Electrolytic nickel purification and impurity removal reactor

Abstract

The invention relates to the technical field of nickel metal preparation, and particularly discloses an electrolytic nickel purification and impurity removal reactor which comprises a reaction precipitation unit and a resin adsorption unit, the reaction precipitation unit comprises a reaction tank, a stirring ventilation mechanism is rotationally arranged in the reaction tank, and an adjusting liquid dropwise adding assembly is arranged above the stirring ventilation mechanism; a conveying belt parallel to the bottom wall of the reaction tank and a driving roller for driving the conveying belt are arranged below the stirring ventilation mechanism, a plurality of scrapers are arranged on the outer surface of the conveying belt, and the scrapers below the conveying belt are in contact with the bottom wall of the reaction tank; an impurity collecting tank extending downwards is arranged on one side of the lower end of the reaction tank, and a tank sealing plate is movably arranged at an opening in the upper end of the impurity collecting tank; according to the electrolytic nickel purification and impurity removal reactor disclosed by the invention, different sediments can be discharged and collected in batches, so that various different sediments can be effectively separated, and the condition that an outlet is blocked due to the fact that all the sediments are intensively discharged at a time is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of nickel metal preparation, and specifically discloses an electrolytic nickel purification and impurity removal reactor. Background Art

[0002] Electrolytic nickel is a high-purity nickel metal that is widely used in stainless steel, alloys, batteries, electronic components and other fields. During the preparation of electrolytic nickel, the electrolytic nickel anode solution contains impurity metals such as copper, iron, and cobalt, which need to be purified and removed before high-purity nickel can be electrolytically precipitated. At present, the removal of metal impurities in the electrolytic nickel anode solution mainly adopts chemical precipitation, that is, by adding a precipitant to the reaction tank and controlling the pH value to make the metal impurities form a precipitate, and then performing solid-liquid separation to remove the corresponding precipitated impurities.

[0003] For example, the utility model patent with application number 2015108128120 discloses a nickel hydroxide raw material iron removal process and a pneumatic stirring precipitation impurity removal tank used therein, the pneumatic stirring precipitation impurity removal tank includes a tank body and an exhaust pipe, a feed pipe, a steam pipe, a discharge pipe and an emptying valve connected to the tank body, the tank body includes a cylindrical reaction cylinder, an upper cover and a lower cover fixedly connected to the reaction cylinder, the feed pipe, the steam pipe and the exhaust pipe are connected to the tank body through the upper cover, the discharge pipe and the emptying valve are connected to the tank body through the lower cover, and also include a top compressed air inlet pipe, a bottom compressed air inlet pipe and a high-pressure air atomizing spray gun, the air inlet end of the top compressed air inlet pipe is connected to a compressed air source, the air inlet end of the bottom compressed air inlet pipe is connected to a compressed air source, the air outlet end is arranged on the lower cover, and the high-pressure air atomizing spray gun includes a high-pressure air port, a solution port and an injection port. This patent actually uses a precipitation method to separate the iron metal in the electrolytic nickel anode solution in the form of a precipitate, but is limited by the design of the impurity removal tank. On the one hand, all the impurity metal ions are precipitated and gathered together in the form of precipitation, and then discharged in a centralized manner after the precipitation is completed. It is impossible to separate various types of metal precipitates, resulting in some high-value metal impurities that cannot be effectively separated, and the one-time discharge of the bottom impurities is also prone to cause the outlet to be blocked, requiring manual dredging treatment; on the other hand, copper ions and nickel ions have similar chemical properties, and it is impossible to use chemical precipitation methods to effectively remove them, resulting in the low purity of the purified electrolytic nickel anode solution. Therefore, in view of the above-mentioned shortcomings of the existing nickel hydroxide raw material iron removal process and the pneumatic stirring precipitation impurity removal tank used, this application proposes an electrolytic nickel purification and impurity removal reactor that can effectively solve the above-mentioned technical problems. Summary of the invention

[0004] The present invention aims to provide an electrolytic nickel purification and impurity removal reactor, so that in the process of purifying and impurity removal of the electrolytic nickel anode solution, various impurity metal ions can be precipitated and impurities can be removed at different pH values, and they can be discharged immediately after precipitation, thereby achieving orderly separation of precipitated impurities, avoiding the accumulation of all metal ion precipitated impurities resulting in subsequent ineffective separation and discharge blockage, and combining with a specially designed resin adsorption device to efficiently adsorb and remove copper ions, thereby ensuring the purity of the electrolytic nickel solution after purification.

[0005] The present invention is achieved through the following technical solutions: An electrolytic nickel purification and impurity removal reactor comprises a reaction precipitation unit and a resin adsorption unit, wherein an infusion part is arranged between the reaction precipitation unit and the resin adsorption unit, wherein the reaction precipitation unit comprises a reaction tank, wherein a stirring and ventilation mechanism is rotatably arranged in the reaction tank, wherein a regulating liquid drop adding assembly is arranged above the stirring and ventilation mechanism, wherein a conveyor belt parallel to the bottom wall of the reaction tank and a transmission roller for driving the conveyor belt are arranged below the stirring and ventilation mechanism, wherein a plurality of scrapers are arranged on the outer surface of the conveyor belt, and wherein the scrapers below the conveyor belt are arranged in contact with the bottom wall of the reaction tank; An impurity collecting trough extending downward is provided on one side of the lower end of the reaction tank, and a sealing plate is movably provided at the upper opening of the impurity collecting trough. The sealing plate is connected to the side wall of the reaction tank through a spring and acts on the scraper moving closer. An arc plate with filter holes on the surface is provided in the impurity collecting trough, an auger blade shaft is rotatably provided above the arc plate, and a slag discharge cylinder matching the auger blade shaft is provided on the end face of the impurity collecting trough, and a solution return assembly is connected between the impurity collecting trough below the arc plate and the reaction tank.

[0006] As a further configuration of the above scheme, the resin adsorption unit includes an adsorption tank, a filter plate is provided at the lower end of the adsorption tank, a stirring mechanism is provided at the lower end of the filter plate, a stirring shaft connected to the stirring mechanism is provided above the filter plate, a stirring motor connected to the stirring shaft is provided at the top of the adsorption tank, a plurality of hollow mesh frame leaves are evenly connected to the stirring shaft, and the hollow mesh frame leaves are filled with adsorption resin.

[0007] As a further configuration of the above scheme, the adsorption tank includes a tank body and a cover, the tank body is provided with a telescopic part and a guide part for vertically lifting the cover, the stirring motor is arranged on the upper surface of the cover, a plurality of plug-in frames are evenly connected to the stirring shaft, the hollow mesh frame leaves are detachably assembled in the plug-in frames, and openings are provided on both sides of the plug-in frame which are aligned with the through holes on the hollow mesh frame leaves.

[0008] As a further configuration of the above solution, the lower end of the stirring shaft is meshedly connected with the upper end of the stirring mechanism via a toothed disk.

[0009] As a further configuration of the above scheme, the stirring and ventilation mechanism includes a hollow rotating shaft rotatably arranged in the reaction tank, a hollow stirring rod is connected to the hollow rotating shaft, and an air outlet is opened on the hollow stirring rod, the outer end of the hollow rotating shaft extending out of the reaction tank is connected to a driving assembly, and the outer end of the hollow rotating shaft is connected to the oxidizing gas source through a cover sleeve which is sealed and rotatably connected.

[0010] As a further configuration of the above solution, a pH value detection sensor is provided in the reaction tank, and the pH value detection sensor is electrically connected to a control box.

[0011] As a further configuration of the above scheme, the regulating liquid dripping assembly includes a dripping tube arranged at the upper end of the reaction tank, a row of dripping holes arranged at intervals are opened at the lower end of the dripping tube, and the end of the dripping tube extending out of the reaction tank is connected to a metering pump electrically connected to the control box through a regulating liquid delivery pipe.

[0012] As a further configuration of the above scheme, the cross-sectional shape of the sealing plate is Z-shaped, one side of the upper end of the sealing plate interacts with the scraper, and a space for storing sediment is formed between the scraper and the sealing plate, and one side of the lower end of the sealing plate seals the upper end opening of the impurity collecting tank.

[0013] As a further configuration of the above scheme, the solution return assembly includes a return pipe with two ends connected to the impurity collection tank and the reaction tank, and a return pump is arranged on the return pipe.

[0014] As a further configuration of the above scheme, a feed part and an exhaust part are provided at the upper end of the reaction tank, a liquid inlet pipe and a liquid discharge pipe are provided at the upper end of the resin adsorption unit, and the liquid infusion part is provided at the upper end of the reaction tank and connected to the liquid inlet pipe.

[0015] During the operation of the electrolytic nickel purification and impurity removal reactor disclosed in the present invention, the electrolytic nickel anode solution is first introduced into the reaction tank, and then the stirring and ventilation mechanism simultaneously introduces the oxidizing gas during the stirring process of the solution, so as to oxidize the impurity metal ions such as iron, copper, cobalt, etc. in the solution to the highest valence, and then the regulating liquid is quantitatively added to the solution to control the pH value of the solution, so that the impurities such as iron and cobalt successively form corresponding hydroxide precipitations at different pH values.

[0016] In the process of generating precipitation at each pH value, the conveyor belt is started and the precipitate is scraped to the impurity collection tank by the scraper. In the process of the scraper moving to one side of the impurity collection tank, the scraper will contact the sealing plate, thereby pushing the sealing plate to move and overcome the spring, thereby pushing the precipitate into the impurity collection tank, and then when the scraper flips upward and disengages from the sealing plate, the sealing plate will reset under the action of the spring and seal the upper end of the impurity collection tank again to prevent the change in the pH value of the upper solution from causing hydrolysis of the precipitate. When the corresponding precipitate enters the impurity collection tank, it is sent back to the anti-sense tank through the solution return assembly, and the precipitate is filtered and intercepted by the arc plate. The intercepted precipitate is then sent to the slag discharge barrel under the action of the auger blade shaft, and then sent out by the slag discharge barrel. Repeat the precipitation process at different pH values ​​until only nickel ions and copper ions are contained in the solution, and metals such as iron and cobalt are precipitated and discharged in batches to achieve effective separation.

[0017] Finally, the solution after the first precipitation and impurity removal is transported to the resin adsorption unit, and the stirring motor is started to make the stirring shaft and the stirring mechanism rotate simultaneously. During the rotation of the stirring mechanism, the solution flows up and down, and the hollow mesh frame leaves on the stirring shaft can make the solution flow through the interior and contact with the chelating resin that specifically adsorbs copper ions during the stirring process of the solution. After the copper ions are fully removed by the chelating resin, the final purified and impurity-free solution can be discharged.

[0018] In addition, the present invention also uses a special design for the resin adsorption unit structure. After the adsorption resin of the hollow mesh frame leaves fails, the hollow mesh frame leaves can be quickly extended from the tank body, and then the old hollow mesh frame leaves can be pulled out of the insertion frame. After the new hollow mesh frame leaves are installed, the unit can be quickly put into use, which greatly facilitates the resin replacement steps of the resin adsorption unit.

[0019] Compared with the prior art, the present invention has the following beneficial effects: The electrolytic nickel purification and impurity removal reactor disclosed in the present invention can precipitate and separate impurity metals such as iron and cobalt in the electrolyte at different pH values ​​through the design of the reaction precipitation unit, and the internal structure of the reaction tank is designed so that each precipitate can be immediately isolated in the impurity collection tank after being generated, on the one hand, avoiding the change of the pH value of the solution causing the precipitate to be hydrolyzed again, and on the other hand, the precipitate can be separated from the solution in the impurity collection tank, so that different precipitates can be discharged and collected in batches, so that various precipitates can be effectively separated, and the situation of concentrated discharge of all precipitates at one time causing outlet blockage can be avoided.

[0020] The reaction tank in the present invention not only realizes the stirring and mixing of the solution through the structural design of the stirring and ventilation mechanism, but also can simultaneously charge the oxidizing gas into the solution during the stirring and mixing process, thereby accelerating the oxidation reaction between the oxidizing gas and the metal impurities in the solution and improving the efficiency of one-time precipitation and impurity removal; at the same time, the structural design of the conveyor belt and the scraper can not only turn over the bottom solution, but also can push the precipitate to the impurity collection tank in real time, and under the cooperation with the sealing plate above the impurity collection tank, the upper end opening of the impurity collection tank is opened during feeding and automatically closed during other processes, so that the precipitate can be effectively isolated from the reaction solution above, the stability of the precipitate is ensured, and the solid-liquid separation and recovery of the precipitate are realized.

[0021] The present invention also designs a resin adsorption unit for the recovery of copper ions, so that the solution after one precipitation and impurity removal enters the interior of the adsorption tank, and the resin is installed in the hollow mesh frame leaves during the stirring and adsorption process. During the process of the hollow mesh frame leaves rotating and stirring the solution, the solution can flow through the internal adsorption resin and contact it, which not only avoids the resin particles from being scattered irregularly in the adsorption tank and unable to be effectively recovered, but also realizes the efficient adsorption and removal of copper ions in the solution. Combined with the detachable plug-in design of the hollow mesh frame leaves, the adsorption resin can be replaced more quickly, ensuring the impurity removal effect of the copper ions in the electrolytic nickel solution and ensuring the purity of the electrolytic nickel solution after purification and impurity removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the back three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the reaction precipitation unit and the resin adsorption unit in the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the interior of the reaction tank from a first angle in the present invention; Figure 5 This is a schematic diagram of the third perspective structure of the interior of the reaction tank in the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the enlarged structure at A in the middle; Figure 7This is a schematic diagram of the three-dimensional structure inside the adsorption tank in Example 1 of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the adsorption tank, hollow mesh frame leaves, etc. in Example 2 of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the stirring shaft, the insertion frame, the hollow mesh frame blades, etc. in Example 2 of the present invention; Fig.10 For the present invention Figure 7 Schematic diagram of the enlarged structure at point A in the middle. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Figures 1 to 10 , and describes the application in detail with reference to embodiments. Example 1

[0026] Example 1 discloses an electrolytic nickel purification and impurity removal reactor, see attached Figures 1 to 3 The main part of the reactor includes a bottom box seat 1, a control box 2, a reaction precipitation unit 3 and a resin adsorption unit 4. The reaction precipitation unit 3 and the resin adsorption unit 4 are respectively fixedly installed at both ends of the upper surface of the bottom box seat 1, and the control box 2 is connected to the front side of the bottom box seat 1 to facilitate operation by operators.

[0027] Reference Figures 3 to 6 The reaction precipitation unit 3 includes a reaction tank 301, and the upper end of the reaction tank 301 is provided with a feed part 302, an exhaust part 303 and an infusion part 304. During the purification and impurity removal reaction process, the electrolytic nickel anode solution is injected into the reaction tank 301 through the feed part 302, and the exhaust part 303 discharges the gas in the reaction tank 301. After the reaction precipitation and impurity removal is completed, the infusion part 304 inputs the solution after the first precipitation and impurity removal into the resin adsorption unit 4 for secondary adsorption and impurity removal purification.

[0028] A hollow shaft 305 extending from the side of the reaction tank 301 is rotatably arranged in the middle of the reaction tank 301, and a sealed bearing acting on the hollow shaft 305 is arranged on the side wall of the reaction tank 301. A plurality of groups of hollow stirring rods 306 are connected to the hollow shaft 305 located inside the reaction tank 301, and each group of hollow stirring rods 306 is arranged at intervals along the axial direction of the hollow shaft 305, and an exhaust hole is provided on each hollow stirring rod 306. A driving assembly 307 is connected to the outer end of the hollow shaft 305 extending from the reaction tank 301, and the driving assembly 307 is composed of a motor, a pulley and a transmission belt or a motor, a gear and other components. Finally, a cover sleeve 308 is connected to the outer end of the hollow rotating shaft 305 in a sealed and rotatable manner, and an air inlet pipe on one side of the cover sleeve 308 is connected to an external oxidizing gas source, so that an oxidizing gas (such as chlorine or compressed air) can enter the hollow rotating shaft 305, and is discharged from the air outlet 3061 during the rotation and stirring of the hollow stirring rod 306 to be fully mixed with the electrolytic nickel anode solution in the reaction tank 301, thereby oxidizing the iron, cobalt and iron dioxide in the solution, and then reacting with OH after oxidation. - The reaction generates a corresponding precipitate.

[0029] In addition, in order to accurately control the pH value of the solution in the reaction tank 301, a pH value detection sensor 309 is also provided in the reaction tank 301, and the pH value detection sensor 309 is electrically connected to the control box 2. At the same time, a dropper 310 is provided at the top of the inner cavity of the reaction tank 301, which is located directly above and parallel to the hollow rotating shaft 305, and a row of dropper holes are provided at intervals below the dropper 310. A regulating liquid delivery pipe 311 is connected to the end of the dropper 310 extending out of the reaction tank 301, and then a metering pump 312 is connected to the end of the regulating liquid delivery pipe 311. The metering pump 312 can accurately control the amount of regulating liquid dripped into the reaction tank 301 by feeding back the pH value to the control box 2, thereby achieving the effect of accurately controlling the pH value of the solution.

[0030] Transmission rollers 313 are rotatably arranged at both ends of the bottom of the reaction tank 301, and the end of one of the transmission rollers 313 is connected to a motor located on the outer side of the reaction tank 301. A conveyor belt 314 arranged parallel to the bottom wall of the reaction tank 301 is arranged between the two transmission rollers 313, and then a plurality of scrapers 315 are evenly spaced and connected to the outer side of the conveyor belt 314, so that the lower row of scrapers 315 can contact the bottom wall of the reaction tank 301. An impurity collection groove 316 extends downward at one end of the lower surface of the reaction tank 301, and the upper end opening of the impurity collection groove 316 is parallel to the bottom wall of the reaction tank 301. A slot sealing plate 317 is movably arranged in the upper opening of the impurity collecting tank 316, and a spring 318 is connected between the slot sealing plate 317 and the end wall of the reaction tank 301, so that the slot sealing plate 317 can be pushed to the middle position of the reaction tank 301 under the support force of the spring 318, thereby sealing the upper opening of the impurity collecting tank 316 to prevent the solution from entering the impurity collecting tank 316 during the reaction and impurity removal process. In the specific design, the cross-sectional shape of the slot sealing plate 317 is Z-shaped, and one side of its upper end can interact with the scraper 315, and a certain space for storing sediment is left between the scraper 315 and the slot sealing plate 317, and the lower end of the slot sealing plate 317 seals the upper opening of the impurity collecting tank 316.

[0031] An arc plate 319 is provided in the impurity collecting tank 316, and a large number of filter holes are opened on the arc plate 319. Then, an auger blade shaft 320 is rotatably provided above the arc plate 319. A slag discharge cylinder 321 matching with the auger blade shaft 320 is provided on the end surface of the impurity collecting tank 316, and a slag discharge motor connected with the auger blade shaft 320 is provided on the slag discharge cylinder 321. A return pipe 322 is connected to the impurity collecting tank 316 below the arc plate 319, and a return pump 323 is provided on the return pipe 322, and the upper end of the return pipe 322 is connected to the inlet of the side end of the feeding part 302.

[0032] In a precipitation and impurity removal process, firstly, an oxidizing gas is introduced into the reaction tank 301 to oxidize all the impure metals therein into the highest valence metal ions, and then an alkali solution is added into the reaction tank 301 through the dropper 310 to control the pH value thereof to change within a set range, so that a variety of impurity metal ions generate hydroxide precipitates in sequence at different pH values, and the conveyor belt 314 is started each time the hydroxide precipitate is generated, and the scraper 315 pushes the precipitated precipitate to the impurity collection tank 316 during the movement of the conveyor belt 314. When the scraper 315 is about to reach the impurity collecting tank 316, its upper end will contact the sealing plate 317, thereby pushing the sealing plate 317 and opening the upper end of the impurity collecting tank 316. After opening, the sediment pushed over will fall into the impurity collecting tank 316, and then separate from the sealing plate 317 during the process of the scraper 315 flipping upward. After separation, the sealing plate 317 will seal the upper end opening of the impurity collecting tank 316 again under the action of the spring 318, and then start the return pump 323 to pump the solution in the impurity collecting tank 316 into the reaction tank 301, while the sediment is trapped on the arc plate 319. At this time, it can be sent out of the impurity collecting tank 316 for collection through the auger blade shaft 320.

[0033] Reference Figure 3 and attached Figure 7 The resin adsorption unit 4 includes a vertically arranged adsorption tank 401, and a liquid inlet pipe 402 connected to the liquid infusion part 304 is arranged at the upper end of the adsorption tank 401, so that the solution after precipitation and impurity removal can be delivered to the adsorption tank 401 through the liquid inlet pipe 402, and the bottom of the adsorption tank 401 is connected to a liquid discharge pipe 403 extending from the bottom box seat 1, so that the high-purity anode solution of electrolytic nickel after secondary adsorption and impurity removal can be discharged from the liquid discharge pipe 403 into the electrolytic cell for electrolytic precipitation.

[0034] The lower end of the adsorption tank 401 is provided with a filter plate 404, the lower end of the filter plate 404 is rotatably connected with a stirring mechanism 405, and a stirring shaft 414 connected with the stirring mechanism 405 is provided above the filter plate 404. The stirring shaft 414 is located at the center of the adsorption tank 401, and its upper end is connected with a stirring motor 406 installed on the top of the adsorption tank 401, and then 2 to 4 hollow mesh frame leaves 407 are evenly arranged in the circumference of the stirring shaft 414, and a large number of through holes are provided on the side of the hollow mesh frame leaf 407, and chelated resin particles for adsorbing copper ions are filled therein.

[0035] After the solution after the precipitation and impurity removal enters the adsorption tank 401 inside, the stirring motor 406 is started to rotate the stirring shaft 414, and the hollow mesh frame leaf 407 and the stirring mechanism 405 below rotate synchronously under the drive of the stirring shaft 414. In the process that the hollow mesh frame leaf 407 rotates, it can fully interact with the solution in the adsorption tank 401, and the solution flows through the through hole and contacts with the internal chelated resin particles to adsorb and remove copper ions, and the stirring mechanism 405 below can realize the up and down flow of the solution inside the adsorption tank 401 simultaneously, so that the solution inside the whole adsorption tank 401 can fully contact with the chelated resin particles, thereby effectively adsorbing and removing the copper ions in the solution, and finally opening the gate valve on the discharge pipe 403 to discharge the electrolytic nickel anode solution after the purification and impurity removal. Example 2

[0036] Example 2 discloses an electrolytic nickel purification and impurity removal reactor that is further optimized and improved based on the technical solution in Example 1. The similarities between it and Example 1 are not described again. This Example 2 focuses on structural improvements to the resin adsorption unit 4 to facilitate rapid replacement of the chelating resin.

[0037] Reference Figures 8-10 The adsorption tank 401 in this embodiment 2 includes a tank body 4011 and a cover 4012, and the stirring motor 406 is fixedly installed at the top center of the cover 4012. A hydraulic telescopic rod 408 and a guide hole block 409 are arranged on the side of the tank body 4011, and the movable end of the hydraulic telescopic rod 408 is connected to the cover 4012, and a guide rod 410 adapted to the guide hole block 409 is arranged on the cover 4012, so that under the action of the hydraulic telescopic rod 408 and the guidance of the guide rod 410, the cover 4012 can be vertically lifted from the top of the tank body 4011, thereby realizing the opening of the upper end of the adsorption tank 401.

[0038] The lower end of stirring motor 406 is connected with stirring shaft 414, 2~4 inserting frames 411 are evenly fixed on the outer cylindrical surface of stirring shaft 414, and the two side openings of inserting frame 411 are arranged, and its radial outer end offers assembly groove.In each inserting frame 411, be equipped with a hollow mesh frame leaf 407, and the side strip of hollow mesh frame leaf 407 radial outer end is adapted with assembly groove, and then hollow mesh frame leaf 407 can be fixed in the inserting frame 411 by connecting piece 412.Similarly, a large amount of chelated resin particles are filled with in hollow mesh frame leaf 407 inside, and a large amount of through holes aligned with inserting frame 411 side openings are offered on the two side surfaces of hollow mesh frame leaf 407.Finally, the toothed disk 413 that cooperates with each other is provided between the lower end of stirring shaft 414 and stirring mechanism 405, when both are meshed by toothed disk 413, synchronous rotation can be realized under the power input of a stirring motor 406.

[0039] The present embodiment 2 is by the above-mentioned structural design to the resin adsorption unit 4, when the chelated resin particles in the hollow mesh frame leaf 407 are used for a long time and need to be replaced, start the hydraulic telescopic rod 408 first and lift the capping 4012 upwards by a certain distance, so that the insert frame 411 is located above the tank body 4011. Then take off the connector 412 on the insert frame 411 one by one, pack into the new hollow mesh frame leaf 407 again after the old hollow mesh frame leaf 407 is extracted out and fixed by the connector. After all hollow mesh frame leaves 407 are replaced, control the hydraulic telescopic rod 408 to retract so that the capping 4012 is closed on the upper end opening of the tank body 4011, until the lower end of the stirring shaft 414 is meshed with the stirring mechanism 405 tops by the toothed disk 413, that is, to represent that the refueling is completed, and the electrolytic nickel anode solution can be carried out normal adsorption and impurity removal subsequently.

[0040] The above are only preferred embodiments of the present invention and are 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. An electrolytic nickel purification and impurity removal reactor, characterized in that: It comprises a reaction precipitation unit and a resin adsorption unit, wherein an infusion part is arranged between the reaction precipitation unit and the resin adsorption unit, wherein the reaction precipitation unit comprises a reaction tank, wherein a stirring and ventilation mechanism is rotatably arranged in the reaction tank, wherein a regulating liquid drop adding assembly is arranged above the stirring and ventilation mechanism, wherein a conveyor belt parallel to the bottom wall of the reaction tank and a transmission roller for driving the conveyor belt are arranged below the stirring and ventilation mechanism, wherein a plurality of scrapers are arranged on the outer surface of the conveyor belt, and the scrapers below the conveyor belt are arranged in contact with the bottom wall of the reaction tank; An impurity collecting trough extending downward is provided on one side of the lower end of the reaction tank, and a sealing plate is movably provided at the upper opening of the impurity collecting trough. The sealing plate is connected to the side wall of the reaction tank through a spring and acts on the scraper moving closer. An arc plate with filter holes on the surface is provided in the impurity collecting trough, an auger blade shaft is rotatably provided above the arc plate, and a slag discharge cylinder matching the auger blade shaft is provided on the end face of the impurity collecting trough, and a solution return assembly is connected between the impurity collecting trough below the arc plate and the reaction tank.

2. The electrolytic nickel purification and impurity removal reactor according to claim 1, characterized in that: The resin adsorption unit includes an adsorption tank, a filter plate is arranged at the lower end of the adsorption tank, a stirring mechanism is arranged at the lower end of the filter plate, a stirring shaft connected to the stirring mechanism is arranged above the filter plate, a stirring motor connected to the stirring shaft is arranged at the top of the adsorption tank, a plurality of hollow mesh frame leaves are evenly connected to the stirring shaft, and the hollow mesh frame leaves are filled with adsorption resin.

3. The electrolytic nickel purification and impurity removal reactor according to claim 2, characterized in that: The adsorption tank comprises a tank body and a sealing cover, the tank body is provided with a telescopic member and a guide member for vertically lifting the sealing cover, the stirring motor is arranged on the upper surface of the sealing cover, a plurality of insertion frames are evenly connected to the stirring shaft, the hollow mesh frame leaves are detachably assembled in the insertion frames, and openings are provided on both sides of the insertion frame to be aligned with the through holes on the hollow mesh frame leaves.

4. The electrolytic nickel purification and impurity removal reactor according to claim 3, characterized in that: The lower end of the stirring shaft is meshed with the upper end of the stirring mechanism through a toothed disk.

5. The electrolytic nickel purification and impurity removal reactor according to claim 1, characterized in that: The stirring and ventilation mechanism includes a hollow rotating shaft rotatably arranged in the reaction tank, a hollow stirring rod is connected to the hollow rotating shaft, and an air outlet is opened on the hollow stirring rod. The outer end of the hollow rotating shaft extending out of the reaction tank is connected to a driving component, and the outer end of the hollow rotating shaft is connected to an oxidizing gas source through a cover sleeve that is sealed and rotatably connected.

6. The electrolytic nickel purification and impurity removal reactor according to claim 1, characterized in that: A pH value detection sensor is arranged in the reaction tank, and the pH value detection sensor is electrically connected to a control box.

7. The electrolytic nickel purification and impurity removal reactor according to claim 6, characterized in that: The regulating liquid dripping assembly includes a dripping tube arranged at the upper end of the reaction tank, a row of dripping holes arranged at intervals are opened at the lower end of the dripping tube, and the end of the dripping tube extending out of the reaction tank is connected to a metering pump electrically connected to the control box through a regulating liquid delivery pipe.

8. The electrolytic nickel purification and impurity removal reactor according to claim 1, characterized in that: The cross-sectional shape of the sealing plate is Z-shaped. The upper end of the sealing plate interacts with the scraper, and a space for storing sediment is formed between the scraper and the sealing plate. The lower end of the sealing plate seals the upper end opening of the impurity collecting tank.

9. The electrolytic nickel purification and impurity removal reactor according to claim 1, characterized in that: The solution return assembly comprises a return pipe with two ends connected to the impurity collection tank and the reaction tank, and a return pump is arranged on the return pipe.

10. The electrolytic nickel purification and impurity removal reactor according to claim 1, characterized in that: The upper end of the reaction tank is provided with a feeding part and an exhaust part, the upper end of the resin adsorption unit is provided with a liquid inlet pipe and a liquid discharge pipe, and the liquid infusion part is provided at the upper end of the reaction tank and connected with the liquid inlet pipe.

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