Nickel sulfamate iron removal precipitation device

Abstract

The utility model relates to nickel compound processing technical field, and disclose a kind of nickel sulfamate iron removal precipitation device, comprising: treatment pond, the one side of treatment pond is equipped with the cloth structure for feeding, cloth structure includes cloth pipe, extension pipe and manifold, extension pipe is fixedly connected with cloth pipe, cloth pipe and extension pipe jointly form a spout with throat, extension pipe is fixedly connected with several manifold extending into throat;Hierarchical processing structure, by cloth pipe connection conveying material's spray pump, due to the design of cloth pipe bundle mouth, material is extruded after entering extension pipe from cloth pipe, and flow rate increases, and then manifold will suck the added material under the venturi effect, venturi mixer ensures that reagent and solution are mixed uniformly in an instant, and oxidize fully;Multi-stage reaction precipitation is combined with inclined plate sedimentation, so that iron slag is settled more thoroughly, effectively reduces the iron content in nickel sulfamate solution after purification, and lays a foundation for improving the purity of electroplated nickel layer.

Description

Technical Field

[0001] This utility model relates to the field of nickel compound treatment technology, and in particular to a nickel aminosulfonate iron removal precipitation device. Background Technology

[0002] Iron impurities (Fe) are present in the production of nickel aminosulfonate or during the recovery of electroplating solutions. 2+ / Fe 3+ Removal of iron impurities is one of the key process steps. The presence of iron impurities will significantly affect the quality of the electroplated nickel layer, leading to problems such as brittleness, porosity, or spots.

[0003] Existing sedimentation devices, such as the systems disclosed in announcements CN202272789U and CN102390899A, although achieving the recycling of nickel sulfamate wastewater, mostly rely on the series operation of multiple independent tanks (such as pH adjustment tanks and sedimentation tanks). This results in drawbacks such as large equipment footprint, long process flow, and the need for multiple sedimentation and sludge transfers. In addition, traditional mixing methods may not be vigorous or uniform enough, leading to insufficient reaction between oxidants and reducing agents and affecting iron removal efficiency. Furthermore, if the design of the sedimentation zone does not fully consider fluid dynamics, it can easily lead to problems such as slow settling rate, low compaction of sediment, and poor solid-liquid separation effect.

[0004] Therefore, we propose a nickel aminosulfonate iron removal precipitation device. Utility Model Content

[0005] The present invention mainly addresses the technical problem of insufficient reaction between materials and reagents affecting precipitation effect, and provides a nickel aminosulfonate iron removal precipitation device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a nickel aminosulfonate iron removal precipitation device, comprising: A processing tank, wherein a feeding structure is provided on one side of the processing tank, the feeding structure includes a feeding pipe, an extension pipe and a manifold, the extension pipe is fixedly connected to the feeding pipe, the feeding pipe and the extension pipe together form a nozzle with a throat, and the extension pipe is fixedly connected to several manifolds extending into the throat. The graded treatment structure is set inside the treatment tank to grade and settle materials.

[0007] In a preferred embodiment of this utility model, both the fabric tube and the extension tube are round tubes, the end of the fabric tube tapers to form a trumpet shape, and the extension tube is welded and fixed to the smaller end of the fabric tube.

[0008] In a preferred embodiment of this utility model, the manifold is an L-shaped pipe, with its port angled through the extension pipe and into the joint between the fabric pipe and the extension pipe.

[0009] In a preferred embodiment of this utility model, the fabric structure further includes a temporary storage box, a metering valve, and a connecting pipe. The temporary storage box is fixedly installed with the fabric pipe. The interior of the temporary storage box is hollow. The manifold is connected to the chamber of the temporary storage box. The connecting pipe is fixedly installed with the inlet of the metering valve. The outlet of the metering valve is connected to the temporary storage box.

[0010] In a preferred embodiment of this utility model, the fabric structure further includes a diversion plate, and several diversion plates are fixedly installed on the inner wall of the extension tube, the diversion plates forming a spiral plate.

[0011] In a preferred embodiment of this utility model, the graded processing structure includes a first stirring motor, a second stirring motor, an inclined blade stirrer, a frame stirrer, and a partition. The partition is fixedly installed with the processing tank and divides the processing tank into two processing chambers. The first stirring motor and the second stirring motor are both fixedly installed on the top of the processing tank. The inclined blade stirrer is connected to the output shaft of the first stirring motor, and the frame stirrer is connected to the output shaft of the second stirring motor.

[0012] As a preferred embodiment of the present invention, the graded treatment structure further includes an overflow pipe and a first sewage pipe, both of which are located on one side of the partition and are fixedly connected to the treatment tank. The overflow pipe is close to the top of the treatment tank, and the first sewage pipe is close to the bottom of the treatment tank.

[0013] In a preferred embodiment of the present invention, the graded treatment structure further includes a second drain pipe and a liquid outlet pipe. The second drain pipe and the liquid outlet pipe are located on the same side of the partition. Both the second drain pipe and the liquid outlet pipe are fixedly connected to the treatment tank. The second drain pipe is located near the bottom of the treatment tank, and the liquid outlet pipe is located on the side wall of the treatment tank and near the top of the treatment tank.

[0014] This invention provides a nickel aminosulfonate iron removal precipitation device. It has the following beneficial effects: 1. This nickel sulfamate iron removal precipitation device connects to a pump that transports materials via a distribution pipe. Due to the design of the distribution pipe's constricted opening, the material is compressed and its flow rate increases after entering the extension pipe from the distribution pipe. Consequently, under the Venturi effect, the manifold will draw in the added material. The Venturi mixer ensures that the reagent and solution are instantly and uniformly mixed, resulting in sufficient oxidation. The combination of multi-stage reaction precipitation and inclined plate sedimentation makes the iron slag settle more thoroughly, effectively reducing the iron content in the purified nickel sulfamate solution and laying the foundation for improving the purity of the electroplated nickel layer.

[0015] 2. This nickel sulfamate iron removal precipitation device has a connecting pipe connected to the discharge port of the spray pump that delivers the reagent. The amount of material entering the temporary storage tank is controlled by a metering valve. Multiple manifolds are welded and fixed to the temporary storage tank. The reagent entering the temporary storage tank chamber is drawn into the extension pipe by each manifold and mixed with the material. With the help of the controller, precise proportioning can be achieved. The mixture flowing through the extension pipe is sheared by a flow divider to promote mixing, ensuring that the material is uniformly mixed before entering the treatment tank, thus ensuring the efficiency and effect of iron removal.

[0016] 3. This nickel sulfamate iron removal precipitation device connects a first stirring motor and a second stirring motor to a controller. The first stirring motor and the second stirring motor drive an inclined blade agitator and a frame agitator respectively to stir the mixture on both sides of the baffle. The second stirring motor is more suitable for the initial rapid mixing of reagents and materials, while the frame agitator can avoid breaking the alum flocs while ensuring the flowability of materials. The design of the baffle separating the treatment tank chamber can realize two-stage precipitation. The height of the baffle can be lower than the height inside the treatment tank chamber or an opening can be made at the top of the baffle to allow for the flow and transition of materials on both sides. Attached Figure Description

[0017] Figure 1 This is one of the overall perspective views of this utility model; Figure 2 This is the second overall perspective view of the present utility model; Figure 3 This is a schematic diagram of the internal structure of the treatment tank of this utility model; Figure 4 This is a three-dimensional view of the fabric structure of this utility model; Figure 5 This is a partial cross-sectional view of the extension tube of this utility model.

[0018] Legend: 10. Treatment tank; 11. Distribution pipe; 12. Extension pipe; 13. Manifold; 14. Temporary storage tank; 15. Metering valve; 16. Connecting pipe; 17. Diverter plate; 20. First stirring motor; 21. Second stirring motor; 22. Inclined blade agitator; 23. Frame agitator; 24. Baffle plate; 25. Overflow pipe; 26. First drain pipe; 27. Second drain pipe; 28. Liquid outlet pipe. Detailed Implementation

[0019] A nickel aminosulfonate iron removal precipitation device, such as Figure 1 , Figure 4 and Figure 5 As shown, it includes: The treatment tank 10 has a feeding structure on one side. The feeding structure includes a feeding pipe 11, an extension pipe 12, and a manifold 13. The extension pipe 12 is fixedly connected to the feeding pipe 11. The feeding pipe 11 and the extension pipe 12 together form a nozzle with a throat. The extension pipe 12 is fixedly connected to several manifolds 13 extending into the throat. The feeding pipe 11 and the extension pipe 12 are both round pipes. The end of the feeding pipe 11 tapers to form a trumpet shape. The extension pipe 12 is welded and fixed to the smaller end of the feeding pipe 11. The manifold 13 is an L-shaped pipe. The end of the manifold 13 obliquely passes through the extension pipe 12 and enters the joint between the feeding pipe 11 and the extension pipe 12. In this scheme, a spray pump for conveying materials is connected through a distribution pipe 11. Due to the design of the constricted opening of the distribution pipe 11, the material is squeezed and its flow rate increases after entering the extension pipe 12 from the distribution pipe 11. Then, under the Venturi effect, the manifold 13 will suck in the added material. The Venturi mixer ensures that the reagent and solution are mixed uniformly and instantly, and the oxidation is sufficient. The combination of multi-stage reaction precipitation and inclined plate sedimentation makes the iron slag settle more thoroughly, effectively reducing the iron content in the purified nickel aminosulfonate solution, laying the foundation for improving the purity of the electroplated nickel layer.

[0020] like Figure 4 and Figure 5 As shown, the fabric structure also includes a temporary storage box 14, a metering valve 15, and a connecting pipe 16. The temporary storage box 14 is fixedly installed with the fabric pipe 11. The interior of the temporary storage box 14 is hollow. The manifold 13 is connected to the chamber of the temporary storage box 14. The connecting pipe 16 is fixedly installed with the inlet of the metering valve 15. The outlet of the metering valve 15 is connected to the temporary storage box 14. In this scheme, the connecting pipe 16 is connected to the outlet of the spray pump that delivers the agent. The amount of material entering the temporary storage box 14 is controlled by the metering valve 15. Multiple manifolds 13 are welded and fixed to the temporary storage box 14. The agent entering the chamber of the temporary storage box 14 is drawn into the extension pipe 12 by each manifold 13 and mixed with the material. With the help of the controller, precise proportioning can be achieved.

[0021] like Figure 5 As shown, the fabric structure also includes a flow divider 17. Several flow dividers 17 are fixedly installed on the inner wall of the extension pipe 12. The flow dividers 17 form a spiral plate. As a supplement to the above scheme, the flow dividers 17 shear the mixture flowing through the extension pipe 12 to promote its mixing, ensuring that the material is uniformly mixed before entering the treatment tank 10, thus ensuring the efficiency and effect of iron removal.

[0022] like Figure 1 and Figure 3 As shown, the graded treatment structure is set inside the cavity of the treatment tank 10 for graded sedimentation of materials. The staged processing structure includes a first stirring motor 20, a second stirring motor 21, an inclined blade stirrer 22, a frame stirrer 23, and a partition 24. The partition 24 is fixedly installed in the processing tank 10 and divides the tank 10 into two processing chambers. Both the first stirring motor 20 and the second stirring motor 21 are fixedly installed on the top of the processing tank 10. The inclined blade stirrer 22 is connected to the output shaft of the first stirring motor 20, and the frame stirrer 23 is connected to the output shaft of the second stirring motor 21. This area mainly involves rapid redox reactions and crystal nucleation. The inclined blade stirrer 22 operates at a relatively high speed (recommended range 100-300 rpm), controlled by the first stirring motor 20 via frequency conversion. The higher shear force helps to rapidly disperse the added oxidant (such as H2O2) and Fe. 2+ Oxidized to Fe 3+ And initially form tiny ferric hydroxide crystal nuclei. The bottom of the baffle (24) on this side is designed as a cone shape to facilitate the collection of precipitates into the first drain pipe 26. The rotation speed of the frame agitator 23 should be slow (recommended range 20-60 rpm), controlled by the second agitator motor 21 through frequency conversion. Slow stirring aims to promote the collision and flocculation of small particles into large and dense flocs, while avoiding the shearing and breaking of the already formed flocs. The height of the baffle 24 should be lower than the wall of the treatment tank 10, or an overflow weir should be opened on its top to allow the supernatant after the first stage reaction to overflow smoothly into the second stage for continued sedimentation and separation. The bottom of the second stage can also be designed as a cone shape to connect to the second drain pipe 27.

[0023] Baffle 24: Its installation position and height need to be hydraulically calculated to ensure reasonable flow distribution and pressure difference balance between the two stages. The connection between baffle 24 and the bottom and wall of the pool needs to be sealed to prevent short-circuit flow. In this scheme, by connecting the first stirring motor 20 and the second stirring motor 21 to the controller, the first stirring motor 20 and the second stirring motor 21 drive the inclined blade stirrer 22 and the frame stirrer 23 respectively to stir the mixture on both sides of the partition 24. The second stirring motor 21 is more suitable for the initial rapid mixing of reagents and materials, while the frame stirrer 23 can avoid breaking the alum floc while ensuring the flowability of materials. The design of the partition 24 to divide the chamber of the treatment tank 10 can realize two-stage sedimentation. The height of the partition 24 can be lower than the height inside the chamber of the treatment tank 10, or an opening can be made at the top of the partition 24 to allow the flow and transition of materials on both sides.

[0024] like Figure 2As shown, the graded treatment structure also includes an overflow pipe 25 and a first sewage pipe 26. Both the overflow pipe 25 and the first sewage pipe 26 are located on one side of the partition 24. Both the overflow pipe 25 and the first sewage pipe 26 are fixedly connected to the treatment tank 10. The overflow pipe 25 is close to the top of the treatment tank 10, and the first sewage pipe 26 is close to the bottom of the treatment tank 10. The graded treatment structure also includes a second sewage pipe 27 and a liquid outlet pipe 28. The second sewage pipe 27 and the liquid outlet pipe 28 are located on the same side of the partition 24. Both the second sewage pipe 27 and the liquid outlet pipe 28 are fixedly connected to the treatment tank 10. The second sewage pipe 27 is located near the bottom of the treatment tank 10, and the liquid outlet pipe 28 is located on the side wall of the treatment tank 10 and close to the top of the treatment tank 10. In this scheme, the upper layer of clear liquid in one side chamber of partition 24 is discharged through overflow pipe 25, the first drain pipe 26 is used to discharge the sediment at the bottom, the liquid outlet pipe 28 is used to discharge the clear liquid after two stages of treatment, and the second drain pipe 27 is used to discharge the sediment after two stages of treatment, so as to achieve precise sewage discharge.

[0025] The working principle of this utility model is as follows: The connecting pipe 16 is connected to the outlet of the spray pump that delivers the medicine. The amount of material entering the temporary storage tank 14 is controlled by the metering valve 15. Multiple manifolds 13 are welded and fixed to the temporary storage tank 14. The medicine entering the chamber of the temporary storage tank 14 is drawn into the extension pipe 12 by each manifold 13 and mixed with the material. The distribution pipe 11 is connected to the spray pump that delivers the material. Due to the constricted design of the distribution pipe 11, the material is compressed and its flow rate increases after entering the extension pipe 12 from the distribution pipe 11. Then, under the Venturi effect, the manifold 13 will draw in the added material. The flow divider 17 shears the mixture flowing through the extension pipe 12 to promote mixing. The Venturi mixer ensures that the medicine and solvent are mixed. The liquid is instantly and uniformly mixed. By connecting the first stirring motor 20 and the second stirring motor 21 to the controller, the first stirring motor 20 and the second stirring motor 21 drive the inclined blade stirrer 22 and the frame stirrer 23 respectively to stir the mixture on both sides of the partition 24. The second stirring motor 21 is more suitable for the initial rapid mixing of the agent and the material, while the frame stirrer 23 can avoid breaking the alum floc while ensuring the flowability of the material. The upper clear liquid in one side of the partition 24 is discharged through the overflow pipe 25. The first drain pipe 26 is used to discharge the sediment at the bottom, while the liquid outlet pipe 28 is used to discharge the clear liquid after two stages of treatment, and the second drain pipe 27 is used to discharge the sediment after two stages of treatment.

[0026] The tapered bell design of the feed tube 11 is recommended to have a contraction angle of 20°-30°. The straight section length of the extension tube 12 should be no less than 5 times its diameter to ensure that the fluid can form stable turbulence after the throat, which is beneficial for the suction and mixing of the manifold 13. The port of the manifold 13 extending into the throat should preferably be machined into a bevel, and its orientation should be consistent with the flow direction of the main fluid to enhance the suction effect and reduce flow resistance. The diameter and number of manifolds 13 need to be designed and calculated based on the flow rate of the liquid to be treated and the required dosage of the drug to ensure that, under the design flow rate of the main fluid, the throat can generate sufficient negative pressure to smoothly draw in and initially disperse the drug. The temporary storage tank 14 should be equipped with a liquid level observation window or a liquid level sensor to monitor the reagent level. The metering valve 15 is preferably a precision solenoid valve or metering pump, whose control signal is connected to a central controller (such as a PLC). The controller can dynamically adjust the opening degree or frequency of the metering valve 15 according to the preset ratio of reagent to nickel sulfamate solution (such as stoichiometry) and the detected flow signal of the raw solution (if a flow meter is installed at the front end), achieving precise automatic quantitative addition and ensuring the chemical conditions required for oxidation and precipitation reactions. The installation of the flow divider 17 not only serves to guide the flow, but its key function is to disrupt the laminar flow state of the fluid, generate strong shear and vortex, so that the reagent and nickel sulfamate solution can be fully mixed at the microscopic level in this section of the pipe, laying the foundation for subsequent rapid reaction. The edge of the flow divider 17 should be tightly fitted to the inner wall of the extension pipe 12, which can be achieved by welding or integral casting process.

[0027] The treatment tank (10), the distribution pipe (11), the extension pipe (12), the manifold (13), the temporary storage tank (14), the partition (24), and all parts that come into contact with the solution should be made of corrosion-resistant materials, such as engineering plastics like polypropylene (PP), polyvinyl chloride (PVC), and high-density polyethylene (HDPE), or stainless steel 316L, and the welds should be passivated. Critical friction or wear parts (such as agitator blades) can be made of titanium or have a corrosion-resistant coating sprayed on the surface.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A nickel aminosulfonate iron removal precipitation device, characterized in that, include: A processing tank (10) is provided on one side with a feeding structure. The feeding structure includes a feeding pipe (11), an extension pipe (12), and a manifold (13). The extension pipe (12) is fixedly connected to the feeding pipe (11). The feeding pipe (11) and the extension pipe (12) together form a nozzle with a throat. The extension pipe (12) is fixedly connected to several manifolds (13) extending into the throat. A graded treatment structure is set inside the cavity of the treatment tank (10) for graded sedimentation of materials.

2. The nickel aminosulfonate iron removal precipitation device according to claim 1, characterized in that: Both the fabric tube (11) and the extension tube (12) are round tubes. The port of the fabric tube (11) tapers to form a trumpet shape. The extension tube (12) is welded and fixed to the smaller port of the fabric tube (11).

3. The nickel aminosulfonate iron removal precipitation device according to claim 1, characterized in that: The manifold (13) is an L-shaped pipe, and the port of the manifold (13) is inclined through the extension pipe (12) and enters the joint between the fabric pipe (11) and the extension pipe (12).

4. The nickel aminosulfonate iron removal precipitation device according to claim 1, characterized in that: The fabric structure also includes a temporary storage box (14), a metering valve (15), and a connecting pipe (16). The temporary storage box (14) is fixedly installed with the fabric pipe (11). The interior of the temporary storage box (14) is hollow. The manifold (13) is connected to the chamber of the temporary storage box (14). The connecting pipe (16) is fixedly installed with the inlet of the metering valve (15). The outlet of the metering valve (15) is connected to the temporary storage box (14).

5. The nickel aminosulfonate iron removal precipitation device according to claim 1, characterized in that: The fabric structure also includes a diversion plate (17), and several diversion plates (17) are fixedly installed on the inner wall of the extension tube (12). The diversion plates (17) form a spiral plate.

6. The nickel aminosulfonate iron removal precipitation device according to claim 1, characterized in that: The graded processing structure includes a first stirring motor (20), a second stirring motor (21), an inclined blade stirrer (22), a frame stirrer (23), and a partition (24). The partition (24) is fixedly installed on the processing tank (10) and divides the processing tank (10) into two processing chambers. The first stirring motor (20) and the second stirring motor (21) are both fixedly installed on the top of the processing tank (10). The inclined blade stirrer (22) is connected to the output shaft of the first stirring motor (20), and the frame stirrer (23) is connected to the output shaft of the second stirring motor (21).

7. The nickel aminosulfonate iron removal precipitation device according to claim 6, characterized in that: The graded treatment structure also includes an overflow pipe (25) and a first sewage pipe (26). The overflow pipe (25) and the first sewage pipe (26) are both located on one side of the partition (24). The overflow pipe (25) and the first sewage pipe (26) are both fixedly connected to the treatment tank (10). The overflow pipe (25) is close to the top of the treatment tank (10), and the first sewage pipe (26) is close to the bottom of the treatment tank (10).

8. The nickel aminosulfonate iron removal precipitation device according to claim 6, characterized in that: The graded treatment structure also includes a second drain pipe (27) and a liquid outlet pipe (28). The second drain pipe (27) and the liquid outlet pipe (28) are located on the same side of the partition (24). The second drain pipe (27) and the liquid outlet pipe (28) are both fixedly connected to the treatment tank (10). The second drain pipe (27) is located near the bottom of the treatment tank (10), and the liquid outlet pipe (28) is located on the side wall of the treatment tank (10) and near the top surface of the treatment tank (10).

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