Copper powder separation chute for separating copper powder in anode slime generated by passivated anode plate

Abstract

The utility model relates to a copper powder separation chute which is used for separating copper powder in anode slime generated by a passivated anode plate. Wherein an opening is formed in the upper portion of the copper powder separation chute, one end of the copper powder separation chute is a liquid inlet end, and liquid is injected into the liquid inlet end of the copper powder separation chute through a liquid inlet pipe arranged above the copper powder separation chute; the copper powder separation chute is a special-shaped chute body and comprises one or more separation chute sections, and each separation chute section comprises a bottom, a liquid inlet end side wall, vertical upward side walls parallel to the two sides of the liquid flow direction, an overflow end at the other end where the liquid flows out and an overflow opening. The bottom and the horizontal plane form an angle, namely the bottom in the flowing direction of liquid forms an upward slope, and the end, close to the liquid inlet end, of the bottom is lower than the other end, close to the overflow opening, of the bottom. According to the copper powder separation chute disclosed by the utility model, the light anode mud overflows to the next gradient and the copper powder is settled and separated in the process that the passivated anode mud climbs up a slope and overflows backwards by utilizing the density difference and different settling velocities of the copper powder and the light anode mud in the passivated anode mud.

Description

Technical Field

[0001] The utility model relates to the technical field of copper electrolytic refining, in particular to a copper powder separation chute used for separating copper powder from anode mud generated by passivating anode plates. Background Art

[0002] During the copper electrolytic refining process, the copper anode will continue to dissolve, and some insoluble impurities such as arsenic, antimony, bismuth, lead, etc. will adhere to the remaining copper anode in the form of anode mud. As the copper anode dissolves, it gradually disintegrates and falls to the bottom of the electrolytic cell, forming anode mud.

[0003] The composition of copper anode plates influences the copper electrolytic refining process. The copper anodes used in copper electrolytic refining are complex in composition. Large quantities of recycled copper and low-impurity copper are smelted to produce copper anodes with high copper content (≥99.5%) and low arsenic content (≤0.01%). Anode passivation is a common phenomenon during the electrolytic process, resulting in slow or no dissolution of the copper anode. This, combined with the formation of large amounts of copper powder on the anode surface, can be incorporated into the copper anode mud.

[0004] Under normal circumstances, copper anode mud from copper electrolytic refining contains 10-20% copper. However, anode mud from passivated copper anodes can contain as much as 30-50% copper. This anode mud contains copper in the form of pure copper powder, with particles ranging in size from 400 to 800 mesh. This extremely high copper content can negatively impact the direct yield of copper electrolytic refining. Furthermore, high-copper anode mud can cause significant economic losses to copper electrolytic refining companies during sales due to the copper pricing factor.

[0005] Separating copper powder from anode mud is crucial. However, the current treatment method for high-copper anode mud in the industry is acid dissolution, rather than physical separation of copper powder. Therefore, a cost-effective and efficient physical separation solution is urgently needed to separate copper powder from anode mud. Summary of the Invention

[0006] The technical problem to be solved by the utility model is how to efficiently separate copper powder from anode mud by physical separation.

[0007] In order to solve the above technical problems, the utility model provides a copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates, wherein the copper powder separation chute is open at the top and has two ends, one end is a liquid inlet end, and liquid is injected into the liquid inlet end of the copper powder separation chute by a liquid inlet pipe arranged above the copper powder separation chute; wherein the copper powder separation chute is a special-shaped trough body, including one or more separation chute sections, and the separation chute section includes: a bottom, a liquid inlet end side wall, and two opposite vertical upward side walls parallel to the liquid flow direction, the other end where the liquid flows out is an overflow end, which has an overflow port for liquid overflow The bottom is angled with the horizontal plane, that is, the bottom is inclined upward in the direction of liquid flow, and one end of the bottom close to the liquid inlet is lower than the other end of the bottom close to the overflow port. When the liquid flowing out of the liquid inlet pipe is anode mud slurry produced by passivating the anode plate, the liquid continuously flows from the liquid inlet end to the overflow end, and the liquid climbs upward along the bottom slope. Due to the high density of copper powder, the copper powder in the anode mud slurry is settled. At the same time, due to the increase of mud at the liquid inlet end, the liquid inlet end is impacted, and the light anode mud deposited at the bottom deep at the liquid inlet end is continuously stirred up and flows out of the overflow port along with the anode mud liquid, thereby realizing the physical separation of copper powder and anode mud.

[0008] According to an embodiment of the present invention, multiple separation chute sections can be connected in sequence along the direction of liquid flow, that is, the liquid inlet of the latter section is the overflow port of the previous section, and the overflow end of the last section is the outlet of the copper powder separation chute.

[0009] According to an embodiment of the present invention, the plurality of separation chute sections may be three sections, namely, a first separation chute section, a second separation chute section, and a third separation chute section.

[0010] According to an embodiment of the present invention, the angle between the bottom of the separation chute section and the horizontal plane may be in the range of 5° to 18°.

[0011] According to an embodiment of the present invention, the bottom of the first separation chute section may form an angle of 16.7° with the horizontal plane; the bottom of the second separation chute section may form an angle of 11.3° with the horizontal plane; and the bottom of the first separation chute section may form an angle of 5.7° with the horizontal plane.

[0012] According to an embodiment of the present invention, the lowest positions of the liquid inlet ends of each separation chute section may be at the same height.

[0013] According to the embodiment of the present invention, the angle between the bottom of the separation chute section and the horizontal plane decreases successively along the direction of liquid flow, keeping the liquid inlet of each separation chute section higher than the overflow port of the overflow end to maintain the flow direction of the liquid.

[0014] According to the embodiment of the present invention, the side wall of the liquid inlet end of the separation chute section can be arranged vertically to form a vertical height difference between the liquid inlet end and the bottom, so that the liquid flowing into the liquid inlet end will impact the bottom material when it falls, causing the light material at the bottom to float, climb along the bottom, and flow out from the overflow port. By utilizing the density difference of the material in the liquid, the high-density copper powder is retained at the bottom near the liquid inlet end at a low height.

[0015] According to an embodiment of the present invention, an opening valve may be provided on the liquid inlet pipe provided above the copper powder separation chute to control the flow rate of liquid flowing into the liquid inlet end of the copper powder separation chute.

[0016] According to an embodiment of the present invention, the liquid flowing out of the liquid inlet pipe is an electrolyte or a passivated anode mud slurry or clean water.

[0017] According to an embodiment of the present invention, the copper content of the passivated anode mud of the copper powder to be separated flowing out of the liquid inlet pipe may be 20-50%.

[0018] According to an embodiment of the present invention, the inner diameter of the liquid inlet pipe may be 50 mm.

[0019] According to an embodiment of the present invention, when multiple separation chute sections are three sections, they can be set to three sections with different slope gradients, wherein the liquid inlet end of the first separation chute section has an upper surface depth of 400mm, an overflow end depth of 100mm, an overall length of 1000mm, and an overall width of 200mm; the liquid inlet end of the second separation chute section has a depth of 400mm, an overflow end depth of 200mm, an overall length of 1000mm, and an overall width of 200mm, and the overflow section of the first separation chute section is 300mm away from the deepest point of the liquid inlet end of the second separation chute section; the liquid inlet end of the third separation chute section has a depth of 400mm, an overflow end depth of 300mm, an overall length of 1000mm, and an overall width of 200mm, and the overflow section of the second separation chute section is 200mm away from the deepest point of the liquid inlet end of the third separation chute section.

[0020] Compared with the prior art, the technical solution provided by the embodiments of the present invention can achieve at least the following beneficial effects:

[0021] The copper powder separation chute provided by this utility model is configured with one or more sections and an upwardly inclined bottom. This utilizes the difference in density between copper powder and light anode mud in the passivated anode mud, resulting in different settling rates in the anode mud. As the passivated anode mud climbs the slope and overflows backward, the copper powder settles while the light anode mud overflows downward. This allows for the separation of copper powder from the anode mud produced by the passivated anode plate, contributing to a certain reduction in the copper content of the anode mud.

[0022] The copper powder separation chute provided by the utility model patent is provided with three copper powder separation sections, and the three sections with different slope shapes are provided at the front, middle and end. The slope in each copper powder separation section is different, and the copper powder is further separated and settled step by step through the subsequent slope; finally, the copper powder is settled at the bottom of the copper powder separation chute, and the other light anode mud flows out of the copper powder separation chute through overflow, which can realize the stage-by-stage sedimentation of the copper powder in the anode mud.

[0023] The copper powder separation chute provided by the utility model adopts a deep front and shallow back mode, with each section having a greater depth at the liquid inlet end, which can form anode mud sedimentation, and the overflow port connected to the previous section can use the overflow port impact to continuously stir up the light anode mud deposited at the bottom deep in the liquid inlet end and overflow to the next section along with the anode mud slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, rather than limiting the present invention.

[0025] Figure 1 1 is a schematic diagram showing a front view of a copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to the present invention;

[0026] Figure 2 yes Figure 1 A top view of

[0027] Figure 3 yes Figure 1 Left view of . DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar expressions used in the specification and claims of this utility model patent application do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation on quantity, but rather indicate the presence of at least one.

[0030] Figure 1 1 is a schematic diagram showing a front view of a copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to the present invention; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 1 Left view of .

[0031] like Figures 1 to 3 As shown, a copper powder separation chute is used to separate copper powder from anode mud produced by passivating anode plates, wherein the copper powder separation chute is open at the top and has two ends, one end being a liquid inlet end, and liquid is injected into the liquid inlet end of the copper powder separation chute by a liquid inlet pipe 6 arranged above the copper powder separation chute.

[0032] Among them, the copper powder separation chute is a special-shaped trough body, including one or more separation chute sections. The separation chute section includes: a bottom, a liquid inlet end side wall, and two opposite vertical upward side walls parallel to the liquid flow direction. The other end where the liquid flows out is the overflow end, which has an overflow port 4 for liquid overflow and outflow.

[0033] Among them, the bottom is at an angle to the horizontal plane, that is, the bottom is inclined upward in the direction of liquid flow, and the end of the bottom close to the liquid inlet end is lower than the other end of the bottom close to the overflow port 4. When the liquid flowing out of the liquid inlet pipe 6 is anode mud slurry produced by passivating the anode plate, the liquid continuously flows from the liquid inlet end to the overflow end, and the liquid climbs upward along the bottom slope. Due to the high density of copper powder, the copper powder in the anode mud slurry is settled. At the same time, due to the increase of mud at the liquid inlet end, the liquid inlet end is impacted, and the light anode mud deposited at the bottom deep at the liquid inlet end is continuously stirred up and flows out of the overflow port 4 along with the anode mud liquid, thereby realizing the physical separation of copper powder and anode mud.

[0034] The copper powder separation chute provided by this utility model is configured with one or more sections and an upwardly inclined bottom. This utilizes the difference in density between copper powder and light anode mud in the passivated anode mud, resulting in different settling rates in the anode mud. As the passivated anode mud climbs the slope and overflows backward, the copper powder settles while the light anode mud overflows downward. This allows for the separation of copper powder from the anode mud produced by the passivated anode plate, contributing to a certain reduction in the copper content of the anode mud.

[0035] According to one or some embodiments of the present invention, multiple separation chute sections are connected in sequence along the direction of liquid flow, that is, the liquid inlet 5 of the latter section is the overflow port 4 of the previous section, and the overflow end of the last section is the outlet of the copper powder separation chute.

[0036] According to one or some embodiments of the present invention, the plurality of separation chute sections are three sections, namely, a first separation chute section 1 , a second separation chute section 2 , and a third separation chute section 3 .

[0037] According to one or some embodiments of the present invention, the angle between the bottom of the separation chute section and the horizontal plane is in the range of 5° to 18°.

[0038] According to one or some embodiments of the present invention, the bottom of the first separation chute section 1 forms an angle of 16.7° with the horizontal plane; the bottom of the second separation chute section 2 forms an angle of 11.3° with the horizontal plane; and the bottom of the first separation chute section 1 forms an angle of 5.7° with the horizontal plane.

[0039] The copper powder separation chute provided by the utility model patent is provided with three copper powder separation sections, and the three sections with different slope shapes are provided at the front, middle and end. The slope in each copper powder separation section is different, and the copper powder is further separated and settled step by step through the subsequent slope; finally, the copper powder is settled at the bottom of the copper powder separation chute, and the other light anode mud flows out of the copper powder separation chute through overflow, which can realize the stage-by-stage sedimentation of the copper powder in the anode mud.

[0040] According to one or some embodiments of the present invention, when multiple separation chute sections are three sections, they are set to three sections with different slope gradients, wherein the liquid inlet end of the first separation chute section 1 has an upper surface depth of 400mm, an overflow end depth of 100mm, an overall length of 1000mm, and an overall width of 200mm; the liquid inlet end of the second separation chute section 2 has a depth of 400mm, an overflow end depth of 200mm, an overall length of 1000mm, and an overall width of 200mm, and the overflow section of the first separation chute section 1 is 300mm deep from the liquid inlet end of the second separation chute section 2; the liquid inlet end of the third separation chute section 3 is 400mm deep, an overflow end depth of 300mm, an overall length of 1000mm, and an overall width of 200mm, and the overflow section of the second separation chute section 2 is 200mm deep from the liquid inlet end of the third separation chute section 3.

[0041] According to one or some embodiments of the present invention, the lowest positions of the liquid inlet ends of the separation chute sections are at the same height.

[0042] According to the embodiment of the present invention, the angle between the bottom of the separation chute section and the horizontal plane decreases successively along the direction of liquid flow, keeping the liquid inlet 5 of each separation chute section higher than the overflow port 4 of the overflow end to maintain the flow direction 7 of the liquid.

[0043] According to one or some embodiments of the present invention, the side wall of the liquid inlet end of the separation chute section is vertically arranged to form a vertical height difference between the liquid inlet end and the bottom, so that the liquid flowing into the liquid inlet end impacts the bottom material when falling, causing the light material at the bottom to float, climb along the bottom, and flow out from the overflow port 4. By utilizing the density difference of the material in the liquid, the high-density copper powder is retained at the bottom near the liquid inlet end at a low height.

[0044] According to one or some embodiments of the present invention, an opening valve is provided on the liquid inlet pipe 6 provided above the copper powder separation chute to control the flow rate of liquid flowing into the liquid inlet end of the copper powder separation chute.

[0045] According to one or some embodiments of the present invention, the liquid flowing out of the liquid inlet pipe 6 is electrolyte or passivated anode mud slurry or clean water.

[0046] According to one or some embodiments of the present invention, the copper content of the passivated anode mud of the copper powder to be separated flowing out of the liquid inlet pipe 6 is 20-50%.

[0047] According to one or some embodiments of the present invention, the inner diameter of the liquid inlet pipe 6 is 50 mm.

[0048] The copper powder separation chute provided by the utility model adopts a deep front and shallow back mode, with each section having a greater depth at the liquid inlet end, which can form anode mud sedimentation, and the overflow port 4 connected to the previous section can use the overflow port 4 to impact the light anode mud deposited at the bottom deep at the liquid inlet end and continuously stir up the anode mud slurry to overflow to the next section.

[0049] The copper powder separation chute is a trough with an open top facing upward and one semi-enclosed end. It measures 3 meters long, 0.2 meters wide, and 0.4 meters deep. It can be divided into three sections: the first, second, and third copper powder separation chute sections. The enclosed section of the copper powder separation chute is the front section. The head of the first copper powder separation chute section serves as the liquid inlet, equipped with an inlet pipe 6 with an adjustable valve for the flow of anode slurry, electrolyte, or water. The front section is 1 meter long, with a bottom depth of 0.4 meters and a slope of 16.7° from the bottom to the overflow outlet 4 in the front section. The overflow outlet 4 in the front section serves as the liquid inlet of the second copper powder separation chute section. The bottom of this inlet is 0.3 meters deep from the liquid inlet, and the slope from the bottom to the overflow outlet 4 in the middle section is 11.3°. The overflow port 4 in the middle section of the separation chute serves as the liquid inlet for the third copper powder separation chute section. The bottom of the liquid inlet is 0.2 meters deep, and the slope from the bottom to the overflow port 4 in the third copper powder separation chute section is 5.7°. The overflow port 4 in the third copper powder separation chute section is 0.3 meters from the upper edge of the entire copper powder separation chute.

[0050] During operation, the copper powder separation chute flows anode mud slurry through the liquid inlet pipe 6 and into the front section of the copper powder separation chute. When the front section is full, it begins to overflow into the middle section. When the middle section is full, it overflows into the rear section. When the rear section is full, it overflows out of the copper powder separation chute. During this process, the denser copper powder settles first in the front section, while the lighter anode mud overflows into the liquid inlet of the middle section. The remaining copper powder further settles in the middle section, and then continues to flow into the liquid inlet of the rear section. The remaining copper powder continues to settle, and finally flows out of the copper powder separation chute through the overflow port 4 of the rear section.

[0051] After the work is completed, the liquid inlet pipe 6 is closed to flow into the anode mud, and the liquid inlet pipe 6 can be switched to flow in electrolyte or clean water. The electrolyte or clean water flowing in and overflowing will form impact stirring at the front, middle and end liquid inlet ends of the copper powder separation chute to stir the light anode mud settled at the bottom with the copper powder and separate it with the overflow electrolyte or clean water, further improving the copper content of the copper powder separated by sedimentation.

[0052] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A copper powder separation chute for separating copper powder from anode mud produced by passivation of anode plates, characterized in that: The copper powder separation chute is open at the top and has two ends, one end of which is a liquid inlet end, and liquid is injected into the liquid inlet end of the copper powder separation chute through a liquid inlet pipe arranged above the copper powder separation chute. The copper powder separation chute is a special-shaped trough body, including one or more separation chute sections, each of which includes: a bottom, a liquid inlet side wall, and two vertically upward side walls on opposite sides parallel to the liquid flow direction. The other end where the liquid flows out is an overflow end, which has an overflow port for liquid overflow. The bottom is angled with the horizontal plane, that is, the bottom is inclined upward in the direction of liquid flow, and one end of the bottom close to the liquid inlet end is lower than the other end of the bottom close to the overflow port. When the liquid flowing out of the liquid inlet pipe is anode mud slurry produced by passivating the anode plate, the liquid continuously flows from the liquid inlet end to the overflow end, and the liquid climbs upward along the bottom slope. Due to the high density of copper powder, the copper powder in the anode mud slurry is settled. At the same time, due to the increase of mud at the liquid inlet end, the liquid inlet end is impacted, and the light anode mud deposited at the bottom deep in the liquid inlet end is continuously stirred up and flows out of the overflow port along with the anode mud liquid, thereby realizing the physical separation of copper powder and anode mud.

2. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to claim 1, characterized in that: Multiple separation chute sections are connected in sequence along the direction of liquid flow, that is, the liquid inlet of the latter section is the overflow port of the previous section, and the overflow end of the last section is the outlet of the copper powder separation chute.

3. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to claim 2, characterized in that: The plurality of separation chute sections are divided into three sections, namely, a first separation chute section, a second separation chute section, and a third separation chute section.

4. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to claim 1, characterized in that: The angle between the bottom of the separation chute section and the horizontal plane is in the range of 5° to 18°.

5. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to claim 3, characterized in that: The bottom of the first separation chute section forms an angle of 16.7° with the horizontal plane; the bottom of the second separation chute section forms an angle of 11.3° with the horizontal plane; and the bottom of the first separation chute section forms an angle of 5.7° with the horizontal plane.

6. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to claim 2, characterized in that: The lowest position of the liquid inlet end of each separation chute section is at the same height.

7. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to claim 6, characterized in that: The angle between the bottom of the separation chute section and the horizontal plane decreases successively along the direction of liquid flow, keeping the liquid inlet of each separation chute section higher than the overflow port of the overflow end to maintain the flow direction of the liquid.

8. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to claim 1, characterized in that: The side wall of the liquid inlet end of the separation chute section is arranged vertically to form a vertical height difference between the liquid inlet end and the bottom, so that the liquid flowing into the liquid inlet end will impact the bottom material when it falls, causing the light material at the bottom to float, climb along the bottom, and flow out from the overflow port. By utilizing the density difference of the material in the liquid, the high-density copper powder is retained at the bottom near the liquid inlet end at a low height.

9. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to claim 1, characterized in that: An opening valve is provided on the liquid inlet pipe arranged above the copper powder separation chute to control the flow rate of liquid flowing into the liquid inlet end of the copper powder separation chute.

10. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates according to claim 1, characterized in that: The liquid flowing out of the liquid inlet pipe is electrolyte or passivated anode mud slurry or clean water.

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