A leaching and impurity removal device for rare metal smelting

Abstract

The utility model discloses a kind of leaching and impurity removing devices for rare metal smelting, including inlet pipe, drain pipe, device body;The device body further includes shell, inner container, filter bag, base motor, processing mechanism, the inner container of the water hole of side surface setting is rotationally arranged in the inside of shell, filter bag is arranged in the inside of inner container, base motor is fixedly arranged in the inside bottom of shell, the upper output end of base motor is connected with the below of inner container, processing mechanism is arranged in the above of shell, and base motor is connected between the telecommunication of production workshop controller.The function of the utility model is that the rare metal in the material of broken block and powder can be leached and impurity removed simultaneously, the effective separation of leaching liquid and material is achieved, the leaching liquid remaining in material is recovered to the maximum extent, the waste of rare metal element in material is reduced, and the leaching efficiency is improved;Filter bag can prevent material chippings from remaining in device interior during leaching process, and facilitate cleaning and recycling.

Description

Technical Field

[0001] This utility model belongs to the technical field of leaching devices, and particularly relates to a leaching and impurity removal device for rare metal smelting. Background Technology

[0002] In rare metal smelting, leaching is a core separation and purification process. The process involves first selectively dissolving the target metal in the raw material into a solution using leaching agents such as acids or alkalis. Then, by precisely controlling the solution's pH (e.g., hydrolysis to remove iron), adding specific organic reagents for solvent extraction, or employing ion exchange, impurity ions such as iron, aluminum, and copper coexisting in the solution are thoroughly removed, ultimately yielding a pure solution containing the target metal.

[0003] In the prior art, such as the leaching device for metal smelting disclosed in Chinese Patent (CN216614792U), there is an leaching tank, an extraction device is installed in the inner cavity of the leaching tank, a door is installed on one side of the leaching tank, a sealing plate is fixedly installed in the inner cavity of the leaching tank and above the extraction device, a mesh plate is slidably installed on one end of the sealing plate, and the other end of the mesh plate passes through the sealing plate and extends to the outside of the sealing plate.

[0004] This method has the following drawbacks: First, after the rare metal elements in the material are leached using this device, the material is separated from the leachate by a grid plate. However, after the material is lifted through the grid plate, some leachate remains on the surface of the material. This leachate contains trace amounts of metal elements that are not recovered, resulting in material waste and low recovery efficiency. Second, for powdered materials, some powder will be discharged with the leachate after separation. These materials cannot be effectively separated and recovered in the device and need to be mixed in the leachate, requiring additional filtration and recovery processes. This increases both the separation efficiency and the complexity of the process. Third, after material extraction, the material is separated by the grid. Metal materials accumulate on the grid and need to be manually removed by operators. Furthermore, cleaning metal debris from the grid is difficult, resulting in low material removal efficiency.

[0005] Therefore, this utility model provides a leaching and impurity removal device for rare metal smelting. Utility Model Content

[0006] To address the aforementioned technical problems, this utility model discloses a leaching and impurity removal device for rare metal smelting. This device can simultaneously leach and remove rare metals from both fragmented and powdered materials, achieving effective separation of the leaching solution and the material. It also maximizes the recovery of residual leaching solution from the material, reducing the waste of rare metal elements and improving leaching efficiency. The filter bag prevents material debris from remaining inside the device during the leaching process, facilitating cleaning and recycling.

[0007] To achieve the above-mentioned technical effects, this utility model provides a leaching and impurity removal device for rare metal smelting, including an inlet pipe, a drain pipe, and a device body. The inlet pipe is located on the upper left side of the device body, and the drain pipe is located on the lower right side of the device body. The device body also includes an outer shell, an inner liner, a filter bag, a base motor, and a processing mechanism. The inner liner, which has water holes on its side, is rotatably mounted inside the outer shell. The filter bag is located inside the inner liner. The base motor is fixedly mounted on the bottom of the inner liner. The upper output end of the base motor is connected to the lower part of the inner liner. The processing mechanism is located on the upper part of the outer shell. The base motor is electrically connected to the production workshop controller.

[0008] Preferably, the filter bag further includes a filter cloth, a fixing ring, a support ring, a support strip, and a pull ring. The fixing rings are respectively disposed at the upper and lower ends of the support ring, the support rings are respectively disposed between the fixing rings, the support strip is vertically disposed between the fixing ring and the support ring, the filter cloth is wrapped around the outside of the fixing ring, the support ring, and the support strip, and the pull ring is rotatably disposed on the side of the upper fixing ring.

[0009] Preferably, the inner bottom of the inner liner is provided with a circular groove that matches the fixing ring.

[0010] Preferably, the processing mechanism further includes a drive motor, a mounting base, a stirring mechanism, and a filter press mechanism. The drive motor is positioned above the mounting base, which is detachably positioned above the outer casing. The front end of the drive motor passes through the mounting base and is rotatably connected to it. The stirring mechanism is detachably positioned below the mounting base, and the filter press mechanism is detachably positioned below the mounting base. The drive motor is electrically connected to the production workshop control cabinet.

[0011] Preferably, the mounting base further includes a flange connection hole a, a flange connection hole b, and a square insertion hole. The square insertion hole is located at the center of the mounting base below the output end of the drive motor. The flange connection hole a is located on the side of the insertion hole on the output end of the drive motor. The flange connection hole b is located on the bottom of the mounting base on the side of the flange connection hole a.

[0012] Preferably, the mounting base is connected to the top of the housing via a tapered threaded structure.

[0013] Preferably, a rotating seat and a lifting lug are provided above the mounting base.

[0014] Preferably, the filter press mechanism further includes sleeve a, sleeve b, screw, and filter press disc. The top end of sleeve a is connected to the lower part of flange connection hole b through a flange. Sleeve b is slidably sleeved on the inner side of sleeve a. Screw is threadedly sleeved on the inner side of sleeve b. The lower end of screw is connected to filter press disc, and the upper end of screw is inserted into square insertion hole.

[0015] Preferably, the bottom edge of the filter press is provided with an annular groove that matches the fixing ring, and a sealing strip is provided inside the annular groove.

[0016] Preferably, the stirring mechanism further includes a rotating shaft, a fixed flange, and a stirring rod. The rotating shaft is located below the square insertion hole, with the top end of the rotating shaft inserted into the square insertion hole. The fixed flange is located on the side of the rotating shaft and is bolted to the bottom of the flange connection hole a. The stirring rod is located on the side of the rotating shaft.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The device consists of an outer shell, an inner liner, a filter bag, a base motor, and a processing mechanism. It can simultaneously leach and remove rare metals from fragmented and powdered materials, effectively separating the leachate from the material while maximizing the recovery of residual leachate from the material. This reduces the waste of rare metal elements in the material and improves leaching efficiency. The filter bag prevents material debris from remaining inside the device during the leaching process, facilitating cleaning and recycling. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention; Figure 2 This is an isometric view of the internal structure of Embodiment 5 of this utility model; Figure 3 yes Figure 2 A partial schematic diagram of 'a' in the diagram; Figure 4 This is an isometric view of the internal structure of Embodiment 6 of this utility model; The attached diagram lists the components represented by each number as follows: 1. Inlet pipe; 2. Drain pipe; 3. Outer shell; 4. Inner liner; 5. Filter bag; 6. Base motor; 7. Filter cloth; 8. Fixing ring; 9. Support ring; 10. Support bar; 11. Pull ring; 12. Drive motor; 13. Mounting base; 14. Flange connection hole a; 15. Flange connection hole b; 16. Square insertion hole; 17. Rotating seat; 18. Lifting lug; 19. Sleeve a; 20. Sleeve b; 21. Screw; 22. Filter press plate; 23. Rotating shaft; 24. Fixing flange; 25. Stirring rod. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. Example 1

[0020] like Figures 1 to 4As shown The prior art in this embodiment has the following problems: The inventors have found the following defects in the prior art: 1. After the rare metal elements in the material are leached using the device, the material is separated from the leaching liquid by a grid plate. However, after the material is lifted by the grid plate, some leaching liquid still adheres to the surface of the material. These leaching liquids contain trace amounts of metal elements that are not recovered, resulting in material waste and low recovery efficiency; 2. For powdered materials, some powder will be discharged with the leaching liquid after separation. These materials cannot be effectively separated and recovered in the device. They are mixed in the leaching liquid and require additional filtration and recovery processes, which increases the process complexity while reducing separation efficiency; 3. After material extraction, the material is separated by the grid. Metal materials accumulate on the grid and need to be manually removed by operators. Furthermore, cleaning metal debris on the grid is difficult, resulting in low material removal efficiency; Therefore, the inventor provides a leaching and impurity removal device for rare metal smelting, including an inlet pipe 1, a drain pipe 2, and a device body. The inlet pipe 1 is located on the upper left side of the device body, and the drain pipe 2 is located on the lower right side of the device body. The device body also includes an outer shell 3, an inner liner 4, a filter bag 5, a base motor 6, and a processing mechanism. The inner liner 4, which has water holes on its side, is rotatably located inside the outer shell 3. The filter bag 5 is located inside the inner liner 4. The base motor 6 is fixedly located at the bottom of the inner side of the outer shell 3. The upper output end of the base motor 6 is connected to the lower part of the inner liner 4. The processing mechanism is located above the outer shell 3. The base motor 6 is electrically connected to a production workshop controller (not shown in the figure).

[0021] Using the above scheme, when performing rare metal leaching operations, the material is placed in the filter bag 5, and then the filter bag 5 is hoisted into the inner liner 4 by the hoisting equipment. The leaching solution is added into the interior of the outer shell 3 through the liquid inlet pipe 1. The height of the liquid inlet pipe 1 is higher than the height of the opening of the filter bag 5. The leaching solution is discharged from top to bottom into the material inside the filter bag 5 through the water holes of the inner liner 4. Then, the material inside the filter bag 5 is fully mixed with the leaching solution by the processing mechanism. After the leaching time is reached, the leaching solution is discharged through the liquid outlet pipe 2. After the initial leachate is discharged, the processing mechanism is adjusted so that the inner liner 4 can be driven to rotate at high speed by the base motor 6. The base motor 6 is set as a dd drive motor. By rotating at high speed, the residual leachate in the material in the filter bag 5 of the inner liner 4 is thrown out from the water hole of the inner liner 4. After the leachate is thrown out, it is discharged along the inner wall of the outer shell 3 through the drain pipe 2. Alternatively, the base motor 6 can be omitted from the bottom of the inner liner 4. The inner liner 4 can be fixed inside the outer shell 3. The leachate in the material in the filter bag 5 can be squeezed out through the processing mechanism by adjusting the processing mechanism. After the leachate is completed, the filter bag 5 inside the inner liner 4 can be removed to complete the leachate process. Example 2

[0022] like Figures 1 to 4 As shown Furthermore, the filter bag 5 also includes a filter cloth 7, a fixing ring 8, a support ring 9, a support strip 10, and a pull ring 11. The fixing rings are respectively disposed at the upper and lower ends of the support ring 9, the support rings 9 are respectively disposed between the fixing rings, the support strip 10 is vertically disposed between the fixing ring and the support ring 9, the filter cloth 7 is wrapped around the outside of the fixing ring, the support ring 9, and the support strip 10, and the pull ring 11 is rotatably disposed on the side of the upper fixing ring. Furthermore, the inner bottom of the inner liner 4 is provided with a circular groove that matches the fixing ring; The fixing ring is used to restrict the shape of the filter bag 5 at the upper and lower ends of the filter cloth 7. The support ring 9 is set in the middle of the filter bag 5 to provide horizontal support for the middle position of the filter bag 5. The support strip 10 is vertically set in the fixing ring and the support ring 9 to support the filter bag 5 longitudinally. The fixing ring, the support ring 9, and the support strip 10 are all made of flexible rubber material, which provides shape fixation while being resistant to compression and able to recover deformation. The pull ring 11 is set on the side of the fixing ring and can be used to provide a lifting point when the filter bag 5 is filled with material, so as to facilitate lifting with a hook. By loading the material into the filter bag 5 for leaching and impurity removal treatment, the leaching solution containing rare metals is discharged from the water holes of the filter cloth 7 and the inner liner 4 after leaching. The remaining material can be directly taken out with the filter bag 5 for recycling, which prevents material debris from remaining inside the device during the leaching process and facilitates cleaning and recycling. Example 3

[0023] like Figures 1 to 4 As shown Furthermore, the processing mechanism also includes a drive motor 12, a mounting base 13, a stirring mechanism, and a filter press mechanism. The drive motor 12 is disposed above the mounting base 13, and the mounting base 13 is detachably disposed above the outer casing 3. The front end of the drive motor 12 passes through the mounting base 13 and is rotatably connected to the mounting base 13. The stirring mechanism is detachably disposed below the mounting base 13, and the filter press mechanism is detachably disposed below the mounting base 13. The drive motor 12 is electrically connected to the production workshop control cabinet. The drive motor 12 can drive the stirring mechanism and the filter press mechanism inside the device. The front end of the drive motor 12 is rotated on the mounting base 13. The stirring mechanism and the filter press mechanism below can be disassembled and replaced under different usage conditions. During the leaching and impurity removal process, a stirring mechanism can be installed below the drive motor 12 to stir the mixture of materials and leaching solution; When using the base motor 6 to spin dry and recover the leachate, clean the stirring mechanism below the drive motor 12 with the leachate and then remove it. After that, close the mounting base 13 and start the base motor 6 to spin dry the water on the surface of the material in the filter bag 5 at high speed, thereby recovering the leachate remaining on the surface of the material. This method is suitable for leaching rare metals in materials with larger particle sizes. When using a filter press to recover leachate, the stirring mechanism below the drive motor 12 is cleaned with leachate and then removed. The filter press is then installed, and the mounting base 13 is closed. The drive motor 12 is started to squeeze out the leachate remaining in the material in the filter bag 5. After being squeezed, the leachate passes through the filter cloth 7 and is discharged from the water holes in the inner liner 4. This method is suitable for leaching rare metals in materials with small particle size. The above two methods can also be used in combination. The choice of method depends on the particle size of the material and the compressibility of the dd drive motor. Through these methods, the device can simultaneously leach and remove rare metals from both fragmented and powdered materials, achieving effective separation of the leachate and the material. At the same time, it maximizes the recovery of residual leachate from the material, reduces the waste of rare metal elements in the material, and improves leaching efficiency. Example 4

[0024] like Figures 1 to 4 As shown Furthermore, the mounting base 13 also includes a flange connection hole a14, a flange connection hole b15, and a square insertion hole 16. The square insertion hole 16 is located at the center of the mounting base 13 below the output end of the drive motor 12. The flange connection hole a14 is located on the side of the insertion hole on the output end of the drive motor 12. The flange connection hole b15 is located on the side of the flange connection hole a14 at the bottom of the mounting base 13. Furthermore, the mounting base 13 is connected to the top of the housing 3 via a tapered threaded structure; Furthermore, a rotating seat 17 and a lifting lug 18 are provided above the mounting base 13; The mounting base 13 is connected to the filter mechanism via a square insertion hole 16 and a flange connection hole a14. The mounting base 13 is also connected to the filter press mechanism via a flange connection hole b15 and a square insertion hole 16. This allows for quick replacement of the stirring mechanism and the filter press mechanism below the mounting base 13 using bolts. The mounting base 13 is connected to the top of the outer shell 3 via a tapered threaded structure. When replacing the stirring mechanism and the filter press mechanism, the mounting base 13 is rotated by inserting a steel pipe into the rotating seat 17. Then, the mounting base 13 is lifted by the lifting lug 18 for disassembly and replacement. Compared with a straight threaded structure connection, this method can distribute the pressure of the mounting base 13 on the top of the outer shell 3, providing better support. In practice, a support plate can also be installed on the side of the mounting base 13 and connected with a snap fastener. Example 5

[0025] like Figures 1 to 4 As shown Furthermore, the filter press mechanism also includes a sleeve a19, a sleeve b20, a screw 21, and a filter press disc 22. The top end of the sleeve a19 is connected to the lower part of the flange connection hole b15 through a flange. The sleeve b20 is slidably sleeved on the inner side of the sleeve a19. The screw 21 is threadedly sleeved on the inner side of the sleeve b20. The lower end of the screw 21 is connected to the filter press disc 22, and the upper end of the screw 21 is inserted into the square insertion hole 16. Furthermore, the bottom edge of the filter press 22 is provided with an annular groove that matches the fixing ring, and a sealing strip (not shown in the figure) is provided inside the annular groove. When installing the filter press mechanism, the top of the screw 21 is inserted into the square insertion hole 16. Then, the sleeve a19 is connected to the flange connection hole b15 by threads. When using the filter press function, the drive motor 12 is started. The drive motor 12 drives the screw 21 to rotate through the square insertion hole 16. The screw 21 rotates inside the sleeve b20. Through the threads, the sleeve b20 extends downward inside the sleeve a19. The sleeve b20 drives the filter press disc 22 to press down the filter bag 5. The top of the filter press disc 22 and the fixing ring above the filter bag 5 are sealed by a sealing strip to prevent the material from flowing out from the gap between the filter press disc 22 and the fixing ring during the filter press process. The residual leachate in the material is discharged from the side of the filter bag 5 through the water hole of the inner liner 4 after filter press. Example 6

[0026] like Figures 1 to 4 As shown Furthermore, the stirring mechanism also includes a rotating shaft 23, a fixed flange 24, and a stirring rod 25. The rotating shaft 23 is located below the square insertion hole 16, and the top end of the rotating shaft 23 is inserted into the square insertion hole 16. The fixed flange 24 is located on the side of the rotating shaft 23 and is bolted to the bottom of the flange connection hole a14. The stirring rod 25 is located on the side of the rotating shaft 23. During the stirring operation, the rotating shaft 23 is inserted into the square insertion hole 16, and the fixing flange 24 is connected to the flange connection hole a14 by bolts. Then, the drive motor 12 drives the rotating shaft 23 to rotate, and the stirring rod 25 stirs the material in the filter bag 5 to fully mix it with the leachate. When replacing the filter mechanism after stirring, the mounting base 13 is taken out and lifted, and the material on the surface of the stirring rod 25 is rinsed into the filter bag 5 with the leachate. The filter bag can be replaced by disassembling it in the same way.

[0027] In summary, this device, consisting of an outer shell 3, an inner liner 4, a filter bag 5, a base motor 6, and a processing mechanism, can simultaneously leach and remove rare metals from fragmented and powdered materials. It achieves effective separation of the leachate and the material, while maximizing the recovery of residual leachate from the material, reducing the waste of rare metal elements and improving leaching efficiency. The filter bag 5 prevents material debris from remaining inside the device during the leaching process, facilitating cleaning and recycling.

[0028] The working principle of this utility model: When carrying out rare metal leaching operations, the material is put into the filter bag 5, and then the filter bag 5 is hoisted into the inner liner 4 by the hoisting equipment. The rotating shaft 23 is inserted into the square insertion hole 16, and the fixed flange 24 is connected to the flange connection hole a14 by bolts to install the stirring mechanism. The leachate is added into the interior of the outer shell 3 through the inlet pipe 1. The height of the inlet pipe 1 is higher than the height of the filter bag 5 opening. The leachate is discharged from top to bottom into the material inside the filter bag 5 through the water holes of the inner liner 4. The drive motor 12 drives the rotating shaft 23 to rotate, and the stirring rod 25 stirs the material in the filter bag 5 to make it fully mixed with the leachate. After the leaching time is reached, the leachate is discharged through the drain pipe 2. When replacing the filter mechanism after stirring is complete, remove the mounting base 13 and lift it up. Use the leaching solution to rinse the material on the surface of the stirring rod 25 into the filter bag 5. When leaching rare metals from materials with larger particle sizes, the stirring mechanism below the drive motor 12 is cleaned with the leaching solution and then removed. After that, the mounting base 13 is closed, and the base motor 6 is started to spin dry the water on the surface of the material in the filter bag 5 at high speed, thereby recovering the leaching solution remaining on the surface of the material. When leaching rare metals from materials with small particle size, the top of the screw 21 is inserted into the square insertion hole 16. Then, the sleeve a19 is connected to the flange connection hole b15 by threads to install the filter press mechanism. After that, the mounting base 13 is closed and the drive motor 12 is started. The drive motor 12 drives the screw 21 to rotate through the square insertion hole 16. The screw 21 rotates inside the sleeve b20 and drives the sleeve b20 to extend downward inside the sleeve a19 through the threads. The sleeve b20 drives the filter press plate 22 to press down the filter bag 5. The top of the filter press plate 22 and the fixing ring above the filter bag 5 are sealed by a sealing strip to prevent the material from flowing out from the gap between the filter press plate 22 and the fixing ring during the filter press process. The residual leachate in the material is discharged from the side of the filter bag 5 through the water hole of the inner liner 4 after filter press. The above two methods can also be used in combination. The choice of use depends on the particle size of the material and the compressibility of the dd drive motor. Through the above methods, the device can simultaneously leach and remove rare metals from fragmented and powdered materials, achieving effective separation of the leachate and the material, while maximizing the recovery of residual leachate in the material, reducing the waste of rare metal elements in the material, and improving leaching efficiency. The remaining material can be lifted directly with the hook and taken out together with the filter bag 5 for recycling, which prevents material debris from remaining inside the device during the leaching process and makes cleaning and recycling convenient. This concludes the description of the working principle of the device.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leaching and impurity removal device for rare metal smelting, comprising an inlet pipe (1), a drain pipe (2), and a device body, wherein the inlet pipe (1) is located on the upper left side of the device body, and the drain pipe (2) is located on the lower right side of the device body, characterized in that: The device body also includes an outer shell (3), an inner liner (4), a filter bag (5), a base motor (6), and a processing mechanism. The inner liner (4), which has water holes on its side, is rotatably mounted inside the outer shell (3). The filter bag (5) is mounted inside the inner liner (4). The base motor (6) is fixedly mounted at the bottom inside the outer shell (3). The upper output end of the base motor (6) is connected to the lower part of the inner liner (4). The processing mechanism is mounted above the outer shell (3). The base motor (6) is electrically connected to the production workshop controller.

2. The leaching and impurity removal apparatus for rare metal smelting according to claim 1, characterized in that: The filter bag (5) also includes filter cloth (7), fixing ring (8), support ring (9), support strip (10), and pull ring (11). The fixing ring is respectively set at the upper and lower ends of the support ring (9), the support ring (9) is respectively set between the fixing ring, the support strip (10) is vertically set between the fixing ring and the support ring (9), the filter cloth (7) is wrapped around the outside of the fixing ring, the support ring (9), and the support strip (10), and the pull ring (11) is rotatably set on the side of the fixing ring located above.

3. The leaching and impurity removal apparatus for rare metal smelting according to claim 1, characterized in that: The inner bottom of the inner liner (4) is provided with a circular groove that matches the fixing ring.

4. The leaching and impurity removal apparatus for rare metal smelting according to claim 1, characterized in that: The processing mechanism also includes a drive motor (12), a mounting base (13), a stirring mechanism, and a filter press mechanism. The drive motor (12) is located above the mounting base (13), which is detachably located above the outer casing (3). The front end of the drive motor (12) passes through the mounting base (13) and is rotatably connected to it. The stirring mechanism is detachably located below the mounting base (13), and the filter press mechanism is detachably located below the mounting base (13). The drive motor (12) is electrically connected to the production workshop control cabinet.

5. The leaching and impurity removal apparatus for rare metal smelting according to claim 4, characterized in that: The mounting base (13) further includes a flange connection hole a (14), a flange connection hole b (15), and a square insertion hole (16). The square insertion hole (16) is located at the center of the mounting base (13) below the output end of the drive motor (12). The flange connection hole a (14) is located on the side of the insertion hole on the output end of the drive motor (12). The flange connection hole b (15) is located on the side of the flange connection hole a (14) at the bottom of the mounting base (13).

6. The leaching and impurity removal apparatus for rare metal smelting according to claim 4, characterized in that: The mounting base (13) is connected to the top of the housing (3) by a tapered thread structure.

7. The leaching and impurity removal apparatus for rare metal smelting according to claim 4, characterized in that: A rotating seat (17) and a lifting lug (18) are provided above the mounting base (13).

8. The leaching and impurity removal apparatus for rare metal smelting according to claim 4, characterized in that: The filter press mechanism also includes sleeve a (19), sleeve b (20), screw (21), and filter press plate (22). The top of sleeve a (19) is connected to the bottom of flange connection hole b (15) through a flange. Sleeve b (20) is slidably sleeved on the inner side of sleeve a (19). Screw (21) is threadedly sleeved on the inner side of sleeve b (20). The lower end of screw (21) is connected to filter press plate (22). The upper end of screw (21) is inserted into square insertion hole (16).

9. A leaching and impurity removal apparatus for rare metal smelting according to claim 8, characterized in that: The bottom edge of the filter press (22) is also provided with an annular groove that matches the fixing ring, and a sealing strip is provided inside the annular groove.

10. A leaching and impurity removal apparatus for rare metal smelting according to claim 4, characterized in that: The stirring mechanism also includes a rotating shaft (23), a fixed flange (24), and a stirring rod (25). The rotating shaft (23) is located below the square insertion hole (16), and the top end of the rotating shaft (23) is inserted into the square insertion hole (16). The fixed flange (24) is located on the side of the rotating shaft (23) and is connected to the flange connection hole a (14) below by bolts. The stirring rod (25) is located on the side of the rotating shaft (23).

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