Copper electrolysis / electrodeposition device and its working method

Abstract

The application discloses a copper electrolysis / electricity deposition device and a working method thereof in the technical field of crude copper electrolytic refining, which comprises a tank body, the tank body comprises a cathode cavity and an anode cavity, the cathode cavity and the anode cavity are arranged side by side and are communicated with each other, an electrolyte input device, the electrolyte input device is arranged in the cathode cavity, and the electrolyte input direction is from the cathode to the anode, an electrolyte output device, the electrolyte output device is arranged in the anode cavity, and the electrolyte output direction is from the anode to the cathode, cathode plates and anode plates can be arranged in the cathode cavity and the anode cavity respectively at intervals, and the cathode plates and the anode plates are connected with an electrolysis power source externally, the cathode cavity and the anode cavity adopt a cathode-anode different-tank structure, the purity of electrolyte in the cathode tank is high during the electrolysis process, the quality of cathode copper can be improved, the problem of short circuit caused by excessive dissolution of the anode plates and falling off of the anode plates during the electrolysis process can be avoided, the residual anode rate can be reduced, and silver ions generated by anode dissolution do not participate in cathode discharge, so that the silver recovery rate can be improved.

Description

Technical Field

[0001] This invention relates to the field of crude copper electrolytic refining technology, specifically to a copper electrolysis / electrowinning device and its working method. Background Technology

[0002] With the development of the electrical and new energy industries, the increasing demands for copper quality have driven the continuous development of the metallurgical industry. Electrolytic refining of copper is currently the most widely used copper purification process. Copper electrolysis is a process that utilizes the electrochemical reaction occurring at the interface between electrodes (electronic conductors) and electrolytes (ionic conductors) to synthesize high-purity substances. When electricity is applied, cations in the electrolyte move to the cathode, absorb electrons, undergo reduction, and generate new substances. Anions in the electrolyte move to the anode, release electrons, undergo oxidation, and also generate new substances. Specifically, the anode and cathode are arranged in a BABAB pattern within the electrolytic cell. The anode uses copper, and the cathode uses a permanent stainless steel plate. The electrolytic cell is filled with an electrolyte solution prepared from sulfuric acid and copper sulfate aqueous solutions. Under the action of an external power source, the copper at the anode dissolves, and high-purity metallic copper is deposited on the cathode, completing the electrolytic refining process. Insoluble impurities are deposited at the bottom of the electrolytic cell.

[0003] For example, Chinese patents:

[0004] CN115198309A An electrolytic method for purifying low-silver, low-sulfur, ultra-high-purity copper.

[0005] CN218203085U A copper electrolytic refining cycle system

[0006] Currently, almost all copper electrolysis / electrodeposition technologies place the anode and cathode plates in the same electrolytic cell. The dissolution of copper at the anode and the deposition at the cathode occur within the same electrolytic cell cavity. This electrolytic environment leads to:

[0007] (1) Insoluble impurities produced by anodic dissolution are easily adsorbed on the cathode surface, thus affecting the quality of anodic copper.

[0008] (2) For example, silver metal ions are easily discharged and deposited on the cathode surface, causing the silver content of the cathode copper to increase, while the silver recovery rate of the electrolyte solution decreases.

[0009] (3) When dissolving the anode copper, it is necessary to consider that the anode plate will not break off and fall into the electrolytic cell, causing a short circuit. The anode plate has a high residual electrode rate.

[0010] Based on this, the present invention designs a copper electrolysis / electrowinning device and its working method to solve the above problems. Summary of the Invention

[0011] The purpose of this invention is to provide a copper electrolysis / electrowinning device and its operating method to solve the above-mentioned technical problems.

[0012] To achieve the above objectives, the invention provides the following technical solution: a copper electrolysis / electrowinning device, comprising:

[0013] The tank includes a cathode cavity and an anode cavity, which are arranged side by side and interconnected. During operation, the electrolyte solution passes through the cathode cavity and the anode cavity in sequence.

[0014] Electrolyte input device; the electrolyte input device is disposed in the cathode cavity and is used to input the electrolyte solution into the cathode cavity;

[0015] Electrolyte output device; the electrolyte output device is located in the anode cavity and is used to output the electrolyte solution from the anode cavity;

[0016] The cathode cavity and the anode cavity can be respectively arranged with cathode plates and anode plates at intervals, and the cathode plates and anode plates are connected to an external electrolysis power source.

[0017] Preferred options also include:

[0018] A purification system; the electrolyte output device is connected to the input end of the purification system, and the output end of the purification system is connected to the electrolyte input device; thus forming an electrolyte circulation path.

[0019] Preferably, the tank is filled with an electrolyte solution prepared from sulfuric acid and copper sulfate aqueous solution.

[0020] Preferably, the electrolyte input device includes a liquid inlet distributor attached to the inner wall of the outer side of the cathode cavity, one end of which extends out of the tank body via a liquid inlet pipe.

[0021] Preferably, the liquid distributor has multiple liquid distribution ports evenly distributed on the side facing the cathode plate.

[0022] Preferably, the electrolyte output device includes an overflow trough disposed on the upper end of the inner wall of the outer side of the anode cavity, and at least one end of the overflow trough is connected to the outlet to discharge the electrolyte.

[0023] Preferably, the inner wall of the outer side of the anode cavity is provided with baffles at intervals. The upper end of the baffles is higher than the overflow trough and the lower end is close to the bottom of the anode cavity. An electrolyte flow gap is left between the baffles and the inner wall of the outer side of the anode cavity.

[0024] Preferably, a partition is provided between the cathode cavity and the anode cavity, and the partition has a plurality of communication openings evenly distributed on it.

[0025] Preferably, both the liquid distribution port and the connecting port are spaced vertical slits, and the opening positions of the connecting port and the liquid distribution port correspond one-to-one and are located between two adjacent cathode plates; the opening distance between the connecting port and the liquid distribution port is consistent with the cathode plate arrangement distance.

[0026] A method for operating a copper electrolysis / electrowinning device includes the following steps:

[0027] S1. Arrange several cathode plates and anode plates in parallel independent cathode cavities and anode cavities, and connect the cathode plates and anode plates to the negative and positive terminals of the electrolysis power supply, respectively.

[0028] S2. Inject clean electrolyte into the cathode cavity through the electrolyte input device and turn on the electrolysis power supply;

[0029] S3. The clean electrolyte discharges and deposits elemental copper on the cathode surface of the cathode cavity, and then enters the anode cavity through a connecting port on the partition.

[0030] S4. The electrolyte that has lost copper ions is mixed with copper ions dissolved in the anode plate, as well as soluble and insoluble impurities in the anode cavity.

[0031] S5. The electrolyte carrying copper ions and impurities enters the purification system through the electrolyte output device to remove impurities and retain copper ions. After impurity removal, the electrolyte retaining copper ions is returned to the cathode cavity by the electrolyte input device for recycling.

[0032] Compared with existing technologies, the beneficial effects of the invention are as follows:

[0033] The copper electrolysis / electrowinning device of this invention adopts a separate tank structure for the cathode and anode. During the electrolysis process, insoluble impurities generated at the anode are discharged from the tank along with the flowing electrolyte solution, thereby effectively inhibiting their adhesion and adsorption on the cathode surface and affecting the quality of the anode copper.

[0034] The copper electrolysis / electrowinning device of the present invention adopts a cathode and anode separate tank structure. During the electrolysis process, silver metal ions generated at the anode are discharged from the tank with the flowing electrolyte solution, thereby effectively suppressing their discharge and deposition on the cathode surface and preventing an increase in the silver content of the cathode copper.

[0035] The copper electrolysis / electrowinning device of this invention adopts a cathode and anode separate tank structure. After the anode melts and falls into the anode cavity, it will not directly contact the cathode plate in the cathode cavity. During the electrolysis process, there is no need to worry about the anode plate being over-dissolved and falling off, causing a short circuit, thereby reducing the residual electrode rate.

[0036] The copper electrolysis / electrowinning device of the present invention also includes a purification system, during which silver ion precipitation and recovery can be carried out simultaneously. Combined with the above-mentioned inhibition of the increase in silver content of cathode copper, the silver recovery rate of electrolyte solution can be improved. In addition, the purification system and the electrolytic cell form a circulation system to realize continuous circulation operation of the device and ensure the working efficiency of the device. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of the invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a top view of the overall structure of the present invention;

[0039] Figure 2 for Figure 1 A schematic diagram of the AA-direction cross-section structure;

[0040] Figure 3 This is a schematic diagram of the liquid distribution port structure of the liquid inlet distributor of the present invention;

[0041] Figure 4 This is a schematic diagram of the liquid distribution water flow trajectory of the present invention;

[0042] Figure 5 This is a schematic diagram of the discharge water flow trajectory of the present invention;

[0043] Figure 6 This is a schematic diagram of the cyclic working structure of the device of the present invention;

[0044] Figure 7 This is a schematic diagram of the side insulation structure of the cathode plate of the device of the present invention (in working state);

[0045] Figure 8 This is a schematic diagram of the side insulation structure of the cathode plate of the device of the present invention (in idle state).

[0046] The attached diagram lists the components represented by each number as follows:

[0047] 1-Anode plate, 101-Anode cavity, 2-Cathode plate, 201-Cathode cavity, 3-Liquid overflow tank, 4-Liquid inlet distributor, 5-Connecting port, 6-Tank body, 7-Baffle, 8-Liquid inlet pipe, 9-Liquid outlet, 10-Anode tank drain outlet, 11-Cathode tank drain outlet, 12-Liquid distribution port, 13-Clean liquid system. Detailed Implementation

[0048] The technical solutions of the embodiments of the invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the invention.

[0049] Example 1

[0050] Please see Figure 1-2 The invention provides a technical solution: a copper electrolysis / electrowinning device, including a tank 6, the tank 6 including a cathode cavity 201 and an anode cavity 101, a partition is provided between the cathode cavity 201 and the anode cavity 101, and a plurality of communication ports 5 are evenly opened on the partition for electrolyte flow. During operation, the electrolyte solution passes through the cathode cavity and the anode cavity in sequence; the bottom of the cathode cavity 201 and the anode cavity 101 are respectively provided with an anode tank drain port 10 and a cathode tank drain port 11 for periodically discharging the sludge generated by electrolysis;

[0051] An electrolyte input device is provided inside the cathode cavity 201. The electrolyte input device includes a liquid inlet distributor 4 attached to the inner wall of the outer side of the cathode cavity 201. One end of the liquid inlet distributor 4 extends to the outside of the tank body 6 through a liquid inlet pipe 8. Multiple liquid distribution ports 12 are evenly opened on the side of the liquid inlet distributor 4 facing the cathode plate 2. The electrolyte input direction is from the cathode to the anode. During operation, an external clean electrolyte delivery pipeline is connected to the liquid inlet pipe 8 to input the electrolyte into the liquid inlet distributor 4, and then the liquid inlet distributor 4 inputs the electrolyte into the cathode cavity 201 in the form of a surge or jet.

[0052] An electrolyte output device is provided inside the anode cavity 101. The electrolyte output device includes an overflow trough 3 located on the upper end of the inner wall of the outer side of the anode cavity 101. At least one end of the overflow trough 3 is connected to the outlet 9 to discharge the electrolyte. The electrolyte output direction is from the anode to the cathode. During operation, the liquid level in the anode cavity 101 rises to be level with the overflow trough 3. As clean electrolyte in the cathode cavity 201 is replenished through the electrolyte input device, the liquid level in the tank 6 rises and overflows through the overflow trough 3, eventually converging at the outlet 9 to discharge the tank 6.

[0053] The tank 6 is filled with an electrolyte solution made of sulfuric acid and copper sulfate aqueous solution;

[0054] Cathode plates 2 and anode plates 1 can be arranged at intervals in the cathode cavity 201 and anode cavity 101, respectively. The distribution spacing and number of cathode plates 2 and anode plates 1 can be adjusted according to the actual product size and production scale. The cathode plates 2 and anode plates 1 are connected to an external electrolysis power supply. The electrolysis power supply also includes a circuit control device for the electrolysis process. This content is prior art and will not be described in detail in this embodiment.

[0055] Example 2

[0056] Based on the device structure of Implementation 1, this embodiment provides its working method as follows:

[0057] In actual work,

[0058] S1. Arrange several cathode plates 2 and anode plates 1 in parallel independent cathode cavities 201 and anode cavities 101, and connect the cathode plates 2 and anode plates 1 to the negative and positive terminals of the electrolysis power supply, respectively.

[0059] S2. Inject clean electrolyte into cathode cavity 201 through electrolyte input device and turn on electrolysis power supply;

[0060] S3. The clean electrolyte discharges and deposits elemental copper on the surface of the cathode 2 in the cathode cavity 201, and then enters the anode cavity 101 through the connecting port 5 provided on the partition.

[0061] S4. The electrolyte that has lost copper ions is mixed with copper ions dissolved in the anode plate 1, as well as soluble and insoluble impurities in the anode cavity 101.

[0062] S5. The electrolyte carrying copper ions and impurities enters the purification system 13 through the electrolyte output device to remove impurities and retain copper ions. After impurity removal, the electrolyte retaining copper ions is returned to the cathode cavity 201 by the electrolyte input device for recycling.

[0063] Combine implementation of 1 and 2,

[0064] The copper electrolysis / electrowinning device of the present invention adopts a cathode and anode separate tank structure. The cathode cavity and the anode cavity 101 are respectively provided with an electrolyte input device and an electrolyte output device for facilitating the unidirectional flow of electrolyte solution. The cathode cavity 201 is located upstream of the anode cavity 101. During the electrolysis process, the insoluble impurities generated by the anode are discharged from the tank 6 with the flowing electrolyte solution, thereby effectively inhibiting their adhesion and adsorption on the cathode surface and affecting the quality of the anode copper.

[0065] The copper electrolysis / electrowinning device of the present invention adopts a cathode and anode separate tank structure. The cathode cavity 201 and the anode cavity 101 are respectively provided with an electrolyte input device and an electrolyte output device for facilitating the unidirectional flow of the electrolyte solution. The cathode cavity 201 is located upstream of the anode cavity 101. During the electrolysis process, silver metal ions generated by the anode are discharged from the tank 6 with the flowing electrolyte solution, thereby effectively suppressing their discharge and deposition on the cathode surface and preventing an increase in the silver content of the cathode copper.

[0066] The copper electrolysis / electrowinning device of the present invention adopts a cathode and anode separate tank structure. The cathode plate 2 and the anode plate 1 are respectively arranged in interconnected but independent cathode cavity 201 and anode cavity 101. After the anode melts and falls into the anode cavity 101, it will not directly contact the cathode plate 2 in the cathode cavity 201. During the electrolysis process, there is no need to worry about the anode plate 1 being over-dissolved and falling off, causing a short circuit, thereby reducing the residual electrode rate.

[0067] Example 3

[0068] Based on the device in Example 1 and the working method in Example 2, during the trial operation of the device, because the electrolyte solution in the tank 6 is in a flowing state, a conventional dot-matrix liquid distributor is used for liquid distribution, and the partition between the cathode cavity 201 and the anode cavity 101 is conventionally opened. During operation, after the clean electrolyte is fully discharged, the electrolyte solution in the cathode cavity 201 is almost turbulent, unable to form an orderly flow state that can alternate between old and new electrolytes. The replenished clean electrolyte cannot contact the cathode plate 2 immediately, and the electrolyte with low copper ion concentration after discharge cannot be quickly transferred to the anode cavity 101, resulting in the clean electrolyte not being able to fully and effectively contact the cathode plate 2 for discharge.

[0069] Based on this, the partition structure between the liquid inlet distributor 4 and the cathode cavity 201 and the anode cavity 101 is further improved, specifically, as follows: Figure 3-4 As shown, based on the device of Embodiment 1, both the liquid distribution port 12 and the connecting port 5 are designed as vertically spaced slits. The opening positions of the connecting port 5 and the liquid distribution port 12 correspond one-to-one and are located between two adjacent cathode plates 2. The opening distance between the connecting port 5 and the liquid distribution port 12 is consistent with the arrangement distance of the cathode plates 2.

[0070] After the above improvements, the clean electrolyte ejected from the vertical slit-shaped liquid distribution port 12 on the liquid inlet distributor 4 forms a regular and orderly "water curtain" structure with a certain flow velocity. This "water curtain" is located between two adjacent cathode plates 2 and points directly towards the vertical slit-shaped connecting port 5 on the partition plate. The flow trajectory of the clean electrolyte is as follows: Figure 4As shown, the flow trajectory passes between two adjacent cathode plates 2. The high-concentration copper ion electrolyte directly acts on the cathode plates 2 on both sides to discharge and be deposited. At the same time, with the help of the partitioning effect of the cathode plates 2, each "water curtain" will not interfere with each other to form turbulence, thereby effectively pushing the low-concentration copper ion electrolyte in front to be discharged from the vertical slit-shaped connecting port 5, improving the discharge deposition efficiency and sufficiency.

[0071] Example 4

[0072] Based on the device in Example 1 and the working method in Example 2, during the trial operation of the device, the electrolyte in the anode cavity 101 overflows directly into the outlet overflow tank 3 at the liquid level. However, the anode sludge generated after the anode dissolution naturally settles and accumulates, and its concentration is uneven. Therefore, in actual operation, on the one hand, the anode sludge is prone to accumulate at the bottom of the anode cavity 101 and needs to be cleaned frequently. On the other hand, the silver metal ions generated by the anode dissolution cannot be well carried out by the electrolyte water flow, resulting in problems such as incomplete silver recovery.

[0073] Based on this, the internal structure of the anode cavity 101 is further improved, specifically, as follows: Figure 5 As shown, based on the device of Embodiment 1, baffles 7 are provided at intervals on the inner wall of the outer side of the anode cavity 101. The upper end of the baffles 7 is higher than the liquid overflow trough 3, and the lower end is close to the bottom of the anode cavity 101. An electrolyte flow gap is left between the baffles 7 and the inner wall of the outer side of the anode cavity 101.

[0074] After the above improvements, the electrolyte in the anode cavity 101 is blocked by the baffle 7 from overflowing directly into the overflow tank 3 at the liquid level. Instead, it needs to be discharged through the electrolyte flow gap left between the baffle 7 and the outer inner wall of the anode cavity 101. Thus, a flow gap is formed as shown above. Figure 5 As shown in the water flow trajectory, the electrolyte solutions at different heights entering the anode cavity 101 from the cathode cavity 201 all converge downwards, forming a rapid water flow at the bottom of the anode cavity 101. This can carry away the dissolved and settled anode mud impurities along with metal ions, thereby achieving a more thorough and efficient discharge.

[0075] Example 5

[0076] Based on the device in Example 1 and the working method in Example 2, such as Figure 6As shown, in order for the device to operate in a cyclic manner, this embodiment is equipped with a purification system 13. The electrolyte output device is connected to the input end of the purification system 13, and the output end of the purification system 13 is connected to the electrolyte input device; thus forming an electrolyte circulation path. The purification system 13 needs to include at least components such as solid impurity filtration, silver metal ion precipitation and recovery functions, and circulation drive pump. Impurity filtration and metal ion precipitation and recovery are existing technologies, and will not be described in detail in this embodiment.

[0077] In this way, the electrolyte carrying copper ions and impurities enters the purification system 13 through the electrolyte output device to remove impurities and retain copper ions. During this process, silver ion precipitation and recovery can be carried out simultaneously. Combined with the above-mentioned inhibition of the increase in silver content of cathode copper, the silver recovery rate of electrolyte solution can be improved. In addition, the purification system 13 and the electrolytic cell 6 form a circulation system. The electrolyte with copper ions retained after impurity removal is returned to the cathode cavity 201 by the electrolyte input device for recycling, realizing continuous circulation operation of the device and ensuring the working efficiency of the device.

[0078] Example 6

[0079] Based on the device in Example 1 and the working method in Example 2, during the trial operation of the device, after the electrolytic purification is completed, it is necessary to peel off the copper deposited on the cathode plate 2. However, in actual operation, due to the condensation on the surface and edges of the exposed cathode plate immersed in the electrolyte, it is difficult to peel off in a coating-like manner on the surface of the cathode plate 2, and after peeling, it cannot form a regular shape.

[0080] Based on this, such as Figure 7-8 As shown, in this embodiment, to facilitate the peeling of copper deposits on the cathode surface, a U-shaped groove isolation strip 14 is provided on each of the left and right sides of the cathode plate 2. The U-shaped groove isolation strip 14 is made of a non-metallic material with a certain degree of flexibility and corrosion resistance. The opening width of the U-shaped groove isolation strip 14 matches the thickness of the cathode plate 2, and the bottom end of the U-shaped groove isolation strip 14 is closed. During operation, the U-shaped groove isolation strip 14 is embedded in the left and right side walls of the cathode plate to prevent the electrolyte from contacting the surface of the cathode plate 2 at that location. As a result, after electrolytic solidification, the width of the copper solidification layer will be narrower than the surface width of the cathode plate 2, and a stepped section is formed at the junction of the edge of the copper solidification layer and the surface of the cathode plate 2, which is convenient as a point of force to peel the copper solidification layer from the surface of the cathode plate 2.

[0081] Furthermore, since the U-shaped groove isolation strip 14 relies solely on friction to engage with the side of the cathode plate 2 during operation, the cathode plate 2 may become loose or shift during entry and exit from the electrolyte tank, leading to a failure in the tightness of the enclosure and the formation of copper condensation inside the U-shaped groove isolation strip 14, which affects disassembly. Since the U-shaped groove isolation strip 14 that has fallen into the electrolytic cell is difficult to retrieve, it is very troublesome to hinder the operation of the device. In addition, the fastening and installation process also relies on manual alignment, which is labor-intensive and time-consuming in the dense batch operation, and is prone to problems such as incomplete engagement.

[0082] Based on this, in this embodiment, a perforated lug plate 15 is provided on the upper end of one side of the U-shaped groove isolation strip 14, and is movably installed with the cathode plate 2 via a pin 16. The height of the perforated lug plate 15 and the pin 16 is higher than the liquid level of the cathode plate 2 after it is immersed in the electrolyte. The pin 16 has two degrees of freedom: rotation and axial sliding within a limited stroke. In this way, the U-shaped groove isolation strip 14 can be swung 90° around the pin 16 to switch between working and idle states. In both states, it does not separate from the cathode plate 2. Furthermore, to facilitate the rebound of the U-shaped groove isolation strip 14 after removal... For storage, a crank is installed at one end of the pin 16, and a tension spring 18 is connected between it and a pin 17 on the cathode plate 2. After the U-shaped groove isolation strip 14 separates from the side of the cathode plate 2 and moves a certain distance axially along the pin 16, it automatically springs back to a horizontal state. The upper rear end of the cathode plate 2 is larger than its main body, and the U-shaped groove isolation strip 14 can be limited by the step at the upper end of the cathode plate 2 after springing back. To avoid interference after the U-shaped groove isolation strips 14 on the left and right sides are horizontally stored, the two U-shaped groove isolation strips 14 are installed symmetrically on the center, and are distributed one in front and one behind after storage. Through the above structural design, on the one hand, the U-shaped groove isolation strip 14 can be prevented from separating from the cathode plate 2 and falling off; on the other hand, the pin 16 can also be used for installation positioning. After the U-shaped groove isolation strip 14 is swung and engaged, a slight tapping can ensure that it is installed in place.

[0083] In the description of the invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention and 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 the invention.

[0084] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0085] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A copper electrolysis / electrodeposition device, characterized by, The utility model relates to an electrolyte circulating device and method, comprising: a tank body; the tank body comprises a cathode cavity and an anode cavity, which are arranged side by side and communicate with each other, and electrolyte solution flows through the cathode cavity and the anode cavity in turn during operation; an electrolyte input device; the electrolyte input device is arranged on the cathode cavity and used for inputting electrolyte solution into the cathode cavity; an electrolyte output device; the electrolyte output device is arranged on the anode cavity and used for outputting electrolyte solution from the anode cavity; cathode plates and anode plates can be arranged in the cathode cavity and the anode cavity, respectively, and the cathode plates and the anode plates are connected with an electrolytic power supply; a U-shaped groove isolation belt is arranged on each of the left and right sides of the cathode plate, the U-shaped groove isolation belt is made of a non-metal material with certain flexibility and corrosion resistance, the opening width of the U-shaped groove isolation belt is consistent with the thickness of the cathode plate, the bottom end of the U-shaped groove isolation belt is closed, a hole ear plate is arranged on one side edge of the U-shaped groove isolation belt, the hole ear plate is movably connected with the cathode plate through a pin shaft, the height of the hole ear plate and the pin shaft is higher than the liquid level of the electrolyte after the cathode plate is immersed in the electrolyte, the pin shaft has two degrees of freedom, i.e., rotation and axial sliding within a limited stroke, a crank is arranged at one end of the pin shaft and connected with a pin on the cathode plate through a tension spring, the U-shaped groove isolation belt can automatically return to the horizontal state after the U-shaped groove isolation belt is separated from the side edge of the cathode plate and moves a certain distance along the pin shaft in the axial direction, the upper end and the rear end of the cathode plate are larger than the main body part of the cathode plate, the U-shaped groove isolation belt can be limited by the upper end step of the cathode plate after the U-shaped groove isolation belt returns, and the two U-shaped groove isolation belts are centrally symmetrically arranged.

2. A copper electrolysis / electrodeposition device according to claim 1, characterized in that Further comprising: a clean liquid system; the electrolyte output device is connected to the input end of the clean liquid system, and the output end of the clean liquid system is connected to the electrolyte input device; so as to form an electrolyte circulating path.

3. A copper electrolysis / electrodeposition apparatus according to claim 1, wherein The tank body is filled with an electrolyte solution prepared by mixing sulfuric acid and copper sulfate solution.

4. A copper electrolysis / electrodeposition apparatus according to claim 1, characterized in that: The electrolyte input device comprises a liquid inlet distributor arranged on the inner wall outside the cathode cavity, one end of the liquid inlet distributor is extended to the outside of the tank body through a connecting liquid inlet pipe, and a plurality of liquid distribution openings are uniformly arranged on the side of the liquid inlet distributor facing the cathode plate.

5. A copper electrolysis / electrodeposition apparatus according to claim 1, wherein: The electrolyte output device comprises a liquid outlet overflow groove arranged on the upper end of the inner wall outside the anode cavity, and at least one end of the liquid outlet overflow groove is connected to a liquid outlet to guide the electrolyte out.

6. A copper electrolysis / electrodeposition apparatus according to claim 5, wherein: Baffles are arranged on the inner wall outside the anode cavity, the upper end of the baffles is higher than the liquid outlet overflow groove, and the lower end of the baffles is close to the bottom of the anode cavity, an electrolyte flow gap is left between the baffles and the inner wall outside the anode cavity.

7. A copper electrolysis / electrodeposition apparatus according to claim 4, wherein: A partition plate is arranged between the cathode cavity and the anode cavity, and a plurality of communication openings are uniformly arranged on the partition plate.

8. A copper electrolysis / electrodeposition apparatus according to claim 7, characterized in that: The liquid distribution openings and the communication openings are vertically spaced apart, the communication openings and the liquid distribution openings are one-to-one corresponding and arranged between adjacent cathode plates, and the spacing between the communication openings and the liquid distribution openings is consistent with the spacing between the cathode plates.

9. A method of operating a copper electrolysis / electrodeposition apparatus as claimed in claim 1, characterized in that, The method comprises the following steps: S1, a plurality of cathode plates and anode plates are arranged in the cathode cavity and the anode cavity, respectively, and the cathode plates and the anode plates are connected to the negative electrode and the positive electrode of an electrolytic power supply, respectively; S2, clean electrolyte is injected into the cathode cavity through the electrolyte input device, and the electrolytic power supply is turned on. S3, the clean electrolyte discharges and deposits elemental copper on the cathode surface of the cathode cavity, and then enters the anode cavity through the communication port provided on the diaphragm; S4, the electrolyte losing copper ions mixes with the copper ions and soluble and insoluble impurities dissolved from the anode plate in the anode cavity; S5, the electrolyte carrying copper ions and impurities enters the clean liquid system through the electrolyte output device to remove the impurities and retain the copper ions, and the electrolyte retaining the copper ions after the impurities are removed is returned to the cathode cavity by the electrolyte input device for recycling.

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