Device and process for acidifying, alkalizing, removing impurities and purifying high-purity nano zirconium oxide powder

Abstract

The invention relates to the technical field of oxide purification, in particular to a high-purity nano zirconium oxide powder acidification, alkalization, impurity removal and purification device and process, the device comprises a circulation tank, a purification tank is arranged on the circulation tank through a support, a partition plate is arranged in the circulation tank, and the interior of the circulation tank is divided into a first circulation cavity and a second circulation cavity by the partition plate; a [-shaped water inlet pipe and a [-shaped water outlet pipe are respectively arranged at two ends of the circulating tank in a sliding and penetrating manner; a circulating mixer is arranged in the circulating tank; acid (such as hydrochloric acid, nitric acid or sulfuric acid) and zirconium oxide can be fully stirred and mixed through the rotating stirring fan blades, so that zirconium oxide is dissolved in the acid (such as hydrochloric acid, nitric acid or sulfuric acid) to form a solution, and most of metal impurities are removed.

Description

Technical Field

[0001] The present application relates to the technical field of oxide purification, and in particular to a device and process for acidification, alkalization, impurity removal and purification of high-purity nano zirconium oxide powder. Background Art

[0002] Nano zirconia powder is an ultrafine powder composed of zirconium oxide (ZrO2) with a particle size at the nanometer level, usually between 1 and 100 nanometers. Due to its extremely small size, this material exhibits unique physical and chemical properties, such as enhanced mechanical strength, improved optical properties and higher specific surface area. These properties make nano zirconia powder have a wide range of application value in the manufacture of high-performance ceramics, catalyst carriers, biomedical implants, optical coatings and other fields.

[0003] However, preparing high-purity nano-zirconia powder is a technical challenge because the raw materials usually contain a variety of impurities, the presence of which can significantly affect the performance of the final product.

[0004] Traditional methods for preparing zirconium oxide powder include solid phase method, liquid phase method and gas phase method, but these methods are often difficult to effectively remove impurities. For example, a dehydration, distillation and purification device for methylbenzotriazole acidified liquid oil phase with publication number CN115487766A relates to the technical field of methylbenzotriazole processing. The prior art includes a reactor body, a box body is fixedly connected to the top of the reactor body, a motor is fixedly connected to the top of the box body, and one end of the motor output shaft passes through the inside of the box body. The prior art arranges a slider on the outer wall of the rotating plate, a slide groove is arranged on the outer wall of the first movable plate, a second movable plate is arranged on the outer wall of the first movable plate, a rack is arranged on the outer wall of the second movable plate, a gear is arranged on the outer wall of the driven shaft, a slide rod is arranged at the bottom end of the driven shaft, a sliding sleeve is arranged on the outer wall of the slide rod, a first rotating rod is arranged on the outer wall of the disc, a rotating block is arranged on the outer wall of the second rotating rod, and a second magnet is arranged on one side of the first magnet, so that the stirring rod can slide inside the stirring sleeve.

[0005] However, the above-mentioned prior art still has some defects when purifying zirconium oxide: 1. In the above-mentioned prior art, when the third magnet approaches the first magnet, the two attract each other, causing the stirring block to move toward the direction of the first magnet; and when the third magnet approaches the second magnet, due to mutual repulsion, the stirring block will move in the opposite direction. In actual use, magnetic stirring is usually suitable for smaller-scale reactors or laboratory-scale devices. In large-scale industrial applications, due to the limitations of stirring intensity and stirring range, it is impossible to achieve an ideal stirring effect.

[0006] 2. Although the above prior art reduces the direct wear of the stirring components through the interaction of magnets, the magnets themselves may be demagnetized or worn due to long-term use, affecting the stirring effect. At the same time, since the circulating water system of the water pipe body and the inner coil will effectively cool the reaction kettle to maintain an appropriate reaction temperature, the temperature of the magnets will constantly change. As the temperature rises, the atoms and electrons inside the magnets will be excited by thermal energy, increasing their thermal motion, thus making the direction of the magnetic moment unstable, and the magnetism of the magnets will gradually decrease, resulting in weakened magnetism and ultimately losing magnetism.

[0007] Based on this, under the statement of the above viewpoints, there is still room for improvement in the prior art's method of purifying zirconia. Summary of the Invention

[0008] In order to solve the above technical problems, the present application provides a device and process for purifying high-purity nano-zirconia powder by acidification and alkalization for impurity removal, adopting the following technical solutions: In the first aspect, a device for purifying high-purity nano-zirconia powder by acidification and alkalization for impurity removal includes a circulation tank. A purification tank is provided on the circulation tank through a bracket. An inlet pipe is provided on one side of the purification tank. The two ends of the circulation tank are respectively slidably penetrated by a U-shaped inlet water pipe and a U-shaped outlet water pipe. The U-shaped inlet water pipe and the U-shaped outlet water pipe are respectively communicated with the purification tank. A partition plate is arranged inside the circulation tank. The circulation tank is divided into a first circulation chamber and a second circulation chamber by the partition plate. A circulation mixer for disturbing and transporting the zirconia solution is arranged inside the circulation tank. The circulation mixer includes a spoiler plate slidably arranged in the first circulation chamber and connected to the U-shaped inlet water pipe, and a circulation plate slidably arranged in the second circulation chamber and connected to the U-shaped outlet water pipe. A number of spoiler holes are opened on the spoiler plate, and a number of connection holes are opened on both the partition plate and the circulation plate.

[0009] Preferably, the circulation mixer includes a sealing plug slidably arranged in the connection hole. A water-blocking spring is arranged between one end of the sealing plug背离 the spoiler plate and the connection hole. At least one water inlet groove is opened at one end of the connection hole背离 the spoiler plate. A water inlet hole located in the second circulation chamber is opened on one side of the U-shaped outlet water pipe.

[0010] Preferably, a blocking partition is arranged inside the purification tank. The blocking partition divides the purification tank into a mixing chamber and a purification chamber. The inlet pipe is communicated with the mixing chamber. One end of the U-shaped inlet water pipe slidably penetrates into the mixing chamber. One end of the U-shaped outlet water pipe slidably penetrates into the purification chamber. A driving shaft connected to the U-shaped inlet water pipe and the U-shaped outlet water pipe slidably penetrates through the blocking partition.

[0011] Preferably, an evaporation dryer is arranged inside the purification chamber. The evaporation dryer includes a scraper slidably arranged in the purification cavity and connected to one end of a U-shaped water outlet pipe. A plurality of spray nozzles are arranged at one end of the U-shaped water outlet pipe, and a number of one-way valves are arranged on the scraper.

[0012] Preferably, a discharge frame is arranged on the purification tank at the lower end of the purification cavity. A detachable draw bin is slidably arranged in the discharge frame, and the scraper abuts against the inner wall of the draw bin.

[0013] Preferably, a mixing filter is arranged in the mixing cavity; The mixing filter includes a plurality of transmission shafts rotatably arranged in the mixing cavity. A number of stirring fan blades are arranged on the transmission shafts.

[0014] Preferably, a filter collar is arranged in the purification cavity, and a number of filter holes are formed in the filter collar.

[0015] Preferably, a steam driving member is arranged in the mixing cavity; The steam driving member includes a sealing cover arranged at one end of the purification tank. One end of the transmission shaft rotatably penetrates into the purification cavity and is provided with an air inlet hole. One end of the transmission shaft rotatably penetrates into the sealing cover, and a plurality of arc-shaped nozzles are circumferentially arranged on the transmission shaft inside the sealing cover.

[0016] Preferably, a reciprocating spiral groove is formed on the driving shaft. A driving gear is rotatably arranged on the baffle plate in the purification cavity and is in threaded connection with the reciprocating spiral groove. A transmission gear meshing with the driving gear is arranged on the transmission shaft.

[0017] Second, a building compressive strength detection method, whose use process includes the following steps: S1: Purification preparation. First, the zirconia dissolved by acid enters the mixing cavity through the feed pipe, and then the driving shaft is driven to move reciprocally, driving the U-shaped water inlet pipe and the U-shaped water outlet pipe to move reciprocally together; S2: Acidification mixing. The mixing filter mixes the acid and zirconia, dissolving the zirconia into the acid to form a solution to remove most metal impurities, and filtering the zirconia solution to remove insoluble impurities; S3: Alkali neutralization. The zirconia solution enters the first circulation cavity through the U-shaped water inlet pipe, and the feeding pipe puts alkali into the first circulation cavity for neutralization to adjust the pH value of the solution; S4: Mixing reaction. The circulation mixer disturbs the zirconia solution to mix it with the alkali, causing the zirconia to precipitate in the form of a precipitate; S5: Drying and solidifying. The alkali-neutralized zirconia solution is transported into the purification cavity. The evaporation dryer evaporates the water in the zirconia solution to obtain dry powder, and then the dry powder is taken out for calcination treatment to improve its crystallinity and purity; S6: Steam drive; the steam drive component is powered by the steam generated by evaporation in the purification chamber, and at the same time heats the circulation tank to increase the reaction rate between the acid and zirconia.

[0018] In summary, the present application includes at least one of the following beneficial technical effects: 1. In the present invention, the rotating stirring fan blades fully stir and mix the acid (such as hydrochloric acid, nitric acid or sulfuric acid) and zirconia, so that zirconia dissolves in the acid (such as hydrochloric acid, nitric acid or sulfuric acid) to form a solution to remove most of the metal impurities. At this time, due to the vacuum pumping effect of the movement of the circulation plate, the pressure in the first circulation chamber will be less than that in the inner mixing chamber, and the zirconia solution in the mixing chamber will enter the U-shaped water inlet pipe under the action of the pressure difference. During this process, the zirconia solution will pass through a number of filter holes opened on the filter collar, and the filter holes will filter the zirconia solution to remove insoluble impurities.

[0019] 2. The circulation mixer of the present invention conveys the alkalized and neutralized zirconia solution into the purification chamber, evaporates the water in the zirconia solution through the evaporation dryer provided in the purification chamber to obtain dry powder, and then takes out the dry powder for calcination treatment to improve its crystallinity and purity.

[0020] 3. The steam drive component of the present invention drives the drive to rotate through the steam generated by evaporation in the purification chamber, and at the same time heats the circulation tank to increase the reaction rate between the acid and zirconia, because the increase in temperature increases the kinetic energy of molecules, thereby increasing the collision frequency and reaction rate. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present invention.

[0022] Figure 2 is a cross-sectional view of the present invention.

[0023] Figure 3 is a cross-sectional view of the circulation tank of the present invention.

[0024] Figure 4 is a schematic structural diagram of the partition plate of the present invention.

[0025] Figure 5 is a cross-sectional view of the purification tank of the present invention.

[0026] Figure 6 is a schematic structural diagram of the mixing filter of the present invention.

[0027] Figure 7 is the present invention Figure 6 partial enlarged view at A in

[0028] Figure 8 is a schematic structural diagram of the steam drive component of the present invention.

[0029] Fig. 9 is the present invention Figure 8 Partial enlarged view at position B in the present invention

[0030] Description of reference numerals: 1, circulation tank; 11, partition plate; 12, first circulation chamber; 13, second circulation chamber; 2, purification tank; 21, baffle plate; 22, mixing chamber; 23, purification chamber; 24, feed pipe; 3, U-shaped water inlet pipe; 4, U-shaped water outlet pipe; 5, drive shaft; 6, circulation mixer; 61, spoiler; 62, spoiler hole; 63, circulation plate; 64, connection hole; 65, make-up pipe; 66, sealing plug; 67, water blocking spring; 68, water inlet groove; 69, water inlet hole; 7, evaporation dryer; 71, scraper; 72, spray head; 73, check valve; 74, discharge frame; 75, pull-out bin; 8, mixing filter; 81, drive shaft; 82, stirring fan blade; 83, filter collar; 84, filter hole; 9, steam drive member; 91, sealing cover; 92, air inlet hole; 93, arc-shaped nozzle; 94, reciprocating spiral groove; 95, drive gear; 96, transmission gear; 97, interlayer; 98, connecting pipe Detailed implementation manners

[0031] The following further elaborates on the present application Figures 1 to 9 in conjunction with the accompanying drawings

[0032] The embodiment of the present application discloses a device and process for acidifying, alkalizing, removing impurities, and purifying high-purity nano-zirconia powder. By dissolving zirconia raw materials in acid to remove most metal impurities, then adding alkali to the solution to adjust the pH value of the solution to the required range, so that zirconia precipitates in the form of a precipitate, and finally evaporating the moisture of the solution to leave dry zirconia powder particles of zirconia dry powder

[0033] Embodiment 1: Referring to Figure 1 and Figure 2 As shown, a device for acidifying, alkalizing, removing impurities, and purifying high-purity nano-zirconia powder includes a circulation tank 1. A purification tank 2 is arranged on the circulation tank 1 through a bracket. A partition plate 11 is arranged in the circulation tank 1. The circulation tank 1 is divided into a first circulation chamber 12 and a second circulation chamber 13 by the partition plate 11. A U-shaped water inlet pipe 3 and a U-shaped water outlet pipe 4 are respectively slidably penetrated through both ends of the circulation tank 1

[0034] A baffle plate 21 is arranged in the purification tank 2. The baffle plate 21 divides the purification tank 2 into a mixing chamber 22 and a purification chamber 23. One end of the U-shaped water inlet pipe 3 is slidably penetrated into the mixing chamber 22, and one end of the U-shaped water outlet pipe 4 is slidably penetrated into the purification chamber 23

[0035] When purifying nano-zirconia powder, first, the zirconia dissolved by an acid (such as hydrochloric acid, nitric acid, or sulfuric acid) is transported into the mixing chamber 22 through the feed pipe 24 provided on the purification tank 2. Then, by driving the drive shaft 5 slidably penetrating through the partition plate 21 to reciprocate, the reciprocating drive shaft 5 will drive the U-shaped water inlet pipe 3 and the U-shaped water outlet pipe 4 connected thereto to reciprocate together.

[0036] At this time, the mixing filter 8 provided in the mixing chamber 22 will start. The mixing filter 8 will fully stir and mix the acid (such as hydrochloric acid, nitric acid, or sulfuric acid) and zirconia, dissolve the zirconia into the acid (such as hydrochloric acid, nitric acid, or sulfuric acid) to form a solution to remove most metal impurities, and filter the zirconia solution to remove insoluble impurities.

[0037] Then it enters the first circulation chamber 12 from one end of the U-shaped water inlet pipe 3. During this process, the feeding pipe 65 provided on the circulation tank 1, through its connection with the first circulation chamber 12, feeds an alkali (such as sodium hydroxide or potassium hydroxide) into the first circulation chamber 12 for neutralization to adjust the pH value of the solution to the required range. At the same time, the circulation mixer 6 provided in the circulation tank 1 will agitate the zirconia solution to make it fully mix with the alkali (such as sodium hydroxide or potassium hydroxide), causing the zirconia to precipitate out in the form of a precipitate. The circulation mixer 6 is used to agitate and transport the zirconia solution.

[0038] After that, the circulation mixer 6 will transport the alkalized and neutralized zirconia solution into the purification chamber 23. The water in the zirconia solution is evaporated by the evaporation dryer 7 provided in the purification chamber 23 to obtain dry powder, and then the dry powder is taken out and subjected to calcination treatment to improve its crystallinity and purity.

[0039] Refer to Figure 2 、 Figure 3 and Figure 4 As shown in

[0040] Specifically, the circulation mixer 6 includes a spoiler plate 61 slidably arranged in the first circulation chamber 12 and connected to the U-shaped water inlet pipe 3, and a circulation plate 63 slidably arranged in the second circulation chamber 13 and connected to the U-shaped water outlet pipe 4. A number of connection holes 64 are provided on both the partition plate 11 and the circulation plate 63.

[0041] Meanwhile, the U-shaped water outlet pipe 4 drives the circulation plate 63 to reciprocate within the second circulation chamber 13. The circulation plate 63 moves synchronously with the spoiler plate 61. During the movement of the circulation plate 63, when the circulation plate 63 moves towards the side away from the partition plate 11, the sealing plug 66 slidably arranged in the connecting hole 64 on the circulation plate 63 blocks the connecting hole 64, creating a negative pressure between the circulation plate 63 and the partition plate 11.

[0042] The negative pressure formed between the circulation plate 63 and the partition plate 11 pulls the sealing plug 66 in the connecting hole 64 on the partition plate 11. Meanwhile, the spoiler plate 61 pushes the zirconia solution towards the partition plate 11, causing the sealing plug 66 in the connecting hole 64 on the partition plate 11 to compress the water-blocking spring 67 arranged between one end of the sealing plug 66 facing away from the spoiler plate 61 and the connecting hole 64. The movement of the sealing plug 66 opens at least one water inlet groove 68 opened at one end of the connecting hole 64 facing away from the spoiler plate 61. A part of the zirconia solution passes through the connecting hole 64 on the partition plate 11, through the water inlet groove 68, and then enters the second circulation chamber 13, while another part of the zirconia solution passes through the spoiler holes 62.

[0043] When the circulation plate 63 moves towards the partition plate 11, the water-blocking spring 67 on the partition plate 11 pushes the sealing plug 66 to block the connecting hole 64, preventing the zirconia solution in the second circulation chamber 13 from flowing back into the first circulation chamber 12. Meanwhile, the sealing plug 66 in the connecting hole 64 on the circulation plate 63 is pushed by the zirconia solution to compress the water-blocking spring 67, causing the sealing plug 66 to open the water inlet groove 68 on the circulation plate 63, allowing the zirconia solution to enter the side of the circulation plate 63 facing away from the partition plate 11.

[0044] When the circulation plate 63 moves towards the side away from the partition plate 11 again, the zirconia solution on the side of the circulation plate 63 facing away from the partition plate 11 is compressed by the circulation plate 63. It enters the purification chamber 23 through the water inlet hole 69 opened on one side of the U-shaped water outlet pipe 4 and located within the second circulation chamber 13, thereby realizing the transportation of the zirconia solution. Then, the water in the zirconia solution is evaporated by the evaporation dryer 7 arranged in the purification chamber 23 to obtain dry powder, and the dry powder is taken out and subjected to calcination treatment to improve its crystallinity and purity.

[0045] Refer to Figure 5 As shown, specifically, the evaporation dryer 7 includes a scraper 71 slidably arranged in the purification chamber 23 and connected to one end of the U-shaped water outlet pipe 4. Multiple nozzles 72 are arranged at one end of the U-shaped water outlet pipe 4.

[0046] When driving the drive shaft 5 to reciprocate and driving the U-shaped water inlet pipe 3 and the U-shaped water outlet pipe 4 to reciprocate together, the U-shaped water outlet pipe 4 drives the scraper 71 and the nozzles 72 to move together, and the inner wall of the purification chamber 23 generates high temperature by heating.

[0047] When the alkalized and neutralized zirconia solution enters the U-shaped outlet pipe 4, the zirconia solution will be ejected from the nozzle 72 to form fine droplets. During the reciprocating movement of the nozzle 72, the ejected zirconia solution will contact the inner wall of the high-temperature purification chamber 23. The water in the zirconia solution will be evaporated to generate steam, and the water is removed, leaving dry powder particles.

[0048] These powder particles converge into the discharge frame 74 provided on the purification tank 2 under the push of the scraper 71. The discharge frame 74 is located at the lower end of the purification chamber 23. The converging powder particles will fall into the draw-out bin 75 slidably arranged in the discharge frame 74. The scraper 71 abuts against the inside of the draw-out bin 75, and the scraper 71 will push the powder particles to one side of the draw-out bin 75. The powder particles are taken out of the discharge frame 74 through the detachable draw-out bin 75 to obtain zirconia dry powder, and then the dry powder is taken out and calcined to improve its crystallinity and purity.

[0049] The steam generated by evaporation in the purification chamber 23 will pass through a number of one-way valves 73 provided on the scraper 71, enter between the scraper 71 and the baffle 21, and then be discharged through the prior art under the push of the scraper 71.

[0050] Refer to Figure 6 、 Figure 7 and Figure 8 As shown in

[0051] Specifically, the mixing filter 8 includes a plurality of transmission shafts 81 rotatably arranged in the mixing chamber 22, and a filter collar 83 is arranged in the purification chamber 23.

[0052] During the purification of nano-zirconia powder, by driving the transmission shaft 81 to rotate, the rotating transmission shaft 81 will drive a number of stirring fan blades 82 arranged thereon to rotate together. The rotating stirring fan blades 82 will fully stir and mix the acid (such as hydrochloric acid, nitric acid or sulfuric acid) and zirconia, so that zirconia dissolves in the acid (such as hydrochloric acid, nitric acid or sulfuric acid) to form a solution to remove most metal impurities.

[0053] Example two: Refer to Figure 6 、 Figure 7 、 Figure 8 and Fig. 9As shown, on the basis of the first embodiment, a steam driving member 9 is provided in the mixing chamber 22, and the steam driving member 9 is driven to rotate by the steam generated by evaporation in the purification chamber 23, and heats the circulation tank 1 at the same time, thereby increasing the reaction rate of the acid and zirconium oxide, because the increase in temperature usually increases the kinetic energy of the molecules, thereby increasing the collision frequency and the reaction rate. At the same time, during the alkalization process of the zirconium oxide solution, heating can promote the formation of zirconium oxide precipitation, and the supersaturation of the solution can be increased by increasing the temperature, thereby promoting the formation of precipitation.

[0054] Specifically, the steam drive component 9 includes a sealing cover 91 arranged at one end of the purification tank 2, and an air inlet 92 is opened after one end of the transmission shaft 81 rotates and penetrates into the purification chamber 23, and one end of the transmission shaft 81 rotates and penetrates into the sealing cover 91, and a plurality of arc-shaped nozzles 93 located in the sealing cover 91 are circumferentially arranged on the transmission shaft 81.

[0055] When steam is generated by evaporation in the purification chamber 23, the steam will pass through the one-way valve 73 on the scraper 71, enter between the scraper 71 and the barrier plate 21, and then enter the air inlet 92 under the push of the scraper 71, and then be ejected into the sealing cover 91 through the arc-shaped nozzle 93 connected to the air inlet 92. When the arc-shaped nozzle 9 ejects steam, it will cause the transmission shaft 81 to rotate.

[0056] Among them, a reciprocating spiral groove 94 is opened on the driving shaft 5, and a driving gear 95 located in the purification chamber 23 and threadedly connected to the reciprocating spiral groove 94 is rotatably arranged on the baffle plate 21. The rotating transmission shaft 81 will drive the transmission gear 96 arranged on the transmission shaft 81 to rotate, and the rotating transmission gear 96 will drive the driving gear 95 to rotate by meshing with the driving gear 95. The rotating driving gear 95 will drive the driving shaft 5 to move spirally reciprocatingly on the baffle plate 21 through the threaded connection with the reciprocating spiral groove 94.

[0057] An interlayer 97 is provided in the circulation tank 1 , and a connecting pipe 98 communicating with the interlayer 97 is provided on the sealing cover 91 .

[0058] The steam entering the sealing cover 91 will enter the interlayer 97 through the connecting pipe 98, and the heat of the steam will heat the zirconium oxide solution in the circulation tank 1, increasing the supersaturation of the solution, thereby promoting the formation of precipitation. Then, the exhaust pipe connected to the interlayer 97 set on the circulation tank 1 will discharge the steam.

[0059] Finally, the present invention also provides a method for detecting the compressive strength of a building, and the method for using the method comprises the following steps: S1: Purification Preparation. When purifying nano-zirconia powder, first, the zirconia dissolved by an acid (such as hydrochloric acid, nitric acid, or sulfuric acid) is transported into the mixing chamber 22 through the feed pipe 24 provided on the purification tank 2. Then, by driving the drive shaft 5 slidably penetrating through the partition plate 21 to reciprocate, the reciprocating drive shaft 5 will drive the U-shaped water inlet pipe 3 and the U-shaped water outlet pipe 4 connected thereto to reciprocate together.

[0060] S2: Acidification Mixing. The mixing filter 8 will fully stir and mix the acid (such as hydrochloric acid, nitric acid, or sulfuric acid) and zirconia, dissolve the zirconia into the acid (such as hydrochloric acid, nitric acid, or sulfuric acid) to form a solution to remove most metal impurities, and filter the zirconia solution to remove insoluble impurities.

[0061] S3: Alkali Neutralization. Then, it enters the first circulation chamber 12 from one end of the U-shaped water inlet pipe 3. During this process, the feeding pipe 65 provided on the circulation tank 1 discharges an alkali (such as sodium hydroxide or potassium hydroxide) into the first circulation chamber 12 through communication with the first circulation chamber 12 for neutralization, and adjusts the pH value of the solution to the required range.

[0062] S4: Mixing Reaction. At the same time, the circulation mixer 6 provided in the circulation tank 1 will disturb the zirconia solution, making it fully mix with the alkali (such as sodium hydroxide or potassium hydroxide), so that the zirconia precipitates in the form of a precipitate. The circulation mixer 6 is used to disturb and transport the zirconia solution.

[0063] S5: Drying and Solidifying. After that, the circulation mixer 6 will transport the alkali-neutralized zirconia solution into the purification chamber 23. The water in the zirconia solution is evaporated by the evaporation dryer 7 provided in the purification chamber 23 to obtain dry powder, and then the dry powder is taken out and calcined to improve its crystallinity and purity.

[0064] S6: Steam Driving. The steam driving member 9 drives the drive to rotate through the steam generated by evaporation in the purification chamber 23, and at the same time heats the circulation tank 1 to increase the reaction rate of the acid and zirconia, because the increase in temperature usually increases the kinetic energy of molecules, thereby increasing the collision frequency and reaction rate.

[0065] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A high-purity nano-zirconia powder acidification and alkalization impurity removal and purification device, including a circulation tank (1), a purification tank (2) is arranged on the circulation tank (1) through a bracket, a feed pipe (24) is arranged on one side of the purification tank (2), both ends of the circulation tank (1) are respectively slidably penetrated by a U-shaped water inlet pipe (3) and a U-shaped water outlet pipe (4), and the U-shaped water inlet pipe (3) and the U-shaped water outlet pipe (4) are respectively communicated with the purification tank (2). It is characterized in that: A partition plate (11) is arranged in the circulation tank (1), the circulation tank (1) is separated into a first circulation chamber (12) and a second circulation chamber (13) by the partition plate (11), and a circulation mixer (6) for disturbing and transporting the zirconia solution is arranged in the circulation tank (1). The circulation mixer (6) includes a spoiler plate (61) slidably arranged in the first circulation chamber (12) and connected to the U-shaped water inlet pipe (3), a circulation plate (63) slidably arranged in the second circulation chamber (13) and connected to the U-shaped water outlet pipe (4), a plurality of spoiler holes (62) are opened on the spoiler plate (61), and a plurality of connection holes (64) are opened on both the partition plate (11) and the circulation plate (63).

2. A high-purity nano-zirconia powder acidification and alkalization impurity removal and purification device according to claim 1, It is characterized in that: The circulation mixer (6) includes a sealing plug (66) slidably arranged in the connection hole (64), a water-blocking spring (67) is arranged between one end of the sealing plug (66)背离 the spoiler plate (61) and the connection hole (64), at least one water inlet groove (68) is opened at one end of the connection hole (64)背离 the spoiler plate (61), and a water inlet hole (69) located in the second circulation chamber (13) is opened on one side of the U-shaped water outlet pipe (4).

3. A high-purity nano-zirconia powder acidification and alkalization impurity removal and purification device according to claim 1, It is characterized in that: A partition board (21) is arranged in the purification tank (2), the purification tank (2) is separated into a mixing chamber (22) and a purification chamber (23) by the partition board (21), the feed pipe (24) is communicated with the mixing chamber (22), one end of the U-shaped water inlet pipe (3) slidably penetrates into the mixing chamber (22), one end of the U-shaped water outlet pipe (4) slidably penetrates into the purification chamber (23), and a driving shaft (5) connected to the U-shaped water inlet pipe (3) and the U-shaped water outlet pipe (4) slidably penetrates through the partition board (21).

4. A high-purity nano-zirconia powder acidification and alkalization impurity removal and purification device according to claim 3, It is characterized in that: An evaporation dryer (7) is arranged in the purification chamber (23); The evaporation dryer (7) includes a scraper (71) slidably arranged in the purification chamber (23) and connected to one end of the U-shaped water outlet pipe (4), a plurality of spray heads (72) are arranged at one end of the U-shaped water outlet pipe (4), and a plurality of one-way valves (73) are arranged on the scraper (71).

5. A high-purity nano-zirconia powder acidification and alkalization impurity removal and purification device according to claim 4, It is characterized in that: A discharge frame (74) is provided at the lower end of the purification chamber (23) on the purification tank (2). A detachable draw bin (75) is slidably arranged in the discharge frame (74), and the scraper (71) abuts against the inner wall of the draw bin (75).

6. A high-purity nano zirconia powder acidification and alkalization impurity removal and purification device according to claim 5, characterized in that: A mixing filter (8) is arranged in the mixing chamber (22); The mixing filter (8) includes a plurality of transmission shafts (81) rotatably arranged in the mixing chamber (22), and a number of stirring fan blades (82) are arranged on the transmission shafts (81).

7. A high-purity nano zirconia powder acidification and alkalization impurity removal and purification device according to claim 6, characterized in that: A filter collar (83) is arranged in the purification chamber (23), and a number of filter holes (84) are opened on the filter collar (83).

8. A high-purity nano zirconia powder acidification and alkalization impurity removal and purification device according to claim 6, characterized in that: A steam driving member (9) is arranged in the mixing chamber (22); The steam driving member (9) includes a sealing cover (91) arranged at one end of the purification tank (2). One end of the transmission shaft (81) rotatably penetrates into the purification chamber (23) and is provided with an air inlet hole (92). One end of the transmission shaft (81) rotatably penetrates into the sealing cover (91), and a number of arc-shaped nozzles (93) are circumferentially arranged on the transmission shaft (81) inside the sealing cover (91).

9. A high-purity nano zirconia powder acidification and alkalization impurity removal and purification device according to claim 8, characterized in that: A reciprocating spiral groove (94) is opened on the driving shaft (5). A driving gear (95) is rotatably arranged on the partition plate (21) inside the purification chamber (23) and is in threaded connection with the reciprocating spiral groove (94). A transmission gear (96) meshing with the driving gear (95) is arranged on the transmission shaft (81).

10. A high-purity nano zirconia powder acidification and alkalization impurity removal and purification process, using a high-purity nano zirconia powder acidification and alkalization impurity removal and purification device according to any one of claims 1-9, characterized in that, its use process includes the following steps: S1: Purification preparation. First, the zirconia dissolved by acid enters the mixing chamber (22) through the feed pipe (24), and then the driving shaft (5) is driven to move reciprocally, driving the U-shaped water inlet pipe (3) and the U-shaped water outlet pipe (4) to move reciprocally together; S2: Acidification mixing. The mixing filter (8) mixes the acid and zirconia, dissolving the zirconia into the acid to form a solution to remove most metal impurities, and filtering the zirconia solution to remove insoluble impurities; S3: Alkaline neutralization. The zirconia solution enters the first circulation chamber (12) through the U-shaped water inlet pipe (3), and the feeding pipe (65) feeds alkali into the first circulation chamber (12) for neutralization to adjust the pH value of the solution; S4: Mixing reaction. The circulation mixer (6) disturbs the zirconia solution to mix it with the alkali, causing the zirconia to precipitate in the form of a precipitate; S5: drying and solidification, the alkalized and neutralized zirconium oxide solution is transported into the purification chamber (23), the evaporation dryer (7) evaporates the water in the zirconium oxide solution to obtain dry powder, and then the dry powder is taken out and calcined to improve its crystallinity and purity; S6: Steam drive; the steam drive member (9) is powered by the steam generated by evaporation in the purification chamber (23), and heats the circulation tank (1) to increase the reaction rate of the acid and zirconium oxide.

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