A novel acid mist treatment device for copper electrowinning

Abstract

The utility model relates to copper smelting environmental protection equipment technical field especially is involved in a kind of novel acid mist treatment device of copper electrodeposition, including electrolytic cell, electrolytic cell is installed in electrodeposition copper, the upper end of electrolytic cell is equipped with compatible gas hood, one end of electrolytic cell is fixedly connected with support frame, adjusting structure that the support frame is equipped with controllable gas hood lifting is set up, the lower end circumference of gas hood is installed with the sealing rubber strip of hollow inside, the upper end circumference of electrolytic cell is equipped with the clamping groove compatible with sealing rubber strip, effectively solve the sealing performance of gas hood and electrolytic cell surface in prior art, there is still obvious acid mist escape problem.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection equipment technology for copper smelting, and in particular to a novel acid mist treatment device for copper electrowinning. Background Technology

[0002] In the electrowinning process of copper smelting, the sulfuric acid electrolyte in the electrolytic cell continuously volatilizes and generates acid mist during electrolysis. This acid mist contains not only high concentrations of sulfuric acid droplets but also small amounts of impurities such as copper ions. If not effectively controlled, this will corrode equipment and pipes in the workshop, shortening their lifespan. Furthermore, the acid mist diffuses into the air, harming the respiratory health of operators and causing acid pollution to the surrounding environment, failing to meet national environmental emission standards.

[0003] Existing devices mostly use fixed hood-type gas collection structures. Since the electrolytic cell needs to be replaced with electrodes and replenished with electrolyte regularly, the fixed gas collection hood needs to be frequently disassembled or opened, resulting in a large amount of acid mist leakage during the operation intervals. The gas collection efficiency is usually low. Although some mobile gas collection hoods can avoid frequent disassembly, the sealing performance between the gas collection hood and the surface of the electrolytic cell is poor, and there is still a significant problem of acid mist emission. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a novel acid mist control device for copper electrowinning. This device effectively solves the problem of poor sealing performance between the gas collection hood and the electrolytic cell surface, which still results in significant acid mist emission.

[0005] The technical solution adopted by this utility model to solve the above problems is as follows: A novel acid mist treatment device using copper electrowinning includes an electrolytic cell containing electrowinning copper. A matching gas collection hood is mounted on the upper end of the electrolytic cell. A support frame is fixedly connected to one end of the electrolytic cell. The support frame is equipped with an adjustment structure that controls the raising and lowering of the gas collection hood. A hollow sealing strip is installed around the lower circumference of the gas collection hood. A groove matching the sealing strip is provided around the upper circumference of the electrolytic cell.

[0006] Preferably, the adjustment structure includes a motor installed on the upper end of the support frame, the output end of the motor is fixedly connected to a lead screw that is rotatably connected to the support frame, a support rod is slidably connected to the inner wall of the support frame, a screw cylinder that is threadedly engaged with the lead screw is fixedly connected to the inner wall of the support rod, and one end of the support rod is fixedly installed on the gas collection hood.

[0007] Preferably, an inlet check valve and an outlet check valve are respectively provided at both ends of the sealing strip, and the sealing strip is made of acid-resistant material, while the inlet check valve and the outlet check valve are made of corrosion-resistant plastic valve cores.

[0008] Preferably, the two ends of the slot are respectively provided with grooves corresponding to the inlet one-way valve and the outlet one-way valve.

[0009] Preferably, an induced draft fan connected to the interior of the gas collecting hood is installed at the upper end of the gas collecting hood.

[0010] Compared with the prior art, this utility model has the following advantages: 1. After the hollow sealing strip is embedded in the slot, the internal gas is vented through the one-way valve to form a negative pressure state. Under atmospheric pressure, it tightly adheres to the inner wall of the slot. Even if the electrolytic cell undergoes minor deformation or unevenness due to long-term use, the strip can adaptively fill the gap, effectively increasing the sealing fit and reducing the acid mist emission rate.

[0011] 2. The motor drives the lead screw to rotate, which in turn drives the support rod and the gas collection hood to rise and fall synchronously. No manual handling or disassembly is required, which greatly reduces labor costs and operating intervals. Attached Figure Description

[0012] Figure 1 This is an isometric view of a novel copper electrowinning acid mist treatment device according to this utility model; Figure 2 This is a schematic diagram of the support frame of a novel copper electrowinning acid mist treatment device according to this utility model; Figure 3 This is a schematic diagram of the gas collection hood of a novel copper electrowinning acid mist treatment device according to this utility model; The numbers in the diagram are: 1-Electrolytic cell, 2-Slot, 3-Gas collection hood, 4-Support frame, 5-Motor, 6-Exhaust fan, 7-Electrode copper, 8-Screw rod, 9-Support rod, 10-Screw barrel, 11-Sealing strip, 12-Inlet check valve, 13-Outlet check valve, 14-Groove. Detailed Implementation

[0013] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0014] like Figure 1-3 As shown, a novel acid mist treatment device using copper electrowinning includes an electrolytic cell 1, in which electrowinning copper 7 is installed. A matching gas collection hood 3 is installed at the upper end of the electrolytic cell 1. A support frame 4 is fixedly connected to one end of the electrolytic cell 1. An adjustment structure for controlling the raising and lowering of the gas collection hood 3 is provided on the support frame 4. A hollow sealing strip 11 is installed on the lower circumference of the gas collection hood 3. A groove 2 that matches the sealing strip 11 is provided on the upper circumference of the electrolytic cell 1.

[0015] The adjustment structure includes a motor 5 installed on the upper end of the support frame 4. The output end of the motor 5 is fixedly connected to a lead screw 8 that is rotatably connected to the support frame 4. A support rod 9 is slidably connected to the inner wall of the support frame 4. A screw cylinder 10 that is threadedly engaged with the lead screw 8 is fixedly connected to the inner wall of the support rod 9. One end of the support rod 9 is fixedly installed on the gas collection hood 3.

[0016] like Figure 2 As shown, when the motor 5 is started, the lead screw 8 rotates, and the screw barrel 10 drives the support rod 9 to slide downward. The gas collecting hood 3 descends synchronously with the support rod 9 and gradually approaches the upper end of the electrolytic cell 1. During the descent, the sealing strip 11 at the lower end of the gas collecting hood 3 aligns with the slot 2 at the upper end of the electrolytic cell 1, and finally the sealing strip 11 is completely embedded in the slot 2.

[0017] The sealing strip 11 is provided with an inlet one-way valve 12 and an outlet one-way valve 13 at both ends, and the sealing strip 11 is made of acid-resistant material, while the inlet one-way valve 12 and the outlet one-way valve 13 are made of corrosion-resistant plastic valve cores.

[0018] like Figure 3 As shown, when the exhaust check valve 13 is activated, the gas in the hollow cavity inside the sealing strip 11 is quickly discharged through the exhaust check valve 13, creating a negative pressure inside the cavity. Under atmospheric pressure, the sealing strip 11 tightly adheres to the inner wall of the slot 2, achieving a highly efficient seal between the gas collecting hood 3 and the electrolytic cell 1, preventing acid mist from escaping. Simultaneously, due to the negative pressure inside the cavity, the inlet check valve 12 closes tightly, preventing external air from entering and disrupting the seal. The gas collecting hood 3 rises slowly, and during this rise, the sealing strip 11 gradually... As the valve detaches from slot 2, the limiting effect of groove 14 on inlet check valve 12 and outlet check valve 13 is released. Simultaneously, the negative pressure inside sealing strip 11 gradually disappears, and external air, under atmospheric pressure, pushes open the valve core of inlet check valve 12 and enters the chamber of sealing strip 11, restoring sealing strip 11 to its original hollow state and preventing deformation and damage due to long-term negative pressure. Sealing strip 11 is made of acid-resistant material, and inlet check valve 12 and outlet check valve 13 are made of corrosion-resistant plastic valve cores, which can effectively prevent acid damage.

[0019] The two ends of the slot 2 are respectively provided with grooves 14 corresponding to the inlet one-way valve 12 and the outlet one-way valve 13.

[0020] like Figure 1 and 3 As shown, the intake check valve 12 and the exhaust check valve 13 fit precisely into the corresponding grooves 14 at both ends of the slot 2, preventing the valves from being squeezed and damaged by the slot 2.

[0021] The upper end of the gas collection hood 3 is equipped with an induced draft fan 6 that communicates with the interior of the gas collection hood 3.

[0022] like Figure 1As shown, the exhaust fan 6 at the top of the gas collection hood 3 is started. The exhaust fan 6 generates negative pressure, which draws the acid mist containing sulfuric acid droplets and copper ion impurities volatilized during the electrolysis process in the electrolytic cell 1 into the gas collection hood 3. Under the driving force of the exhaust fan 6, the acid mist enters the subsequent purification system through the connecting pipe at the top of the gas collection hood 3, thus completing the acid mist treatment.

[0023] The working process of this utility model is as follows: the motor 5 is started, the lead screw 8 rotates, the screw barrel 10 drives the support rod 9 to slide downward, the gas collecting hood 3 descends synchronously with the support rod 9, and gradually approaches the upper end of the electrolytic cell 1. During the descent, the sealing strip 11 at the lower end of the gas collecting hood 3 is aligned with the slot 2 at the upper end of the electrolytic cell 1. Finally, the sealing strip 11 is completely embedded in the slot 2. At this time, the inlet one-way valve 12 and the outlet one-way valve 13 are just inserted into the corresponding grooves 14 at both ends of the slot 2, so as to avoid the valves being squeezed and damaged by the slot 2.

[0024] After the gas collection hood 3 is in place, the motor 5 is turned off and the exhaust check valve 13 is started. The gas in the hollow cavity inside the sealing strip 11 is quickly discharged through the exhaust check valve 13, and a negative pressure is formed in the cavity. Under the action of atmospheric pressure, the sealing strip 11 tightly fits the inner wall of the slot 2, achieving a high-efficiency seal between the gas collection hood 3 and the electrolytic cell 1, preventing acid mist from escaping. At the same time, due to the negative pressure in the cavity, the valve core of the intake check valve 12 is tightly closed, preventing external air from entering and damaging the sealing effect.

[0025] Start the exhaust fan 6 at the top of the gas collection hood 3. The exhaust fan 6 generates negative pressure, which draws the acid mist containing sulfuric acid droplets and copper ion impurities volatilized during the electrolysis process in the electrolytic cell 1 into the gas collection hood 3. Under the driving force of the exhaust fan 6, the acid mist enters the subsequent purification system through the connecting pipe at the top of the gas collection hood 3, thus completing the acid mist treatment.

[0026] When electrode replacement or electrolyte replenishment is required, first turn off the induced draft fan 6, then turn on the exhaust check valve 13 to close it, and then start the motor 5 to rotate. The lead screw 8 drives the support rod 9 to slide upward, and the gas collection hood 3 rises slowly. During the rise of the gas collection hood 3, the sealing strip 11 gradually disengages from the slot 2, and the groove 14 releases the limit on the inlet check valve 12 and the outlet check valve 13. At the same time, the negative pressure inside the sealing strip 11 gradually disappears, and the external air, under the action of atmospheric pressure, pushes open the valve core of the inlet check valve 12 and enters the strip chamber, so that the sealing strip 11 returns to its original hollow shape, avoiding deformation and damage to the strip due to long-term negative pressure.

[0027] After the gas collection hood 3 rises to the highest position, the motor 5 is turned off. The operator replaces the electrodes in the electrolytic cell 1 or adds electrolyte to the standard level. During the operation, the air inlet check valve 12 remains open and the sealing strip 11 is in a natural extension and contraction state, which does not affect the operating space.

[0028] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A novel acid mist treatment device using copper electrowinning, characterized in that: The device includes an electrolytic cell (1), in which electrolytic copper (7) is installed. A matching gas collecting hood (3) is installed at the upper end of the electrolytic cell (1). A support frame (4) is fixedly connected to one end of the electrolytic cell (1). An adjustment structure that can control the lifting and lowering of the gas collecting hood (3) is provided on the support frame (4). A hollow sealing strip (11) is installed on the lower circumference of the gas collecting hood (3). A slot (2) that matches the sealing strip (11) is provided on the upper circumference of the electrolytic cell (1).

2. The novel copper electrowinning acid mist treatment device according to claim 1, characterized in that: The adjustment structure includes a motor (5) installed on the upper end of the support frame (4). The output end of the motor (5) is fixedly connected to a lead screw (8) that is rotatably connected to the support frame (4). A support rod (9) is slidably connected to the inner wall of the support frame (4). A screw cylinder (10) that is threadedly connected to the lead screw (8) is fixedly connected to the inner wall of the support rod (9). One end of the support rod (9) is fixedly installed on the gas collection hood (3).

3. The novel copper electrowinning acid mist treatment device according to claim 1, characterized in that: The sealing strip (11) is provided with an inlet check valve (12) and an outlet check valve (13) at both ends, and the sealing strip (11) is made of acid-resistant material, while the inlet check valve (12) and outlet check valve (13) are made of corrosion-resistant plastic valve cores.

4. The novel copper electrowinning acid mist treatment device according to claim 3, characterized in that: The two ends of the slot (2) are respectively provided with grooves (14) corresponding to the inlet one-way valve (12) and the outlet one-way valve (13).

5. The novel copper electrowinning acid mist treatment device according to claim 1, characterized in that: The upper end of the gas collection hood (3) is equipped with an induced draft fan (6) that communicates with the inside of the gas collection hood (3).

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