CN113426175A - Graphene slurry filtering system and preparation process - Google Patents
Graphene slurry filtering system and preparation process Download PDFInfo
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- CN113426175A CN113426175A CN202110711480.2A CN202110711480A CN113426175A CN 113426175 A CN113426175 A CN 113426175A CN 202110711480 A CN202110711480 A CN 202110711480A CN 113426175 A CN113426175 A CN 113426175A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 63
- 239000002002 slurry Substances 0.000 title claims abstract description 51
- 238000001914 filtration Methods 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 55
- 238000003860 storage Methods 0.000 claims abstract description 53
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 28
- 239000010439 graphite Substances 0.000 claims abstract description 28
- -1 graphite alkene Chemical class 0.000 claims abstract description 21
- 239000011268 mixed slurry Substances 0.000 claims description 22
- 239000011812 mixed powder Substances 0.000 claims description 21
- 238000005086 pumping Methods 0.000 claims description 21
- 239000006185 dispersion Substances 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000000227 grinding Methods 0.000 claims description 14
- 238000000498 ball milling Methods 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000001804 emulsifying effect Effects 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 238000004945 emulsification Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
- B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The utility model relates to a graphite alkene thick liquids filtration system and preparation technology relates to graphite alkene thick liquids preparation technical field, its technical scheme mainly includes the storage tank, filter equipment, take out the material device and connect the material jar, the storage tank is in order to be used for placing the graphite alkene thick liquids that have emulsified and treat the filtration, connect the material jar in order to be used for accepting the graphite alkene thick liquids that filter accomplished, the export of storage tank and filter equipment's access connection, filter equipment's export and the access connection of taking out the material device, the export of taking out the material device with connect material jar access connection. The graphene slurry has the effect of improving the product quality of graphene slurry.
Description
Technical Field
The application relates to the technical field of graphene slurry preparation, in particular to a graphene slurry filtering system and a preparation process.
Background
At present, due to the unique performance characteristics of graphene, graphene becomes a research hotspot in the international world in recent years, is widely applied, and receives great attention from the scientific and technological circles and the industrial circles of various countries. The graphene slurry is divided into graphene conductive slurry, graphene heat dissipation coating, graphene electric heating coating and the like, and the products have the advantages of high electrical conductivity, high thermal conductivity, low cost and the like, and can be widely applied to products such as super-capacitance, lithium batteries and photoelectric devices.
In chinese patent publication No. CN109721282A, a method for preparing graphene-based aqueous slurry is disclosed, which comprises the following steps: placing graphene and graphite oxide solid in a grinding dispersion machine for dispersion grinding to form mixed powder, placing the mixed powder in aqueous dispersion liquid for ball milling to obtain mixed liquid, adding the mixed liquid into the mixed powder, a binder and other auxiliaries under an ultrasonic condition, performing ultrasonic vibration in real-time stirring, detecting the pH value in the mixed slurry, taking out the mixed slurry, placing the mixed slurry in an emulsifying machine again, and performing emulsification treatment on the mixed slurry under the condition of 60-66 ℃, wherein the emulsification time is 12-15min, and the working pressure is 6-9 bar.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: in the prior art, in the preparation process of graphene slurry, finished products are directly packed after emulsification treatment by an emulsifying machine, but in the actual production process, the problem of poor quality of the graphene slurry caused by the condition that part of graphene powder is not dispersed and emulsified exists, so improvement is needed.
Disclosure of Invention
In order to improve the product quality of graphene slurry, the application provides a graphene slurry filtering system and a preparation process.
On the one hand, the graphene slurry filtering system provided by the application adopts the following technical scheme:
the utility model provides a graphite alkene thick liquids filtration system, includes storage tank, filter equipment, takes out the material device and connects the material jar, the storage tank is in order to be used for placing the graphite alkene thick liquids that have emulsified and treat the filtration, the export of storage tank and filter equipment's access connection, filter equipment's export and the access connection who takes out the material device, take out the export of material device and connect material jar access connection.
Through adopting above-mentioned technical scheme, further filter the graphite alkene thick liquids after the emulsification through setting up storage tank, filter equipment, taking out the material device and connect the material jar, filter away the graphite alkene powder of part undispersed emulsification in the graphite alkene thick liquids, with the product quality of further improvement graphite alkene thick liquids.
Optionally, be provided with rotatory impeller on the position that is located export week side in the storage tank, the export of storage tank is just to rotatory impeller's eccentric position department, when taking out the material to the storage tank, the graphite alkene thick liquids that flow will drive rotatory impeller and rotate.
Through adopting above-mentioned technical scheme, it is provided with rotatory impeller to rotate through the exit at the storage tank for when extracting liquid in the storage tank, the effort will be applyed to rotatory impeller's eccentric position to the liquid that flows in the storage tank, and then drive rotatory impeller and rotate, and it is rotatory to drive rotatory impeller through the effort with the help of flowing graphite alkene thick liquids, and then carries out the effect of stirring to the graphite alkene thick liquids in the storage tank, and then improves the degree of consistency of graphite alkene thick liquids in the storage tank.
Optionally, the filtering device comprises a connecting piece, a converting piece and a filtering net, the connecting piece is arranged in a hollow spherical shape, and a feeding hole and a discharging hole which are respectively connected with the material storage tank and the material pumping device are arranged on the connecting piece; the conversion part is rotatably arranged in the connecting part, is connected with the connecting part in a sealing manner, and comprises a rotating shaft and a plurality of partition plates, the axis of the rotating shaft is overlapped with the circle center of the connecting part, the partition plates are circumferentially fixed to the rotating shaft around the rotating shaft, the conversion part isolates the inside of the connecting part to form a plurality of closed cavities, and a feed inlet and a discharge outlet of the connecting part are communicated to the same cavity; the filter screen sets up in each cavity, each the filter screen all can be dismantled with the converting part and be connected, the cavity divides to have the chamber of flowing and replaces the chamber, the chamber of flowing sets up with discharge gate and the feed inlet intercommunication of connecting piece, the connecting piece is seted up and is replaced the replacement mouth that the chamber communicates, the filter screen can be followed and is replaced the mouth and take out.
By adopting the technical scheme, the graphene slurry from the storage tank is filtered by arranging the connecting piece and the filter screen, and the filter screen is convenient to replace by arranging the conversion piece; when the filter screen needs to be changed, a new filter screen is arranged in the replacement cavity, the conversion part is pushed to rotate, the replacement cavity is switched to the original flow cavity until the original flow cavity is switched, the new filter screen is utilized to filter, the filter screen blocked in the original flow cavity is rotated to the replacement port, the filter screen can be taken down from the replacement port, and the new filter screen is replaced, so that the filter screen is convenient to replace.
Optionally, four partition plates are uniformly distributed, and each cavity is further provided with two transfer cavities which are clamped between the flow cavity and the displacement cavity.
Through adopting above-mentioned technical scheme, through being provided with four baffles, will increase the quantity that can bear the weight of the filter screen on the converting part, the setting in two transfer chambeies will have the effect of keeping apart the flow chamber and replacing the chamber simultaneously, further ensures the leakproofness in flow chamber.
Optionally, the filter screen all slides along the pivot radial direction and inserts to the converting part on, set up the groove that slides that supplies each filter screen to slide the grafting on the converting part inside wall, each filter screen week side all is provided with the sealing strip, each the filter screen all slides the grafting and fixes to sliding in the groove.
Through adopting above-mentioned technical scheme, supply the filter screen to slide through being provided with the groove of sliding on the conversion part and peg graft the installation, the installation and the dismantlement of the filter screen of being convenient for.
Optionally, the groove bottom of each sliding groove close to one end of the rotating shaft is provided with an elastic piece, and when one end of the filter screen far away from the rotating shaft abuts against the inner wall of the connecting piece, the elastic pieces are in a compressed state.
Through adopting above-mentioned technical scheme, utilize the elastic force of elastic component to push away the filter screen from the groove tank bottom that slides to keep away from the one end card of the groove tank bottom that slides with the filter screen and establish to replacement mouth department, convenient to use person is from taking off the elastic component.
Optionally, the connecting piece includes interior casing, shell body and spliced pole, interior casing sets up in the shell body with one heart, interior casing has the elastic deformation characteristic, the spliced pole is connected to between the outer wall of interior casing and the inside wall of shell body, form inclosed inflation chamber between interior casing and the shell body, still be provided with on the shell body with inflate the control valve that the chamber intercommunication set up.
Through adopting above-mentioned technical scheme, through setting up interior casing and shell body to form confined inflation chamber between the two, inflate toward inflating the intracavity through the control valve on the shell body, exert pressure and take place contraction deformation to the internal casing, and then improve the tight degree of support between interior casing and the converting part, and then improve the leakproofness between converting part and the connecting piece.
Optionally, a vibrator is further arranged on the outer wall of the connecting piece.
Through adopting above-mentioned technical scheme, utilize the vibration effect of electromagnetic shaker for filter screen on the converting part also shakes, improves the homogeneity of graphite alkene thick liquids on the filter screen, improves the filter effect of filter screen.
Optionally, an internal thread sleeve convenient for pipeline connection is arranged on the outer wall of the connecting piece, and the feed inlet and the discharge outlet of the connecting piece are both positioned on the inner side of the internal thread sleeve.
Through adopting above-mentioned technical scheme, the setting of internal thread cover will be convenient for be connected of connecting piece and pipeline.
On the other hand, the application also provides a preparation process adopting the graphene slurry filtering system, which comprises the following steps:
s1: selecting graphene, graphite oxide solid, aqueous dispersion liquid, mixed powder, a binder and other auxiliaries as raw materials, and storing the selected raw materials in a sterile environment at the temperature of 12-18 ℃, wherein during storage, ventilation in the raw materials needs to be ensured so as to avoid reduction of the quality of the raw materials due to non-circulation of air;
s2: placing the graphene and the graphite oxide solid processed in the step S1 in a grinding dispersion machine, dispersing and grinding the raw materials at 38-44 ℃, wherein the diameter of the ground particles is less than 50nm, forming mixed powder after grinding is finished, filtering the mixed powder to remove large particles, grinding the large particles again, and mixing the large particles into the mixed powder;
s3: selecting aqueous dispersion liquid, placing the aqueous dispersion liquid in a mixing ball mill, then carrying out real-time mixing ball milling at 50-65 ℃, and placing the mixed powder in the aqueous dispersion liquid for ball milling, so that a mixed solution can be obtained, wherein the rotating speed of the ball milling treatment is 500 plus materials 800 r/min, and the ball milling time is 35-50 min;
s4: adding the mixed solution into the mixed powder, the binder and other additives under the ultrasonic condition at 45-60 ℃, carrying out ultrasonic vibration in real-time stirring, wherein the ultrasonic power is 120-180w, the working time is 30-45s, and after the ultrasonic vibration is finished, carrying out real-time mixing and stirring for 20-35min again to obtain mixed slurry;
s5: after the treatment in the step S4 is finished, detecting the pH value inside the mixed slurry, if the pH value is too high or too low, adding a proper amount of pH regulator into the mixed slurry, mixing and stirring the mixture for 10-20min, and if the pH value is normal, directly carrying out the next treatment;
s6: taking out the mixed slurry, putting the mixed slurry into an emulsifying machine again, emulsifying the mixed slurry at the temperature of 60-66 ℃ for 12-15min at the working pressure of 6-9bar, and naturally cooling to obtain graphene slurry;
s7, placing the graphene slurry emulsified in the S6 into a storage tank, starting a material pumping device, pumping the graphene slurry in the storage tank through a filtering device and the material pumping device, finally recycling the graphene slurry into a material receiving tank, and taking out and packaging the graphene slurry in the material receiving tank.
By adopting the technical scheme, the emulsified graphene slurry is further filtered, so that the product quality of the graphene slurry is improved.
In summary, the present application includes at least one of the following beneficial technical effects:
the emulsified graphene slurry is filtered again by arranging the storage tank, the filtering device, the material pumping device and the material receiving tank, so that the product quality of the graphene slurry is improved;
through setting up filter equipment and including connecting piece, converting part and filter screen realization filtering action, the change of the filter screen of will being convenient for is so set up simultaneously.
Drawings
FIG. 1 is a schematic diagram of the overall construction of a filtration system according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of a storage tank of an embodiment of the present application;
fig. 3 is a schematic cross-sectional structure diagram of a filter device according to an embodiment of the present application.
Reference numerals: 1. a material storage tank; 2. a filtration device; 21. a connecting member; 211. an inner housing; 212. an outer housing; 213. connecting columns; 22. a conversion member; 221. a rotating shaft; 222. a partition plate; 23. a filter screen; 3. a material pumping device; 4. a material receiving tank; 5. rotating the impeller; 6. a feed inlet; 7. a discharge port; 8. a replacement port; 9. a flow chamber; 10. a transfer chamber; 11. a replacement lumen; 12. a sliding groove; 13. an elastic member; 14. an inflation cavity; 15. a control valve; 16. a vibrator; 17. and an internal thread sleeve.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses graphite alkene thick liquids filtration system. Referring to fig. 1, the filtering system includes a storage tank 1, a filtering device 2, a material pumping device 3 and a material receiving tank 4, the storage tank 1 is used for placing the emulsified and to-be-filtered graphene slurry, the material receiving tank 4 is used for receiving the graphene slurry after filtering, an outlet of the storage tank 1 is connected with an inlet of the filtering device 2, an outlet of the filtering device 2 is connected with an inlet of the material pumping device 3, and an outlet of the material pumping device 3 is connected with an inlet of the material receiving tank 4. The specific pumping device 3 is set as a pumping pump.
Wherein, refer to fig. 1, fig. 2 shows, the export of storage tank 1 sets up in storage tank 1 bottom, the rotatory impeller 5 that is located 1 export week side of storage tank is installed to the bottom in storage tank 1, rotatory impeller 5 rotates and installs to storage tank 1 bottom, the pivot 221 axis direction level of rotatory impeller 5 sets up, the export of storage tank 1 is just to rotatory impeller 5's eccentric position department, when taking out the material to storage tank 1, the interior graphite alkene thick liquids of flow of storage tank 1 will drive rotatory impeller 5 and rotate, and then realize the effect to the stirring of graphite alkene thick liquids in storage tank 1, the effect of the interior fluid flow direction of carding storage tank 1 has simultaneously.
Referring to fig. 1 and fig. 3, the filtering apparatus 2 includes a connecting member 21, a converting member 22 and a filter screen 23, the connecting member 21 is provided with a feed inlet 6 and a discharge outlet 7 respectively connected with the storage tank 1 and the material pumping device 3, the converting member 22 is rotatably installed in the connecting member 21, the filter screen 23 on the converting member 22 is detachably provided with at least two pieces, graphene slurry enters the connecting member 21 from the feed inlet 6 and flows out from the discharge outlet 7 after being filtered by the filter screen 23, the connecting member 21 is provided with a replacement port 8 convenient for replacing the filter screen 23, and different filter screens 23 can be switched to the replacement port 8 through rotating the converting member 22 to perform replacement operation of the filter screen 23.
Specifically, referring to fig. 1 and 3, the connecting member 21 is provided in a hollow spherical shape, and the peripheral side of the converting member 22 is hermetically connected to the inner side wall of the connecting member 21; the conversion part 22 comprises a rotating shaft 221 and four partition plates 222, the axis of the rotating shaft 221 is overlapped with the center of the circle of the connecting part 21, two ends of the rotating shaft 221 are rotatably connected with the connecting part 21, the partition plates 222 are uniformly and circumferentially distributed around the axis of the rotating shaft 221 and fixed on the rotating shaft 221, and the conversion part 22 separates the inside of the connecting part 21 to form a plurality of closed cavities.
Referring to fig. 1 and 3, the cavity is divided into a flow cavity 9, a transfer cavity 10 and a displacement cavity 11, a feed inlet 6 and a discharge outlet 7 of a connecting piece 21 are communicated to the flow cavity 9, the displacement cavity 11 is arranged on the opposite side of the flow cavity 9, the circumferential direction of each cavity ring rotating shaft 221 is sequentially arranged into the flow cavity 9, the transfer cavity 10, the displacement cavity 11 and the transfer cavity 10, a displacement port 8 is communicated with the displacement cavity 11, the displacement port 8 is in the size of a quarter sphere, each filter screen 23 is arranged in the shape of a quarter umbrella, the arc center is overlapped with the axis of the rotating shaft 221, and each filter screen 23 can be taken out in a sliding manner from the displacement port 8.
Referring to fig. 1 and 3, each filter screen 23 is slidably inserted into the converter 22 along the radial direction of the rotating shaft 221, a sliding groove 12 for slidably inserting the filter screen 23 is formed in the inner side wall of each cavity, a sealing strip is fixed on the periphery of each filter screen 23, each filter screen 23 is slidably inserted into the sliding groove 12, an elastic part 13 is fixed on the bottom of each sliding groove 12 near one end of the rotating shaft 221, the elastic part 13 is a compression spring, and when one end of each filter screen 23 far away from the rotating shaft 221 is abutted to the inner wall of the connecting part 21, the elastic part 13 is in a compression state; when filter screen 23 was located and replaces the chamber 11, the outward flange card of filter screen 23 established to replacing mouth 8 department, when needing to change filter screen 23, inwards pressed filter screen 23 to the outer end and was located connecting piece 21 inside wall to compression elastic component 13, can rotate converting element 22, filter screen 23 that is located connecting piece 21 inboard will be under the elasticity reaction effect of elastic component 13 with the butt of connecting piece inside wall.
Further, referring to fig. 1 and 3, the connecting member 21 includes an inner housing 211, an outer housing 212, and a connecting column 213, the inner housing 211 is concentrically disposed in the outer housing 212, the connecting column 213 is fixedly connected between an outer wall of the inner housing 211 and an inner wall of the outer housing 212, a sealed inflation cavity 14 is formed between the inner housing 211 and the outer housing 212, the outer housing 212 is further provided with a control valve 15 communicated with the inflation cavity 14, the control valve 15 is used for inflating or deflating the inflation cavity 14, the control valve 15 is a ball valve, etc., the inner housing 211 is made of a silica gel having a certain elasticity, when the inflation cavity 14 is inflated, the inner housing 211 is compressed inward and compresses each partition 222, so as to improve the sealing property between the converting member 22 and the connecting member 21, and the outer housing 212 is formed by splicing two hemispheres and is fixed by welding.
Further, as shown in fig. 1 and 3, a vibrator 16 is further installed on an outer wall of the connecting member 21, and the vibrator 16 is a small vibrator. The outer wall of the connecting piece 21 is fixedly welded with an internal thread sleeve 17 convenient for pipeline connection, the feeding port 6 and the discharging port 7 of the connecting piece 21 are both positioned on the inner side of the internal thread sleeve 17, and the internal thread sleeve 17 is arranged to facilitate the connection of a pipeline and the connecting piece 21.
The implementation principle of the graphene slurry filtering system in the embodiment of the application is as follows: starting the material pumping device 3, filtering the graphene slurry in the storage tank 1 by the filtering device 2, and flowing the graphene slurry into the material receiving tank 4 through the material pumping device 3; when changing filter screen 23, rotatory converting part 22 ninety degrees, switch to the filter screen 23 of transfer chamber 10 by replacing chamber 11, through replacing chamber 11 in proper order, transfer chamber 10, flow chamber 9, so circulate, when using filter screen 23 to change to replacement mouth 8, the staff takes off filter screen 23, peg graft new filter screen 23 to sliding groove 12 in, when needing to change, release pressure to aerifing chamber 14, will press filter screen 23 to connecting piece 21 inboard, then rotatory converting part 22 again, reach the assigned position after, aerify from aerifing chamber 14.
The embodiment of the application also discloses a preparation process of the graphene slurry, which comprises the following steps:
s1: selecting graphene, graphite oxide solid, aqueous dispersion liquid, mixed powder, a binder and other auxiliaries as raw materials, and storing the selected raw materials in a sterile environment at the temperature of 12-18 ℃, wherein during storage, ventilation in the raw materials needs to be ensured so as to avoid reduction of the quality of the raw materials due to non-circulation of air;
s2: placing the graphene and the graphite oxide solid processed in the step S1 in a grinding dispersion machine, dispersing and grinding the raw materials at 38-44 ℃, wherein the diameter of the ground particles is less than 50nm, forming mixed powder after grinding is finished, filtering the mixed powder to remove large particles, grinding the large particles again, and mixing the large particles into the mixed powder;
s3: selecting aqueous dispersion liquid, placing the aqueous dispersion liquid in a mixing ball mill, then carrying out real-time mixing ball milling at 50-65 ℃, and placing the mixed powder in the aqueous dispersion liquid for ball milling, so that a mixed solution can be obtained, wherein the rotating speed of the ball milling treatment is 500 plus materials 800 r/min, and the ball milling time is 35-50 min;
s4: adding the mixed solution into the mixed powder, the binder and other additives under the ultrasonic condition at 45-60 ℃, carrying out ultrasonic vibration in real-time stirring, wherein the ultrasonic power is 120-180w, the working time is 30-45s, and after the ultrasonic vibration is finished, carrying out real-time mixing and stirring for 20-35min again to obtain mixed slurry;
s5: after the treatment in the step S4 is finished, detecting the pH value inside the mixed slurry, if the pH value is too high or too low, adding a proper amount of pH regulator into the mixed slurry, mixing and stirring the mixture for 10-20min, and if the pH value is normal, directly carrying out the next treatment;
s6: taking out the mixed slurry, putting the mixed slurry into an emulsifying machine again, emulsifying the mixed slurry at 60-66 ℃ for 12-15min under the working pressure of 6-9bar, and naturally cooling to obtain the graphene-based aqueous slurry;
s7, placing the graphene slurry emulsified in the S6 into a storage tank 1, starting a material pumping device 3, pumping the graphene slurry in the storage tank 1 through a filtering device 2 and the material pumping device 3, finally recycling the graphene slurry into a material receiving tank 4, and taking out and packaging the graphene slurry in the material receiving tank 4.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A graphite alkene thick liquids filtration system which characterized in that: including storage tank (1), filter equipment (2), take out material device (3) and connect material jar (4), storage tank (1) is in order to be used for placing the graphite alkene thick liquids that have emulsified and wait to filter, the export of storage tank (1) and the access connection of filter equipment (2), the export of filter equipment (2) and the access connection of taking out material device (3), take out the export of material device (3) and connect material jar (4) access connection.
2. The graphene slurry filtration system of claim 1, wherein: the utility model discloses a material storage tank, including storage tank (1), be located the export week side in storage tank (1) and rotate on the position and be provided with rotatory impeller (5), the export of storage tank (1) is just to the eccentric position department of rotatory impeller (5), when taking out the material to storage tank (1), the graphite alkene thick liquids that flow will drive rotatory impeller (5) and rotate.
3. The graphene slurry filtration system of claim 1, wherein: the filter device (2) comprises a connecting piece (21), a conversion piece (22) and a filter screen (23), the connecting piece (21) is arranged in a hollow spherical shape, and a feed inlet (6) and a discharge outlet (7) which are respectively connected with the storage tank (1) and the material pumping device (3) are arranged on the connecting piece (21); the conversion part (22) is rotatably arranged in the connecting part (21), the conversion part (22) is in sealing connection with the connecting part (21), the conversion part (22) comprises a rotating shaft (221) and a plurality of partition plates (222), the axis of the rotating shaft (221) is overlapped with the circle center of the connecting part (21), each partition plate (222) is circumferentially fixed to the rotating shaft (221) around the rotating shaft (221), the conversion part (22) isolates the inside of the connecting part (21) to form a plurality of closed cavities, and a feed port (6) and a discharge port (7) of the connecting part (21) are communicated to the same cavity; filter screen (23) set up in each cavity, each filter screen (23) all can be dismantled with converting part (22) and be connected, the cavity divide into flow chamber (9) and replacement chamber (11), discharge gate (7) and feed inlet (6) intercommunication setting of flow chamber (9) and connecting piece (21), replacement mouth (8) with replacement chamber (11) intercommunication are seted up in connecting piece (21), filter screen (23) can be followed and are replaced mouthful (8) and take out.
4. The graphene slurry filtration system according to claim 3, wherein: four partition plates (222) are uniformly distributed, and each cavity is also divided into two transfer cavities (10) which are clamped between the flow cavity (9) and the displacement cavity (11).
5. The graphene slurry filtration system according to claim 3, wherein: the filter screen (23) all slides along pivot (221) radial direction and inserts to on adaptor (22), set up on connecting piece (22) inside wall and supply each filter screen (23) to slide sliding groove (12) of pegging graft, each filter screen (23) week side all is provided with the sealing strip, each filter screen (23) all slide pegging graft and fix to sliding groove (12) in.
6. The graphene slurry filtration system according to claim 5, wherein: each groove bottom that slides groove (12) is close to pivot (221) one end all is provided with elastic component (13), when filter screen (23) keep away from pivot (221) one end butt joint to connecting piece (21) inner wall, elastic component (13) are in the compression state.
7. The graphene slurry filtration system according to claim 3, wherein: connecting piece (21) include interior casing (211), outer casing (212) and spliced pole (213), interior casing (211) sets up in outer casing (212) with one heart, interior casing (211) have the elastic deformation characteristic, spliced pole (213) are connected to between the outer wall of interior casing (211) and the inside wall of outer casing (212), form inclosed inflation chamber (14) between interior casing (211) and outer casing (212), still be provided with on outer casing (212) with inflation chamber (14) intercommunication control valve (15) that set up.
8. The graphene slurry filtration system according to claim 3, wherein: the outer wall of the connecting piece (21) is also provided with a vibrator (16).
9. The graphene slurry filtration system according to claim 3, wherein: be provided with internal thread cover (17) convenient to pipe connection on connecting piece (21) outer wall, feed inlet (6) and discharge gate (7) of connecting piece (21) all are located internal thread cover (17) are inboard.
10. A process for preparing a graphene slurry filtration system according to any one of claims 1 to 9, wherein: the method comprises the following steps:
s1: selecting graphene, graphite oxide solid, aqueous dispersion liquid, mixed powder, a binder and other auxiliaries as raw materials, and storing the selected raw materials in a sterile environment at the temperature of 12-18 ℃, wherein during storage, ventilation in the raw materials needs to be ensured so as to avoid reduction of the quality of the raw materials due to non-circulation of air;
s2: placing the graphene and the graphite oxide solid processed in the step S1 in a grinding dispersion machine, dispersing and grinding the raw materials at 38-44 ℃, wherein the diameter of the ground particles is less than 50nm, forming mixed powder after grinding is finished, filtering the mixed powder to remove large particles, grinding the large particles again, and mixing the large particles into the mixed powder;
s3: selecting aqueous dispersion liquid, placing the aqueous dispersion liquid in a mixing ball mill, then carrying out real-time mixing ball milling at 50-65 ℃, and placing the mixed powder in the aqueous dispersion liquid for ball milling, so that a mixed solution can be obtained, wherein the rotating speed of the ball milling treatment is 500 plus materials 800 r/min, and the ball milling time is 35-50 min;
s4: adding the mixed solution into the mixed powder, the binder and other additives under the ultrasonic condition at 45-60 ℃, carrying out ultrasonic vibration in real-time stirring, wherein the ultrasonic power is 120-180w, the working time is 30-45s, and after the ultrasonic vibration is finished, carrying out real-time mixing and stirring for 20-35min again to obtain mixed slurry;
s5: after the treatment in the step S4 is finished, detecting the pH value inside the mixed slurry, if the pH value is too high or too low, adding a proper amount of pH regulator into the mixed slurry, mixing and stirring the mixture for 10-20min, and if the pH value is normal, directly carrying out the next treatment;
s6: taking out the mixed slurry, putting the mixed slurry into an emulsifying machine again, emulsifying the mixed slurry at 60-66 ℃ for 12-15min under the working pressure of 6-9bar, and naturally cooling to obtain the graphene-based aqueous slurry;
s7, placing the graphene slurry emulsified in the S6 into a storage tank, starting a material pumping device, pumping the graphene slurry in the storage tank through a filtering device and the material pumping device, finally recycling the graphene slurry into a material receiving tank, and taking out and packaging the graphene slurry in the material receiving tank.
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| CN112426952A (en) * | 2020-11-23 | 2021-03-02 | 岳秋香 | Graphene slurry stirring device and method |
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Application publication date: 20210924 |