CN214300385U - Electrolytic tank for producing high-purity nano alumina - Google Patents
Electrolytic tank for producing high-purity nano alumina Download PDFInfo
- Publication number
- CN214300385U CN214300385U CN202023113131.0U CN202023113131U CN214300385U CN 214300385 U CN214300385 U CN 214300385U CN 202023113131 U CN202023113131 U CN 202023113131U CN 214300385 U CN214300385 U CN 214300385U
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- CN
- China
- Prior art keywords
- fixedly connected
- box body
- protection box
- producing high
- box cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 70
- 238000009826 distribution Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 230000001681 protective effect Effects 0.000 claims description 18
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 14
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 14
- 241001330002 Bambuseae Species 0.000 claims description 14
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 14
- 239000011425 bamboo Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 238000005868 electrolysis reaction Methods 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 26
- 210000004027 cell Anatomy 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 5
- 210000005056 cell body Anatomy 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 8
- 239000002085 irritant Substances 0.000 description 5
- 231100000021 irritant Toxicity 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 206010022998 Irritability Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910001610 cryolite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Electrolytic Production Of Metals (AREA)
Abstract
The utility model relates to the technical field of electrolytic cells, and discloses an electrolytic cell for producing high-purity nano-alumina, which comprises a protection box body, wherein the protection box body is of a hollow structure with an open upper surface, the left side of the protection box body is fixedly connected with a power distribution controller, the right side of the protection box body is fixedly connected with a liquid discharge pipe, the outer side wall of the liquid discharge pipe is provided with a liquid discharge valve, the inner lower surface of the protection box body is fixedly connected with a fixed block, and the upper surface of the fixed block is fixedly connected with a cell body; the utility model discloses a set up simple structure, convenient to use can protect the cell body of reaction through the protection box that sets up, and is airtight with whole through the case lid simultaneously to and drive the puddler through the motor and rotate, the reaction material of be, can be before the reaction to abundant stirring, thereby make the reaction more complete.
Description
Technical Field
The utility model relates to the technical field of electrolytic cells, in particular to an electrolytic cell for producing high-purity nano alumina.
Background
The aluminum oxide is white crystalline powder, the aluminum oxide is proved to have various noble crystals, the aluminum is obtained by electrolysis, the industrial production of the electrolytic aluminum usually adopts a cryolite-aluminum oxide molten salt electrolysis method, the molten cryolite is a solvent, the aluminum oxide is used as a solute, a carbon body is used as an anode, the aluminum liquid is used as a cathode, after strong direct current is introduced, electrochemical reaction is carried out on two poles in an electrolytic cell under the condition of high temperature, and the electrolysis is carried out.
The existing high-purity nano alumina electrolytic cell has certain defects in design, can generate toxic gases in the electrolytic process, and can not only cause harm to the bodies of workers but also pollute the environment very much if the toxic gases are not directly discharged after being treated, and the materials required by electrolysis cannot be well mixed after being fully stirred by a device before electrolysis, so that the reaction is incomplete, and the added liquid is inconvenient to quantitatively add, so that the electrolytic cell for producing high-purity nano alumina is required.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Aiming at the defects of the prior art, the utility model provides an electrolytic cell for producing high-purity nano alumina, which solves the problems provided in the background.
(II) technical scheme
In order to achieve the above object, the utility model provides a following technical scheme: an electrolytic tank for producing high-purity nano aluminum oxide comprises a protective tank body, wherein the protective tank body is of a hollow structure with an opening on the upper surface, the left side of the protective tank body is fixedly connected with a power distribution controller, the right side of the protective tank body is fixedly connected with a liquid discharge pipe, the outer side wall of the liquid discharge pipe is provided with a liquid discharge valve, the lower surface of the inside of the protective tank body is fixedly connected with a fixed block, the upper surface of the fixed block is fixedly connected with a tank body, an anode rod, an electrolyte placer and a cathode rod are sequentially fixed in the tank body from left to right, the bottom ends of the anode rod and the cathode rod are fixedly connected with a lead between the power distribution controller, the left end of the liquid discharge pipe penetrates through the right side of the protective tank body and is communicated with the lower surface of the tank body, a tank cover is arranged above the protective tank body, and the lower surface of the tank cover is fixedly connected with a clamping ring, the utility model discloses a case lid, including case lid, blast pipe, exhaust hole, motor, output shaft bottom, the exhaust hole of run-through formula is seted up to the upper surface of case lid, the inside in exhaust hole is pegged graft and is had the blast pipe, the blast pipe is kept away from the one end fixedly connected with filter screen of case lid, the left end fixedly connected with closing cap of filter screen, the inside wall fixedly connected with active carbon adsorption layer of blast pipe, the upper surface center department fixedly connected with motor of case lid, the output shaft bottom of motor is located the lower fixed surface of case lid is connected with the disc, the lateral wall symmetry of disc is fixed with the puddler.
Preferably, the lower surface of the protection box body is fixedly connected with a non-slip mat.
Preferably, the front surface of the protective box body is provided with a glass window.
Preferably, the upper surface of the box cover is positioned at the outer side of the exhaust pipe and is fixedly connected with a rubber ring.
Preferably, the upper surface of case lid is located the right side of motor is equipped with the liquid feeding section of thick bamboo, the inside sliding connection of liquid feeding section of thick bamboo has the piston, the last fixed surface of piston is connected with the push rod, the right side fixedly connected with communicating pipe of liquid feeding section of thick bamboo, keep away from communicating pipe the one end fixedly connected with filling opening of liquid feeding section of thick bamboo, the inside dismantlement of filling opening is connected with the rubber buffer, the lower surface integrated into one piece of liquid feeding section of thick bamboo has the dripper, the bottom of dripper runs through the case lid, and with case lid fixed connection, the liquid feeding section of thick bamboo with the filling opening is the front surface and is provided with the transparent material of scale.
Preferably, the upper surface of the case cover is fixedly connected with a handle positioned at the outer side of the motor.
Preferably, the inner side wall of the clamping ring is fixedly connected with a sealing ring.
(III) advantageous effects
The utility model provides an electrolytic cell for producing high-purity nano alumina, which has the following beneficial effects:
(1) the utility model discloses a set up simple structure, convenient to use can protect the cell body of reaction through the protection box that sets up, and is airtight with whole through the case lid simultaneously to and drive the puddler through the motor and rotate, the reaction material of be, can be before the reaction to abundant stirring, thereby make the reaction more complete.
(2) The utility model discloses a setting can carry out abundant absorption through the active carbon adsorption layer in the blast pipe with the irritability gas that produces during reaction, prevents to be absorbed by the people, causes harmful effects, places impurity through the filter screen simultaneously and sees through inside the blast pipe admission gear for the internal environment is clean.
(3) The utility model discloses a setting can carry out the interpolation work of liquid through the scale strip that sets up on according to filling opening and the liquid feeding section of thick bamboo, guarantees the accuracy of liquid addition for the reaction is more complete, avoids the waste of material.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
fig. 3 is an enlarged schematic structural diagram of a in fig. 2 of the present invention.
In the figure: 1. a protective box body; 2. a power distribution controller; 3. a liquid discharge pipe; 4. a drain valve; 5. a fixed block; 6. a trough body; 7. an anode rod; 8. an electrolyte placer; 9. a cathode bar; 10. a wire; 11. a box cover; 12. a clamping ring; 13. an exhaust pipe; 14. a filter screen; 15. sealing the cover; 16. an activated carbon adsorption layer; 17. a motor; 18. a disc; 19. a stirring rod; 20. a non-slip mat; 21. a glass window; 22. a rubber ring; 23. a liquid adding cylinder; 24. a piston; 25. a push rod; 26. a communicating pipe; 27. a liquid filling port; 28. a liquid dropping head; 29. a handle; 30. a seal ring; 31. a rubber plug; 32. and (4) exhausting holes.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-3, the utility model provides a technical solution: an electrolytic tank for producing high-purity nano aluminum oxide comprises a protective tank body 1, wherein the protective tank body 1 is of a hollow structure with an opening on the upper surface, the left side of the protective tank body 1 is fixedly connected with a power distribution controller 2, the right side of the protective tank body 1 is fixedly connected with a liquid discharge pipe 3, the outer side wall of the liquid discharge pipe 3 is provided with a liquid discharge valve 4, the lower surface of the inside of the protective tank body 1 is fixedly connected with a fixed block 5, the upper surface of the fixed block 5 is fixedly connected with a tank body 6, reactant placing substances and transparent materials are reacted with reactants, an anode rod 7, an electrolyte placer 8 and a cathode rod 9 are sequentially fixed in the tank body 6 from left to right, a lead 10 is fixedly connected between the bottom end of the anode rod 7 and the bottom end of the cathode rod 9 and the power distribution controller 2, the left end of the liquid discharge pipe 3 penetrates through the right side of the protective tank body 1 and is communicated with the lower surface of the tank body 6, a tank cover 11 is arranged above the protective tank body 1, the lower surface of the box cover 11 is fixedly connected with a clamping ring 12, the upper surface of the box cover 11 is provided with a through type exhaust hole 32, an exhaust pipe 13 is inserted in the exhaust hole 32, one end of the exhaust pipe 13 far away from the box cover 11 is fixedly connected with a filter screen 14, the left end of the filter screen 14 is fixedly connected with a sealing cover 15, the inner side wall of the exhaust pipe 13 is fixedly connected with an activated carbon adsorption layer 16, the center of the upper surface of the box cover 11 is fixedly connected with a motor 17, the bottom end of an output shaft of the motor 17 is positioned on the lower surface of the box cover 11 and is fixedly connected with a disc 18, the outer side wall of the disc 18 is symmetrically fixed with a stirring rod 19, the device is arranged, the device is fixed with a protection box body 1 through a fixed block 5 by utilizing the outside of the groove body 6, thereby playing a protection role on the inner groove body 6, the anode rod 7, an electrolyte placer 8 and a cathode rod 9 in the groove body 6 are connected with a power distribution controller 2 by utilizing a lead 10, the reaction is controlled to occur, the clamping ring 12 under the box cover 11 is utilized, the installation of the box body 1 is convenient and protected, internal gas is discharged through the arranged exhaust pipe 13, irritant gas is absorbed through the activated carbon adsorption layer 16 and is prevented from being sucked by a human body, impurities are prevented from entering the groove body 6 through the arranged filter screen 14 and the arranged sealing cover 15, the reaction is influenced, the disc 18 is driven to rotate through the motor 17, so that materials in the groove body 6 can be uniformly stirred through the stirring rod 19 before the reaction, the reaction is more sufficient, the waste is avoided, the discharge of liquid is controlled through the liquid discharge pipe 3 and the liquid discharge valve 4, the splicing relation between the exhaust pipe 13 and the exhaust hole 32 is utilized, the exhaust pipe 13 is convenient to replace, the whole reaction can be uniformly stirred after the arrangement, the reaction is more sufficient, meanwhile, the irritant gas can be absorbed, preventing human body from inhaling.
Further, the lower surface of the protection box body 1 is fixedly connected with the non-slip mat 20, so that the stable placement of the device is ensured, and the device is prevented from moving.
Furthermore, the front surface of the protection box body 1 is provided with a glass window 21, so that the reaction condition inside can be conveniently observed.
Further, the upper surface of case lid 11 is located the outside fixedly connected with rubber circle 22 of blast pipe 13, guarantees the stability of blast pipe 13 and the grafting of case lid 11, guarantees the leakproofness simultaneously.
Further, a liquid adding cylinder 23 is arranged on the right side of the motor 17 on the upper surface of the box cover 11, a piston 24 is connected inside the liquid adding cylinder 23 in a sliding manner, a push rod 25 is fixedly connected to the upper surface of the piston 24, a communicating pipe 26 is fixedly connected to the right side of the liquid adding cylinder 23, one end of the communicating pipe 26 far away from the liquid adding cylinder 23 is fixedly connected with a liquid adding port 27, a rubber plug 31 is detachably connected inside the liquid adding port 27, a liquid dropping head 28 is integrally formed on the lower surface of the liquid adding cylinder 23, the bottom end of the liquid dropping head 28 penetrates through the box cover 11 and is fixedly connected with the box cover 11, the liquid adding cylinder 23 and the liquid adding port 27 are both made of transparent materials with scales on the front surfaces, required liquid is added into the liquid adding port 27 by opening the rubber plug 31, flows into the liquid adding cylinder 23 through the communicating pipe 26, the liquid flows into the liquid adding cylinder 23 through the liquid dropping head 28 under the pushing of the push rod 25 and the piston 24, through the arrangement, the scale that the front surface of liquid feeding section of thick bamboo 23 and the front surface of filling opening 27 set up is conveniently passed through, and the addition of control liquid avoids adding more or adding less for the reaction is incomplete, causes extravagant problem.
Further, a handle 29 is fixedly connected to the upper surface of the case cover 11 at the outer side of the motor 17, so that the case cover 11 can be opened conveniently.
Further, the inner side wall of the clamping ring 12 is fixedly connected with a sealing ring 30, so that stable installation of the box cover 11 and the protection box body 1 is guaranteed, and meanwhile, the box cover and the protection box body are convenient to detach.
To sum up, the utility model discloses a work flow: the device is fixed with a protection box body 1 through a fixing block 5 outside the tank body 6, so that the internal tank body 6 is protected, an anode rod 7, an electrolyte placer 8 and a cathode rod 9 in the tank body 6 are connected with a power distribution controller 2 through a lead 10 to control reaction, a clamping ring 12 below a box cover 11 is used for facilitating installation of the protection box body 1, internal gas is discharged through an arranged exhaust pipe 13, irritant gas is absorbed through an activated carbon adsorption layer 16 to prevent the irritant gas from being sucked by a human body, impurities are prevented from entering the tank body 6 through the exhaust pipe 13 to influence the reaction through a arranged filter screen 14 and a sealing cover 15, a disc 18 is driven to rotate through a motor 17, so that substances in the tank body 6 can be uniformly stirred through a stirring rod 19 before the reaction, the reaction is more sufficient, waste is avoided, the discharge of liquid is controlled through a liquid discharge pipe 3 and a liquid discharge valve 4, by utilizing the splicing relation between the exhaust pipe 13 and the exhaust hole 32, the exhaust pipe 13 is convenient to replace, the whole device can uniformly stir the internal reactant after being arranged, so that the reaction is more sufficient, meanwhile, irritant gas can be absorbed, the human body is prevented from being sucked, the rubber plug 31 is opened, the required liquid is added towards the inside of the liquid adding opening 27 and flows into the liquid adding barrel 23 through the communicating pipe 26, the liquid is enabled to flow into the inside of the groove body 6 through the liquid dropping head 28 under the pushing of the push rod 25 and the piston 24, through the arrangement, the scales arranged on the front surface of the liquid adding barrel 23 and the front surface of the liquid adding opening 27 are convenient to pass through, the adding amount of the liquid is controlled, the phenomenon of adding more or adding less liquid is avoided, the reaction is incomplete, the waste problem is caused, the device utilizes the anti-skid pad 20, the stable placement of the device is ensured, the movement is prevented, and the internal reaction condition is convenient to watch through the glass window 21, utilize rubber circle 22, guarantee the stability of blast pipe 13 and case lid 11 grafting, guarantee the seal simultaneously, through handle 29, conveniently open case lid 11, through sealing washer 30, guarantee the stable installation of case lid 11 and protection box 1, the department of sealing is airtight, convenient dismantlement simultaneously, and device overall structure is simple, and convenient to use is worth promoting.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an electrolysis trough that production high purity nanometer aluminium oxide used, includes protection box (1), its characterized in that: the protection box body (1) is of a hollow structure with an opening on the upper surface, a power distribution controller (2) is fixedly connected to the left side of the protection box body (1), a liquid discharge pipe (3) is fixedly connected to the right side of the protection box body (1), a liquid discharge valve (4) is arranged on the outer side wall of the liquid discharge pipe (3), a fixed block (5) is fixedly connected to the lower surface in the protection box body (1), a groove body (6) is fixedly connected to the upper surface of the fixed block (5), an anode rod (7), an electrolyte placer (8) and a cathode rod (9) are sequentially fixed in the groove body (6) from left to right, a lead (10) is fixedly connected between the bottom end of the anode rod (7) and the bottom end of the cathode rod (9) and the power distribution controller (2), and the left end of the liquid discharge pipe (3) penetrates through the right side of the protection box body (1), and is communicated with the lower surface of the groove body (6), a box cover (11) is arranged above the protective box body (1), the lower surface of the box cover (11) is fixedly connected with a clamping ring (12), the upper surface of the box cover (11) is provided with a through type exhaust hole (32), an exhaust pipe (13) is inserted in the exhaust hole (32), a filter screen (14) is fixedly connected with one end of the exhaust pipe (13) far away from the box cover (11), a sealing cover (15) is fixedly connected at the left end of the filter screen (14), an active carbon adsorption layer (16) is fixedly connected on the inner side wall of the exhaust pipe (13), the center of the upper surface of the box cover (11) is fixedly connected with a motor (17), the bottom end of an output shaft of the motor (17) is located on the lower surface of the box cover (11) and is fixedly connected with a disc (18), and stirring rods (19) are symmetrically fixed on the outer side wall of the disc (18).
2. The electrolytic cell for producing high-purity nano alumina according to claim 1, characterized in that: the lower surface of the protection box body (1) is fixedly connected with an anti-slip mat (20).
3. The electrolytic cell for producing high-purity nano alumina according to claim 1, characterized in that: the front surface of the protective box body (1) is provided with a glass window (21).
4. The electrolytic cell for producing high-purity nano alumina according to claim 1, characterized in that: the upper surface of the box cover (11) is positioned on the outer side of the exhaust pipe (13) and is fixedly connected with a rubber ring (22).
5. The electrolytic cell for producing high-purity nano alumina according to claim 1, characterized in that: the upper surface of case lid (11) is located the right side of motor (17) is equipped with liquid feeding section of thick bamboo (23), the inside sliding connection of liquid feeding section of thick bamboo (23) has piston (24), the last fixed surface of piston (24) is connected with push rod (25), the right side fixedly connected with communicating pipe (26) of liquid feeding section of thick bamboo (23), keep away from communicating pipe (26) the one end fixedly connected with filling opening (27) of liquid feeding section of thick bamboo (23), the internal disassembly of filling opening (27) is connected with rubber buffer (31), the lower surface integrated into one piece of liquid feeding section of thick bamboo (23) has drip head (28), the bottom of drip head (28) is run through case lid (11), and with case lid (11) fixed connection, liquid feeding section of thick bamboo (23) with filling opening (27) are the front surface and are provided with the transparent material of scale.
6. The electrolytic cell for producing high-purity nano alumina according to claim 1, characterized in that: the upper surface of the box cover (11) is positioned at the outer side of the motor (17) and is fixedly connected with a handle (29).
7. The electrolytic cell for producing high-purity nano alumina according to claim 1, characterized in that: and the inner side wall of the clamping ring (12) is fixedly connected with a sealing ring (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023113131.0U CN214300385U (en) | 2020-12-22 | 2020-12-22 | Electrolytic tank for producing high-purity nano alumina |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023113131.0U CN214300385U (en) | 2020-12-22 | 2020-12-22 | Electrolytic tank for producing high-purity nano alumina |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214300385U true CN214300385U (en) | 2021-09-28 |
Family
ID=77860335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023113131.0U Expired - Fee Related CN214300385U (en) | 2020-12-22 | 2020-12-22 | Electrolytic tank for producing high-purity nano alumina |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214300385U (en) |
-
2020
- 2020-12-22 CN CN202023113131.0U patent/CN214300385U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210928 |
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| CF01 | Termination of patent right due to non-payment of annual fee |