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

Abstract

The invention relates to a copper powder separation chute 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 invention, 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 invention relates to the technical field of copper electrolytic refining, and in particular to a copper powder separation chute for separating copper powder from anode mud produced 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, and gradually disintegrate and fall to the bottom of the electrolytic cell as the copper anode dissolves, forming anode mud.

[0003] The composition of the copper anode plate affects the copper electrolytic refining process. The copper anode used in copper electrolytic refining has a complex composition. A large amount of recycled copper and low-impurity copper are smelted to produce copper anodes with high copper content (copper content ≥ 99.5%), low arsenic (arsenic content ≤ 0.01%) and low impurities. Anode passivation is very likely to occur during the electrolytic process, and the copper anode dissolves slowly or does not dissolve. At the same time, a large amount of copper powder is formed on the surface of the copper anode plate and enters the copper anode mud.

[0004] Under normal circumstances, the copper content of copper anode mud in copper electrolytic refining is 10-20%, while the copper content of anode mud produced by passivated copper anode is as high as 30-50%. The copper in this anode mud exists in the form of pure copper powder, and the copper powder particle size is dispersed from 400 to 800 mesh. This kind of copper anode mud with extremely high copper content has a certain impact on the direct recovery rate of copper electrolytic refining. At the same time, the high copper anode mud with high copper content will cause great economic losses to copper electrolytic refining enterprises during the sales process due to the copper pricing coefficient.

[0005] It is of great significance to separate copper powder from anode mud. However, the current treatment method for high-copper anode mud in the industry is acid dissolution, not physical separation of copper powder. Therefore, it is urgent to develop a physical separation solution that can separate copper powder from anode mud, save costs and have high separation efficiency. Summary of the invention

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

[0007] In order to solve the above technical problems, the present invention 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 side vertically upward side walls parallel to the liquid flow direction, and the other end where the liquid flows out is an overflow end, which has an overflow port for liquid overflow The bottom forms an angle with the horizontal plane, that is, the bottom forms an upward slope 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 at the liquid inlet end is continuously agitated 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 range from 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; 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 an 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 at the liquid inlet end of each separation chute section higher than the overflow end to maintain the flow direction of the liquid.

[0014] According to an embodiment of the present invention, the side wall of the liquid inlet end of the separation chute section can be 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 forms an impact on 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. 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 disposed 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 deep from the liquid inlet end of the second separation chute section; the liquid inlet end of the third separation chute section is 400mm deep, the overflow end depth of 300mm, the overall length of 1000mm, and the overall width of 200mm, and the overflow section of the second separation chute section is 200mm deep from 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 at least achieve the following beneficial effects:

[0021] The copper powder separation chute provided by the present invention is provided with one or more sections, and an upward slope is set at the bottom. The copper powder and the light anode mud in the passivated anode mud have different settling speeds in the anode mud by using the density difference between them. When the passivated anode mud climbs up the slope and overflows backward, the copper powder is settled and the light anode mud overflows to the next slope. The separation of copper powder from the anode mud produced by the passivated anode plate can be achieved, which has a certain effect on reducing the copper content of the anode mud.

[0022] The copper powder separation chute provided by the patent of the present invention is provided with three copper powder separation sections, and the front, middle and end sections are provided with different slope shapes. The slope in each copper powder separation section is different, and the copper powder is further separated and precipitated 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, so that the copper powder in the anode mud can be precipitated in stages.

[0023] The copper powder separation chute provided by the patent of the present invention 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 of the deep 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, but are not intended to limit the present invention.

[0025] Figure 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] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment 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, the technical or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but indicate the existence of at least one.

[0030] Figure 1is 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, 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, with an overflow port 4 for liquid overflow.

[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 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 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 agitated and flows out of the overflow port 4 along with the anode mud slurry, thereby realizing the physical separation of copper powder and anode mud.

[0034] The copper powder separation chute provided by the present invention is provided with one or more sections, and an upward slope is set at the bottom. The copper powder and the light anode mud in the passivated anode mud have different settling speeds in the anode mud by using the density difference between them. When the passivated anode mud climbs up the slope and overflows backward, the copper powder is settled and the light anode mud overflows to the next slope. The separation of copper powder from the anode mud produced by the passivated anode plate can be achieved, which has a certain effect on reducing 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 former 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 bottom of the separation chute section makes an angle with the horizontal plane 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; 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 patent of the present invention is provided with three copper powder separation sections, and the front, middle and end sections are provided with different slope shapes. The slope in each copper powder separation section is different, and the copper powder is further separated and precipitated 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, so that the copper powder in the anode mud can be precipitated in stages.

[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, the overflow end depth of 300mm, the overall length of 1000mm, and the 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 each separation chute section are at the same height.

[0042] According to an 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 at the liquid inlet end of each separation chute section higher than the overflow port 4 at 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 forms an impact on 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 disposed 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 patent of the present invention 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 of the deep 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 body with an upward opening at the top and a semi-closed end. The trough body is 3 meters long, 0.2 meters wide and 0.4 meters deep. The copper powder separation chute can be set as three copper powder separation chute sections, namely the first copper powder separation chute section, the second copper powder separation chute section and the third copper powder separation chute section. The closed section of the copper powder separation chute is the front section, and the head of the first copper powder separation chute section is the liquid inlet end, which is provided with a liquid inlet pipe 6 with an adjustable valve opening for flowing into anode mud, electrolyte or water. The front section of the separation chute is 1 meter long as a whole, the bottom of the liquid inlet end is 0.4 meters deep, and the slope from the bottom to the overflow port 4 of the front section of the separation chute is 16.7°. The overflow port 4 of the front section of the separation chute is the liquid inlet end of the second copper powder separation chute section of the separation chute. The bottom of the liquid inlet end is 0.3 meters deep from the liquid inlet end, and the slope from the bottom to the overflow port 4 of the middle section of the separation chute is 11.3°. The overflow port 4 in the middle section of the separation chute is the liquid inlet end of the third copper powder separation chute section of the separation chute. The bottom of the liquid inlet end is 0.2 meters deep from the bottom of the liquid inlet end, and the slope from the bottom to the overflow port 4 of the third copper powder separation chute section of the separation chute is 5.7°. The overflow port 4 of the third copper powder separation chute section is 0.3 meters away from the overall upper edge of the copper powder separation chute.

[0050] When the copper powder separation chute is working, the anode mud slurry flows into the front section of the copper powder separation chute through the liquid inlet pipe 6. When the front section is full, it begins to overflow to the middle section, and when the middle section is full, it overflows to the end section. When the end section is full, it overflows out of the copper powder separation chute. During this period, the copper powder with a higher density will settle first in the front section, and the light anode mud will flow into the liquid inlet end of the middle section along with the overflow. The remaining copper powder will further settle in the middle section, and the light anode mud will continue to stay in the liquid inlet end of the end section. The remaining copper powder will continue to settle, and the light anode mud will eventually flow out of the copper powder separation chute through the overflow port 4 of the end 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 flowing and overflowing electrolyte or clean water 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 overflowing electrolyte or clean water, thereby 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 protection scope of the present invention. The protection scope 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 passivating anode plates, wherein: 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, wherein 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, and the other end where the liquid flows out is an overflow end, which has an overflow port for the liquid to overflow and flow out. 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 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 at the liquid inlet end is continuously agitated to flow out of the overflow port along with the anode mud slurry, 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, wherein: 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 outlet of the former 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 as claimed in claim 2, wherein: 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, wherein: The angle between the bottom of the separation chute section and the horizontal plane ranges from 5° to 18°.

5. The copper powder separation chute for separating copper powder from anode mud produced by passivating anode plates as claimed in claim 3, wherein: 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; 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 as claimed in claim 2, wherein: 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, wherein: 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 at the liquid inlet end of each separation chute section higher than the overflow at 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, wherein: 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 up, 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, wherein: An opening valve is arranged on the liquid inlet pipe arranged above the copper powder separation chute, which is used 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, wherein: The liquid flowing out of the liquid inlet pipe is electrolyte or passivated anode mud slurry or clean water.

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