Cerium carbonate continuous precipitation reactor

Abstract

The utility model relates to the technical field of chemical production, in particular to a cerous carbonate continuous precipitation reactor which comprises a support, a constant-temperature kettle is mounted in the middle of the top of the support, a precipitation kettle is loaded in the constant-temperature kettle, a gap is formed between the outer wall of the precipitation kettle and the constant-temperature kettle, and the bottoms of the precipitation kettle and the constant-temperature kettle are jointly communicated with a fluid transmission pump pipe. A first motor is mounted at the top of the sedimentation kettle, an output shaft of the first motor extends into the sedimentation kettle and is provided with a stirring paddle, a first centrifugal filter cartridge and a second centrifugal filter cartridge are fixed to the two sides of the top in the support respectively, the conveying end of the fluid conveying pump pipe is communicated with the upper end of the first centrifugal filter cartridge, and the top of the second centrifugal filter cartridge is communicated with a suction assembly. According to the utility model, the motor II drives the gear and the mixing paddle to rotate, so that pretreatment under two different conditions can be carried out at the same time, and the raw material liquid preparation speed and efficiency are improved; due to the connection between the double-container reaction cylinder and the fusion box, the materials can continuously and stably flow into the sedimentation kettle, so that continuous material supply is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical production, especially to a continuous precipitation reactor of cerium carbonate. BACKGROUND

[0002] The chemical formula of cerium carbonate is Ce2(CO3)3, which is a carbonate of rare earth element cerium. It usually exists in the form of white or light yellow powder, has good thermal stability and chemical stability; and as an important rare earth compound, cerium carbonate is widely used in catalysts, polishing powder, ceramic materials and other fields.

[0003] The main reason for the precipitation reaction of cerium carbonate is to separate high-purity solid cerium carbonate from the solution, which is a key step in producing high-quality rare earth materials.

[0004] In the traditional system for the precipitation reaction of cerium carbonate, there is usually only one reaction container for pretreatment, which results in the processing of raw material liquid under single condition each time. This single-thread operation not only limits the preparation speed of raw material liquid, but also increases the overall production time.

[0005] Therefore, a continuous precipitation reactor of cerium carbonate is specially designed to solve the above technical problems. SUMMARY

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a continuous precipitation reactor of cerium carbonate.

[0007] A continuous cerium carbonate precipitation reactor includes a support, a constant-temperature vessel mounted at the center of the top of the support, a settling vessel loaded inside the constant-temperature vessel, and a gap between the outer wall of the settling vessel and the constant-temperature vessel. A fluid transfer pump pipe connects the bottom of the settling vessel and the constant-temperature vessel. A motor is mounted on the top of the settling vessel, with its output shaft extending into the settling vessel and equipped with an agitator. Centrifugal filter cartridges one and two are fixed on opposite sides of the top of the support. The transmission end of the fluid transfer pump pipe is connected to the upper end of centrifugal filter cartridge one. A suction assembly is connected to the top of centrifugal filter cartridge two, with its extraction end penetrating the upper part of the constant-temperature vessel and connecting to the upper left side of the settling vessel. The suction assembly surrounds the inside of the settling vessel. A hot and cold circulating water tank is mounted on the front side of the top of the support, and a piping assembly is installed on the hot and cold circulating water tank. The water tank piping assembly is connected to the upper front of the thermostatic reactor. A circulation pump pipe is installed in the gap between the settling tank and the thermostatic reactor. The flow end of the circulation pump pipe is connected to the piping assembly. A double-tank reaction cylinder is installed on the top rear side of the support. A stirring assembly is installed inside the double-tank reaction cylinder. A three-way valve is connected to the bottom of the double-tank reaction cylinder. A melting tank is installed on the top rear side of the support. One side of the upper part of the melting tank is connected to the three-way valve. The other side of the upper part of the melting tank is connected to a delivery pipe. The upper end of the delivery pipe passes through the thermostatic reactor and is connected to the upper rear side of the settling tank. Addition pipes are connected to the upper parts of centrifugal filter cylinder one, centrifugal filter cylinder two, hot and cold circulating water tank, and double-tank reaction cylinder. Output pipes extending to the outside are connected to the bottom of centrifugal filter cylinder one and centrifugal filter cylinder two. Solid transfer pumps are connected to one side of the bottom of centrifugal filter cylinder one and centrifugal filter cylinder two.

[0008] To further explain, the suction assembly on centrifuge filter cartridge two includes a suction pump pipe and a stratified extraction pipe. The top of centrifuge filter cartridge two is connected to the suction pump pipe. The extraction end of the suction pump pipe passes through the upper part of the constant temperature vessel and is connected to the upper left side of the settling vessel. The settling vessel is equipped with a stratified extraction pipe for extracting liquid phase separation material. The upper end of the stratified extraction pipe is connected to the extraction end of the suction pump pipe. The stratified extraction pipe is arranged in a semi-circular ring wall shape on the front side of the settling vessel. The stratified extraction pipe is equipped with at least three extraction pipes at different horizontal heights, and the extraction ends of the extraction pipes are all bent downwards.

[0009] To further explain, the piping components on the hot and cold circulating water tank include a heater, a chiller, a cold water pump pipe, and a hot water pump pipe. The heater is installed in the lower part of the hot and cold circulating water tank, and the chiller is mounted on the top of the hot and cold circulating water tank. The upper side of the hot and cold circulating water tank and the output end connected to the chiller are connected to a cold water pump pipe. The water delivery end of the cold water pump pipe passes through the thermostatic kettle and is connected to the circulating pump pipe on its inner wall. The lower side of the hot and cold circulating water tank is connected to a hot water pump pipe. The hot water pump pipe bends upward and connects to the water delivery end of the cold water pump pipe. The two are internally interconnected.

[0010] To further explain, the addition tubes on the double-bladder reaction vessel are symmetrically distributed at the top according to the two chambers inside.

[0011] To further explain, the stirring assembly of the dual-tank reactor includes a second motor, gears, and mixing paddles. The top of the dual-tank reactor is equipped with a cover frame, on which the second motor is mounted. The output shaft of the second motor passes through the upper part of the inner chamber of one of the dual-tank reactors. Two meshing gears are rotatably arranged on both sides of the top of the dual-tank reactor, one of which is connected to the output shaft of the first motor. Mixing paddles are rotatably arranged in both chambers of the dual-tank reactor, and the upper ends of the two mixing paddles are connected to the corresponding gears.

[0012] To further explain, it also includes collection boxes and connecting pipes. Collection boxes are installed on both sides of the support. The upper part of the two collection boxes near each other is connected to the end of the adjacent output pipe, and the lower part of the two collection boxes far apart is connected to the connecting pipe.

[0013] To further explain, it also includes a temperature and pressure detector and a recorder. The temperature and pressure detector is installed on the upper right side of the constant temperature vessel, and the detection end of the temperature and pressure detector extends into the inner wall of the settling vessel. A recorder is installed at the lower part of the temperature and pressure detector.

[0014] To further explain, it also includes an extraction tank, a concentration analyzer, and an electric valve. The extraction tank is located on the left side of the hot and cold circulating water tank at the top front of the support. The end of the connecting pipe of the extraction tank is connected to the three-way valve above it, and the concentration analyzer is installed at the bottom of the extraction tank. The concentration analyzer works in conjunction with the extraction tank, and an electric valve is installed at the top of the connecting pipe of the extraction tank.

[0015] To further explain, it also includes a controller, which is embedded on the front side of the support and can operate and monitor the various electric drive components.

[0016] The beneficial effects are as follows: 1. This utility model ensures that pretreatment under two different conditions can be carried out simultaneously by driving the gear and mixing paddle with a motor, thereby improving the speed and efficiency of raw material preparation; the connection between the double-tank reaction cylinder and the melting tank ensures that the material can flow into the settling tank continuously and stably, thus realizing continuous material supply.

[0017] 2. The design of connecting the circulating pump pipe to the hot and cold circulating water tank ensures the uniformity and stability of the internal temperature of the settling vessel; and the coordinated work of the constant temperature vessel and the hot and cold circulating water tank realizes the precise control of the reaction environment, providing stable conditions for continuous production.

[0018] 3. This utility model significantly improves the efficiency of solid-liquid separation and reduces impurity residue through the design of the layered extraction tube, suction pump tube and centrifugal filter cartridge.

[0019] 4. This utility model achieves automated and intelligent management of the system through the combined action of components such as the controller and temperature and pressure detector, reducing the need for manual intervention and improving the safety and reliability of operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall assembly structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of the thermostatic kettle, motor, and centrifugal filter cartridge of this utility model.

[0022] Figure 3 This is a top view of the thermostatic kettle and hot and cold circulating water tank of this utility model after they have been cut open.

[0023] Figure 4 This is a side view of the thermostatic reactor and double-tank reaction vessel of this utility model, showing the interior from another perspective after they have been cut open.

[0024] Figure 5 This is a side view of the thermostatic reactor and settling reactor of this utility model, showing their interiors from another perspective after being cut open.

[0025] Figure 6 This is an exploded view of the components of this utility model, including the thermostatic reactor, settling reactor, and circulation pipe.

[0026] Figure 7 This is a front view schematic diagram of the centrifugal filter cartridge 1, centrifugal filter cartridge 2, and collection box of this utility model.

[0027] Figure 8 This is a rear view schematic diagram of the components of this utility model, including the support, hot and cold circulating water tank, and fusion tank.

[0028] Figure 9 This is a rear view schematic diagram of the components of this utility model, including the double-bladder reaction cylinder, motor II, and melting box.

[0029] Figure 10 This is a front-view schematic diagram of the components of this utility model, including the hot and cold circulating water tank, the chiller, and the circulating pump pipe.

[0030] The markings in the attached diagram are as follows: 1: Support; 100: Controller; 2: Thermostatic vessel; 21: Settling vessel; 22: Fluid transfer pump pipe; 3: Motor 1; 31: Stirring paddle; 4: Centrifugal filter cartridge 1; 5: Centrifugal filter cartridge 2; 51: Suction pump pipe; 52: Layered extraction pipe; 6: Hot and cold circulating water tank; 61: Heater; 62: Refrigerator; 63: Cold water pump pipe; 64: Hot water pump pipe; 65: Circulation pump pipe; 7: Double-tank reaction vessel; 71: Motor 2; 72: Gear; 73: Mixing paddle; 74: Three-way valve; 8: Fusion tank; 81: Delivery pipe; 9: Addition pipe; 10: Output pipe; 101: Solid transfer pump; 11: Collection tank; 12: Connecting pipe; 13: Temperature and pressure detector; 14: Recorder; 15: Extraction tank; 16: Concentration analyzer; 17: Electric valve. Detailed Implementation

[0031] 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.

[0032] Example: A continuous precipitation reactor for cerium carbonate, such as Figures 1-10As shown, the apparatus includes a support 1, which serves as the supporting structure for the entire device. A thermostatic vessel 2 is mounted at the center of the top of the support 1. The thermostatic vessel 2 provides a controlled temperature environment to ensure the internal reaction proceeds within a set temperature range. A settling vessel 21 is installed inside the thermostatic vessel 2. The settling vessel 21 is the main site for the cerium carbonate precipitation reaction and is designed to contain the reaction liquid. Internal stirring and external temperature control promote precipitate formation. The outer wall of the settling vessel 21 is separated from the thermostatic vessel 2. A fluid transfer pump pipe 22 connects the bottoms of the settling vessel 21 and the thermostatic vessel 2, and is responsible for transporting and transferring the precipitate. A motor 3 is mounted on the top of the settling vessel 21. The output shaft of the motor 3 extends into the settling vessel 21, and the output shaft of the motor 3 passes through… The settling vessel 21 is equipped with a stirring paddle 31. Motor 3 drives the stirring paddle 31 to rotate, providing mechanical energy to mix the reaction liquid, ensuring uniform distribution of reactants and improving reaction efficiency. Centrifugal filter cartridge 4 and centrifugal filter cartridge 5 are fixed to the top two sides of the support 1, respectively. Centrifugal filter cartridge 4 uses centrifugal force to separate solid-liquid mixtures, mainly used to process the precipitate drawn from the bottom of the settling vessel 21, further achieving solid-liquid separation. Centrifugal filter cartridge 5 is similar to centrifugal filter cartridge 4, but incorporates some components to extract the clear liquid in layers, reducing interference with the formed precipitate and enhancing the separation effect. The transmission end of the fluid transfer pump pipe 22 is connected to the upper end of centrifugal filter cartridge 4, and the top of centrifugal filter cartridge 25 is connected to a suction assembly. The extraction end of the suction assembly penetrates the upper part of the constant temperature vessel 2 and connects to the settling vessel 2. The upper left side of the support 1 is connected, and the suction assembly surrounds the inside of the settling vessel 21. A hot and cold circulating water tank 6 is installed on the front side of the top of the support 1. The hot and cold circulating water tank 6 is used to adjust the temperature of the medium in the tank and to transport the liquid at the appropriate temperature to the constant temperature vessel 2 through hot and cold circulation to maintain the temperature stability inside the settling vessel 21. The hot and cold circulating water tank 6 is equipped with a pipeline assembly, which is connected to the front side of the upper part of the constant temperature vessel 2. A circulation pump pipe 65 is installed in the gap between the settling vessel 21 and the constant temperature vessel 2. The flow end of the circulation pump pipe 65 is connected to the pipeline assembly. A double-tank reaction cylinder 7 is installed on the rear side of the top of the support 1. The double-tank reaction cylinder 7 is equipped with a stirring assembly. A three-way valve 74 is connected to the bottom of the double-tank reaction cylinder 7. A melting tank 8 is installed on the rear side of the top of the support 1. The settling tank 21 is used to receive pretreated raw material liquid and add necessary precipitant, so that the raw material liquid can be mixed with the precipitant and then enter the settling tank 21. The upper side of the melting tank 8 is connected to a three-way valve 74, and the other side of the upper part of the melting tank 8 is connected to a conveying pipe 81. The upper end of the conveying pipe 81 passes through the constant temperature vessel 2 and is connected to the upper rear side of the settling tank 21. The upper parts of the centrifugal filter cartridge 4, centrifugal filter cartridge 5, hot and cold circulating water tank 6, and double-tank reaction vessel 7 are all connected to the addition pipe 9. The addition pipe 9 provides an inlet so that various reactants, solvents or additives can be added to each reaction vessel. The addition pipe 9 on the double-tank reaction vessel 7 is symmetrically distributed at the upper part according to the two inner tanks. The bottom of the centrifugal filter cartridge 4 and centrifugal filter cartridge 5 are both connected to the outward-extending output pipe 10.Furthermore, both centrifugal filter cartridge 4 and centrifugal filter cartridge 5 are connected to a solid transfer pump 101 on one side of their bottom. The solid transfer pump 101 is specifically used to transport solid particles or high-concentration slurries, discharging the separated solid material from centrifugal filter cartridge 4 or centrifugal filter cartridge 5.

[0033] like Figures 1-3 and Figures 5-7 As shown, the suction assembly on the centrifuge filter cartridge 2 5 includes a suction pump pipe 51 and a stratification extraction pipe 52. The top of the centrifuge filter cartridge 2 5 is connected to the suction pump pipe 51. The extraction end of the suction pump pipe 51 passes through the upper part of the constant temperature vessel 2 and is connected to the upper left side of the settling vessel 21. The settling vessel 21 is equipped with a stratification extraction pipe 52 for extracting liquid phase separation. The upper end of the stratification extraction pipe 52 is connected to the extraction end of the suction pump pipe 51. The stratification extraction pipe 52 is arranged in a semi-circular ring wall shape on the front side inside the settling vessel 21. The stratification extraction pipe 52 is equipped with at least three extraction pipes at different horizontal heights, and the extraction ends of the extraction pipes are all bent downwards. The suction pump pipe 51 is responsible for extracting the supernatant in the settling vessel 21, while the stratification extraction pipe 52 extracts liquids of different density levels according to different heights, realizing fine stratification extraction.

[0034] like Figures 2-4 , Figure 8 and Figure 10 As shown, the piping assembly on the hot and cold circulating water tank 6 includes a heater 61, a cooler 62, a cold water pump pipe 63, and a hot water pump pipe 64. The heater 61 is installed in the lower part of the hot and cold circulating water tank 6. The heater 61 is responsible for heating the liquid in the tank to the required temperature, raising the temperature of the medium (usually water or antifreeze) through electric heating or other heating methods to provide a heat source for the system. The cooler 62 is mounted on the top of the hot and cold circulating water tank 6. The cooler 62 is used to cool the liquid in the hot and cold circulating water tank 6. The cooler 62 can be a compressor refrigeration unit, thermoelectric refrigeration module, etc. It can lower the temperature of the medium to provide a cold source for the system. A cold water pump pipe 63 is connected to the upper side of the hot and cold circulating water tank 6 and to the output end of the cooler 62. The water supply end of 3 passes through the thermostatic vessel 2 and is connected to the circulation pump pipe 65 on its inner wall. The cold water pump pipe 63 draws low-temperature liquid cooled by the refrigerator 62 from the hot and cold circulating water tank 6 and delivers it to the circulation pump pipe 65 in the thermostatic vessel 2. The lower side of the hot and cold circulating water tank 6 is connected to the hot water pump pipe 64. The hot water pump pipe 64 bends upward and connects to the water supply end of the cold water pump pipe 63. The hot water pump pipe 64 delivers the high-temperature liquid heated by the heater 61 to the thermostatic vessel 2, where it mixes with the low-temperature liquid in the cold water pump pipe 63 or flows separately to regulate the temperature around the settling vessel 21. The mutual flow between the hot water pump pipe 64 and the cold water pump pipe 63 allows for flexible adjustment of the liquid temperature supplied to the thermostatic vessel 2 as needed, thereby precisely controlling the reaction temperature inside the settling vessel 21.

[0035] likeFigure 2 , Figure 4 and Figures 8-9 As shown, the stirring assembly of the double-tank reactor 7 includes a second motor 71, a gear 72, and a mixing paddle 73. The top of the double-tank reactor 7 is equipped with a cover frame, on which the second motor 71 is mounted. The second motor 71 serves as a power source, providing rotational power. The output shaft of the second motor 71 passes through the upper inner part of one of the tanks of the double-tank reactor 7. Two meshing gears 72 are rotatably arranged on both sides of the top of the double-tank reactor 7. One of the gears 72 is connected to the output shaft of the first motor 3. A mixing paddle 73 is rotatably arranged in both tanks of the double-tank reactor 7, and the upper ends of the two mixing paddles 73 are connected to the interior of the corresponding gear 72. When the gear 72 rotates, it will drive the mixing paddle 73 connected to it to rotate together, thereby effectively mixing the materials in their respective tanks.

[0036] like Figure 1 and Figure 7 As shown, it also includes a collection tank 11 and a connecting pipe 12. Collection tanks 11 are installed on both sides of the support 1. The collection tanks 11 are used to collect and store the liquid discharged from the output pipe 10 for subsequent treatment or recycling. The upper part of the two collection tanks 11 near the same end is connected to the end of the adjacent output pipe 10, and the lower part of the two collection tanks 11 far from each other is connected to the connecting pipe 12. The connecting pipe 12 is used to connect the collection tanks 11 to other processing units or waste liquid treatment systems to facilitate the transfer of liquid.

[0037] like Figure 6 As shown, it also includes a temperature and pressure detector 13 and a recorder 14. The temperature and pressure detector 13 is installed on the upper right side of the constant temperature vessel 2. The detection end of the temperature and pressure detector 13 extends into the inner wall of the settling vessel 21. The temperature and pressure detector 13 can monitor the temperature and pressure inside the settling vessel 21 to ensure that the reaction conditions are within a safe and ideal range. The recorder 14 is set at the lower part of the temperature and pressure detector 13. The recorder 14 can record the data provided by the temperature and pressure detector 13 for process monitoring and quality traceability.

[0038] like Figures 8-9 As shown, it also includes an extraction tank 15, a concentration analyzer 16, and an electric valve 17. The extraction tank 15 is located on the left side of the hot and cold circulating water tank 6 on the top front side of the support 1. The extraction tank 15 is used to temporarily store the solution sample to be analyzed for concentration analysis. The end of the connecting pipe of the extraction tank 15 is connected to the three-way valve 74 above, and the concentration analyzer 16 is installed at the bottom of the extraction tank 15. The concentration analyzer 16 is used to analyze the concentration of the solution in the extraction tank 15 to ensure that the product quality meets the standards. The concentration analyzer 16 works in conjunction with the extraction tank 15. An electric valve 17 is installed on the upper part of the connecting pipe of the extraction tank 15. The electric valve 17 is used to control the flow path of the solution, opening or closing it as needed to allow the solution to flow into the extraction tank 15 for analysis.

[0039] like Figure 1 As shown, it also includes a controller 100. The controller 100, which can control and monitor each electric drive component, is embedded on the front side of the support 1. As the core of the integrated control system, the controller 100 manages the operation of all electric drive components, receives signal data, and adjusts the operating parameters according to a predetermined program to ensure the consistency and reliability of the system operation.

[0040] First, the raw material solution (a solution containing cerium ions) enters the double-tank reaction vessel 7 through the addition pipe 9. Motor 2 71 drives gear 72 and mixing paddle 73 to rotate, thoroughly stirring the raw material solution and ensuring that pretreatment under two different conditions can proceed simultaneously. Depending on the required reaction temperature, heater 61 or cooler 62 is activated to adjust the temperature in the hot and cold circulating water tank 6. Cold water pump pipe 63 and hot water pump pipe 64 deliver liquid at the appropriate temperature to the constant temperature vessel 2, maintaining a stable temperature inside the settling vessel 21. This process is controlled by controller 100 to ensure the temperature remains within the optimal reaction range. The pretreated raw material solution is introduced into the dissolving tank 8 through the three-way valve 74, where it is mixed with the necessary precipitant. The mixed solution enters the settling vessel 21 through the bent delivery pipe 81. Inside the settling vessel 21, the stirring paddle 31 driven by motor 3 evenly distributes the reactants, promoting the precipitation of cerium carbonate. At this time, the constant temperature vessel 2 is connected to the hot and cold circulating water tank 6 through the circulating pump pipe 65 surrounding it. To ensure a constant temperature inside the settling tank 21, after sedimentation, the solid particles settle to the bottom of the settling tank 21. The suction pump pipe 51 and the stratified extraction pipe 52 work together. The stratified extraction pipe 52 extracts the supernatant according to different density layers to reduce interference with the formed precipitate. The ends of these extraction pipes are all bent downwards to ensure that the upper liquid can be effectively collected without disturbing the precipitate. The supernatant extracted by the stratified extraction pipe 52 is transported by the suction pump pipe 51 to the centrifugal filter cartridge 2 5 for further solid-liquid separation. The centrifugal filter cartridge 2 5 uses the centrifugal force generated by high-speed rotation to accelerate solid-liquid separation and improve efficiency. The fluid transfer pump pipe 22 transfers the cerium carbonate precipitate at the bottom of the settling tank 21 to the centrifugal filter cartridge 1 4, thereby further separating the precipitate from the solid. The centrifugal filter cartridge 1 4 uses centrifugal force to separate a purer solid cerium carbonate precipitate through high-speed rotation. The remaining liquid is discharged into the collection box 11 through the output pipe 10, and the pure solid cerium carbonate precipitate is output by the solid transfer pump 101.

[0041] When it is necessary to analyze the concentration of a specific batch of products, the electric valve 17 is opened, allowing some solution to flow into the extraction tank 15. The concentration analyzer 16 then analyzes the batch of solution to confirm whether the product quality meets the standards. Meanwhile, the temperature and pressure detector 13 installed on the thermostatic vessel 2 monitors the temperature and pressure inside the settling vessel 21 in real time and transmits the data to the recorder 14 for storage, providing a basis for subsequent quality traceability. The controller 100 located on the front side of the support 1 is responsible for the unified management and control of the entire system operation. It not only controls the working status of electrically driven components such as motors and pumps, but also receives data feedback from various sensors, such as temperature, pressure, and concentration information, in order to dynamically adjust the reaction conditions and ensure the continuity of production and the consistency of product quality.

[0042] Although this disclosure has been described with respect to only a limited number of embodiments, those skilled in the art who benefit from this disclosure will understand that various other embodiments can be devised without departing from the scope of this invention. Therefore, the scope of this invention should be limited only by the appended claims.

Claims

1. A continuous precipitation reactor for cerium carbonate, characterized in that, The system includes a support (1), a thermostatic vessel (2) mounted at the center of the top of the support (1), a settling vessel (21) inside the thermostatic vessel (2), a gap between the outer wall of the settling vessel (21) and the thermostatic vessel (2), a fluid transfer pump pipe (22) connecting the bottom of the settling vessel (21) and the thermostatic vessel (2), a motor (3) mounted on the top of the settling vessel (21), the output shaft of the motor (3) extending into the settling vessel (21) and equipped with a stirring paddle (31), and centrifugal filters fixed on both sides of the top of the support (1). The transmission end of the fluid transfer pump pipe (22) of the first centrifugal filter (4) and the second centrifugal filter (5) is connected to the upper end of the first centrifugal filter (4). The top of the second centrifugal filter (5) is connected to a suction assembly. The extraction end of the suction assembly passes through the upper part of the constant temperature vessel (2) and is connected to the upper left side of the settling vessel (21). The suction assembly surrounds the inside of the settling vessel (21). A hot and cold circulating water tank (6) is installed on the front side of the top of the support (1). A pipeline assembly is provided on the hot and cold circulating water tank (6). The pipeline assembly of the hot and cold circulating water tank (6) is connected to the constant temperature vessel. The upper front of the vessel (2) is connected, and a circulation pump pipe (65) is installed in the gap between the settling vessel (21) and the constant temperature vessel (2). The flow end of the circulation pump pipe (65) is connected to the pipeline assembly. A double-tank reaction cylinder (7) is installed on the rear side of the top of the support (1). A stirring assembly is installed inside the double-tank reaction cylinder (7). A three-way valve (74) is connected to the bottom of the double-tank reaction cylinder (7). A melting tank (8) is installed on the rear side of the top of the support (1). One side of the upper part of the melting tank (8) is connected to the three-way valve (74). The upper part of the melting tank (8) is connected to another part of the melting tank (8). A conveying pipe (81) is connected to one side. The upper end of the conveying pipe (81) passes through the thermostatic kettle (2) and is connected to the upper rear side of the settling kettle (21). The upper parts of the centrifugal filter cartridge 1 (4), centrifugal filter cartridge 2 (5), hot and cold circulating water tank (6), and double-tank reaction cylinder (7) are all connected to the addition pipe (9). The bottom of centrifugal filter cartridge 1 (4) and centrifugal filter cartridge 2 (5) are all connected to the output pipe (10) extending to the outside. The bottom side of centrifugal filter cartridge 1 (4) and centrifugal filter cartridge 2 (5) is connected to a solid transfer pump (101).

2. The cerium carbonate continuous precipitation reactor according to claim 1, characterized in that, The suction assembly on the centrifugal filter cartridge 2 (5) includes a suction pump pipe (51) and a stratified extraction pipe (52). The top of the centrifugal filter cartridge 2 (5) is connected to the suction pump pipe (51). The extraction end of the suction pump pipe (51) passes through the upper part of the constant temperature vessel (2) and is connected to the upper left side of the settling vessel (21). The settling vessel (21) is equipped with a stratified extraction pipe (52) for extracting liquid phase separations. The upper end of the stratified extraction pipe (52) is connected to the extraction end of the suction pump pipe (51). The stratified extraction pipe (52) is in the shape of a semi-circular ring wall and is located on the front side inside the settling vessel (21). The stratified extraction pipe (52) is equipped with at least three extraction pipes at different horizontal heights, and the extraction ends of the extraction pipes are all bent downwards.

3. The cerium carbonate continuous precipitation reactor according to claim 2, characterized in that, The piping assembly on the hot and cold circulating water tank (6) includes a heater (61), a cooler (62), a cold water pump pipe (63), and a hot water pump pipe (64). The heater (61) is installed in the lower part of the hot and cold circulating water tank (6), and the cooler (62) is installed on the top of the hot and cold circulating water tank (6). The cold water pump pipe (63) is connected to the upper side of the hot and cold circulating water tank (6) and the output end connected to the cooler (62). The water delivery end of the cold water pump pipe (63) passes through the thermostatic kettle (2) and is connected to the circulating pump pipe (65) on its inner wall. The hot water pump pipe (64) is connected to the lower side of the hot and cold circulating water tank (6). The hot water pump pipe (64) bends upward and is connected to the water delivery end of the cold water pump pipe (63). The two are internally interconnected.

4. The cerium carbonate continuous precipitation reactor according to claim 3, characterized in that, The addition tube (9) on the double-bladder reaction cylinder (7) is symmetrically distributed at the top according to the two bladders inside.

5. A continuous cerium carbonate precipitation reactor according to claim 4, characterized in that, The stirring assembly of the double-tank reactor (7) includes a second motor (71), a gear (72) and a mixing paddle (73). The top of the double-tank reactor (7) is provided with a cover frame, on which the second motor (71) is installed. The output shaft of the second motor (71) passes through the upper part of one of the tanks of the double-tank reactor (7). Two meshing gears (72) are rotatably arranged on both sides of the top of the double-tank reactor (7). One of the gears (72) is connected to the output shaft of the first motor (3). A mixing paddle (73) is rotatably arranged in both tanks of the double-tank reactor (7), and the upper ends of the two mixing paddles (73) are connected to the inside of the corresponding gears (72).

6. A continuous cerium carbonate precipitation reactor according to claim 5, characterized in that, It also includes a collection box (11) and a connecting pipe (12). The support (1) is equipped with collection boxes (11) on both sides. The upper part of the two collection boxes (11) near the same end is connected to the end of the adjacent output pipe (10), and the lower part of the two collection boxes (11) far apart is connected to the connecting pipe (12).

7. A continuous cerium carbonate precipitation reactor according to claim 6, characterized in that, It also includes a temperature and pressure detector (13) and a recorder (14). The temperature and pressure detector (13) is installed on the upper right side of the thermostatic vessel (2). The detection end of the temperature and pressure detector (13) extends into the inner wall of the settling vessel (21). The recorder (14) is installed at the lower part of the temperature and pressure detector (13).

8. A continuous cerium carbonate precipitation reactor according to claim 7, characterized in that, It also includes an extraction tank (15), a concentration analyzer (16) and an electric valve (17). The extraction tank (15) is located on the left side of the hot and cold circulating water tank (6) on the front side of the top of the support (1). The end of the connecting pipe of the extraction tank (15) is connected to the three-way valve (74) above. The concentration analyzer (16) is installed at the bottom of the extraction tank (15). The concentration analyzer (16) works in conjunction with the extraction tank (15). An electric valve (17) is installed on the upper part of the connecting pipe of the extraction tank (15).

9. A continuous cerium carbonate precipitation reactor according to claim 8, characterized in that, It also includes a controller (100), which is embedded on the front side of the support (1) and is capable of controlling and monitoring the various electric drive components.

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