Crude silver electrolysis waste liquid recovery device

Abstract

The invention is suitable for the technical field of waste electrolyte recovery, and particularly relates to a crude silver waste electrolyte recovery device, which comprises a material receiving tank, a first precipitation cylinder and a second precipitation cylinder are fixedly arranged in the material receiving tank, the first precipitation cylinder and the second precipitation cylinder are connected through a flow dividing control valve, and the flow dividing control valve is connected with a flow mixing box; a motor is fixedly installed on the flow mixing box, an output shaft of the motor extends into the flow mixing box, a first auger and a second auger are fixedly installed on the output shaft of the motor, a first flow valve and a second flow valve are installed on the flow mixing box, a sediment storage tank is arranged on the material receiving groove and used for storing sediment, and a backwashing pump is arranged in the material receiving groove. The first precipitation cylinder and the second precipitation cylinder are arranged to filter the treated waste liquid in turn, precipitates can be continuously recycled, the blending ratio of a precipitation reagent to the electrolytic waste liquid is adjusted according to the speed of recycling the precipitates, and the problem that the precipitation reagent is wasted or precipitation is insufficient is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of electrolytic waste liquid recovery, and in particular relates to a crude silver electrolytic waste liquid recovery device. Background Art

[0002] The recycling of crude silver electrolytic waste liquid is a technology that treats the waste liquid generated from the electrolytic refining process of crude silver to recover precious metals and other valuable components. In the electrolysis process of crude silver, silver is purified by electrolysis, and this process will generate waste liquid containing a variety of metal ions (such as silver, copper, etc.). If these waste liquids are not properly treated and recycled, they will not only cause waste of resources, but also may pollute the environment. Recovery technologies usually include chemical precipitation, solvent extraction, ion exchange and other methods, with the aim of efficiently re-extracting valuable metals for reuse. This not only helps to protect the environment, but also improves resource utilization, with significant economic and environmental benefits.

[0003] The existing waste liquid recovery method is mainly based on chemical means, which converts the silver ions in the electrolytic waste liquid into precipitates by adding chemical reagents to the electrolytic waste liquid. However, the concentration of silver ions in the electrolytic waste liquid is different, and the existing technology cannot automatically adjust the amount of chemical reagents added according to the silver ion concentration in the electrolytic waste liquid, which easily leads to a reduced silver ion recovery rate or a waste of chemical reagents. Summary of the invention

[0004] The purpose of the present invention is to provide a crude silver electrolytic waste liquid recovery device, aiming to solve the problem that the prior art cannot automatically adjust the amount of chemical reagent added according to the silver ion concentration in the electrolytic waste liquid, which easily causes a decrease in the silver ion recovery rate or a waste of chemical reagents.

[0005] The present invention is achieved by providing a crude silver electrolysis waste liquid recovery device, the device comprising: A material receiving trough, in which a first sedimentation cylinder and a second sedimentation cylinder are fixedly arranged, the first sedimentation cylinder and the second sedimentation cylinder are connected through a diverter control valve, the diverter control valve is connected to a mixing box, a motor is fixedly installed on the mixing box, the output shaft of the motor extends into the mixing box, a first auger and a second auger are fixedly installed on the output shaft of the motor, the first auger and the second auger have opposite rotation directions, a first flow valve and a second flow valve are installed on the mixing box, the first flow valve and the second flow valve are respectively used to control the flow of electrolytic waste liquid and precipitation reagent, a sedimentation storage tank is provided on the material receiving trough for storing sediment, a backwash pump is provided in the material receiving trough, and the backwash pump is connected to the first sedimentation cylinder and the second sedimentation cylinder through a first pipe and a second pipe respectively.

[0006] Preferably, a slip ring is slidably arranged inside the first sedimentation cylinder and the second sedimentation cylinder, a filter membrane is fixedly installed on the inner diameter of the slip ring, a movable bracket is fixedly installed on the bottom of the slip ring, a lifting sleeve is fixedly installed on the movable bracket, a sealing cone block is fixedly installed on the lifting sleeve, a sealing cone surface is fixedly arranged on the inner wall of the first sedimentation cylinder and the second sedimentation cylinder, a magnetic block is fixedly installed on the sealing cone block, a fixed bracket is fixedly arranged on the inner wall of the first sedimentation cylinder and the second sedimentation cylinder, an electromagnet is fixedly installed on the fixed bracket, the electromagnet is coaxially arranged with the magnetic block, a fixed sleeve is fixedly arranged on the bottom of the first sedimentation cylinder and the second sedimentation cylinder, the fixed sleeve is sleeved in the lifting sleeve, a first pressure sensor is fixedly arranged on the bottom of the fixed sleeve, a spring is arranged on the first pressure sensor, and the spring is located between the fixed sleeve and the lifting sleeve.

[0007] Preferably, a core tube is fixedly installed in the sedimentation storage tank, a first filter plate and a second filter plate are arranged between the outer wall of the core tube and the inner wall of the sedimentation storage tank, an overflow hole is arranged on the top of the sedimentation storage tank, and the first sedimentation cylinder and the second sedimentation cylinder are respectively connected to the core tube through a group of guide pipes.

[0008] Preferably, an inclined surface is provided at the bottom of the receiving trough, and a discharge valve is provided at the lowest point of the receiving trough.

[0009] Preferably, a second pressure sensor is provided at the bottom of the sedimentation storage tank, and the second pressure sensor is used to detect the weight of the entire sedimentation storage tank.

[0010] Preferably, a liquid level sensor is provided in the receiving trough.

[0011] Preferably, an observation window is provided on the sedimentation storage tank.

[0012] The present invention provides a crude silver electrolytic waste liquid recovery device, which can continuously recover precipitates by arranging a first sedimentation cylinder and a second sedimentation cylinder to filter the treated waste liquid in turn, and adjust the blending ratio between the precipitation reagent and the electrolytic waste liquid according to the speed of recovering the precipitate, thereby avoiding the problem of precipitation reagent waste or insufficient precipitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the overall structure from a first perspective of a crude silver electrolysis waste liquid recovery device provided by an embodiment of the present invention; Figure 2 A schematic diagram of the overall structure from a second perspective of a crude silver electrolysis waste liquid recovery device provided by an embodiment of the present invention; Figure 3 A schematic cross-sectional view from a first perspective of a crude silver electrolysis waste liquid recovery device provided by an embodiment of the present invention; Figure 4 A schematic cross-sectional view from a second perspective of a crude silver electrolysis waste liquid recovery device provided by an embodiment of the present invention; Figure 5 for Figure 3 A partial enlarged view of point A in the middle.

[0014] In the attached drawings: 1. receiving trough; 2. first sedimentation cylinder; 3. first pipeline; 4. second pipeline; 5. second sedimentation cylinder; 6. diversion control valve; 7. sedimentation storage tank; 8. backwash pump; 9. overflow hole; 10. motor; 11. mixing box; 12. first flow valve; 13. second flow valve; 14. first auger; 15. second auger; 16. first filter plate; 17. second filter plate; 18. guide tube; 19. core tube; 20. slip ring; 21. filter membrane; 22. movable bracket; 23. lifting sleeve; 24. sealing cone block; 25. sealing cone surface; 26. fixed bracket; 27. electromagnet; 28. fixed sleeve; 29. ​​spring. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0017] like Figure 1 , Figure 2 and Figure 3 As shown, a crude silver electrolysis waste liquid recovery device provided by an embodiment of the present invention comprises: A receiving trough 1, in which a first sedimentation cylinder 2 and a second sedimentation cylinder 5 are fixedly arranged, the first sedimentation cylinder 2 and the second sedimentation cylinder 5 are connected through a diverter control valve 6, the diverter control valve 6 is connected to a mixing box 11, a motor 10 is fixedly installed on the mixing box 11, the output shaft of the motor 10 extends into the mixing box 11, a first auger 14 and a second auger 15 are fixedly installed on the output shaft of the motor 10, the first auger 14 and the second auger 15 have opposite rotation directions, a first flow valve 12 and a second flow valve 13 are installed on the mixing box 11, the first flow valve 12 and the second flow valve 13 are respectively used to control the flow of electrolytic waste liquid and precipitation reagent, a sedimentation storage tank 7 is provided on the receiving trough 1 for storing sediment, a backwash pump 8 is provided in the receiving trough 1, and the backwash pump 8 is connected to the first sedimentation cylinder 2 and the second sedimentation cylinder 5 through a first pipe 3 and a second pipe 4 respectively.

[0018] In this embodiment, when the waste liquid is recovered, the first flow valve 12 is connected to the first pump body, and the second flow valve 13 is connected to the second pump body. The first pump body is used to extract the electrolytic waste liquid, and the second pump body is used to extract the precipitation reagent, such as sodium chloride solution, whose concentration is a fixed value. The electrolytic waste liquid has different batches, and the silver ion concentration in the electrolytic waste liquid will fluctuate. The electrolytic waste liquid and the precipitation reagent are extracted at the same time and introduced into the mixed flow box 11 at the same time. The motor 10 is used to drive the first auger 14 and the second auger 15 to rotate. The first auger 14 and the second auger 15 have different rotation directions. The first flow valve 12 is arranged above the first auger 14, and the second flow valve 13 is arranged above the second auger 15. Then the electrolytic waste liquid flows directly to The first auger 14 and the precipitation reagent flow directly to the second auger 15. When the motor 10 is started, the first auger 14 and the second auger 15 drive the electrolytic waste liquid to merge with the precipitation reagent, thereby promoting the reaction between the two and increasing the reaction speed. The generated precipitate will enter the diversion control valve 6. The diversion control valve 6 introduces the precipitate and other liquids into the first sedimentation cylinder 2 or the second sedimentation cylinder 5. The first sedimentation cylinder 2 and the second sedimentation cylinder 5 are used to filter in turn to obtain the precipitate. The precipitate enters the sedimentation storage tank 7 by backwashing. The first sedimentation cylinder 2 and the second sedimentation cylinder 5 generate feedback information according to the generation speed of the precipitate, thereby adjusting the ratio of the electrolytic waste liquid to the precipitation reagent to improve the precipitation efficiency.

[0019] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As a preferred embodiment of the present invention, a slip ring 20 is slidably arranged in the first sedimentation cylinder 2 and the second sedimentation cylinder 5, a filter membrane 21 is fixedly installed on the inner diameter of the slip ring 20, a movable bracket 22 is fixedly installed on the bottom of the slip ring 20, a lifting sleeve 23 is fixedly installed on the movable bracket 22, a sealing cone block 24 is fixedly installed on the lifting sleeve 23, a sealing cone surface 25 is fixedly arranged on the inner wall of the first sedimentation cylinder 2 and the second sedimentation cylinder 5, a magnetic block is fixedly installed on the sealing cone block 24, a fixed bracket 26 is fixedly arranged on the inner wall of the first sedimentation cylinder 2 and the second sedimentation cylinder 5, an electromagnet 27 is fixedly installed on the fixed bracket 26, and the electromagnet 27 is coaxially arranged with the magnetic block, a fixed sleeve 28 is fixedly arranged at the bottom of the first sedimentation cylinder 2 and the second sedimentation cylinder 5, the fixed sleeve 28 is sleeved in the lifting sleeve 23, a first pressure sensor is fixedly arranged at the bottom of the fixed sleeve 28, a spring 29 is arranged on the first pressure sensor, and the spring 29 is located between the fixed sleeve 28 and the lifting sleeve 23.

[0020] In this embodiment, when collecting sediment, the sediment and other liquids are introduced into the first sedimentation cylinder 2 through the diverter control valve 6. Under the action of the filter membrane 21, the sediment is filtered and accumulated above the filter membrane 21. The liquid can smoothly pass through the filter membrane 21 and flow out from the holes at the bottom of the first sedimentation cylinder 2. At the beginning of filtration, there are fewer sediments on the filter membrane 21 and the liquid can pass through smoothly. As the sediment increases, the filtering effect of the filter membrane 21 will weaken, and the water pressure above the filter membrane 21 will increase to ensure that the liquid can pass through. When the pressure on the filter membrane 21 increases, the slip ring 20 will move downward, the distance between the lifting sleeve 23 and the fixed sleeve 28 will decrease, and the spring 29 will be compressed. At this time, the spring 29 acts on the first pressure sensor, and the first The pressure value detected by a pressure sensor increases with the increase of sediment. When the pressure value detected by the first pressure sensor is greater than the preset value, it is determined that the sediment has reached the preset value, and then it is determined to switch. At this time, the liquid is guided to the second sedimentation cylinder 5 through the diversion control valve 6, and no liquid enters the first sedimentation cylinder 2 temporarily. At this time, the electromagnet 27 is energized, and the electromagnet 27 attracts the magnetic block. The magnetic block drives the sealing cone block 24 to fit the sealing cone surface 25. The backwash pump 8 draws liquid from the receiving trough 1 to backwash the filter membrane 21, and flushes the sediment into the sedimentation storage tank 7. When the sediment in the second sedimentation cylinder 5 reaches the preset value, it is switched again to achieve the purpose of continuous operation. The number of the first sedimentation cylinder 2 and the second sedimentation cylinder 5 can be multiple, and the number is determined according to the sedimentation speed.

[0021] In this embodiment, when filtering, the flow rate of the electrolytic waste liquid is kept constant, and the flow rate of the precipitation reagent is increased in stages, such as increasing the flow rate every 10 seconds. During this process, the pressure value detected by the first pressure sensor is recorded, and a pressure-time curve is constructed, whose horizontal axis is the time value and whose vertical axis is the pressure value. The pressure-time curve is observed synchronously. If the slope of the pressure-time curve no longer increases, it is determined that the current flow rate of the precipitation reagent matches the current flow rate of the electrolytic waste liquid, and the silver ions in the electrolytic waste liquid can be converted into precipitation. The current flow rate of the precipitation reagent is maintained for recovery operations. In the subsequent working process, in order to detect different batches of electrolytic waste liquid, concentration detection is performed at preset time intervals. Assuming that the current flow rate of the precipitation reagent is A0, a detection is performed after an interval of 1 minute, and the flow rate of the precipitation reagent is reduced to A1. The pressure-time curve is observed: If the slope of the pressure-time curve decreases when the flow rate is A1, continue to increase the flow rate of the precipitation reagent until the slope of the pressure-time curve remains constant; If the slope of the pressure-time curve remains unchanged when the flow rate is A1, continue to reduce the flow rate of the precipitation reagent until the slope of the pressure-time curve remains constant.

[0022] like Figure 1, Figure 2 , Figure 3 , Figure 4 and Figure 5 As a preferred embodiment of the present invention, a core tube 19 is fixedly installed in the sedimentation storage tank 7, a first filter plate 16 and a second filter plate 17 are arranged between the outer wall of the core tube 19 and the inner wall of the sedimentation storage tank 7, an overflow hole 9 is arranged on the top of the sedimentation storage tank 7, and the first sedimentation cylinder 2 and the second sedimentation cylinder 5 are respectively connected to the core tube 19 through a group of guide pipes 18.

[0023] In this embodiment, when backwashing is performed, the liquid in the receiving trough 1 is extracted by the backwash pump 8 and transported to the corresponding first sedimentation cylinder 2 or the second sedimentation cylinder 5. The liquid enters from the bottom of the filter membrane 21 and is backwashed upward. The liquid will flow from the guide tube 18 into the core tube 19 with the sediment. The sediment and the liquid enter the bottom of the sedimentation storage tank 7 along the core tube 19. Since the density of the sediment is much greater than that of water, it will be deposited at the bottom of the sedimentation storage tank 7. The sedimentation storage tank 7 is filled with precipitation reagents at the beginning. When the subsequent liquid enters the sedimentation storage tank 7, the excess liquid will be discharged from the overflow hole 9. By setting the first filter plate 16 and the second filter plate 17, a small amount of sediment can be prevented from being carried away by the liquid and causing losses.

[0024] like Figure 1 As shown, as a preferred embodiment of the present invention, the bottom of the receiving trough 1 is provided with an inclined slope, and the receiving trough 1 is provided with a discharge valve at the lowest point.

[0025] like Figure 1 As shown, as a preferred embodiment of the present invention, a second pressure sensor is provided at the bottom of the sedimentation storage tank 7 , and the second pressure sensor is used to detect the weight of the sedimentation storage tank 7 as a whole.

[0026] In this embodiment, when the pressure value detected by the second pressure sensor is greater than a preset value, it is determined that the sedimentation storage tank 7 is close to full load and needs to be cleaned.

[0027] like Figure 1 As shown, as a preferred embodiment of the present invention, a liquid level sensor is provided in the receiving trough 1.

[0028] In this embodiment, when the liquid level is higher than a preset value, the liquid in the receiving tank 1 is discharged to keep the liquid level in the receiving tank 1 constant.

[0029] like Figure 1 As shown, as a preferred embodiment of the present invention, the sedimentation storage tank 7 is provided with an observation window.

[0030] In this embodiment, the observation window is used to observe the amount of sediment.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crude silver electrolysis waste liquid recovery device, characterized in that: The device comprises: A material receiving trough (1), wherein a first sedimentation cylinder (2) and a second sedimentation cylinder (5) are fixedly arranged in the material receiving trough (1), the first sedimentation cylinder (2) and the second sedimentation cylinder (5) are connected via a flow diversion control valve (6), the flow diversion control valve (6) is connected to a mixing box (11), a motor (10) is fixedly mounted on the mixing box (11), an output shaft of the motor (10) extends into the mixing box (11), a first auger (14) and a second auger (15) are fixedly mounted on the output shaft of the motor (10), and the first auger (14) and the second The rotation direction of the auger (15) is opposite. A first flow valve (12) and a second flow valve (13) are installed on the mixing box (11). The first flow valve (12) and the second flow valve (13) are used to control the flow of electrolytic waste liquid and precipitation reagent respectively. A precipitation storage tank (7) is provided on the receiving trough (1) for storing precipitation. A backwashing pump (8) is provided in the receiving trough (1). The backwashing pump (8) is connected to the first precipitation cylinder (2) and the second precipitation cylinder (5) respectively through the first pipeline (3) and the second pipeline (4).

2. The crude silver electrolysis waste liquid recovery device according to claim 1, characterized in that: Slip rings (20) are slidably disposed in the first sedimentation cylinder (2) and the second sedimentation cylinder (5); a filter membrane (21) is fixedly mounted on the inner diameter of the slip ring (20); a movable bracket (22) is fixedly mounted on the bottom of the slip ring (20); a lifting sleeve (23) is fixedly mounted on the movable bracket (22); a sealing cone block (24) is fixedly mounted on the lifting sleeve (23); a sealing cone surface (25) is fixedly mounted on the inner wall of the first sedimentation cylinder (2) and the second sedimentation cylinder (5); a magnetic block is fixedly mounted on the sealing cone block (24); and the first sedimentation cylinder (2) and the second sedimentation cylinder (5) are fixedly mounted on the inner wall of the first sedimentation cylinder (2) and the second sedimentation cylinder (5). A fixed bracket (26) is fixedly provided on the inner wall of each sedimentation cylinder (5), an electromagnet (27) is fixedly mounted on the fixed bracket (26), and the electromagnet (27) is coaxially arranged with the magnetic block. A fixed sleeve (28) is fixedly provided at the bottom of each of the first sedimentation cylinder (2) and the second sedimentation cylinder (5), and the fixed sleeve (28) is sleeved in the lifting sleeve (23). A first pressure sensor is fixedly provided at the bottom of the fixed sleeve (28), and a spring (29) is provided on the first pressure sensor. The spring (29) is located between the fixed sleeve (28) and the lifting sleeve (23).

3. The crude silver electrolysis waste liquid recovery device according to claim 2, characterized in that: A core tube (19) is fixedly installed in the sedimentation storage tank (7), a first filter plate (16) and a second filter plate (17) are arranged between the outer wall of the core tube (19) and the inner wall of the sedimentation storage tank (7), an overflow hole (9) is arranged at the top of the sedimentation storage tank (7), and the first sedimentation cylinder (2) and the second sedimentation cylinder (5) are respectively connected to the core tube (19) via a group of guide tubes (18).

4. The crude silver electrolysis waste liquid recovery device according to claim 1, characterized in that: The bottom of the material receiving trough (1) is provided with an inclined surface, and a discharge valve is provided at the lowest point of the material receiving trough (1).

5. The crude silver electrolysis waste liquid recovery device according to claim 1, characterized in that: A second pressure sensor is provided at the bottom of the sedimentation storage tank (7), and the second pressure sensor is used to detect the overall weight of the sedimentation storage tank (7).

6. The crude silver electrolysis waste liquid recovery device according to claim 1, characterized in that: A liquid level sensor is arranged in the material receiving trough (1).

7. The crude silver electrolysis waste liquid recovery device according to claim 1, characterized in that: An observation window is provided on the sedimentation storage tank (7).

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