CN221027720U - Production system of vermiculite nano sheet - Google Patents
Production system of vermiculite nano sheet Download PDFInfo
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- CN221027720U CN221027720U CN202321736284.1U CN202321736284U CN221027720U CN 221027720 U CN221027720 U CN 221027720U CN 202321736284 U CN202321736284 U CN 202321736284U CN 221027720 U CN221027720 U CN 221027720U
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- vermiculite
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- refiner
- ball mill
- nano
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- 229910052902 vermiculite Inorganic materials 0.000 title claims abstract description 62
- 239000010455 vermiculite Substances 0.000 title claims abstract description 62
- 235000019354 vermiculite Nutrition 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000002135 nanosheet Substances 0.000 title claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 238000007873 sieving Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 abstract description 6
- 238000000498 ball milling Methods 0.000 abstract description 4
- 238000000265 homogenisation Methods 0.000 abstract description 3
- 238000009776 industrial production Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 238000004299 exfoliation Methods 0.000 description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 239000011229 interlayer Substances 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000010008 shearing Methods 0.000 description 5
- 150000001768 cations Chemical class 0.000 description 4
- 239000013078 crystal Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 238000000227 grinding Methods 0.000 description 4
- 238000009830 intercalation Methods 0.000 description 4
- 230000002687 intercalation Effects 0.000 description 4
- 238000005342 ion exchange Methods 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 2
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 description 2
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 239000002064 nanoplatelet Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052626 biotite Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- -1 magnesium-and iron-aluminum Chemical compound 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052628 phlogopite Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000012799 strong cation exchange Methods 0.000 description 1
- 230000002522 swelling effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The utility model belongs to the technical field of production of vermiculite nano sheets, and provides a production system of the vermiculite nano sheets, which comprises an expansion reactor, a washing impurity remover, a dryer, a refiner, a first centrifugal machine, a second centrifugal machine, a ball mill and a high-pressure jet homogenizing and dispersing machine. The utility model adopts a continuous composite treatment system of ultrasonic, ball milling and high-pressure dispersion and homogenization, can prepare a nano vermiculite sheet product with the yield of 80 percent, has the function of peeling layered vermiculite, has simple system operation and controllable size of the vermiculite nano sheet, and is suitable for industrial production.
Description
Technical Field
The utility model relates to the technical field of vermiculite nano sheet production, in particular to a production system of vermiculite nano sheets.
Background
Vermiculite is a magnesium-and iron-aluminum-containing layered silicate mineral, generally in the form of a plate, and is usually a product formed by the weathering and hydrothermal alteration of minerals such as biotite, phlogopite or chlorite. Because of the special structure of vermiculite, the vermiculite has unique properties, such as high temperature and easy expansion; the interlayer is constructed by weak interaction so that the interlayer has strong cation exchange property; the expanded vermiculite has the advantages of rapid volume increase, porosity increase, reduced heat conductivity, strong adsorption capacity, heat and sound insulation, fire resistance, freezing resistance, stable chemical property and slow-release moisturizing effect. The unique properties of vermiculite lead the vermiculite to be widely applied to a plurality of fields such as adsorption, catalysis, energy storage, construction, animal husbandry, agriculture, biological medicine and the like. Vermiculite is one of nonmetallic minerals with better resource prospect and potential advantage in China, and has important social and economic significance for developing basic research of vermiculite minerals in view of rich vermiculite resources in China.
Since 2004 graphene was found, exfoliation of layered materials and research into two-dimensional nanoplatelet materials resulting from exfoliation have become research hotspots in the nanoworld, which exhibit many physicochemical characteristics different from their layered precursor materials when layered materials are exfoliated into single sheets.
The vermiculite is similar to a graphite lamellar structure, and two-dimensional lamellar layers are stacked through weak interaction force to form a three-dimensional lamellar crystal. The vermiculite interlayer spacing is related to the type of interlayer cations, the cation species being different and the hydrated cation layers being different. The vermiculite layers are connected with each other mainly by virtue of Van der Waals force, and the Van der Waals force is weakened, so that the vermiculite two-dimensional nano material can be obtained.
Vermiculite belongs to lamellar minerals, and the common methods for stripping the vermiculite lamellar minerals are chemical stripping, liquid phase stripping, physical stripping and the like.
Vermiculite chemical exfoliation mainly includes ion exchange exfoliation and ion intercalation exfoliation. The ion exchange method in the vermiculite liquid phase stripping mainly utilizes the reverse osmosis action of ions, external water molecules enter the layers, the layered vermiculite obviously expands in the direction vertical to the plane of the sheet layer, the interlayer spacing is obviously increased, and then the two-dimensional nano gel vermiculite dispersion liquid is obtained under the action of ultrasonic or shearing force. The ion intercalation is that the lamellar material adsorbs ions, the ions enter the interlayer to increase interlayer spacing, the interlayer acting force is weakened, and the lamellar separation and the peeling are carried out under the shearing or ultrasonic action. For example, the vermiculite is chemically stripped by adding modifiers such as lithium chloride or sodium chloride, cations among the vermiculite layers are exchanged, and the binding force among the vermiculite layers is weakened through hydration swelling action, so that the vermiculite is stripped and separated to form thin vermiculite sheets.
Liquid phase exfoliation is commonly used to prepare two-dimensional nanomaterials. The method is characterized in that the method can produce the two-dimensional nano material with determined size and shape, but has higher requirement on solvent required for stripping and strict requirement on operation environment. Liquid phase exfoliation includes ion exchange, ion intercalation, agitation shear, and ultrasonic exfoliation. The ball milling stripping has low requirement on the solvent, and the particle size of the flaky mineral is reduced while the flaky mineral is stripped, so that the powder with determined size and morphology is difficult to generate.
The physical peeling of vermiculite mainly causes the peeling of vermiculite sheets through shearing action, ultrasonic action and ball milling action. The stirring, shearing and stripping method has the advantages of simple operation, simple device, good quality of the stripped product lamellar structure and easy realization of mass production. The method has the defects that the exfoliated product has a single-layer, multi-layer and non-exfoliated crystal mixed system, the size distribution is wide, and further centrifugal separation is often needed to obtain the narrow-size-fraction two-dimensional nano vermiculite dispersion liquid.
Ultrasonic exfoliation is the breaking of the layered crystal structure by the generated vortex jet, exfoliation into nanoplatelets. The direct ultrasonic stripping method is to strip lamellar crystals through acoustic cavitation and acoustic shearing force caused by ultrasonic waves, and a specific stripping solvent is often needed to be selected according to the properties of lamellar minerals. The ball milling stripping mainly uses the grinding force and impact force of the medium to strip the lamellar layer, which is one of the common stripping modes of lamellar minerals, and has the advantages of narrow and uniform size distribution of stripping products, large energy consumption and easily damaged lamellar structures.
In summary, the ion exchange method, the ion intercalation method and the ultrasonic stripping method are mainly applied to preparing the vermiculite two-dimensional nano dispersion liquid, and have the defects of high stripping solvent requirement, low production concentration and incapability of large-scale production, and are suitable for the field of microelectronics with high sheet quality and small consumption.
Vermiculite is a layered material, mainly composed of silicon oxygen tetrahedra and aluminum oxygen octahedra, and how to effectively disassemble them is a key for improving the utilization rate of vermiculite. How to realize the batch preparation of the nano-sized vermiculite sheet products and overcome the difficult problem of the existing nano-sized batch preparation is one of the key problems of the separation and stripping of the vermiculite.
Disclosure of utility model
The utility model aims to provide a production system for efficiently and rapidly producing vermiculite nano sheets.
In order to solve the technical problems, the utility model adopts the following technical scheme:
A production system of vermiculite nano sheets comprises an expansion reactor 1, a washing impurity remover 2, a dryer 3, a refiner 4, a first centrifugal machine 5, a second centrifugal machine 7, a ball mill 6 and a high-pressure jet homogenizing and dispersing machine 8; the discharge port of the expansion reactor 1 is communicated with the feed port of the washing impurity remover 2 through a first conveying pump 91, the discharge port of the washing impurity remover 2 is communicated with the feed port of the dryer 3 through a second conveying pump 92, the discharge port of the dryer 3 is communicated with the feed port of the refiner 4 through a third conveying pump 93, the discharge port of the first centrifugal machine 5 is communicated with the feed port of the ball mill 6 through a fourth conveying pump 94, the discharge port of the ball mill 6 is communicated with the feed port of the second centrifugal machine 7 through a fifth conveying pump 95, and the feed port of the second centrifugal machine 7 is communicated with the feed port of the high-pressure jet homogenizing and dispersing machine 8 through a sixth conveying pump 96.
Further, a collecting hopper 10 is arranged below the discharging port of the refiner 4, a first centrifugal machine 5 is arranged below the discharging port of the collecting hopper 10, the feeding port of the collecting hopper 10 is communicated with the discharging port of the refiner 4, and the discharging port of the collecting hopper 10 is communicated with the feeding port of the first centrifugal machine 5;
the expansion reactor 1 comprises heating means 101; the washing and impurity removing device 2 comprises a stirring paddle 201.
Further, a sieving machine 11 is arranged between a discharge hole of the refiner 4 and a feed hole of the collecting hopper 10, and the sieving machine 11 comprises a screen 1101;
The refiner 4, the ball mill 6 and the high-pressure jet homogenizing and dispersing machine 8 are respectively provided with a first ultrasonic device 401, a second ultrasonic device 601 and a third ultrasonic device 801.
Compared with the prior art, the utility model has the following technical effects:
1) According to the utility model, through a production system of continuous compounding of high-shear dispersion, fine grinding, ultrasonic, high-pressure jet homogenization and microjet injection, the separation of the silicon oxygen octahedron and aluminum oxygen tetrahedron structures of vermiculite is realized, the difficulty of mass production of nano vermiculite is overcome, and a feasible method is provided for mass preparation of nano vermiculite sheets.
2) The utility model can peel the lamellar vermiculite in large batch;
3) The production system has the advantages of simple operation, simple process and low energy consumption;
4) The production system is simple to operate, realizes mass production of nano vermiculite powder, has a wide application range, and is suitable for industrial production.
Drawings
FIG. 1 is a diagram of a production apparatus for nano-vermiculite sheets according to the present utility model, wherein 1 is an expansion reactor, 101 is a heating apparatus, 2 is a washing and impurity removing apparatus, 201 is a stirring paddle, 3 is a dryer, 4 is a refiner, 5 is a first centrifuge, 7 is a second centrifuge, 6 is a ball mill, 8 is a high-pressure jet homogenizing and dispersing machine, 91 is a first transfer pump, 92 is a second transfer pump, 93 is a third transfer pump, 94 is a fourth transfer pump, 95 is a fifth transfer pump, 96 is a sixth transfer pump, 10 is a collecting hopper, 11 is a sieving machine, 1101 is a screen, 401 is a first ultrasonic apparatus, 601 is a second ultrasonic apparatus, and 801 is a third ultrasonic apparatus.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples
The utility model discloses a production system of vermiculite nano sheets, which is shown in FIG. 1 and comprises an expansion reactor 1, a washing impurity remover 2, a dryer 3, a refiner 4, a first centrifugal machine 5, a second centrifugal machine 7, a ball mill 6 and a high-pressure jet homogenizing and dispersing machine 8; the discharge port of the expansion reactor 1 is communicated with the feed port of the washing impurity remover 2 through a first conveying pump 91, the discharge port of the washing impurity remover 2 is communicated with the feed port of the dryer 3 through a second conveying pump 92, the discharge port of the dryer 3 is communicated with the feed port of the refiner 4 through a third conveying pump 93, the discharge port of the first centrifugal machine 5 is communicated with the feed port of the ball mill 6 through a fourth conveying pump 94, the discharge port of the ball mill 6 is communicated with the feed port of the second centrifugal machine 7 through a fifth conveying pump 95, and the feed port of the second centrifugal machine 7 is communicated with the feed port of the high-pressure jet homogenizing and dispersing machine 8 through a sixth conveying pump 96.
In this embodiment, a collecting hopper 10 is arranged below the discharge port of the refiner 4, a first centrifugal machine 5 is arranged below the discharge port of the collecting hopper 10, the feed port of the collecting hopper 10 is communicated with the discharge port of the refiner 4, and the discharge port of the collecting hopper 10 is communicated with the feed port of the first centrifugal machine 5.
In this embodiment, the expansion reactor 1 comprises a heating device 101; the washing and impurity removing device 2 comprises a stirring paddle 201.
In this embodiment, a sieving machine 11 is disposed between the discharge port of the refiner 4 and the feed port of the collecting hopper 10, and the sieving machine 11 includes a screen 1101.
In the present embodiment, the refiner 4, the ball mill 6 and the high-pressure jet homogenizing and dispersing machine 8 are respectively provided with a first ultrasonic device 401, a second ultrasonic device 601 and a third ultrasonic device 801 inside.
According to the utility model, the high-pressure jet homogenizing dispersing machine is adopted to obtain uniformly dispersed small-size nano vermiculite slices, the yield of the nano vermiculite slices can reach more than 90%, and the problem of the existing nano-size batch preparation is solved.
The utility model adopts an intermittent high shear to pretreat vermiculite, and the vermiculite has complete structure in the peeling process; the fine grinding machine disclosed by the utility model has the advantages that the time for refining the vermiculite is not easy to be too long, and the structure of the vermiculite is easy to be damaged when the grinding time is too long; the fine ground vermiculite is subjected to high-pressure spraying homogenization and dispersion treatment, and small-size nano vermiculite sheets can be prepared in a large scale under the production system, so that the feasibility of stripping the vermiculite in the production system is proved.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (3)
1. The production system of the vermiculite nano sheets is characterized by comprising an expansion reactor (1), a washing impurity remover (2), a dryer (3), a refiner (4), a first centrifugal machine (5) and a second centrifugal machine (7), a ball mill (6) and a high-pressure jet homogenizing and dispersing machine (8); the utility model discloses a high-pressure jet homogenizing and dispersing machine, including expansion reactor (1), washing edulcoration ware (2), second delivery pump (92), third delivery pump (93) and ball mill (6), fourth delivery pump (94) and ball mill (6), ball mill (6) and second centrifuge (7) are connected through fifth delivery pump (95), second centrifuge (7) and high-pressure jet homogenizing and dispersing machine (8) are connected through sixth delivery pump (96).
2. The production system of the vermiculite nano sheets according to claim 1, wherein a collecting hopper (10) is arranged below a discharge hole of the refiner (4), a first centrifugal machine (5) is arranged below the discharge hole of the collecting hopper (10), a feed hole of the collecting hopper (10) is communicated with the discharge hole of the refiner (4), and the discharge hole of the collecting hopper (10) is communicated with the feed hole of the first centrifugal machine (5);
The expansion reactor (1) comprises heating means (101); the washing impurity remover (2) comprises a stirring paddle (201).
3. The vermiculite nano-sheet production system according to claim 2, wherein a sieving machine (11) is arranged between the outlet of the refiner (4) and the inlet of the hopper (10), the sieving machine (11) comprising a screen (1101);
The refiner (4), the ball mill (6) and the high-pressure injection homogenizing and dispersing machine (8) are respectively provided with a first ultrasonic device (401), a second ultrasonic device (601) and a third ultrasonic device (801).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321736284.1U CN221027720U (en) | 2023-06-28 | 2023-06-28 | Production system of vermiculite nano sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321736284.1U CN221027720U (en) | 2023-06-28 | 2023-06-28 | Production system of vermiculite nano sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221027720U true CN221027720U (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321736284.1U Active CN221027720U (en) | 2023-06-28 | 2023-06-28 | Production system of vermiculite nano sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221027720U (en) |
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2023
- 2023-06-28 CN CN202321736284.1U patent/CN221027720U/en active Active
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