Copper-containing oxide treatment system

Abstract

The utility model belongs to the technical field of copper-containing waste liquid treatment, and discloses a copper-containing oxide treatment system which comprises a slurrying device, a stirring and slurrying device, a stirring and slurrying device, a stirring and slurrying device and a stirring and slurrying device, and is characterized in that the slurrying device comprises a slurrying tank inside which is used for accommodating copper-containing oxides and stirring and slurrying the copper-containing oxides to form slurry; the conversion device comprises a first reaction tank, a second reaction tank and a sulfuric acid storage tank, slurry discharged by the pulping tank can be conveyed into the first reaction tank and the second reaction tank respectively, sulfuric acid in the sulfuric acid storage tank can be conveyed into the first reaction tank and the second reaction tank respectively, and the slurry and the sulfuric acid can react to generate a dissolving solution; the separating device comprises a centrifugal machine, the first reaction tank and the second reaction tank are respectively connected with the centrifugal machine, the dissolving solution discharged by the first reaction tank and the second reaction tank can be conveyed to the centrifugal machine, and the centrifugal machine is configured to centrifugate the dissolving solution to obtain copper sulfate pentahydrate crystals and centrifugal filtrate. According to the utility model, the value of the copper-containing waste liquid can be further maximized.

Description

Technical Field

[0001] This utility model relates to the field of copper-containing waste liquid treatment technology, and in particular to a copper oxide treatment system. Background Technology

[0002] In industries such as metal processing, electronic electroplating, and PCB manufacturing, a large amount of copper-containing waste liquid is often generated due to process requirements. This type of waste liquid not only has a high concentration of copper ions and is difficult to treat, but improper disposal can also cause serious harm to the ecological environment and human health.

[0003] Currently, neutralization precipitation is commonly used in industry as a basic treatment method, which involves obtaining copper-containing byproducts through related transformations, such as converting copper ions into copper oxides and copper hydroxides. Although this treatment method achieves preliminary recovery of copper resources, the copper oxide products obtained have low added value and limited market application scope, failing to fully reflect the potential value of copper resources.

[0004] Therefore, there is an urgent need to develop a copper oxide processing system to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a copper oxide treatment system that can further maximize the value of copper-containing waste liquid.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a copper oxide processing system, comprising:

[0008] A pulping apparatus, including a pulping tank, the interior of which is used to contain copper oxides and to stir and pulp the copper oxides to form a slurry;

[0009] The conversion device includes a first reaction tank, a second reaction tank, and a sulfuric acid storage tank. The first reaction tank and the second reaction tank are respectively connected to the pulping tank, and the first reaction tank and the second reaction tank are respectively connected to the sulfuric acid storage tank. The slurry discharged from the pulping tank can be transferred to the first reaction tank and the second reaction tank respectively, and the sulfuric acid in the sulfuric acid storage tank can be transferred to the first reaction tank and the second reaction tank respectively. The slurry and the sulfuric acid can react to generate a solution.

[0010] A separation device includes a centrifuge, a first reaction vessel and a second reaction vessel are respectively connected to the centrifuge, the solution discharged from the first reaction vessel and the second reaction vessel can be transferred to the centrifuge, and the centrifuge is configured to centrifuge the solution to obtain copper sulfate pentahydrate crystals and centrifugal filtrate.

[0011] In some embodiments, the conversion apparatus further includes a first cooling component and a second cooling component, wherein the first cooling component is connected to the first reaction vessel and is used to cool the first reaction vessel, and the second cooling component is connected to the second reaction vessel and is used to cool the second reaction vessel.

[0012] In some embodiments, the first cooling assembly includes a first jacket, a first heat pump unit, a first suction line and a first return line. The first jacket is disposed outside the first reaction vessel and the interior of the first jacket is used to contain the cooling medium. The first suction line and the first return line are respectively connected between the first jacket and the first heat pump unit.

[0013] The second cooling assembly includes a second jacket, a second heat pump unit, a second suction pipe and a second return pipe. The second jacket is disposed outside the second reaction vessel and the interior of the second jacket is used to contain the cooling medium. The second suction pipe and the second return pipe are respectively connected between the second jacket and the second heat pump unit.

[0014] In some embodiments, the first return line is provided with a first regulating valve and a first flow meter, and the second return line is provided with a second regulating valve and a second flow meter.

[0015] In some embodiments, both the first reaction vessel and the second reaction vessel are equipped with a stirring paddle.

[0016] In some embodiments, the discharge port of the first reaction tank is connected to a first aeration device, and the discharge port of the second reaction tank is connected to a second aeration device.

[0017] In some embodiments, the separation device further includes a return water storage tank connected to the centrifuge and used to receive and temporarily store the centrifugal filtrate discharged from the centrifuge.

[0018] In some embodiments, the return water storage tank is connected between the centrifuge and the pulping tank, and a return water lift pump is provided between the return water storage tank and the pulping tank. The return water lift pump is used to transfer the centrifuged filtrate in the return water storage tank to the pulping tank.

[0019] In some embodiments, the pulping apparatus further includes a feeding mechanism connected to the pulping tank, the feeding mechanism being used to convey the copper oxide into the pulping tank.

[0020] In some embodiments, the discharge port of the pulping tank is connected to a third aeration device.

[0021] The beneficial effects of this utility model are:

[0022] The copper oxide treatment system provided by this invention can convert copper oxides into copper sulfate pentahydrate crystals with higher added value, further maximizing the value of copper-containing waste liquid. Furthermore, by operating two sets of conversion equipment alternately, the continuous conversion of copper oxides into copper sulfate can be achieved, resulting in high treatment efficiency. In addition, the introduction of high-concentration sulfuric acid into this copper oxide treatment system can induce the system to exothermically reach a higher temperature, ensuring that the copper oxides completely dissolve and reach saturation at high temperatures. Subsequent cooling yields copper sulfate pentahydrate crystals. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the copper oxide processing system provided in an embodiment of the present invention.

[0025] In the picture:

[0026] 100. Pulping unit; 200. Conversion unit; 300. Separation unit;

[0027] 1. Pulping tank; 11. Third aeration device; 2. First reaction tank; 21. First aeration device; 3. Second reaction tank; 31. Second aeration device; 4. Sulfuric acid storage tank; 5. Centrifuge; 6. First cooling assembly; 61. First jacket; 62. First heat pump unit; 63. First suction pipeline; 64. First return pipeline; 7. Second cooling assembly; 71. Second jacket; 72. Second heat pump unit; 73. Second suction pipeline; 74. Second return pipeline; 8. Return water storage tank; 9. Feeding mechanism;

[0028] 10. First regulating valve; 20. First flow meter; 30. Second regulating valve; 40. Second flow meter; 50. Agitator; 60. Return water lift pump; 70. Slurry pump; 80. Sulfuric acid discharge pump. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] like Figure 1 As shown, this embodiment provides a copper oxide processing system, including a pulping device 100, a conversion device 200, and a separation device 300.

[0037] The pulping device 100 includes a pulping tank 1, which contains copper oxide and is stirred and pulped to form a slurry. The conversion device 200 includes a first reaction tank 2, a second reaction tank 3, and a sulfuric acid storage tank 4. The first reaction tank 2 and the second reaction tank 3 are respectively connected to the pulping tank 1, and the first reaction tank 2 and the second reaction tank 3 are respectively connected to the sulfuric acid storage tank 4. The slurry discharged from the pulping tank 1 can be transferred to the first reaction tank 2 and the second reaction tank 3, respectively. The sulfuric acid in the sulfuric acid storage tank 4 can be transferred to the first reaction tank 2 and the second reaction tank 3, respectively. The slurry and sulfuric acid can react to form a solution. The separation device 300 includes a centrifuge 5. The first reaction tank 2 and the second reaction tank 3 are respectively connected to the centrifuge 5. The solution discharged from the first reaction tank 2 and the second reaction tank 3 can be transferred to the centrifuge 5. The centrifuge 5 is configured to centrifuge the solution to obtain copper sulfate pentahydrate crystals and centrifugal filtrate.

[0038] Among them, the copper oxide can be a solid substance obtained by converting copper-containing waste liquid, such as copper oxide, copper hydroxide or basic copper carbonate, with a water content of 20% to 30%.

[0039] In the specific implementation, the first step is to first add tap water to the pulping tank 1 at a solid-liquid ratio of approximately 1:2 and start stirring. Then, add the pre-weighed copper oxides to the water and stir for about one hour to slurry the copper oxides. The second step is to transfer the slurry discharged from the pulping tank 1 to the first reaction tank 2, adding no more than 2 / 3 of its volume. Sulfuric acid, with a mass concentration of 50%–70%, is then added uniformly to the first reaction tank 2 from the sulfuric acid storage tank 4. The sulfuric acid reacts with the slurry to dissolve the copper oxides until a clear blue solution is formed. Since the temperature during the acid dissolution process can reach above 60°C, the first reaction tank 2 is cooled after the acid dissolution reaction to facilitate the subsequent crystallization of copper sulfate pentahydrate. The third step is to transfer the slurry and sulfuric acid sequentially to the second reaction tank 3 for another acid dissolution reaction (similar to the second step) until the copper oxides in the slurry are completely dissolved. Then, the second reaction tank 3 is cooled. Fourth, after the solution in the first reaction tank 2 has cooled down, it is discharged into the centrifuge 5 of the separation device 300. Centrifugation in the centrifuge 5 yields deep blue copper sulfate pentahydrate crystals and centrifugal filtrate. After the solution in the first reaction tank 2 is discharged, the aforementioned second step can be repeated, adding slurry and sulfuric acid back into the empty first reaction tank 2 for dissolution and cooling, thus initiating the next cycle of processing. Fifth, during the cooling of the first reaction tank 2 in the next cycle, the solution in the second reaction tank 3 from the previous cycle has also cooled down. The solution in the second reaction tank 3 is discharged into the centrifuge 5 for centrifugation to obtain copper sulfate pentahydrate crystals and centrifugal filtrate. At this time, slurry and sulfuric acid can be added back into the empty second reaction tank 3 for dissolution and cooling. In other words, copper oxide slurry can be dissolved, cooled, and centrifuged alternately and independently, thereby achieving continuous conversion of copper oxides in two sets of conversion equipment to obtain copper sulfate pentahydrate crystals.

[0040] The copper oxide treatment system provided in this embodiment can convert copper oxides into copper sulfate pentahydrate crystals with higher added value, further maximizing the value of copper-containing waste liquid. Furthermore, by operating two sets of conversion equipment alternately, the continuous conversion of copper oxides into copper sulfate can be achieved, resulting in high treatment efficiency. In addition, the introduction of high-concentration sulfuric acid into this copper oxide treatment system can induce the system to exothermically reach a higher temperature, ensuring that the copper oxides completely dissolve and reach saturation at high temperatures. Cooling then yields copper sulfate pentahydrate crystals.

[0041] Optionally, centrifuge 5 may include, but is not limited to, a fully automatic flat plate centrifuge. The entire material of the fully automatic flat plate centrifuge may be SS316 stainless steel, and it can achieve automatic feeding and discharging.

[0042] Optionally, the sulfuric acid in the sulfuric acid storage tank 4 is transferred to the first reaction tank 2 and the second reaction tank 3 via the sulfuric acid discharge pump 80. Specifically, the sulfuric acid storage tank 4 is a PE material storage tank with a thickness of 40mm, and the sulfuric acid discharge pump 80 is a PP material pneumatic diaphragm pump.

[0043] Optionally, the main body of the pulping tank 1 is a steel-lined plastic pulping tank, and a pulping agitator is installed inside it. The pulping agitator is a steel-lined plastic anchor blade.

[0044] like Figure 1 As shown, in some embodiments, the discharge port of the pulping tank 1 is connected to a third aeration device 11. Specifically, the discharge port of the pulping tank 1 is equipped with an electric valve, through which the slurry in the pulping tank 1 is transferred to the conversion device 200, and then transferred to the first reaction tank 2 and the second reaction tank 3 respectively using independent manual valves. The third aeration device 11 is located in the pipeline between the discharge port of the pulping tank 1 and the electric valve.

[0045] When copper oxides are added to the water in pulping tank 1 and stirred until mixed, the third aeration device 11 is activated to introduce air into the pulping tank 1, thereby preventing the deposition of copper oxides inside the pulping tank 1 through airflow disturbance. It should be noted that the third aeration device 11 is in the on state as long as the pulping tank 1 is not discharging material.

[0046] Preferably, the discharge port of the pulping tank 1 is located at the bottom of the tank, and the third aeration device 11 is also connected to the bottom of the tank. This is beneficial to improve the anti-deposition effect of copper oxide when the third aeration device 11 is started.

[0047] Optionally, the slurry in the pulping tank 1 is pumped to the conversion unit 200 by the slurry pump 70. Specifically, the slurry pump 70 is a pneumatic diaphragm pump made of PP material.

[0048] like Figure 1 As shown, in some embodiments, the pulping apparatus 100 further includes a feeding mechanism 9 connected to the pulping tank 1, which is used to convey copper oxide to the inside of the pulping tank 1.

[0049] By setting up the feeding mechanism 9, copper oxides can be automatically and continuously transported into the pulping tank 1, which helps to improve the overall automation level of the copper oxide processing system and the continuity between multiple processes.

[0050] Optionally, the feeding mechanism 9 may include, but is not limited to, a screw conveyor. The main body of the screw conveyor is made of SS304 stainless steel, and it has a single screw conveying shaft inside.

[0051] like Figure 1As shown, in some embodiments, the conversion device 200 further includes a first cooling component 6 and a second cooling component 7. The first cooling component 6 is connected to the first reaction vessel 2 and is used to cool the first reaction vessel 2. The second cooling component 7 is connected to the second reaction vessel 3 and is used to cool the second reaction vessel 3. With this configuration, after the dissolution inside the first reaction vessel 2 is complete, the first cooling component 6 is activated to cool the first reaction vessel 2; after the dissolution inside the second reaction vessel 3 is complete, the second cooling component 7 is activated to cool the second reaction vessel 3. Compared to natural cooling, the first cooling component 6 and the second cooling component 7 help to achieve rapid cooling of the first reaction vessel 2 and the second reaction vessel 3.

[0052] like Figure 1 As shown, in some embodiments, the first cooling assembly 6 includes a first jacket 61, a first heat pump unit 62, a first suction pipe 63, and a first return pipe 64. The first jacket 61 is disposed outside the first reaction tank 2 and the interior of the first jacket 61 is used to contain the cooling medium. The first suction pipe 63 and the first return pipe 64 are respectively connected between the first jacket 61 and the first heat pump unit 62.

[0053] The second cooling assembly 7 includes a second jacket 71, a second heat pump unit 72, a second suction pipe 73, and a second return pipe 74. The second jacket 71 is located outside the second reaction vessel 3 and its interior is used to contain the cooling medium. The second suction pipe 73 and the second return pipe 74 are respectively connected between the second jacket 71 and the second heat pump unit 72.

[0054] The following description uses the first cooling component 6 as an example. The cooling process of the second cooling component 7 is the same as that of the first cooling component 6, and will not be repeated in this application. The working process of the first cooling component 6 is as follows:

[0055] After the reaction inside the first reaction tank 2 is completed, the first heat pump unit 62 is started. The cooling medium enters the first jacket 61 through the first suction pipe 63 and exchanges heat. Then it flows back to the first heat pump unit 62 through the first return pipe 64. In this way, the cooling medium circulates to remove the heat from the first reaction tank 2 until the temperature of the first reaction tank 2 drops to the expected temperature.

[0056] With this setup, the components of the first cooling component 6 and the second cooling component 7 are relatively conventional, with low investment costs. Furthermore, by using a heat pump system to replace traditional energy sources, cooling energy consumption can be significantly reduced.

[0057] Optionally, the cooling medium includes, but is not limited to, water. The first heat pump unit 62 and the second heat pump unit 72 are water source heat pumps.

[0058] Furthermore, such as Figure 1As shown, in some embodiments, the first return line 64 is equipped with a first regulating valve 10 and a first flow meter 20, and the second return line 74 is equipped with a second regulating valve 30 and a second flow meter 40. Specifically, the first regulating valve 10 and the second regulating valve 30 can be SS304 stainless steel manual regulating valves, and the first flow meter 20 and the second flow meter 40 can be rotor flow meters with a flow range of 100L / h to 1000L / h.

[0059] In practice, the first regulating valve 10 is first adjusted, and the cooling medium circulation flow rate is maintained at 200L / h to 300L / h by the digital display of the first flow meter 20 until the temperature of the solution in the first reaction tank 2 gradually drops from above 60°C to about 40°C. Then the cooling medium circulation flow rate is increased to maintain at 600L / h to 800L / h until the temperature of the solution drops rapidly to below 25°C.

[0060] This setup allows for gradient cooling (slow at first, then fast) by adjusting the flow rate of the cooling medium during the cooling process. This enables the control of the copper sulfate crystal particle size and color, resulting in higher quality copper sulfate products.

[0061] like Figure 1 As shown, in some embodiments, both the first reaction vessel 2 and the second reaction vessel 3 are equipped with a stirring paddle 50. The stirring paddle 50 can stir the materials inside the first reaction vessel 2 and the second reaction vessel 3, making the reaction more complete.

[0062] Optionally, both the first reaction vessel 2 and the second reaction vessel 3 are enamel-lined reaction vessels, and the stirring paddle 50 inside them includes enamel-lined anchor blades.

[0063] like Figure 1 As shown, in some embodiments, the discharge port of the first reaction tank 2 is connected to a first aeration device 21, and the discharge port of the second reaction tank 3 is connected to a second aeration device 31.

[0064] Specifically, both the discharge ports of the first reaction tank 2 and the second reaction tank 3 are equipped with electric valves. The dissolved liquid discharged from the first reaction tank 2 and the second reaction tank 3 is transferred to the separation device 300 through the corresponding electric valves. The first aeration device 21 is installed in the pipeline between the discharge port of the first reaction tank 2 and the electric valve, and the second aeration device 31 is installed in the pipeline between the discharge port of the second reaction tank 3 and the electric valve.

[0065] The first aeration device 21 and the second aeration device 31 can respectively introduce gas into the first reaction tank 2 and the second reaction tank 3, so as to avoid the deposition of copper oxide inside the first reaction tank 2 and the second reaction tank 3 by airflow disturbance.

[0066] like Figure 1As shown, in some embodiments, the separation device 300 further includes a return water storage tank 8, which is connected to the centrifuge 5 and is used to receive and temporarily store the centrifugal filtrate discharged from the centrifuge 5. With this configuration, the return water storage tank 8 can temporarily store the centrifugal filtrate obtained from the reaction for subsequent centralized processing.

[0067] Optionally, the return water storage tank 8 is a PE material storage tank with a thickness of 20mm.

[0068] like Figure 1 As shown, in some embodiments, the return water storage tank 8 is connected between the centrifuge 5 and the pulping tank 1, and a return water lift pump 60 is provided between the return water storage tank 8 and the pulping tank 1. The return water lift pump 60 is used to transfer the centrifuged filtrate in the return water storage tank 8 to the inside of the pulping tank 1.

[0069] With this setup, the centrifuged filtrate is discharged into the return water storage tank 8, and then transferred to the pulping tank 1 by the return water lift pump 60. After that, copper oxide can be added according to the preset solid-liquid ratio to realize the recycling of the centrifuged filtrate.

[0070] Optionally, the return water lift pump 60 can be a fluoroplastic centrifugal pump.

[0071] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A copper oxide processing system, characterized in that, include: The pulping apparatus (100) includes a pulping tank (1), the inside of which is used to contain copper oxide and to stir and pulp the copper oxide to form a slurry; The conversion device (200) includes a first reaction tank (2), a second reaction tank (3), and a sulfuric acid storage tank (4). The first reaction tank (2) and the second reaction tank (3) are respectively connected to the pulping tank (1), and the first reaction tank (2) and the second reaction tank (3) are respectively connected to the sulfuric acid storage tank (4). The slurry discharged from the pulping tank (1) can be transferred to the first reaction tank (2) and the second reaction tank (3) respectively. The sulfuric acid in the sulfuric acid storage tank (4) can be transferred to the first reaction tank (2) and the second reaction tank (3) respectively. The slurry and the sulfuric acid can react to generate a solution. The separation device (300) includes a centrifuge (5), the first reaction vessel (2) and the second reaction vessel (3) are respectively connected to the centrifuge (5), the solution discharged from the first reaction vessel (2) and the second reaction vessel (3) can be transferred to the centrifuge (5), the centrifuge (5) is configured to centrifuge the solution to obtain copper sulfate pentahydrate crystals and centrifugal filtrate.

2. The copper oxide processing system according to claim 1, characterized in that, The conversion device (200) further includes a first cooling component (6) and a second cooling component (7). The first cooling component (6) is connected to the first reaction vessel (2) and is used to cool the first reaction vessel (2). The second cooling component (7) is connected to the second reaction vessel (3) and is used to cool the second reaction vessel (3).

3. The copper oxide processing system according to claim 2, characterized in that, The first cooling assembly (6) includes a first jacket (61), a first heat pump unit (62), a first suction pipe (63), and a first return pipe (64). The first jacket (61) is disposed outside the first reaction tank (2), and the interior of the first jacket (61) is used to contain the cooling medium. The first suction pipe (63) and the first return pipe (64) are respectively connected between the first jacket (61) and the first heat pump unit (62). The second cooling assembly (7) includes a second jacket (71), a second heat pump unit (72), a second suction pipe (73), and a second return pipe (74). The second jacket (71) is disposed outside the second reaction vessel (3), and the interior of the second jacket (71) is used to contain the cooling medium. The second suction pipe (73) and the second return pipe (74) are respectively connected between the second jacket (71) and the second heat pump unit (72).

4. The copper oxide processing system according to claim 3, characterized in that, The first return pipeline (64) is equipped with a first regulating valve (10) and a first flow meter (20), and the second return pipeline (74) is equipped with a second regulating valve (30) and a second flow meter (40).

5. The copper oxide processing system according to claim 1, characterized in that, Both the first reaction vessel (2) and the second reaction vessel (3) are equipped with stirring paddles (50).

6. The copper oxide processing system according to claim 5, characterized in that, The discharge port of the first reaction tank (2) is connected to a first aeration device (21), and the discharge port of the second reaction tank (3) is connected to a second aeration device (31).

7. The copper oxide processing system according to claim 1, characterized in that, The separation device (300) further includes a return water storage tank (8), which is connected to the centrifuge (5) and is used to receive and temporarily store the centrifugal filtrate discharged by the centrifuge (5).

8. The copper oxide processing system according to claim 7, characterized in that, The return water storage tank (8) is connected between the centrifuge (5) and the pulping tank (1). A return water lift pump (60) is provided between the return water storage tank (8) and the pulping tank (1). The return water lift pump (60) is used to transfer the centrifuged filtrate in the return water storage tank (8) to the pulping tank (1).

9. The copper oxide processing system according to claim 1, characterized in that, The pulping device (100) further includes a feeding mechanism (9), which is connected to the pulping tank (1) and is used to transport the copper oxide to the inside of the pulping tank (1).

10. The copper oxide processing system according to claim 1, characterized in that, The discharge port of the pulping tank (1) is connected to a third aeration device (11).

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