Continuous nickel carbonate precipitation reaction tank

Abstract

The utility model relates to the technical field of nickel carbonate production, in particular to a continuous nickel carbonate precipitation reaction tank which comprises a base, two supports are arranged at the top of the base and jointly connected with a reaction tank and a continuous collecting piece, a backflow connecting pipe is arranged on the outer wall of the reaction tank, and a tank cover is connected to the top of the reaction tank through a flange. A nickel salt solution injection pipe and a carbonic acid source solution injection pipe are arranged at the top of the tank cover, a discharging pipe is arranged at the bottom end of the reaction tank, an electromagnetic valve is arranged on the discharging pipe, the continuous collecting part comprises a rectangular box body communicated with the discharging pipe, a detachable filtering box is arranged in the rectangular box body, a liquid outlet pipe is arranged at the bottom of the rectangular box body, and a pump body is arranged at the top of the base. According to the continuous nickel carbonate precipitation reaction tank, a reacted solution enters the continuous collecting piece through the discharging pipe, an unreacted solution is circulated back to the reaction tank through the pump body to be reused, meanwhile, a nickel salt solution and a carbonic acid source solution can be supplemented in real time, and the production efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of nickel carbonate production technology, specifically to a continuous nickel carbonate precipitation reaction tank. Background Technology

[0002] Nickel carbonate is an important nickel compound widely used in batteries, electroplating, catalysts, and other industrial fields. It exhibits good chemical and thermal stability. Nickel carbonate can be used as a chemical reagent and catalyst, playing a vital role in metallurgy and materials science. The main production methods for nickel carbonate include precipitation, electrolysis, and solvent extraction. Among these, precipitation is one of the most commonly used methods. This method involves mixing a nickel salt solution with a carbonate source solution, resulting in a chemical reaction that precipitates nickel carbonate. Specifically, nickel salts are mixed with carbonate source solutions such as sodium carbonate or sodium bicarbonate, reacting to produce nickel carbonate and corresponding byproducts.

[0003] Patent CN221847136U discloses a reactor for nickel carbonate production, including a reactor body. A mounting frame is installed at the top of the reactor body's inner cavity, and a filter screen is installed within the mounting frame. A stirring roller is rotatably mounted on the bottom wall of the reactor body's inner cavity, with its top end penetrating the filter screen and rotatably connected to it. A first motor is fixedly installed at the bottom of the reactor body, and the output end of the first motor is connected to the stirring roller for transmission. This invention, through the filter screen and stirring roller, can filter and crush the input raw materials, crushing larger particles and making the stirring more uniform. An air blowing mechanism can evenly disperse the filtered and crushed raw materials within the reactor body, further enhancing the mixing uniformity, reducing mixing time, and improving stirring efficiency.

[0004] Although the existing technology produces nickel carbonate through precipitation reaction, the reaction still requires waiting for the reaction to be completely completed before the solution and nickel carbonate precipitate can be completely discharged and then reinjected into the original reaction solution. This process limits the continuity of production and affects the overall production efficiency. In view of this, we propose a continuous nickel carbonate precipitation reaction tank. Utility Model Content

[0005] The purpose of this invention is to provide a continuous nickel carbonate precipitation reactor to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A continuous nickel carbonate precipitation reactor includes a base with two symmetrically arranged supports on the top of the base. The two supports are connected to the reaction tank and a continuous collection device, which fix the reaction tank and the continuous collection device to ensure structural stability. The continuous collection device is located directly below the reaction tank. The reaction tank accommodates the mixed reaction of nickel salt solution and carbonate source solution to generate nickel carbonate precipitate. A reflux connection pipe is provided on the outer wall of the reaction tank near the top to return unreacted solution to the reaction tank for recycling.

[0008] The top flange of the reaction vessel is connected to a lid, which seals the reaction vessel and prevents solution evaporation or contamination. The top of the lid is equipped with a nickel salt solution injection pipe and a carbonate source solution injection pipe. Both the top of the nickel salt solution injection pipe and the carbonate source solution injection pipe are hinged with flip-tops. A motor is located in the middle of the top of the lid, which is powered by an external power source to drive a rotating rod and stirring blades to promote solution mixing. The output shaft of the motor passes through the top of the lid and is coaxially connected to the rotating rod, transmitting power to the stirring blades. The outer wall of the rotating rod is equipped with multiple stirring blades to rotate and mix the solution, accelerating the precipitation reaction. The bottom of the reaction vessel is equipped with a discharge pipe, which is equipped with a solenoid valve to control the opening and closing of the discharge pipe and realize timed discharge. After the solution in the reaction vessel has reacted for a certain period of time, the solenoid valve opens, allowing the reacted solution and nickel carbonate precipitate in the reaction vessel to be discharged from the discharge pipe into a rectangular box.

[0009] The continuous collection unit includes a rectangular box connected to the discharge pipe, which houses the filter box and guides the liquid flow. The rectangular box contains a removable filter box to trap nickel carbonate precipitate and separate unreacted solution. An operating port for the filter box to pass through is provided on the front of the rectangular box for easy disassembly and maintenance. A liquid outlet pipe is located at the bottom of the rectangular box, near the rear, to deliver the filtered unreacted solution to the pump body. The pump body is located on the top of the base. Both the solenoid valve and the pump body are externally powered and controlled by a controller. The pump body's input end is connected to the discharge pipe via a suction pipe, and its output end is connected to the return connection pipe via a delivery pipe. The pump body delivers the unreacted solution to the reaction tank, and the nickel salt solution injection pipe and carbonate source solution injection pipe replenish the relevant solutions in a timely manner, improving production continuity. The reaction stops when the filter box has collected sufficient nickel carbonate precipitate. The operator removes the filter box to collect the nickel carbonate precipitate and quickly replaces it with a new one for the next production operation.

[0010] Preferably, the inner wall of the reaction vessel is equipped with a pH sensor and an external visual controller for detecting the pH value inside the reaction vessel and replenishing the nickel salt solution or carbonate source solution in a timely manner. The outer wall of the reaction vessel is equipped with an electric heating jacket and an external temperature controller for heating the solution inside the reaction vessel to provide a suitable reaction temperature.

[0011] Preferably, the bottom end of the rotating rod is provided with an auger, the bottom end of which is located inside the discharge pipe, and the auger spirals to push the sediment out to prevent blockage.

[0012] Preferably, the inner wall of the operating port is bonded with a frame-shaped sealing rubber, and the inner wall of the frame-shaped sealing rubber is tightly fitted to the outer side of the filter box to seal the operating port and prevent liquid leakage.

[0013] Preferably, the filter box has a cover plate on the front side, the rear side of the cover plate fits against the front side of the rectangular box to cover the operating opening, and the front side of the cover plate has a handle to facilitate the removal of the filter box by the staff.

[0014] Preferably, the rectangular box has U-shaped positioning side plates on both the left and right sides of its inner wall, and the filter box is located between the two U-shaped positioning side plates to fix the filter box and prevent it from shifting.

[0015] Preferably, a drain pipe is provided at the bottom and near the front of the rectangular box, and a control valve is provided on the drain pipe to discharge residual liquid or cleaning fluid.

[0016] Preferably, an observation window is provided at the top and near the front of the rectangular box. The observation window is a transparent acrylic plate, which allows staff to easily check the filtration status and sediment accumulation.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. In this continuous nickel carbonate precipitation reactor, the reacted solution enters the continuous collection unit through the discharge pipe, and the unreacted solution is recycled back to the reactor for reuse through the pump body, which reduces raw material waste and waste liquid discharge, meets the requirements of green production, and reduces production costs. At the same time, the nickel salt solution and carbonate source solution can be replenished in real time, and the next round of production can continue without waiting for the reaction to be completely finished, which significantly improves production efficiency.

[0019] 2. This continuous nickel carbonate precipitation reactor is equipped with a pH sensor and an external electric heating jacket, which can monitor and manually adjust the pH value and temperature of the solution in real time to ensure that the reaction is always under optimal conditions, thereby improving the formation rate and purity of nickel carbonate precipitate.

[0020] 3. This continuous nickel carbonate precipitation reactor features a filter box that can be quickly disassembled and replaced through the operating port. An observation window allows for real-time monitoring of precipitate accumulation, reducing downtime for maintenance. The frame-shaped sealing rubber and U-shaped positioning side plates further ensure the filter box's sealing and stability, preventing leakage. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0023] Figure 3 This is a partial cross-sectional structural diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the continuous collection component structure in this utility model;

[0025] In the diagram: 1. Base; 2. Support; 3. Reaction vessel; 30. Discharge pipe; 31. Solenoid valve; 32. Reflux connection pipe; 4. Tank cover; 40. Nickel salt solution injection pipe; 41. Carbonic acid source solution injection pipe; 5. Motor; 6. Rotating rod; 60. Stirring blade; 61. Screwdriver; 7. Continuous collection component; 70. Rectangular box; 700. Operation port; 71. Filter box; 710. Cover plate; 711. Handle; 72. Liquid outlet pipe; 73. Drain pipe; 74. U-shaped positioning side plate; 75. Frame-shaped sealing rubber; 76. Observation window; 8. Pump body; 80. Suction pipe; 81. Delivery pipe; 9. Electric heating jacket; 10. pH sensor. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Please see Figures 1-4 This utility model provides a technical solution:

[0029] A continuous nickel carbonate precipitation reactor includes a base 1. The top of the base 1 is provided with two supports 2 arranged symmetrically on the left and right. The two supports 2 are connected to the reaction tank 3 and the continuous collection component 7. The two supports 2 fix the reaction tank 3 and the continuous collection component 7 to ensure structural stability. The continuous collection component 7 is located directly below the reaction tank 3. The reaction tank 3 contains the mixed reaction of nickel salt solution and carbonate source solution to generate nickel carbonate precipitate. The outer wall of the reaction tank 3 and near the top is provided with a reflux connection pipe 32 to transport the unreacted solution back to the reaction tank 3 to achieve recycling.

[0030] The top flange of reaction vessel 3 is connected to a vessel cover 4, which seals the reaction vessel 3 to prevent solution evaporation or contamination. The top of the vessel cover 4 is equipped with a nickel salt solution injection pipe 40 and a carbonate source solution injection pipe 41. Both the tops of the nickel salt solution injection pipe 40 and the carbonate source solution injection pipe 41 are hinged with flip-tops. A motor 5 is located in the middle of the top of the vessel cover 4, powered by an external power source, driving the rotating rod 6 and the stirring blade 60 to promote solution mixing. The motor 5 rotates forward during the solution reaction to prevent the auger 61 from pushing the precipitate towards the discharge pipe 30. The motor 5 rotates in reverse when the precipitate is discharged from the discharge pipe 30 to ensure the auger... The precipitate is successfully discharged from the tank 61. The output shaft of the motor 5 passes through the top of the tank cover 4 and is coaxially connected to the rotating rod 6, which transmits power to the stirring blade 60. The outer wall of the rotating rod 6 is equipped with multiple stirring blades 60, which rotate the mixed solution and accelerate the precipitation reaction. The bottom end of the reaction tank 3 is equipped with a discharge pipe 30, and a solenoid valve 31 is equipped on the discharge pipe 30 to control the opening and closing of the discharge pipe 30 and realize timed discharge. When the solution in the reaction tank 3 reacts for a certain period of time, the solenoid valve 31 opens, so that the reacted solution and nickel carbonate precipitate in the reaction tank 3 are discharged from the discharge pipe 30 into the rectangular box 70.

[0031] The continuous collection unit 7 includes a rectangular box 70 connected to the discharge pipe 30, which houses the filter box 71 and guides the liquid flow. The rectangular box 70 contains a removable filter box 71 to trap nickel carbonate precipitate and separate unreacted solution. An operation port 700 is provided on the front of the rectangular box 70 for the filter box 71 to pass through, facilitating disassembly and maintenance. A liquid outlet pipe 72 is located at the bottom and near the rear of the rectangular box 70 to transport the filtered unreacted solution to the pump body 8. The pump body 8 is located on the top of the base 1. Both the solenoid valve 31 and the pump body 8 are externally powered. When the source and controller are working, the input end of the pump body 8 is connected to the outlet pipe 72 through the liquid extraction pipe 80, and the output end of the pump body 8 is connected to the return connection pipe 32 through the liquid delivery pipe 81. The unreacted solution is transported to the reaction tank 3 through the pump body 8, and the relevant solutions are replenished in a timely manner through the nickel salt solution injection pipe 40 and the carbonate source solution injection pipe 41 to improve the continuity of production. The reaction stops when the filter box 71 has collected enough nickel carbonate precipitate. The operator removes the filter box 71 to collect the nickel carbonate precipitate and quickly replaces the filter box 71 for the next production operation.

[0032] In this embodiment, the inner wall of the reaction vessel 3 is equipped with a pH sensor 10, which is connected to an external visual controller to detect the pH value inside the reaction vessel 3 and replenish the nickel salt solution or carbonate source solution in a timely manner. The outer wall of the reaction vessel 3 is equipped with an electric heating jacket 9, which is connected to an external temperature controller to heat the solution inside the reaction vessel 3 and provide a suitable reaction temperature.

[0033] Specifically, the bottom end of the rotating rod 6 is equipped with an auger 61, the bottom end of which is located inside the discharge pipe 30. The auger 61 spirals and pushes the sediment out to prevent blockage.

[0034] Furthermore, a frame-shaped sealing rubber 75 is bonded to the inner wall of the operating port 700. The inner wall of the frame-shaped sealing rubber 75 is tightly fitted to the outer side of the filter box 71 to seal the operating port 700 and prevent liquid leakage.

[0035] Furthermore, the front side of the filter box 71 is provided with a cover plate 710, the rear side of the cover plate 710 fits against the front side of the rectangular box 70, covering the operation port 700, and the front side of the cover plate 710 is provided with a handle 711, which makes it easy for the staff to take out the filter box 71.

[0036] Furthermore, the rectangular box 70 has U-shaped positioning side plates 74 on both the left and right sides of its inner wall, and the filter box 71 is located between the two U-shaped positioning side plates 74 to fix the filter box 71 and prevent it from shifting.

[0037] Furthermore, a drain pipe 73 is provided at the bottom and near the front of the rectangular box 70, and a control valve is provided on the drain pipe 73 to discharge residual liquid or cleaning fluid.

[0038] Furthermore, an observation window 76 is provided at the top and near the front of the rectangular box 70. The observation window 76 is a transparent acrylic plate, which makes it convenient for staff to check the filtration status and the accumulation of sediment.

[0039] In this embodiment of the continuous nickel carbonate precipitation reactor, nickel salt solution and sodium carbonate solution are continuously injected into the reactor 3 through nickel salt solution injection pipe 40 and carbonate source solution injection pipe 41. The two solutions are fully mixed under the action of the motor 5 driving the rotating rod 6 to drive the stirring blade 60 to rotate at high speed, and a precipitation reaction occurs in the reactor 3 to generate nickel carbonate. During the reaction, the electric heating jacket 9 adjusts the temperature of the reaction solution through the temperature controller, and the pH sensor 10 monitors the acidity and alkalinity of the solution in real time and replenishes the corresponding solution to maintain the optimal reaction conditions. After a certain reaction time, the solenoid valve 31 opens, and the reaction solution and precipitate enter the rectangular box 70 of the continuous collection element 7 through the discharge pipe 30. At this time, the auger 61 rotates under the drive of the rotating rod 6, pushing the precipitate. The solution is smoothly discharged into the filter box 71. Unreacted solution passes through the filter screen into the bottom of the rectangular box 70, and is drawn through the outlet pipe 72, pump body 8, and extraction pipe 80, and transported through the delivery pipe 81 to the return connection pipe 32, returning to the reaction tank 3 for recycling. The operator can monitor the accumulation of precipitate in the filter box 71 in real time through the observation window 76. When the amount of precipitate reaches the preset value, ensure that the solenoid valve 31 of the outlet pipe 30 is closed, then pull the handle 711 to open the cover plate 710, and pull out the filter box 71 along the U-shaped positioning side plate 74 to collect the nickel carbonate product. Then replace the filter box 71 with a new one and close the cover plate 710. The frame-shaped sealing rubber 75 ensures the sealing of the operation port 700. During cleaning or maintenance, the residual liquid is discharged through the drain pipe 73.

[0040] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A continuous nickel carbonate precipitation reactor tank comprising a base (1), characterized in that: The top of the base (1) is provided with two supports (2) arranged symmetrically left and right, two supports (2) are connected with a reaction tank (3) and a continuous collection device (7) together, the continuous collection device (7) is located directly below the reaction tank (3), the outer wall of the reaction tank (3) and the position close to the top is provided with a reflux connecting pipe (32), the top flange of the reaction tank (3) is connected with a tank cover (4), the top of the tank cover (4) is provided with a nickel salt solution injection pipe (40) and a carbonic acid source solution injection pipe (41), the middle of the top of the tank cover (4) is provided with a motor (5), the output shaft of the motor (5) penetrates the top of the tank cover (4) and is coaxially connected with a rotating rod (6), the outer wall of the rotating rod (6) is provided with a plurality of stirring blades (60), the bottom end of the reaction tank (3) is provided with a discharge pipe (30), the discharge pipe (30) is provided with a solenoid valve (31), the continuous collection device (7) comprises a rectangular box (70) in communication with the discharge pipe (30), the rectangular box (70) is provided with a detachable filter box (71), the front side of the rectangular box (70) is provided with an operation opening (700) for the filter box (71) to pass through, the bottom of the rectangular box (70) and the position close to the rear side is provided with a liquid outlet pipe (72), the top of the base (1) is provided with a pump body (8), the input end of the pump body (8) is in communication with the liquid outlet pipe (72) through a liquid pumping pipe (80), the output end of the pump body (8) is in communication with the reflux connecting pipe (32) through a liquid feeding pipe (81).

2. The continuous nickel carbonate precipitation reaction tank according to claim 1, characterized in that: The inner wall of the reaction tank (3) is provided with a pH sensor (10), and the outer wall of the reaction tank (3) is provided with an electric heating jacket (9).

3. The continuous nickel carbonate precipitation reaction tank according to claim 1, characterized in that: The bottom end of the rotating rod (6) is provided with an auger (61), and the bottom end of the auger (61) is located in the discharge pipe (30).

4. The continuous nickel carbonate precipitation reaction tank according to claim 1, characterized in that: The inner wall of the operation opening (700) is bonded with a frame-shaped sealing rubber (75), and the inner wall of the frame-shaped sealing rubber (75) is tightly fitted with the outer side of the filter box (71).

5. The continuous nickel carbonate precipitation reaction tank according to claim 1, characterized in that: The front side of the filter box (71) is provided with a cover plate (710), the rear side of the cover plate (710) is fitted with the front side of the rectangular box (70), and the front side of the cover plate (710) is provided with a handle (711).

6. The continuous nickel carbonate precipitation reaction tank according to claim 1, characterized in that: The left and right sides of the inner wall of the rectangular box (70) are provided with U-shaped positioning side plates (74), and the filter box (71) is located between the two U-shaped positioning side plates (74).

7. The continuous nickel carbonate precipitation reaction tank according to claim 1, characterized in that: The bottom of the rectangular box (70) and the position close to the front side is provided with a drain pipe (73), and the drain pipe (73) is provided with a control valve.

8. The continuous nickel carbonate precipitation reaction tank according to claim 1, characterized in that: The top of the rectangular box (70) and the position close to the front side is provided with an observation window (76), and the observation window (76) is a transparent acrylic plate.

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