Precious metal platinum refining and purifying device

Abstract

The invention relates to a precious metal platinum refining and purifying device, which belongs to the technical field of precious metal recovery, and comprises a box body, two spray pipes are arranged at the top end of the box body, a circular screen drum is arranged in the box body, meshes are distributed on the circular screen drum, a plurality of strip-shaped plates are fixedly arranged on the outer circumferential surface of the circular screen drum, and the lower part of the box body is in a semi-cylindrical shape; the outer edge of the strip-shaped plate is attached to the inner wall of the semi-cylindrical box body, a bin door is arranged on the lower portion of the box body, a side bin door is arranged on one side face of the box body, the pulverizer, the inclined elevator and the stirring reaction kettle are located below the side bin door, and an outlet in the bottom of the stirring reaction kettle is connected with the upper bin opening through a conveying pipe. The precious metal platinum on the circuit board is refined, purified and recycled by adopting a chemical reduction method, the continuity is high, the efficiency is high, the safety is high, and meanwhile, many steps possibly wasting raw materials of the circuit board are avoided.

Description

Technical Field

[0001] The invention relates to a device for refining and purifying precious metal platinum, and belongs to the technical field of precious metal recovery. Background Art

[0002] Circuit boards are the core components of electronic products. They are found in mobile phones, computers, audio equipment, LEDs and other equipment. They are of various types and in huge quantities. With the rapid development of the electronic information industry, while its production volume continues to increase, the amount of scrapped circuit boards is also increasing day by day. The components on scrapped circuit boards contain precious metals such as gold, silver, platinum and palladium.

[0003] Among them, platinum is a silvery white metal with luster, soft texture, good ductility and forgeability. It is indispensable in many modern industries and high-tech fields and is an important strategic resource. Its supply has a significant impact on the development of related industries. It is highly valued in the fields of electronics, medical treatment and jewelry.

[0004] The refining, purification and recovery of precious metal platinum is particularly important. There are many methods for recovery, including chemical reduction, electrolytic recovery, pyrometallurgy, etc. The main steps of chemical reduction include: crushing, adding a reducing agent to react in a reactor, adding a precipitant, filtering and washing after the precipitation is formed. At present, there is a lack of coherent equipment for recovering precious metal platinum using chemical reduction, which will greatly affect the recovery efficiency and safety of operation, and it is also easy to waste circuit board raw materials. Summary of the invention The purpose of the present invention is to solve the technical problems of poor continuity and low recovery efficiency of precious metal platinum recovered by chemical reduction method in the prior art, and to provide a precious metal platinum refining and purification device.

[0005] The present invention is achieved through the following technical solutions: That is, a precious metal platinum refining and purification device, comprising a box body, an upper warehouse opening is arranged at the top of the box body, two spray pipes are also arranged at the top of the box body, the two spray pipes are connected to the liquid inlet pipe, a row of nozzles are installed at the lower end of the spray pipe, the liquid inlet pipe is externally connected to a cleaning agent, a rotatable circular screen drum is installed in the box body, a motor is installed at one end outside the box body, the main shaft of the motor is connected to the rotating shaft located in the circular screen drum through a coupling, the end of the rotating shaft is connected to a bearing seat fixedly installed on the other end of the box body, the circular screen drum is covered with meshes, a plurality of strip plates are fixedly arranged on the outer circumference of the circular screen drum, the lower part of the box body is semi-cylindrical, the outer edge of the strip plate is in contact with the inner wall of the semi-cylindrical box body, a warehouse door is arranged at the lower part of the box body, and a side warehouse door is arranged on one side of the box body; It also includes a crusher, an inclined elevator and a stirring reactor located below the side warehouse door, and the outlet at the bottom of the stirring reactor is connected to the upper warehouse port through a conveying pipe.

[0006] The circuit board raw materials are preliminarily cut and crushed to ensure that the circuit board can pass through the upper warehouse opening and enter the box body. The motor drives the circular screen drum to rotate. The circuit board fragments are constantly turned over under the action of the circular screen drum and the strip plate. The cleaning agent is sprayed down by the nozzle through the liquid inlet pipe and the spray pipe to clean and pre-treat the circuit board fragments, which is helpful for subsequent chemical reactions. The circuit board fragments after cleaning and pre-treatment enter the crusher through the side warehouse door for crushing. After the circuit board fragments are crushed into powder, they are lifted into the stirred reactor by the inclined elevator. The stirred reactor is added with the corresponding solution and precipitant to form precipitated particles of precious metal platinum. The precipitated particles enter the box body through the conveying pipe for spray washing. The circular screen drum is constantly rotated to turn up the precipitated particles, which has a good washing effect on the precipitated particles. The present invention adopts the chemical reduction method to refine, purify and recover the precious metal platinum on the circuit board, which has strong consistency, high efficiency and high safety, and avoids many steps that may waste circuit board raw materials.

[0007] Further preferably, the doors at the bottom of the box body are two lower doors, which are opened and closed by lower oil cylinders installed at the bottom of the box body. The oil cylinders are used to automatically open and close the lower doors, which is easy to operate.

[0008] Preferably, the bottom of the box has a double-layer structure, the inner layer is a filter screen, and the outer layer is composed of two lower doors. When cleaning and pre-treating the circuit board fragments, the lower door is in an open state, and the cleaning liquid falls through the filter screen; when washing the precipitated particles, the lower door is in a closed state, and after washing is completed, the lower door is opened, and the precipitated particles fall through the filter screen for recovery.

[0009] Further preferably, a side opening of a horizontal strip is provided on one side of the box body, slide grooves are provided on both sides of the side opening, two sliders are fixedly provided on the inner side of the side door, the sliders are located in the slide grooves, and the side door is connected to a side oil cylinder provided on the same side of the box body. The oil cylinder is used to realize automatic opening and closing of the side opening, which is easy to operate.

[0010] Further preferably, a horizontal screw conveyor is provided directly below the side bin opening, a limit heightening plate is provided on the upper part of the shell of the horizontal screw conveyor, and the crusher is located directly below the outlet of the horizontal screw conveyor. The width of the side bin opening in the present invention is relatively large, and the use of a horizontal screw conveyor can achieve centralized discharge, and the step of the circuit board raw material entering the crusher from the box body can be smoother, reducing the waste of raw materials.

[0011] Compared with the prior art, the present invention has the following beneficial effects: The circuit board raw materials are preliminarily cut and crushed to ensure that the circuit board can pass through the upper warehouse opening and enter the box body. The motor drives the circular screen drum to rotate. The circuit board fragments are constantly turned over under the action of the circular screen drum and the strip plate. The cleaning agent is sprayed down by the nozzle through the liquid inlet pipe and the spray pipe to clean and pre-treat the circuit board fragments, which is helpful for subsequent chemical reactions. The circuit board fragments after cleaning and pre-treatment enter the crusher through the side warehouse door for crushing. After the circuit board fragments are crushed into powder, they are lifted into the stirred reactor by the inclined elevator. The stirred reactor is added with the corresponding solution and precipitant to form precipitated particles of precious metal platinum. The precipitated particles enter the box body through the conveying pipe for spray washing. The circular screen drum is constantly rotated to turn up the precipitated particles, which has a good washing effect on the precipitated particles. The present invention adopts the chemical reduction method to refine, purify and recover the precious metal platinum on the circuit board, which has strong consistency, high efficiency and high safety, and avoids many steps that may waste circuit board raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of a first viewing angle of a specific implementation method of the present invention.

[0014] Figure 2 It is a structural schematic diagram of a second viewing angle of a specific implementation method of the present invention.

[0015] Figure 3 It is a structural schematic diagram of a third viewing angle of a specific embodiment of the present invention.

[0016] Figure 4 It is a structural schematic diagram of a fourth viewing angle (partial cross-section) of a specific embodiment of the present invention.

[0017] In the figure: 1. bracket; 2. box body; 3. upper compartment opening; 4. liquid inlet pipe; 5. spray pipe; 6. nozzle; 7. side compartment opening; 8. chute; 9. side compartment door; 10. side oil cylinder; 11. conveying pipe; 12. motor; 13. horizontal screw conveyor; 14. limit heightening plate; 15. recovery box; 16. crusher; 17. inclined elevator; 18. stirring reactor; 19. lower compartment door; 20. lower oil cylinder; 21. round screen drum; 22. strip plate; 23. rotating shaft. DETAILED DESCRIPTION

[0018] The specific implementation modes of the present invention are further described in detail below with reference to the accompanying drawings.

[0019] like Figures 1 to 4 The device for refining and purifying precious metal platinum shown in the figure comprises a box body 2, the box body 2 is supported on the ground by a bracket 1, a recovery box 15 is arranged directly below the box body 2, an upper warehouse opening 3 is arranged at the top of the box body 2, two spray pipes 5 are also arranged at the top of the box body 2, the two spray pipes 5 are connected to a liquid inlet pipe 4, a row of nozzles 6 are installed at the lower end of the spray pipe 5, the liquid inlet pipe 4 is externally connected to a cleaning agent, a rotatable circular screen drum 21 is installed in the box body 2, both ends of the circular screen drum 21 are open, a dryer is arranged in the circular screen drum 21, and the dryer is installed in the box body 2. 2, a motor 12 is installed at one end of the outer side of the box body 2, the main shaft of the motor 12 is connected to the rotating shaft 23 located in the circular screen cylinder 21 through a coupling, and the end of the rotating shaft 23 is connected to the bearing seat fixedly installed on the other end of the box body 2, the circular screen cylinder 21 is covered with meshes, and a plurality of strip plates 22 are fixedly arranged on the outer circumferential surface of the circular screen cylinder 21, the lower part of the box body 2 is semi-cylindrical, and the outer edge of the strip plate 22 is in contact with the inner wall of the semi-cylindrical box body 2, the lower part of the box body 2 is provided with a warehouse door, and a side warehouse door 9 is provided on one side of the box body 2; The invention also includes a crusher 16 , an inclined elevator 17 and a stirring reactor 18 located below the side warehouse door 9 . The outlet at the bottom of the stirring reactor 18 is connected to the upper warehouse port 3 through a conveying pipe 11 .

[0020] The circuit board raw materials are preliminarily cut and crushed to ensure that the circuit board can pass through the upper warehouse opening 3 and enter the box body 2. The motor 12 drives the circular screen drum 21 to rotate. The circuit board fragments are constantly rotated by the circular screen drum 21 and the strip plate 22. The cleaning agent is sprayed by the nozzle 6 through the liquid inlet pipe 4 and the spray pipe 5. After the nozzle 6 is closed, the circuit board fragments are dried by a dryer. The circuit board fragments are cleaned and pretreated, which is helpful for subsequent chemical reactions. The cleaned and pretreated circuit board fragments enter the crusher 16 through the side warehouse door 9 for crushing. After the circuit board fragments are crushed into powder, they are lifted by the inclined elevator 17 into the stirred reactor 18. The corresponding solution and precipitant are added to the stirred reactor 18 to form precipitated particles of precious metal platinum. The precipitated particles enter the box body 2 through the conveying pipe 11 for spray washing. After washing, the precipitated particles are dried by a dryer. The circular screen drum 21 rotates continuously to turn up the precipitated particles, which has a good washing and drying effect on the precipitated particles. The present invention adopts a chemical reduction method to refine, purify and recover the precious metal platinum on the circuit board, which has strong consistency, high efficiency and high safety, and avoids many steps that may waste circuit board raw materials.

[0021] Among them, the door at the bottom of the box body 2 is two lower doors 19, and the lower doors 19 are opened and closed by the lower oil cylinder 20 installed at the bottom of the box body 2. The bottom of the box body 2 is a double-layer structure, the inner layer is a filter screen, and the outer layer is composed of two lower doors 19. The inner filter screen plus the lower doors 19 are equal to the wall thickness of the box body 2, and the inner and outer walls are flush. When cleaning and pre-processing the circuit board fragments, the lower door 19 is in an open state, and the cleaning liquid falls through the filter screen; when washing the precipitated particles, the lower door 19 is in a closed state. After washing, the lower door 19 is opened, and the precipitated particles fall through the filter screen for recovery. The lower door 19 is automatically opened and closed by the oil cylinder, which is easy to operate.

[0022] Among them, a side opening 7 in the shape of a horizontal strip is provided on one side of the box body 2, and slide grooves 8 are provided on both sides of the side opening 7. Two sliders are fixedly provided on the inner side of the side door 9, and the sliders are located in the slide grooves 8. The side door 9 is connected to the side oil cylinder 10 provided on the same side of the box body 2. A horizontal screw conveyor 13 is provided directly below the side opening 7, and a limit heightening plate 14 is provided on the upper part of the shell of the horizontal screw conveyor 13. The crusher 16 is located directly below the outlet of the horizontal screw conveyor 13. The width of the side opening 7 in the present invention is relatively large, and the horizontal screw conveyor 13 can be used to realize centralized discharging. The step of the circuit board raw materials entering the crusher 16 from the box body 2 can be smoother, reducing the waste of raw materials. The oil cylinder is used to realize the automatic opening and closing of the side opening 7, which is easy to operate.

[0023] Working principle: The circuit board raw materials are preliminarily cut and crushed to ensure that the circuit board can pass through the upper warehouse opening 3 and enter the box body 2. The motor 12 drives the circular screen drum 21 to rotate. The circuit board fragments are constantly rotated by the circular screen drum 21 and the strip plate 22. The cleaning agent is sprayed from the nozzle 6 through the liquid inlet pipe 4 and the spray pipe 5 to clean, pretreat and dry the circuit board fragments, which is helpful for subsequent chemical reactions. The cleaned and pretreated circuit board fragments enter the crusher 16 through the side warehouse door 9 for crushing. After the circuit board fragments are crushed into powder, they are lifted by the inclined elevator 17 into the stirred reactor 18. The corresponding solution and precipitant are added to the stirred reactor 18 to form precipitated particles of precious metal platinum. The precipitated particles enter the box body 2 through the conveying pipe 11 for spray washing. The circular screen drum 21 rotates continuously to turn up the precipitated particles, which has a good effect on washing and drying the precipitated particles.

[0024] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0025] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0026] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A precious metal platinum refining and purification device, characterized in that: The invention comprises a box body (2), an upper storage opening (3) is provided at the top of the box body (2), two spray pipes (5) are also provided at the top of the box body (2), the two spray pipes (5) are connected to a liquid inlet pipe (4), a row of nozzles (6) are installed at the lower end of the spray pipe (5), the liquid inlet pipe (4) is externally connected to a cleaning agent, a rotatable circular screen drum (21) is installed in the box body (2), a motor (12) is installed at one end outside the box body (2), and the main shaft of the motor (12) is connected to the circular screen drum (21) through a coupling. 1), the end of the rotating shaft (23) is connected to a bearing seat fixedly installed on the other end of the box body (2), the circular screen drum (21) is covered with meshes, a plurality of strip plates (22) are fixedly provided on the outer circumferential surface of the circular screen drum (21), the lower part of the box body (2) is semi-cylindrical, the outer edge of the strip plate (22) is in contact with the inner wall of the semi-cylindrical box body (2), the lower part of the box body (2) is provided with a warehouse door, and a side warehouse door (9) is provided on one side of the box body (2); It also includes a crusher (16), an inclined elevator (17) and a stirring reactor (18) located below the side warehouse door (9), and the outlet at the bottom of the stirring reactor (18) is connected to the upper warehouse opening (3) through a conveying pipe (11).

2. A precious metal platinum refining and purification device according to claim 1, characterized in that: The doors at the bottom of the box body (2) are two lower doors (19), and the lower doors (19) are opened and closed by means of a lower oil cylinder (20) installed at the bottom of the box body (2).

3. A precious metal platinum refining and purification device according to claim 2, characterized in that: The bottom of the box body (2) is a double-layer structure, the inner layer is a filter screen, and the outer layer is composed of two lower compartment doors (19).

4. A precious metal platinum refining and purification device according to claim 1, characterized in that: A side opening (7) in the shape of a horizontal strip is provided on one side of the box body (2), and slide grooves (8) are provided on both sides of the side opening (7). Two sliding blocks are fixedly provided on the inner side of the side door (9), and the sliding blocks are located in the slide grooves (8). The side door (9) is connected to a side oil cylinder (10) provided on the same side of the box body (2).

5. A precious metal platinum refining and purification device according to claim 4, characterized in that: A horizontal screw conveyor (13) is provided directly below the side bin opening (7), a limit heightening plate (14) is provided on the upper portion of the shell of the horizontal screw conveyor (13), and a crusher (16) is located directly below the outlet of the horizontal screw conveyor (13).

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