 moves upward against the acid pressure in the acid replenishment chamber 6, and squeezes the acid to the connecting port 17. Then, it enters the fine hole 19 through the notch 24, blind hole 26, and fluid channel 18 in sequence, and is finally injected into the acid leaching chamber 3 through the fine hole 19. This replenishes the acid in the acid leaching chamber 3 with solute, increases the concentration of acid in the acid leaching chamber, and prevents the acid leaching efficiency from being affected by the decrease in the concentration of acid in the acid leaching chamber. As the amount of gas increases, the amount of acid injected also increases, thereby realizing the automatic replenishment of acid solute into the acid leaching chamber 3.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A purification device for precious metal production based on precious metal material recycling, characterized in that, include: The acid leaching chamber (3) is open at both ends and is equipped with end caps (2) and baffles (5) respectively. The push plate (10) is coaxially and slidably engaged in the acid leaching chamber (3), and is driven to move by the extrusion cylinder (1) installed on the end cover (2); The rotating part (12) is coaxially rotatably connected to the push plate (10) and slidably engaged with the acid leaching tank (3). Spiral blade (13) is disposed in the acid leaching chamber (3), and one end is fixed to the end face of the rotating part (12); The contact frame (14) is fixed to the other end of the spiral plate (13); A rotating unit is provided on the rotating part (12) and is used to drive the rotating part (12) to rotate when the rotating part (12) moves along the axial direction of the acid leaching tank (3).

2. The precious metal production purification device based on precious metal material recycling according to claim 1, characterized in that, The acid leaching chamber (3) is equipped with a drive cylinder (4), and the cylinder rod of the drive cylinder (4) is connected to the baffle (5).

3. The precious metal production purification device based on precious metal material recycling according to claim 1, characterized in that, The rotating unit includes a rolling element (11) that is embedded in the periphery of the rotating part (12) and rotates freely. The inner wall of the acid leaching tank (3) is provided with a rolling groove (25) for the rolling element (11) to engage and rotate freely.

4. The precious metal production purification device based on precious metal material recycling according to claim 1, characterized in that, The acid leaching tank (3) has an acid inlet on its wall, and an acid replenishment tank (6) is installed in the acid inlet. The acid replenishment tank (6) is equipped with an acid replenishment unit.

5. The precious metal production purification device based on precious metal material recycling according to claim 4, characterized in that, The acid replenishment unit includes a sealing cover (7) installed at the top port of the acid replenishment chamber (6). The sealing cover (7) is fixedly provided with a cylindrical part (16) extending into the acid replenishment chamber (6). The cylindrical part (16) has fluid channels (18) and fine holes (19) connected end to end from top to bottom. The periphery of the cylindrical part (16) has a communication port (17) that communicates with the fluid channels (18). A piston (15) is coaxially and slidably installed in the acid replenishment chamber (6). The piston (15) is slidably fitted around the periphery of the cylindrical part (16).

6. The precious metal production purification apparatus based on precious metal material recycling according to claim 5, characterized in that, The lower port of the acid replenishment chamber (6) is fixed with an inwardly turned annular flange, which is used to limit the downward movement of the piston (15).

7. The precious metal production purification device based on precious metal material recycling according to claim 5, characterized in that, The cylindrical part (16) is provided with a sealing component for closing the communication port (17).

8. The precious metal production purification apparatus based on precious metal material recycling according to claim 7, characterized in that, The sealing assembly includes a cylindrical plug (20) coaxially rotatably connected to the sealing cap (7) and whose lower end extends into the fluid channel (18). The cylindrical plug (20) is engaged in the fluid channel (18) and can rotate freely. The lower end of the cylindrical plug (20) is provided with a blind hole (26), and the lower periphery is provided with a notch (24) communicating with the blind hole (26). The notch (24) is used in conjunction with the connecting port (17). The top of the sealing cap (7) is connected to a hollow chamber (8). The hollow chamber (8) is coaxially and slidably fitted with a sliding plug (21). The sliding plug (21) is slidably fitted onto one end of the cylindrical plug (20) that penetrates into the hollow chamber (8). The sliding plug (21) is fitted with a freely rotating ball (22). The cylindrical plug (20) has a spiral groove (23) on its upper periphery for the ball (22) to engage and rotate freely. The hollow chamber (8) is connected to the inner cavity of the acid leaching chamber (3) adjacent to the end cap (2) through a pipe (9).

9. The precious metal production purification apparatus based on precious metal material recycling according to claim 8, characterized in that, The hollow chamber (8) is equipped with an elastic element, which imparts potential energy to the sliding plug (21) to move downward.

10. A purification process for precious metal production based on precious metal material recycling, applied to the purification apparatus according to any one of claims 1 to 9, characterized in that, include: The acid leaching solution and precious metal material are put into the acid leaching tank (3). The acid leaching solution will penetrate into the surface and interior of the precious metal material and react with the metal on the precious metal material. During the acid leaching process, the pusher plate (10) moves towards the baffle (5) in the acid leaching chamber (3), so that the spiral blade (13) and the rotating part (12) move synchronously. During the movement, the rotating unit triggers an action and drives the rotating part (12) to rotate. When the rotating part (12) rotates, it synchronously drives the spiral blade (13) to rotate, so that the spiral blade (13) stirs the precious metal material and the acid leaching solution in the acid leaching chamber (3), and the space on one side of the cavity of the acid leaching chamber (3) used to store the acid leaching solution gradually decreases, thereby increasing the pressure on the acid leaching solution, and the acid leaching solution can quickly penetrate into the precious metal material; As the push plate (10) moves horizontally, when the contact frame (14) contacts the surface of the baffle (5), the spiral blade (13) will gradually be compressed, so that the precious metal material inside the spiral blade (13) will be squeezed by the surface of the spiral blade (13), so that the surface of the precious metal material is rubbed by the surface of the spiral blade (13), thereby reducing the volume of the precious metal material.

Images