Mixing device of extraction box for copper extraction

By designing an extraction box mixing device for copper extraction and utilizing the synergistic effect of a rotating assembly, a vertical stirring assembly, and a lateral stirring assembly, the problem of uneven mixing in traditional mixing technology is solved, sufficient mixing of the extractant and the copper-containing solution is achieved, and the efficiency and purity of copper extraction are improved.

CN223422739UActive Publication Date: 2025-10-10DANXIA SMELTER OF SHENZHEN ZHONGJIN LINGNAN NONFEMET CO LTD
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Patent Information

Application Number
CN202422691046.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-05
Publication Date
2025-10-10
Estimated Expiration
2034-11-05

AI Technical Summary

Technical Problem

Traditional mixing technology relies on a single stirring device, which results in uneven mixing of the extractant and the copper-containing solution in three-dimensional space, affecting the extraction efficiency and the purity of the copper product.

Method used

An extraction box mixing device for copper extraction is designed, which adopts the synergistic effect of a rotating component, a vertical stirring component and a lateral stirring component to ensure that the extractant and the copper-containing solution are fully mixed in a three-dimensional space. It includes a mixing cylinder, a vertical stirring component and a lateral stirring component. The mixing effect is enhanced by the cooperation of the vertical stirring component and the lateral stirring component.

Benefits of technology

The mixing effect of the extractant and the copper-containing solution is significantly improved, ensuring mixing uniformity, thereby improving the efficiency and purity of copper extraction.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of copper extraction, in particular to an extraction box mixing device for copper extraction, which comprises a cabinet body, supporting legs, a mixing cylinder, a stand column, a top plate, a water outlet pipe, a rotating assembly, a vertical stirring assembly and a lateral stirring assembly, four supporting legs for supporting are fixedly connected to the lower end of the cabinet body, a stand column is installed on the left side of the cabinet body, a top plate is fixedly connected to the upper end of the stand column, a vertical stirring assembly is installed at the upper end of the top plate, and a rotating assembly for driving the mixing cylinder to rotate is installed in the cabinet body; the upper end of a turntable in the rotating assembly is fixedly connected with a mixing barrel for containing an extracting agent and a copper-containing solution, a lateral stirring assembly is mounted in the mixing barrel, and a water outlet pipe for conveying a mixed solution to the extraction box is mounted on the outer wall of the mixing barrel; through the synergistic effect of the vertical stirring assembly and the lateral stirring assembly, and the rotation assembly drives a solution in the mixing cylinder to rotate, the mixing effect of an extracting agent and a copper-containing solution is remarkably improved, and then subsequent extraction work is facilitated.
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Description

Technical Field

[0001] The utility model relates to the technical field of copper extraction, in particular to an extraction box mixing device for copper extraction. Background Art

[0002] In the delicate and complex process of copper extraction, ensuring that the extractant and the copper-containing solution are fully mixed is undoubtedly a crucial core link. This step is directly related to the extraction efficiency and the purity and quality of the final copper product.

[0003] However, traditional mixing technology generally relies on a single stirring device. This device is limited by its simple stirring mode and cannot achieve the comprehensive fusion of the extractant and the copper-containing solution in three-dimensional space, resulting in low stirring efficiency and uneven mixing. This directly leads to poor subsequent extraction effect, which in turn affects the extraction efficiency and purity of copper.

[0004] Therefore, in view of the fact that the above-mentioned traditional mixing technology generally relies on a single stirring equipment, which leads to low stirring efficiency and uneven mixing, an extraction box mixing device can be designed for copper extraction to achieve sufficient and uniform mixing of the extractant and the copper-containing solution in three-dimensional space, thereby improving the efficiency and effect of copper extraction. Utility Model Content

[0005] In order to overcome the problems of low stirring efficiency and uneven mixing, traditional mixing technology generally relies on a single stirring equipment.

[0006] The technical solution of the utility model is as follows: an extraction box mixing device for copper extraction comprises a cabinet body, legs, a mixing drum, a column, a top plate, a water outlet pipe, a rotating assembly, a vertical stirring assembly and a lateral stirring assembly; four legs for support are fixedly connected to the lower end of the cabinet body, a column is installed on the left side of the cabinet body, the upper end of the column is fixedly connected to the top plate, the upper end of the top plate is installed with a vertical stirring assembly, a rotating assembly for driving the mixing drum to rotate is installed in the cabinet body, the upper end of the turntable in the rotating assembly is fixedly connected to a mixing drum for holding an extractant and a copper-containing solution, a lateral stirring assembly is installed in the mixing drum, and a water outlet pipe for conveying the mixed liquid to the extraction box is installed on the outer wall of the mixing drum.

[0007] Preferably, the cabinet is the main structure of the entire device, which provides a sturdy support platform. The support legs are components connecting the cabinet and the ground, which support and stabilize the entire device. The mixing drum is used to hold the extractant and the copper-containing solution and mix them. The mixing drum is made of corrosion-resistant and wear-resistant materials, such as stainless steel. The mixing drum has sufficient volume and stirring space to ensure that the extractant and the copper-containing solution can be fully mixed. The columns support and fix the top plate. The top plate provides a platform for installing a vertical stirring assembly. The water outlet pipe is a component connecting the mixing drum and the extraction box. It is used to transport the mixed liquid to the extraction box for extraction. The rotating assembly is a component that drives the mixing drum to rotate. The vertical stirring assembly is used to perform vertical stirring in the mixing drum, which can ensure that the liquid in the mixing drum is fully mixed. The lateral stirring assembly is used to perform lateral stirring in the mixing drum to produce a lateral stirring effect. Combined with the action of the vertical stirring assembly, the mixing effect of the liquid in the mixing drum can be further enhanced.

[0008] Preferably, a rotating support seat is fixedly connected to the bottom of the cabinet body, a support plate is fixedly connected to the right inner wall of the cabinet body, and a No. 1 rotating motor is installed on the upper end of the support plate. The output shaft of the No. 1 rotating motor is connected to the right end of the No. 1 coupling, and the left end of the No. 1 coupling is connected to the right end of the rotating shaft. The rotating support seat serves as the center point of support and rotation. It provides a stable base for supporting the support shaft in the rotating assembly and ensuring that it can rotate smoothly and smoothly. The support plate supports and fixes the No. 1 rotating motor, ensuring that the motor can be stably installed in the cabinet body. The No. 1 rotating motor serves as the power source of the rotating assembly, providing rotational power, which is transmitted to the rotating shaft through the No. 1 coupling.

[0009] Preferably, the rotating assembly includes a support shaft and a turntable; the support shaft is rotatably connected in the rotating support seat, and the upper end of the support shaft is fixedly connected to the turntable. The support shaft serves as a connecting component between the turntable and the cabinet body, and plays the role of transmitting rotational power, transmitting the rotational power of the No. 1 rotating motor to the turntable, so that the turntable can rotate smoothly. The turntable is the supporting platform of the mixing drum, which is used to carry and fix the mixing drum so that it can rotate with the support shaft.

[0010] Preferably, a driving bevel gear is fixedly connected to the outer wall of the left end of the rotating shaft, and a driven bevel gear is fixedly connected to the lower end of the supporting shaft. The driving bevel gear is meshed with the driven bevel gear, and the driving bevel gear plays the role of transmitting rotational power. The rotational power of the No. 1 rotating motor is transmitted to the driving bevel gear through the No. 1 coupling and the rotating shaft, thereby driving the rotation of the driven bevel gear and the support shaft. The driven bevel gear receives the rotational power transmitted by the driving bevel gear and transmits it to the support shaft and the turntable, so that the turntable can rotate smoothly.

[0011] Preferably, the vertical stirring assembly includes a No. 2 rotating motor, a No. 2 coupling, a vertical stirring shaft and stirring blades; the No. 2 rotating motor is installed on the upper end of the top plate, the output shaft of the No. 2 rotating motor is connected to the upper end of the No. 2 coupling, the lower end of the No. 2 coupling is connected to the vertical stirring shaft and the vertical stirring shaft extends downward into the mixing barrel, the outer wall of the vertical stirring shaft rotates around a circle and is fixedly connected with stirring blades at equal intervals, and the stirring blades are distributed along the axial direction of the vertical stirring shaft. The No. 2 rotating motor serves as the power source of the vertical stirring assembly, provides rotational power, and drives the vertical stirring shaft The stirring blades thereon rotate, thereby achieving stirring and mixing of the mixed liquid in the mixing barrel. The vertical stirring shaft is the support and rotating component of the stirring blades. As the carrier of the stirring blades, the vertical stirring shaft rotates under the drive of the No. 2 rotating motor, driving the stirring blades to stir and mix the mixed solution in the mixing barrel. The stirring blades are the main working parts of the vertical stirring assembly. The extractant and the copper-containing solution in the mixing barrel are stirred and mixed by rotation, so that the extractant and the copper-containing solution are more evenly and fully mixed together, which is convenient for subsequent extraction work.

[0012] Preferably, the outer wall of the mixing drum is fixedly connected to a box bin, and a No. 3 rotating motor is installed in the box bin. The box bin provides an installation platform for the No. 3 rotating motor and protects the No. 3 rotating motor from interference and damage from the external environment. The No. 3 rotating motor is the power source of the side stirring assembly, providing rotational power to drive the side stirring shaft and stirring plate for stirring.

[0013] Preferably, the lateral stirring assembly includes a No. 3 coupling, a lateral stirring shaft and a stirring plate; the output shaft of the No. 3 rotating motor is connected to the right end of the No. 3 coupling, the left end of the No. 3 coupling is connected to the lateral stirring shaft and the lateral stirring shaft extends inward into the mixing drum, the outer wall of the lateral stirring shaft is fixedly connected with the stirring plate, the No. 3 coupling is connected between the output shaft of the No. 3 rotating motor and the lateral stirring shaft, and plays the role of transmitting rotational power. The lateral stirring shaft serves as a carrier of the stirring plate and rotates under the drive of the No. 3 rotating motor, driving the stirring plate to stir the mixed solution in the mixing drum laterally. The stirring plate is the main working part of the lateral stirring assembly, and stirs the mixed solution in the mixing drum laterally by rotating, so that the mixed solution is more evenly and fully mixed together, while improving the stirring and mixing effect.

[0014] Beneficial effects of the utility model:

[0015] 1. The extraction box mixing device for copper extraction significantly improves the mixing effect of the extractant and the copper-containing solution, thereby facilitating subsequent extraction work. Through the synergistic effect of the vertical stirring component and the lateral stirring component, it ensures that the liquid in the mixing cylinder is fully and evenly stirred, thereby improving the mixing effect;

[0016] 2. With the help of the function of the rotating component, the solution in the mixing barrel is rotated, and the vertical stirring component rotating in the opposite direction generates shear force, thereby enhancing the stirring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the extraction box mixing device for copper extraction of the present invention;

[0018] Figure 2 Shown is a front view schematic diagram of an extraction box mixing device for copper extraction of the present invention;

[0019] Figure 3 Shown is a top view of the extraction box mixing device for copper extraction of the present invention;

[0020] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the rotating assembly of the extraction box mixing device for copper extraction of the present invention;

[0021] Figure 5 Shown is a schematic diagram of the three-dimensional structure of the vertical stirring assembly of the extraction box mixing device for copper extraction of the present invention;

[0022] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the lateral stirring assembly of the extraction box mixing device for copper extraction of the present invention.

[0023] Explanation of the accompanying symbols: 1. Cabinet; 2. Support leg; 3. Mixing drum; 4. Column; 5. Top plate; 6. Water outlet pipe; 7. Rotating support seat; 8. Support plate; 9. Rotating motor No. 1; 10. Coupling No. 1; 11. Rotating shaft; 12. Support shaft; 13. Turntable; 14. Driving bevel gear; 15. Driven bevel gear; 16. Rotating motor No. 2; 17. Coupling No. 2; 18. Vertical stirring shaft; 19. Stirring fan blade; 20. Bin; 21. Rotating motor No. 3; 22. Coupling No. 3; 23. Lateral stirring shaft; 24. Stirring plate. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See also Figures 1-6The utility model provides an embodiment: an extraction box mixing device for copper extraction, comprising a cabinet 1, legs 2, a mixing drum 3, columns 4, a top plate 5, a water outlet pipe 6, a rotating assembly, a vertical stirring assembly and a lateral stirring assembly; the lower end of the cabinet 1 is fixedly connected to four legs 2 for support, the left side of the cabinet 1 is installed with a column 4, the upper end of the column 4 is fixedly connected to the top plate 5, the upper end of the top plate 5 is installed with a vertical stirring assembly, a rotating assembly for driving the mixing drum 3 to rotate is installed in the cabinet 1, the upper end of the turntable 13 in the rotating assembly is fixedly connected to the mixing drum 3 for holding the extractant and the copper-containing solution, the mixing drum 3 is installed with a lateral stirring assembly, and the outer wall of the mixing drum 3 is installed with a water outlet pipe 6 for conveying the mixed liquid to the extraction box, the cabinet 1 is the main structure of the entire device, which provides a solid supporting platform, and the legs 2 are components connecting the cabinet 1 and the ground, which play a role in supporting and stabilizing the entire device. The function of each device is that the mixing drum 3 is used to hold the extractant and the copper-containing solution and mix them. The mixing drum 3 is made of corrosion-resistant and wear-resistant materials, such as stainless steel. The mixing drum 3 has sufficient volume and stirring space to ensure that the extractant and the copper-containing solution can be fully mixed. The column 4 supports and fixes the top plate 5. The top plate 5 provides a platform for installing the vertical stirring assembly. The outlet pipe 6 is a component connecting the mixing drum 3 and the extraction box. It is used to transport the mixed liquid to the extraction box for extraction. The rotating assembly is a component that drives the mixing drum 3 to rotate. The vertical stirring assembly is used to perform vertical stirring in the mixing drum 3 to ensure that the liquid in the mixing drum 3 is fully mixed. The lateral stirring assembly is used to perform lateral stirring in the mixing drum 3 to produce a lateral stirring effect. Cooperating with the function of the vertical stirring assembly, the mixing effect of the liquid in the mixing drum 3 can be further enhanced.

[0026] See also Figure 4The gear 13 is connected to the first gear 11 and the second gear 12 is connected to the first gear 13. In this embodiment, the bottom of the cabinet 1 is fixedly connected with a rotating support seat 7, the right inner wall of the cabinet 1 is fixedly connected with a support plate 8, the upper end of the support plate 8 is installed with a No. 1 rotating motor 9, the output shaft of the No. 1 rotating motor 9 is connected to the right end of the No. 1 coupling 10, and the left end of the No. 1 coupling 10 is connected to the right end of the rotating shaft 11. The rotating assembly includes a support shaft 12 and a turntable 13; the rotating support seat 7 is rotatably connected with the support shaft 12, the upper end of the support shaft 12 is fixedly connected to the turntable 13, the left end outer wall of the rotating shaft 11 is fixedly connected with a driving bevel gear 14, and the lower end of the support shaft 12 is fixedly connected with a driven bevel gear 15, and the driving bevel gear 14 is meshed with the driven bevel gear 15. The rotating support seat 7 serves as the center point of support and rotation. It provides a stable base for supporting the support shaft 12 in the rotating assembly and ensuring that it can rotate smoothly and smoothly. The support plate 8 plays the role of supporting and fixing the No. 1 rotating motor 9. The function is to ensure that the motor can be stably installed in the cabinet 1. The No. 1 rotating motor 9 serves as the power source of the rotating component, providing rotational power, which is transmitted to the rotating shaft 11 through the No. 1 coupling 10. The support shaft 12 serves as a connecting component between the turntable 13 and the cabinet 1, and plays the role of transmitting rotational power, and transmits the rotational power of the No. 1 rotating motor 9 to the turntable 13, so that the turntable 13 can rotate smoothly. The turntable 13 is the supporting platform of the mixing drum 3, which is used to carry and fix the mixing drum 3 so that it can rotate with the support shaft 12. The active bevel gear 14 plays the role of transmitting rotational power. The rotational power of the No. 1 rotating motor 9 is transmitted to the active bevel gear 14 through the No. 1 coupling 10 and the rotating shaft 11, thereby driving the rotation of the driven bevel gear 15 and the support shaft 12. The driven bevel gear 15 receives the rotational power transmitted by the active bevel gear 14, and transmits it to the support shaft 12 and the turntable 13, so that the turntable 13 can rotate smoothly.

[0027] See also Figure 5In this embodiment, the vertical stirring assembly includes a No. 2 rotary motor 16, a No. 2 coupling 17, a vertical stirring shaft 18 and stirring blades 19; the No. 2 rotary motor 16 is installed on the upper end of the top plate 5, the output shaft of the No. 2 rotary motor 16 is connected to the upper end of the No. 2 coupling 17, the lower end of the No. 2 coupling 17 is connected to the vertical stirring shaft 18, and the vertical stirring shaft 18 extends downward into the mixing drum 3. The outer wall of the vertical stirring shaft 18 is fixedly connected with stirring blades 19 at equal intervals around a circle, and the stirring blades 19 are distributed along the axial direction of the vertical stirring shaft 18. The No. 2 rotary motor 16 serves as the power source of the vertical stirring assembly and provides rotational power. The vertical stirring shaft 18 and the stirring blades 19 thereon are driven to rotate, thereby achieving stirring and mixing of the mixed liquid in the mixing drum 3. The vertical stirring shaft 18 is the supporting and rotating component of the stirring blades 19. As the carrier of the stirring blades 19, the vertical stirring shaft 18 is driven by the No. 2 rotating motor 16 to rotate, driving the stirring blades 19 to stir and mix the mixed solution in the mixing drum 3. The stirring blades 19 are the main working components of the vertical stirring assembly. By rotating, the extractant and the copper-containing solution in the mixing drum 3 are stirred and mixed, so that the extractant and the copper-containing solution are more evenly and fully mixed together, which is convenient for subsequent extraction work.

[0028] See also Figure 6 In this embodiment, the outer wall of the mixing drum 3 is fixedly connected with a box bin 20, and a No. 3 rotating motor 21 is installed in the box bin 20. The side stirring assembly includes a No. 3 coupling 22, a side stirring shaft 23 and a stirring plate 24; the output shaft of the No. 3 rotating motor 21 is connected to the right end of the No. 3 coupling 22, and the left end of the No. 3 coupling 22 is connected to the side stirring shaft 23 and the side stirring shaft 23 extends inwardly into the mixing drum 3. The outer wall of the side stirring shaft 23 is fixedly connected with a stirring plate 24. The box bin 20 provides a mounting platform for the No. 3 rotating motor 21 and protects the No. 3 rotating motor 21 from interference and damage from the external environment. The No. 3 rotating motor 21 is The power source of the lateral stirring assembly provides rotational power to drive the lateral stirring shaft 23 and the stirring plate 24 for stirring. The No. 3 coupling 22 is connected between the output shaft of the No. 3 rotating motor 21 and the lateral stirring shaft 23, and plays the role of transmitting rotational power. The lateral stirring shaft 23 serves as the carrier of the stirring plate 24. It rotates under the drive of the No. 3 rotating motor 21, driving the stirring plate 24 to stir the mixed solution in the mixing drum 3 laterally. The stirring plate 24 is the main working part of the lateral stirring assembly. By rotating, the mixed solution in the mixing drum 3 is stirred laterally, so that the mixed solution is more evenly and fully mixed together, while improving the stirring and mixing effect.

[0029] During the working process, the staff first pours the extractant and the copper-containing solution into the mixing drum 3. Then, the No. 1 rotating motor 9, the No. 2 rotating motor 16, and the No. 3 rotating motor 21 are started in sequence. The No. 1 rotating motor 9 causes the rotating shaft 11 to rotate, which in turn drives the driving bevel gear 14 to rotate. Through the meshing of the gears, the driven bevel gear 15 rotates accordingly, and the support shaft 12, the turntable 13, and the entire mixing drum 3 begin to rotate.

[0030] At the same time, the second rotary motor 16 drives the vertical stirring shaft 18 to rotate, and the stirring blades 19 stir and mix the solution in the mixing drum 3. At this time, the third rotary motor 21 is also started, driving the lateral stirring shaft 23 to rotate, and the stirring plate 24 further stirs and mixes the solution in the mixing drum 3, thereby achieving a more efficient stirring effect.

[0031] The mixed liquid after stirring and mixing is transported through the water outlet pipe 6 to the extraction box to start the extraction process.

[0032] Through the above steps, the extraction box mixing device for copper extraction significantly improves the mixing effect of the extractant and the copper-containing solution through the synergistic effect of the vertical stirring component and the lateral stirring component, and the rotating component drives the solution in the mixing barrel 3 to rotate, and is combined with the vertical stirring component rotating in the opposite direction, thereby jointly generating shear force, ensuring that the liquid is fully and evenly stirred, thereby facilitating subsequent extraction work and enhancing the stirring effect, solving the problem of low stirring efficiency and uneven mixing caused by traditional mixing technology generally relying on a single stirring device.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present invention.

Claims

1. An extraction box mixing device for copper extraction, comprising a cabinet (1), a support leg (2) and a mixing cylinder (3); characterized in that: The cabinet (1) further comprises a column (4), a top plate (5), a water outlet pipe (6), a rotating assembly, a vertical stirring assembly and a lateral stirring assembly; the lower end of the cabinet (1) is fixedly connected to four supporting legs (2), the left side of the cabinet (1) is provided with a column (4), the upper end of the column (4) is fixedly connected to the top plate (5), the upper end of the top plate (5) is provided with a vertical stirring assembly, a rotating assembly for driving the mixing drum (3) to rotate is provided in the cabinet (1), the upper end of the turntable (13) in the rotating assembly is fixedly connected to the mixing drum (3) for containing the extractant and the copper-containing solution, the mixing drum (3) is provided with a lateral stirring assembly, and the outer wall of the mixing drum (3) is provided with a water outlet pipe (6) for conveying the mixed liquid to the extraction box.

2. The extraction box mixing device for copper extraction according to claim 1, characterized in that: The bottom of the cabinet (1) is fixedly connected to a rotating support seat (7), the right inner wall of the cabinet (1) is fixedly connected to a support plate (8), the upper end of the support plate (8) is installed with a No. 1 rotating motor (9), the output shaft of the No. 1 rotating motor (9) is connected to the right end of the No. 1 coupling (10), and the left end of the No. 1 coupling (10) is connected to the right end of the rotating shaft (11).

3. The extraction box mixing device for copper extraction according to claim 2, characterized in that: The rotating assembly comprises a support shaft (12) and a turntable (13); the support shaft (12) is rotatably connected inside the rotating support seat (7), and the upper end of the support shaft (12) is fixedly connected to the turntable (13).

4. The extraction box mixing device for copper extraction according to claim 3, characterized in that: The outer wall of the left end of the rotating shaft (11) is fixedly connected with a driving bevel gear (14), and the lower end of the supporting shaft (12) is fixedly connected with a driven bevel gear (15), and the driving bevel gear (14) is meshed with the driven bevel gear (15).

5. The extraction box mixing device for copper extraction according to claim 4, characterized in that: The vertical stirring assembly comprises a No. 2 rotary motor (16), a No. 2 coupling (17), a vertical stirring shaft (18) and stirring blades (19); the No. 2 rotary motor (16) is installed on the upper end of the top plate (5); the output shaft of the No. 2 rotary motor (16) is connected to the upper end of the No. 2 coupling (17); the lower end of the No. 2 coupling (17) is connected to the vertical stirring shaft (18), and the vertical stirring shaft (18) extends downward into the mixing barrel (3); the outer wall of the vertical stirring shaft (18) is equidistantly fixedly connected with stirring blades (19) around a circle, and the stirring blades (19) are distributed along the axial direction of the vertical stirring shaft (18).

6. The extraction box mixing device for copper extraction according to claim 5, characterized in that: The outer wall of the mixing barrel (3) is fixedly connected to a box bin (20), and a No. 3 rotating motor (21) is installed in the box bin (20).

7. The extraction box mixing device for copper extraction according to claim 6, characterized in that: The lateral stirring assembly comprises a No. 3 coupling (22), a lateral stirring shaft (23) and a stirring plate (24); the output shaft of the No. 3 rotating motor (21) is connected to the right end of the No. 3 coupling (22); the left end of the No. 3 coupling (22) is connected to the lateral stirring shaft (23), and the lateral stirring shaft (23) extends inwardly into the mixing barrel (3); the outer wall of the lateral stirring shaft (23) is fixedly connected to the stirring plate (24).