Precious metal recovery device and method

Abstract

The invention discloses a precious metal recovery device and method, and relates to the technical field of precious metal recovery, the precious metal recovery device comprises a mounting frame, a supporting frame is fixedly connected to the bottom end of the mounting frame, a treatment barrel is arranged on the inner side of the supporting frame, and the top end of the treatment barrel is fixedly connected to the bottom end of the mounting frame; the interior of the mounting frame is fixedly connected with a multi-stage crushing mechanism, the bottom end of the multi-stage crushing mechanism extends to the bottom end of the mounting frame and is fixedly connected with a stirring mechanism, the interior of the mounting frame is fixedly connected with a spraying mechanism, one side of the treatment barrel is fixedly connected with a slag outlet, and the bottom end of the treatment barrel is provided with a flow dividing pipe; and a connecting pipe is fixedly connected to the top end of the flow dividing pipe, and the top end of the connecting pipe extends to the bottom end of the interior of the treatment barrel. Through the arrangement of the multi-stage crushing mechanism, it is guaranteed that raw materials are crushed more uniformly, and it is avoided that precious metal is left in large-particle raw materials, so that the follow-up reaction contact face is affected, and precious metal waste is caused.

Description

Technical Field

[0001] The present invention relates to the technical field of precious metal recycling, and particularly to a precious metal recycling device and method. Background Art

[0002] Precious metals generally refer to metals with relatively low content in the earth's crust and high mining and refining costs. They are regarded as "precious" due to their rarity, corrosion resistance, good electrical and thermal conductivity, and applications in industry and jewelry manufacturing. They mainly refer to 8 metal elements such as gold, silver, and platinum group metals (ruthenium, rhodium, palladium, osmium, iridium, platinum). Most of them have beautiful colors and lusters and are not easily chemically reactive with other substances under general conditions.

[0003] Referring to the Chinese invention patent with the publication number: CN 215150297 U and the name: A Precious Metal Recycling Device and Method, which includes a pretreatment mechanism, a vertical composite recovery tower, and an electrolysis treatment mechanism connected in sequence. In the pretreatment mechanism, first, tailings and slag containing precious metals are crushed and screened, and leaching liquid is used for leaching to precipitate precious metals in ionic state into the slurry. In the vertical composite recovery tower, the slurry containing precious metals does not need to be subjected to solid-liquid separation and can be directly lifted into the exchange column. In the exchange column, the resin descending therein is fully mixed and contacted with the ascending slurry, so that the functional groups on the resin are completely exchanged with the precious metal ions in the slurry, realizing the recovery of precious metals. The resin saturated with adsorption is regenerated through a cleaning column and a regeneration column in sequence. The precious metal recycling device of the present invention does not need to perform solid-liquid separation and does not need to consider the problem of resin blockage, can operate continuously, and the utilization rate of the adsorption capacity of the resin is significantly improved.

[0004] However, in the actual use process, there are still some problems: However, the existing precious metal refining method still uses a single crusher to crush raw materials. After crushing, the sizes are uneven. After screening and re-crushing, some larger raw material particles will be directly put into the next process. In this process, it is easy to cause precious metals to remain in the larger particles, and the leaching liquid cannot completely penetrate them. Secondly, the slag discharge method after leaching is cumbersome. Summary of the Invention

[0005] Technical Problems to be Solved The purpose of the present invention is to make up for the deficiencies of the existing precious metal refining method, which still uses a single crusher to crush raw materials. After crushing, the sizes are uneven. After screening and re-crushing, some larger raw material particles will be directly put into the next process. In this process, it is easy to cause precious metals to remain in the larger particles, and the leaching liquid cannot completely penetrate them. Secondly, the slag discharge method after leaching is cumbersome.

[0006] Technical Solution To achieve the above object, the present invention provides the following technical solution: A precious metal recovery device includes a mounting frame. A support frame is fixedly connected to the bottom end of the mounting frame. A processing barrel is arranged inside the support frame, and the top end of the processing barrel is fixedly connected to the bottom end of the mounting frame. A multi-stage crushing mechanism is fixedly connected inside the mounting frame, and the bottom end of the multi-stage crushing mechanism extends to the bottom end of the mounting frame and is fixedly connected to a stirring mechanism. A spraying mechanism is fixedly connected inside the mounting frame. A slag outlet is fixedly connected to one side of the processing barrel. A diversion pipe is arranged at the bottom end of the processing barrel, and the diversion pipe is arc-shaped. The top end of the diversion pipe is fixedly connected to a connecting pipe, and the top end of the connecting pipe extends to the inner bottom end of the processing barrel. An external connecting pipe is fixedly connected to one side of the diversion pipe, and the diversion pipe, the connecting pipe, the processing barrel and the external connecting pipe are interconnected.

[0007] Further, the multi-stage crushing mechanism includes a servo motor, a driving wheel, a chain and a driving rod. There are two driving wheels which are connected by chain drive. One of the driving wheels is fixedly connected to the output end of the servo motor through a coupling. One end of the servo motor away from the driving wheel is fixedly connected to the surface of the mounting frame, and the other driving wheel is fixedly connected to the top end of the driving rod.

[0008] Further, the multi-stage crushing mechanism further includes a feeding barrel, a grinding head and a discharge groove. There are three feeding barrels which are vertically arranged. The discharge groove is arc-shaped and is respectively fixedly connected to the bottom end of the feeding barrel. The grinding heads are respectively located inside the feeding barrels. One end of the driving rod away from the raw material driving wheel vertically penetrates through the centers of the grinding heads and the discharge grooves in sequence and extends into the processing barrel. The mounting frame is divided into multiple layers, and each layer of the mounting frame is fixedly connected to the outside of the discharge groove on the opposite side.

[0009] Further, the discharge groove is located directly above the grinding head, and the top ends of the grinding heads are all provided with an annular slope. Grinding teeth are fixedly connected to the inner wall of the feeding barrel and the outer side of the grinding head. The gaps between the grinding head and the feeding barrel from top to bottom are getting smaller in sequence.

[0010] Further, the stirring mechanism includes a connecting rod, a stirring block, a pushing strip and a filter screen. The filter screen is circular and is movably connected to the outside of the connecting rod through a bearing at the center of the circle. There are four stirring blocks which are fixedly connected to the outside of the connecting rod in a pair of annular arrays through a collar. The pushing strips are respectively fixedly connected to the bottom of the stirring blocks, and the pushing strips are in contact with the surface of the filter screen. The stirring blocks are in a diamond shape in contact. The top end of the connecting rod is fixedly connected to the bottom end of the driving rod, and the bottom end of the connecting rod is movably connected to the center position of the inner bottom end of the processing barrel through a bearing.

[0011] Further, the filter screen is adapted to the treatment barrel, and the filter screen is fixedly connected to the inside of the treatment barrel. An external interface is provided inside the treatment barrel, and the external interface is communicated with the slag outlet. An electric telescopic rod is fixedly connected to the inside of the slag outlet, and a bin door is fixedly connected to the output end of the electric telescopic rod. The bin door is adapted to the external interface.

[0012] Further, the spraying mechanism includes a water pump, a water suction pipe, an annular pipe and spray heads. The output end of the water pump is fixedly connected to the annular pipe, and several spray heads are fixedly connected to the bottom of the annular pipe in an annular array. The input end of the water pump is fixedly connected to the water suction pipe, and the end of the water suction pipe away from the water pump penetrates through the treatment barrel and extends to its inside. The part of the water suction pipe located inside the treatment barrel is located below the filter screen.

[0013] Further, the water pump is fixedly connected to the inner side of the mounting frame, the annular pipe is fixedly connected to the bottom of the mounting frame and the top of the treatment barrel, and the spray heads are all oriented towards the inside of the treatment barrel.

[0014] A method for using a precious metal recovery device includes the following steps: S1. During use, align the outlet of the raw material conveying pipeline with the gap between the topmost feeding bucket and the grinding head. At the same time, start the servo motor to drive the driving wheel to rotate. At this time, the driving wheel drives its driving rod to rotate through the chain and another driving wheel, so as to drive multiple grinding heads.

[0015] S2. When the raw material falls into the first feeding bucket, the grinding head drives the grinding teeth on its surface to rotate at a high speed, so that the raw material is broken and extruded by the grinding teeth in the gap between the grinding head and the feeding bucket. When the size of the raw material can pass through the gap between the grinding head and the feeding bucket, it will fall into the next feeding bucket along the discharge groove for further crushing and extrusion. After multi-stage treatment, the raw material falls into the treatment barrel along the discharge groove.

[0016] S3. While the driving rod rotates, its bottom end will drive the connecting pipe to rotate in the same track. At the same time, the raw material after crushing and extrusion falls onto the filter screen. At this time, the stirring block is driven by the connecting rod to rotate, stirring the raw material on the filter screen. Secondly, the pushing strip pushes the larger particles on the filter screen away from the filter screen.

[0017] S4. When the raw material falls into the treatment barrel, turn on the water pump to transport the precious metal reaction liquid from the bottom end inside the treatment barrel to the annular pipe through the water suction pipe. At this time, the spray head sprays the liquid inside the annular pipe onto the precious metal raw material again.

[0018] S5. After the reaction is completed, when the liquid containing precious metals needs to be discharged, an external extraction device is connected through an external connecting pipe, and the liquid passes through the connecting pipe, the shunt pipe, the external connecting pipe and the extraction device in sequence for centralized treatment. At this time, the slag inside the treatment pipe needs to be discharged. Control the electric telescopic rod to contract to move the bin door out of the external interface. At this time, due to the rotational centrifugal force of the pushing bar, the slag is pushed towards the inner wall of the treatment barrel until it enters the slag outlet from the external interface and is discharged, and then the intermediate treatment is carried out.

[0019] Compared with the prior art, the precious metal recovery device and method have the following beneficial effects: First, through the multi-stage crushing mechanism set in the present invention, the servo motor drives the driving wheel to rotate. At this time, the driving wheel drives the driving rod to rotate through the chain and another driving wheel, so as to drive a plurality of grinding heads. When the raw material falls into the first feeding barrel, the grinding heads drive the grinding teeth on their surfaces to rotate at high speed, so that the raw material is broken and extruded by the grinding teeth in the gap between the grinding heads and the feeding barrel. When the size of the raw material can pass through the gap between the grinding heads and the feeding barrel, it will fall into the next feeding barrel along the discharge groove for further crushing and extrusion. After multi-stage treatment, the raw material falls into the treatment barrel along the discharge groove, which is beneficial to ensure that the raw material is crushed more evenly, avoid precious metals remaining in the large-particle raw material, thereby affecting the subsequent reaction contact surface and causing waste of precious metals.

[0020] Second, through the stirring mechanism set in the present invention, when the driving rod rotates, its bottom end will drive the connecting pipe to rotate in the same track. At the same time, the raw material after crushing and extrusion falls onto the filter screen surface. At this time, the stirring block is driven by the connecting rod to rotate to stir the raw material on the filter screen surface. Secondly, the pushing bar pushes the larger particles on the filter screen surface away from the filter screen. Secondly, control the electric telescopic rod to contract to move the bin door out of the external interface. At this time, due to the rotational centrifugal force of the pushing bar, the slag is pushed towards the inner wall of the treatment barrel until it enters the slag outlet from the external interface and is discharged, and then the intermediate treatment is carried out, which is beneficial to avoid blockage of the filter screen during filtration and improve the contact surface between the raw material and the reaction liquid. Secondly, it is convenient for subsequent waste residue discharge and centralized treatment.

[0021] Third, through the spraying mechanism set in the present invention, when the raw material falls into the treatment barrel, the water pump is started to transport the precious metal reaction liquid from the bottom end of the treatment barrel to the annular pipe through the water extraction pipe. At this time, the nozzle sprays the liquid inside the annular pipe onto the precious metal raw material again. After the reaction is completed, when the liquid containing precious metals needs to be discharged, an external extraction device is connected through an external connecting pipe, and the liquid passes through the connecting pipe, the shunt pipe, the external connecting pipe and the extraction device in sequence for centralized treatment, which is beneficial to recycle the reaction liquid and improve the precious metal content in turn, thereby reducing the excessive use of the reaction liquid.

[0022] Other advantages, objects, and features of the present invention will be set forth in part in the following description, and in part will be obvious to those skilled in the art upon examination of the following, or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic three-dimensional structure diagram of the present invention; Figure 2 is a schematic bottom view structure diagram of the present invention; Figure 3 is a schematic sectional connection structure diagram of the processing barrel of the present invention; Figure 4 is a schematic sectional structure diagram of the slag discharge port of the present invention; Figure 5 is a schematic structure diagram of the multi-stage crushing mechanism of the present invention; Figure 6 is a schematic connection structure diagram of the servo motor of the present invention; Figure 7 of the present invention Figure 5 is an enlarged structure diagram at A in; Figure 8 is a schematic structure diagram of the stirring mechanism of the present invention.

[0024] In the figure: 1, mounting frame; 2, support frame; 3, processing barrel; 4, multi-stage crushing mechanism; 401, servo motor; 402, driving wheel; 403, chain; 404, driving rod; 405, feeding bucket; 406, grinding head; 407, discharge groove; 5, stirring mechanism; 501, connecting rod; 502, stirring block; 503, pushing bar; 504, filter screen; 6, spraying mechanism; 601, water pump; 602, water suction pipe; 603, annular pipe; 604, spray head; 7, slag discharge port; 8, shunt pipe; 9, connecting pipe; 10, external connecting pipe; 11, grinding teeth; 12, external interface; 13, electric telescopic rod; 14, warehouse door. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Such as Figure 1-8As shown, the present invention provides a technical solution: a precious metal recovery device, comprising a mounting frame 1, the bottom end of the mounting frame 1 is fixedly connected to a support frame 2, a processing barrel 3 is provided on the inner side of the support frame 2, and the top of the processing barrel 3 is fixedly connected to the bottom end of the mounting frame 1, the interior of the mounting frame 1 is fixedly connected to a multi-stage crushing mechanism 4, and the bottom end of the multi-stage crushing mechanism 4 extends to the bottom end of the mounting frame 1 and is fixedly connected to a stirring mechanism 5, the interior of the mounting frame 1 is fixedly connected to a spraying mechanism 6, one side of the processing barrel 3 is fixedly connected to a slag outlet 7, the bottom end of the processing barrel 3 is provided with a diverter pipe 8, and the diverter pipe 8 is arc-shaped, the top of the diverter pipe 8 is fixedly connected to a connecting pipe 9, and the top of the connecting pipe 9 extends to the inner bottom end of the processing barrel 3, one side of the diverter pipe 8 is fixedly connected to an external pipe 10, and the diverter pipe 8, the connecting pipe 9, the processing barrel 3 and the external pipe 10 are connected to each other.

[0027] like Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the multi-stage crushing mechanism 4 includes a servo motor 401, a driving wheel 402, a chain 403 and a driving rod 404. There are two driving wheels 402 and they are connected by the chain 403. One of the driving wheels 402 is fixedly connected to the output end of the servo motor 401 through a coupling. The end of the servo motor 401 away from the driving wheel 402 is fixedly connected to the surface of the mounting frame 1, and the other driving wheel 402 is fixedly connected to the top of the driving rod 404. The multi-stage crushing mechanism 4 also includes a discharge barrel 405, a grinding head 406 and a discharge chute 407. The discharge barrel 405 is provided with three vertically placed discharge chutes 407, which are arc-shaped and fixedly connected to the discharge barrels 405. At the bottom end of the discharge barrel 405, the grinding head 406 is respectively located inside the discharge barrel 405, and the end of the driving rod 404 away from the raw material driving wheel 402 vertically passes through the center position of the grinding head 406 and the discharge groove 407 in sequence and extends to the inside of the processing barrel 3. The mounting frame 1 is divided into multiple layers, and each layer of the mounting frame 1 is fixedly connected to the outside of the discharge groove 407 on the opposite side. The discharge groove 407 is located directly above the grinding head 406, and the top of the grinding head 406 is provided with a circular slope. The inner wall of the discharge barrel 405 and the outer side of the grinding head 406 are fixedly connected with grinding teeth 11, and the gap between the grinding head 406 and the discharge barrel 405 becomes smaller from top to bottom.

[0028] The servo motor 401 drives the driving wheel 402 to rotate. At this time, the driving wheel 402 drives the driving rod 404 to rotate through the chain 403 and another driving wheel 402, so as to drive a plurality of grinding heads 406. When the raw material falls into the first feeding bucket 405, the grinding heads 406 drive the grinding teeth 11 on their surfaces to rotate at high speed, so that the raw material is broken and extruded by the grinding teeth 11 inside the gap between the grinding heads 406 and the feeding bucket 405. When the size of the raw material can pass through the gap between the grinding heads 406 and the feeding bucket 405, it will fall into the next feeding bucket 405 along the discharge groove 407 for crushing and extrusion again. After multi-stage treatment, the raw material falls into the treatment bucket 3 along the discharge groove 407, which is beneficial to ensure that the raw material is crushed more evenly, avoid the residue of precious metals in the large-particle raw material, thus affecting the subsequent reaction contact surface and causing waste of precious metals.

[0029] As Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 shown, the stirring mechanism 5 includes a connecting rod 501, a stirring block 502, a pushing bar 503 and a filter screen 504. The filter screen 504 is circular and is movably connected to the outside of the connecting rod 501 through a bearing at the center of the circle. There are four stirring blocks 502, which are fixedly connected to the outside of the connecting rod 501 in a pair of circular arrays through collar rings. The pushing bars 503 are respectively fixedly connected to the bottoms of the stirring blocks 502, and the pushing bars 503 are in contact with the surface of the filter screen 504. The stirring blocks 502 are in a diamond shape in contact. The top end of the connecting rod 501 is fixedly connected to the bottom end of the driving rod 404, and the bottom end of the connecting rod 501 is movably connected to the center position of the inner bottom end of the treatment bucket 3 through a bearing. The filter screen 504 is adapted to the treatment bucket 3, and the filter screen 504 is fixedly connected to the inside of the treatment bucket 3. An external interface 12 is opened inside the treatment bucket 3, and the external interface 12 is communicated with the slag discharge port 7. An electric telescopic rod 13 is fixedly connected inside the slag discharge port 7, and the output end of the electric telescopic rod 13 is fixedly connected with a hatch 14. The hatch 14 is adapted to the external interface 12.

[0030] When the driving rod 404 rotates, its bottom end will drive the connecting pipe 9 to rotate in the same track. At the same time, the raw material after crushing and extrusion falls onto the surface of the filter screen 504. At this time, the stirring blocks 502 are driven by the connecting rod 501 to rotate, and the raw material on the surface of the filter screen 504 is stirred. Secondly, the pushing bars 503 push the larger particles on the surface of the filter screen 504 away from the filter screen 504. Secondly, control the electric telescopic rod 13 to contract to move the hatch 14 out of the external interface 12. At this time, due to the centrifugal force of the rotation of the pushing bars 503, the crushed slag is pushed towards the inner wall of the treatment bucket 3 until it enters the slag discharge port 7 from the external interface 12 and is discharged, and then further processed, which is beneficial to avoid the blockage of the filter screen 504 during filtration and improve the contact surface between the raw material and the reaction liquid. Secondly, it is convenient for the subsequent discharge and centralized treatment of the waste residue.

[0031] As Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8 shown, the spraying mechanism 6 includes a water pump 601, a water suction pipe 602, an annular pipe 603 and spray heads 604. The output end of the water pump 601 is fixedly connected to the annular pipe 603, and several spray heads 604 are fixedly connected to the bottom of the annular pipe 603 in an annular array. The input end of the water pump 601 is fixedly connected to the water suction pipe 602, and one end of the water suction pipe 602 away from the water pump 601 penetrates through the treatment barrel 3 and extends into its interior. The part of the water suction pipe 602 located inside the treatment barrel 3 is located below the filter screen 504. The water pump 601 is fixedly connected to the inner side of the mounting frame 1, the annular pipe 603 is fixedly connected to the bottom of the mounting frame 1 and the top of the treatment barrel 3, and the spray heads 604 all face the interior of the treatment barrel 3.

[0032] When the raw materials fall into the treatment barrel 3, the water pump 601 is turned on to transport the precious metal reaction liquid from the inner bottom end of the treatment barrel 3 to the annular pipe 603 through the water suction pipe 602. At this time, the spray heads spray the liquid inside the annular pipe 603 onto the precious metal raw materials again. After the reaction is completed, when the liquid containing precious metals needs to be discharged, an external extraction device is connected through the external connection pipe 10, so that the liquid passes through the connection pipe 9, the flow dividing pipe 8, the external connection pipe 10 and the extraction device in sequence for centralized treatment, which is beneficial to the cyclic use of the reaction liquid to sequentially increase the precious metal content, thereby reducing the excessive use of the reaction liquid.

[0033] Working principle: When in use, align the outlet of the raw material conveying pipeline with the gap between the discharging bucket 405 at the topmost position and the grinding head 406. At the same time, start the servo motor 401 to drive the driving wheel 402 to rotate. At this time, the driving wheel 402 drives the driving rod 404 to rotate through the chain 403 and another driving wheel 402, so as to drive multiple grinding heads 406. When the raw material falls into the first discharging bucket 405, the grinding head 406 drives the grinding teeth 11 on its surface to rotate at a high speed, so that the raw material is broken and extruded by the grinding teeth 11 inside the gap between the grinding head 406 and the discharging bucket 405. When the size of the raw material can pass through the gap between the grinding head 406 and the discharging bucket 405, it will fall into the next discharging bucket 405 along the discharge groove 407 for further crushing and extrusion. After multi-stage treatment, the raw material falls into the inside of the treatment barrel 3 along the discharge groove 407. When the driving rod 404 rotates, its bottom end will drive the connecting pipe 9 to rotate in the same track. At the same time, the raw material after crushing and extrusion falls onto the surface of the filter screen 504. At this time, the stirring block 502 is driven by the connecting rod 501 to rotate to stir the raw material on the surface of the filter screen 504. Secondly, the pushing strip 503 pushes the larger particles on the surface of the filter screen 504 away from the filter screen 504. When the raw material falls into the treatment barrel 3, the water pump 601 is started to transport the precious metal reaction liquid from the bottom end inside the treatment barrel 3 to the annular pipe 603 through the water suction pipe 602. At this time, the nozzle sprays the liquid inside the annular pipe 603 onto the precious metal raw material again. After the reaction is completed, when the liquid containing precious metal needs to be discharged, an external extraction device is connected through the external connection pipe 10, so that the liquid is centrally treated through the connecting pipe 9, the shunt pipe 8, the external connection pipe 10 and the extraction device in sequence. At this time, the slag inside the treatment pipe needs to be discharged. Control the electric telescopic rod 13 to contract to move the hatch 14 out of the external interface 12. At this time, due to the centrifugal force of the rotation of the pushing strip 503, the slag is pushed towards the inner wall of the treatment barrel 3 until it enters the slag discharge port 7 from the external interface 12 for further treatment.

[0034] It should be noted that in this text, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and defined, the terms "fixedly installed", "installed", "connected", "coupled" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "coupled" can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precious metal recovery device, comprising a mounting frame (1), characterized in that: The bottom end of the mounting frame (1) is fixedly connected to a support frame (2). Inside the support frame (2), a processing barrel (3) is provided, and the top end of the processing barrel (3) is fixedly connected to the bottom end of the mounting frame (1). Inside the mounting frame (1), a multi-stage crushing mechanism (4) is fixedly connected, and the bottom end of the multi-stage crushing mechanism (4) extends to the bottom end of the mounting frame (1) and is fixedly connected to a stirring mechanism (5). Inside the mounting frame (1), a spraying mechanism (6) is fixedly connected. One side of the processing barrel (3) is fixedly connected to a slag outlet (7). At the bottom end of the processing barrel (3), a diversion pipe (8) is provided, and the diversion pipe (8) is arc-shaped. The top end of the diversion pipe (8) is fixedly connected to a connecting pipe (9), and the top end of the connecting pipe (9) extends to the inner bottom end of the processing barrel (3). One side of the diversion pipe (8) is fixedly connected to an external connecting pipe (10), and the diversion pipe (8), the connecting pipe (9), the processing barrel (3), and the external connecting pipe (10) are interconnected.

2. The precious metal recovery device according to claim 1, characterized in that: The multi-stage crushing mechanism (4) includes a servo motor (401), a driving wheel (402), a chain (403), and a driving rod (404). There are two driving wheels (402) which are connected by a chain (403). One of the driving wheels (402) is fixedly connected to the output end of the servo motor (401) through a coupling. One end of the servo motor (401) away from the driving wheel (402) is fixedly connected to the surface of the mounting frame (1), and the other driving wheel (402) is fixedly connected to the top end of the driving rod (404).

3. A precious metal recovery device according to claim 2, characterized in that: The multi-stage crushing mechanism (4) further includes a feeding barrel (405), a grinding head (406), and a discharge groove (407). There are three feeding barrels (405) placed vertically. The discharge groove (407) is arc-shaped and is respectively fixedly connected to the bottom ends of the feeding barrels (405). The grinding heads (406) are respectively located inside the feeding barrels (405). One end of the driving rod (404) away from the raw material driving wheel (402) vertically penetrates through the centers of the grinding heads (406) and the discharge grooves (407) in sequence and extends into the interior of the processing barrel (3). The mounting frame (1) is divided into multiple layers, and each layer of the mounting frame (1) is fixedly connected to the outside of the discharge groove (407) on the opposite side.

4. A precious metal recovery device according to claim 3, characterized in that: The discharge groove (407) is located directly above the grinding head (406), and the top ends of the grinding heads (406) are all provided with an annular slope. Grinding teeth (11) are fixedly connected to the inner walls of the feeding barrels (405) and the outside of the grinding heads (406). The gaps between the grinding heads (406) and the feeding barrels (405) decrease sequentially from top to bottom.

5. A precious metal recovery device according to claim 4, characterized in that: The stirring mechanism (5) includes a connecting rod (501), a stirring block (502), a pushing bar (503) and a filter screen (504). The filter screen (504) is circular and is movably connected to the outside of the connecting rod (501) through a bearing at the center of the circle. There are four stirring blocks (502) and they are fixedly connected to the outside of the connecting rod (501) in a pair of circular arrays through collar rings. The pushing bars (503) are respectively fixedly connected to the bottoms of the stirring blocks (502), and the pushing bars (503) are in contact with the surface of the filter screen (504). The contact of the stirring blocks (502) is diamond-shaped. The top end of the connecting rod (501) is fixedly connected to the bottom end of the driving rod (404), and the bottom end of the connecting rod (501) is movably connected to the center position of the inner bottom end of the treatment barrel (3) through a bearing.

6. The precious metal recovery device according to claim 5, wherein: The filter screen (504) is adapted to the treatment barrel (3), and the filter screen (504) is fixedly connected to the inside of the treatment barrel (3). An external interface (12) is opened inside the treatment barrel (3), and the external interface (12) is communicated with the slag outlet (7). An electric telescopic rod (13) is fixedly connected to the inside of the slag outlet (7), and a bin door (14) is fixedly connected to the output end of the electric telescopic rod (13). The bin door (14) is adapted to the external interface (12).

7. A precious metal recovery device according to claim 6, characterized in that: The spraying mechanism (6) includes a water pump (601), a water suction pipe (602), an annular pipe (603) and a spray head (604). The output end of the water pump (601) is fixedly connected to the annular pipe (603), and several spray heads (604) are fixedly connected to the bottom of the annular pipe (603) in an annular array. The input end of the water pump (601) is fixedly connected to the water suction pipe (602), and the end of the water suction pipe (602) away from the water pump (601) penetrates the treatment barrel (3) and extends to its inside. The part of the water suction pipe (602) located inside the treatment barrel (3) is located below the filter screen (504).

8. A precious metal recovery device according to claim 7, characterized in that: The water pump (601) is fixedly connected to the inner side of the mounting frame (1). The annular pipe (603) is fixedly connected to the bottom of the mounting frame (1) and the top of the treatment barrel (3). The spray heads (604) all face the inside of the treatment barrel (3).

9. The method of using a precious metal recovery device according to claim 8, characterized in that: Comprising the following steps: S1. During use, align the outlet of the raw material conveying pipeline with the gap between the topmost feeding bucket (405) and the grinding head (406). At the same time, start the servo motor (401) to drive the driving wheel (402) to rotate. At this time, the driving wheel (402) drives the driving rod (404) to rotate through the chain (403) and another driving wheel (402), so as to drive a plurality of grinding heads (406). S2. When the raw materials fall into the first feeding bucket (405), the grinding head (406) drives the grinding teeth (11) on its surface to rotate at a high speed, so that the raw materials are broken and extruded by the grinding teeth (11) inside the gap between the grinding head (406) and the feeding bucket (405). When the size of the raw materials can pass through the gap between the grinding head (406) and the feeding bucket (405), they will fall into the next feeding bucket (405) along the discharge groove (407) for further crushing and extrusion. After multi-stage treatment, the raw materials will fall into the treatment bucket (3) along the discharge groove (407). S3. When the driving rod (404) rotates, its bottom end will drive the connecting pipe (9) to rotate in the same trajectory. At the same time, the raw materials after crushing and extrusion fall onto the surface of the filter screen (504). At this time, the stirring block (502) is driven by the connecting rod (501) to rotate, stirring the raw materials on the surface of the filter screen (504). Then, the pushing strip (503) pushes the larger particles on the surface of the filter screen (504) away from the filter screen (504). S4. When the raw materials fall into the treatment bucket (3), the water pump (601) is started to transport the precious metal reaction liquid from the bottom end inside the treatment bucket (3) to the annular pipe (603) through the water suction pipe (602). At this time, the nozzle sprays the liquid inside the annular pipe (603) onto the precious metal raw materials again. S5. After the reaction is completed, when the liquid containing precious metals needs to be discharged, an extraction device is externally connected through the external connecting pipe (10), so that the liquid is successively concentrated and treated through the connecting pipe (9), the shunt pipe (8), the external connecting pipe (10) and the extraction device. At this time, the slag inside the treatment pipe needs to be discharged. The electric telescopic rod (13) is controlled to contract to move the bin door (14) out of the external interface (12). At this time, due to the centrifugal force of the rotation of the pushing strip (503), the slag is pushed towards the inner wall of the treatment bucket (3) until it enters the slag discharge port (7) from the external interface (12) and is discharged, and then further treatment is carried out.

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