Copper anode slime impurity removal device

Abstract

The utility model relates to a copper anode mud impurity removal device which is characterized in that a cyclone overflow port is formed in the top of a cyclone, and the cyclone overflow port is connected with an anode mud storage tank; a flow stabilizing barrel is arranged at the inner top of the swirler, and the flow stabilizing barrel is communicated with the overflow port of the swirler; the bottom of the cyclone is provided with a cyclone underflow port, the cyclone underflow port is connected with the impurity storage tank, the bottom of the impurity storage tank is provided with the anode mud storage tank, and the vibrating screen is arranged between the impurity storage tank and the anode mud storage tank. When the device is used for separating, the operation is simple and convenient, the separation efficiency is high, the impurity content in the anode slime can be greatly reduced, the impurity removal rate is over 70 percent, and meanwhile, the noble metal content in the impurities is obviously reduced and does not exceed 15 percent.

Description

Technical Field

[0001] This utility model relates to the field of non-ferrous metal smelting and refining technology, specifically to a copper anode mud removal device. Background Technology

[0002] Copper anode slime is a byproduct of copper electrolytic refining. During copper electrolysis, the crude copper at the anode continuously dissolves, while precious metals such as gold and silver, as well as impurities like selenium and tellurium, do not dissolve. These substances detach from the anode and deposit at the bottom of the electrolytic cell, forming copper anode slime. The yield of copper anode slime is mainly affected by the impurity content of the crude copper. Generally, the lower the grade of the crude copper and the higher the impurity content, the higher the yield of copper anode slime. Typically, the yield of copper anode slime is 0.2-1%, but the actual yield varies depending on factors such as the source of the copper ore, the smelting process, and the composition of the crude copper. For example, when the crude copper contains a large amount of impurities such as selenium, tellurium, gold, and silver, the anode slime yield may approach or even exceed 1%. Furthermore, the surface of the crude copper anode also contains impurities such as anode plate casting release agent and sand. These impurities also detach and enter the copper anode slime during electrolysis, resulting in a high impurity content in the copper anode slime.

[0003] Copper anode sludge contains precious metals such as gold and silver, and has high recycling value. It is typically separated and impurities removed from the anode sludge to recover these precious metals. Currently, the main method for removing impurities from copper anode sludge is to slurry it and then filter it. However, this method has problems such as incomplete separation and high levels of precious metals in the separated impurities. Utility Model Content

[0004] In view of the problems of incomplete separation of anode mud and impurities and high content of precious metals in the separated impurities in the existing technology, the present invention provides a copper anode mud removal device that can effectively separate anode mud and impurities, and the content of precious metals in the separated impurities does not exceed 15%.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A copper anode mud impurity removal device includes an anode mud receiving tank, an anode mud conveying pump, a hydrocyclone, an anode mud slurry storage tank, an impurity storage tank, a vibrating screen, and an anode mud storage tank. The anode mud receiving tank has a slurry discharge port and a slurry discharge port at its lower part, and the slurry discharge port is connected to the inlet of the anode mud conveying pump. The hydrocyclone has a hydrocyclone inlet at its upper part, and the hydrocyclone inlet is connected to the outlet of the anode mud conveying pump. The hydrocyclone has a hydrocyclone overflow port at its top, and the hydrocyclone overflow port is connected to the anode mud storage tank. A flow stabilizing tank is located at the inner top of the hydrocyclone, and the flow stabilizing tank is connected to the hydrocyclone overflow port. The hydrocyclone has a hydrocyclone bottom outlet at its bottom, and the hydrocyclone bottom outlet is connected to the impurity storage tank. The impurity storage tank has an impurity storage tank outlet at its lower part. The vibrating screen is located between the impurity storage tank and the anode mud storage tank.

[0007] Furthermore, it also includes a support device, on which the hydrocyclone is disposed, the support device comprising a hydrocyclone base and a support frame.

[0008] Furthermore, a pneumatic switching valve is provided between the outlet of the anode mud conveying pump and the feed inlet of the hydrocyclone.

[0009] Furthermore, the screen mesh number of the vibrating screen is 50-150 mesh.

[0010] Furthermore, the bottom of the anode mud receiving tank is sloping, and the sewage outlet of the receiving tank is located at the bottom of the slope.

[0011] Furthermore, the flow stabilizing tank is equipped with a flow guide plate.

[0012] Furthermore, the feed inlet of the hydrocyclone is a concentric reducer.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention provides a copper anode mud impurity removal device. An anode mud slurry is transported from a receiving tank to a hydrocyclone via an anode mud conveying pump. Centrifugal force is used to separate fine anode mud particles from coarse impurities in the anode mud slurry, achieving initial separation of coarse and fine particles. A vibrating screen installed between the impurity storage tank and the anode mud storage tank further screens the material discharged from the hydrocyclone's underflow outlet, ensuring that the anode mud finally entering the anode mud storage tank is purer. Using this invention for separation is not only simple to operate and highly efficient, but it also significantly reduces the impurity content in the anode mud, achieving an impurity removal rate of over 70%. Simultaneously, the precious metal content in the impurities is also significantly reduced, not exceeding 15%. Attached Figure Description

[0015] The embodiments of this utility model will be further described below with reference to the accompanying drawings, wherein:

[0016] Figure 1 A schematic diagram of an embodiment of the copper anode mud removal device is shown;

[0017] Attached diagram labels: 1-Anode mud receiving tank, 2-Drainage outlet of receiving tank, 3-Outlet of receiving tank, 4-Anode mud conveying pump, 5-Pneumatic switch valve, 6-Hydrocyclone, 7-Hydrocyclone inlet, 8-Overflow outlet of hydrocyclone, 9-Stabilizing tank, 10-Underflow outlet of hydrocyclone, 11-Hydrocyclone base, 12-Anode mud storage tank, 13-Impurity storage tank, 14-Vibrating screen, 15-Anode mud storage tank, 16-Outlet of impurity storage tank, 17-Outlet of anode mud storage tank. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0019] Reference Appendix Figure 1 A copper anode mud removal device includes an anode mud receiving tank 1, an anode mud conveying pump 4, a hydrocyclone 6, an anode mud slurry storage tank 12, an impurity storage tank 13, a vibrating screen 14, and an anode mud storage tank 15. The lower part of the anode mud receiving tank 1 is provided with a receiving tank drain outlet 2 and a receiving tank outlet 3, the receiving tank outlet 3 being connected to the inlet of the anode mud conveying pump 4. The upper part of the hydrocyclone 6 is provided with a hydrocyclone inlet 7, the hydrocyclone inlet 7 being connected to the outlet of the anode mud conveying pump 4. The top of the hydrocyclone 6 is provided with a hydrocyclone overflow outlet 8. The overflow port 8 of the hydrocyclone is connected to the anode mud storage tank 12; the top of the hydrocyclone 6 is provided with a flow stabilizing tank 9, which is connected to the overflow port 8 of the hydrocyclone; the bottom of the hydrocyclone 6 is provided with a hydrocyclone bottom outlet 10, which is connected to an impurity storage tank 13, and the lower part of the impurity storage tank 13 is provided with an impurity storage tank outlet 16; the bottom of the impurity storage tank 13 is provided with an anode mud storage tank 15, and the lower part of the anode mud storage tank 15 is provided with an anode mud storage tank outlet 17; a vibrating screen 14 is provided between the impurity storage tank 13 and the anode mud storage tank 15.

[0020] In one embodiment of the present invention, a support device is also included. The cyclone separator 6 is disposed on the support device, which includes a cyclone separator base 11 and a support frame.

[0021] In one embodiment of this utility model, a pneumatic switch valve 5 is provided between the outlet of the anode mud conveying pump 4 and the hydrocyclone inlet 7.

[0022] In one embodiment of this utility model, the mesh size of the vibrating screen 14 is 50-150 mesh.

[0023] In one embodiment of this utility model, the bottom of the anode mud receiving tank 1 is sloping, and the drain outlet 2 of the receiving tank is located at the bottom of the slope, which facilitates the cleaning of the anode mud receiving tank 1.

[0024] In one embodiment of this utility model, a flow guide plate is provided inside the flow stabilizing tank 9.

[0025] In one embodiment of this utility model, the hydrocyclone inlet 7 is a concentric reducer.

[0026] In use, the anode mud in the anode mud receiving tank 1 enters the hydrocyclone 6 through the anode mud transfer pump 4. Under the action of centrifugal force, the fine particles in the anode mud gather towards the center with the anode mud, forming an upward internal vortex, and finally flow out from the hydrocyclone overflow port 8 at the top of the hydrocyclone 6 and into the anode mud storage tank 12. The coarse particles in the anode mud are thrown against the tank wall and move downward along the tank wall, and finally discharged from the hydrocyclone bottom outlet 10 at the bottom of the hydrocyclone 6 and enter the impurity storage tank 13, realizing the initial separation of coarse and fine particles in the anode mud. The coarse particles entering the impurity storage tank 13 are further separated by the vibrating screen 14. The small particles of anode mud in the coarse particles enter the anode mud storage tank 15 through the screen of the vibrating screen 14, while the large particles of impurities in the coarse particles remain in the impurity storage tank 12.

[0027] The impurity removal effect of this invention is shown in the table below.

[0028] Example 1 2 3 4 5 Anode mud concentration (%) 30 30 30 20 50 Impurity content (%) 20 20 20 20 20 Screen mesh count (mesh) 50 120 150 150 150 Impurity removal rate (%) 80 75 70 70 70 Precious metal content in impurities (%) 10 12 15 15 15

[0029] A comparison of Examples 1-5 shows that, in this invention, when the screen mesh size is 50-150 mesh, the impurity removal rate of the anode mud slurry exceeds 70%, and the precious metal content in the impurities does not exceed 15%. This invention can effectively reduce the impurity content in the anode mud slurry and achieve the separation of anode mud and impurities. A comparison of Examples 3-5 shows that, when processing materials with an anode mud slurry concentration of 20-50%, the anode mud slurry concentration has little impact on the impurity removal effect.

[0030] This invention provides a copper anode mud impurity removal device. An anode mud slurry is transported from a receiving tank to a hydrocyclone via an anode mud conveying pump. Centrifugal force is used to separate fine anode mud particles from coarse impurities in the anode mud slurry, achieving initial separation of coarse and fine particles. A vibrating screen installed between the impurity storage tank and the anode mud storage tank further screens the material discharged from the hydrocyclone's underflow outlet, ensuring that the anode mud finally entering the anode mud storage tank is purer. Using this invention for separation is not only simple to operate and highly efficient, but it also significantly reduces the impurity content in the anode mud, achieving an impurity removal rate of over 70%. Simultaneously, the precious metal content in the impurities is also significantly reduced, not exceeding 15%.

[0031] The foregoing description describes some exemplary embodiments of the present invention. It is understood that the above embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention. The features in these embodiments can be recombinated in a suitable manner, and the resulting solutions are still within the scope of protection claimed by the present invention. Based on the above embodiments, all other embodiments obtained by those skilled in the art without inventive effort, that is, all modifications, equivalent substitutions, and improvements made within the spirit and principles of this application, fall within the scope of protection claimed by the present invention.

Claims

1. A copper anode slime impurity removal device, characterized in that, The device comprises anode slime receiving tank (1), anode slime delivery pump (4), cyclone (6), anode slime slurry storage tank (12), impurity storage tank (13), vibrating screen (14) and anode slime storage tank (15); the lower part of the anode slime receiving tank (1) is provided with a receiving tank drain (2) and a receiving tank outlet (3), the receiving tank outlet (3) is connected to the inlet of the anode slime delivery pump (4); the upper part of the cyclone (6) is provided with a cyclone feed inlet (7), the cyclone feed inlet (7) is connected to the outlet of the anode slime delivery pump (4); the top of the cyclone (6) is provided with a cyclone overflow outlet (8), the cyclone overflow outlet (8) is connected to the anode slime slurry storage tank (12); the inner top of the cyclone (6) is provided with a steady flow barrel (9), the steady flow barrel (9) is in communication with the cyclone overflow outlet (8); the bottom of the cyclone (6) is provided with a cyclone underflow outlet (10), the cyclone underflow outlet (10) is connected to the impurity storage tank (13), the lower part of the impurity storage tank (13) is provided with an impurity storage tank outlet (16); the bottom of the impurity storage tank (13) is provided with the anode slime storage tank (15), the lower part of the anode slime storage tank (15) is provided with an anode slime storage tank outlet (17), the impurity storage tank (13) and the anode slime storage tank (15) are provided with the vibrating screen (14).

2. The copper anode slime impurity removal device according to claim 1, characterized in that, It also comprises a support device, the cyclone (6) is arranged on the support device, and the support device comprises a cyclone base (11) and a support frame.

3. The copper anode slime impurity removal device according to claim 1, characterized in that, A pneumatic switch valve (5) is arranged between the outlet of the anode slime delivery pump (4) and the cyclone feed inlet (7).

4. The copper anode slime impurity removal device according to claim 1, characterized in that, The mesh number of the screen of the vibrating screen (14) is 50-150.

5. The copper anode slime impurity removal device according to claim 1, characterized in that, The bottom of the anode slime receiving tank (1) is of a slope type, and the receiving tank drain (2) is arranged at the bottom of the slope.

6. The copper anode slime impurity removal device according to claim 1, characterized in that, A guide vane is arranged in the steady flow barrel (9).

7. The copper anode slime impurity removal device according to claim 1, characterized in that, The cyclone feed inlet (7) is a concentric reducer.

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