CN219721933U - Device for recycling lithium hexafluorophosphate in battery - Google Patents
Device for recycling lithium hexafluorophosphate in battery Download PDFInfo
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- CN219721933U CN219721933U CN202321138396.7U CN202321138396U CN219721933U CN 219721933 U CN219721933 U CN 219721933U CN 202321138396 U CN202321138396 U CN 202321138396U CN 219721933 U CN219721933 U CN 219721933U
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- lithium hexafluorophosphate
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- -1 lithium hexafluorophosphate Chemical compound 0.000 title claims abstract description 47
- 238000004064 recycling Methods 0.000 title abstract description 6
- 238000002386 leaching Methods 0.000 claims abstract description 87
- 239000003792 electrolyte Substances 0.000 claims abstract description 78
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000004821 distillation Methods 0.000 claims abstract description 27
- 239000013078 crystal Substances 0.000 claims abstract description 13
- 239000012634 fragment Substances 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims description 8
- 238000010992 reflux Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000005292 vacuum distillation Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 11
- 229910003002 lithium salt Inorganic materials 0.000 abstract description 10
- 159000000002 lithium salts Chemical class 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 230000006837 decompression Effects 0.000 abstract description 5
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 abstract description 4
- 229910052808 lithium carbonate Inorganic materials 0.000 abstract description 4
- 239000000243 solution Substances 0.000 description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 6
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 6
- 229910001416 lithium ion Inorganic materials 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000011259 mixed solution Substances 0.000 description 4
- 238000000746 purification Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000006258 conductive agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910032387 LiCoO2 Inorganic materials 0.000 description 1
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910013421 LiNixCoyMn1-x-yO2 Inorganic materials 0.000 description 1
- 229910013427 LiNixCoyMn1−x−yO2 Inorganic materials 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Secondary Cells (AREA)
- Primary Cells (AREA)
Abstract
The utility model provides a device for recycling lithium hexafluorophosphate in a battery, which comprises a treatment bin, a crushing module, an electrolyte leaching tank and a decompression distillation tank, wherein the crushing module and the electrolyte leaching tank are arranged in the treatment bin, the electrolyte leaching tank is positioned below the crushing module and is filled with leaching liquid, the electrolyte leaching tank is used for receiving battery fragments formed by crushing the crushing module and extracting electrolyte to form mixed liquid, and the decompression distillation tank is communicated with the electrolyte leaching tank to receive the mixed liquid, rectify and purify the mixed liquid and form lithium hexafluorophosphate crystals. Most of the existing processes convert lithium hexafluorophosphate into other forms of lithium salts (such as lithium carbonate) for recovery, and the lithium salts are required to be converted back into lithium hexafluorophosphate when in use, so that the process is complex and high in cost; the lithium hexafluorophosphate recovered by the utility model can be directly used after being purified, and the cost can be effectively reduced.
Description
Technical Field
The utility model relates to the technical field of lithium battery recovery processing, in particular to a device for recovering lithium hexafluorophosphate in a battery.
Background
The battery is one of the common power supply products of various electronic devices, and the lithium ion power battery mainly comprises a positive electrode, a negative electrode, a diaphragm, electrolyte and a shell. The positive electrode is composed of positive electrode materials (such as LiCoO2, liNixCoyMn1-x-yO2, liMn2O4 and LiFePO 4), a conductive agent, a binder (usually PVDF) and a foil; the negative electrode consists of a negative electrode material (usually graphite), a conductive agent, a binder and a copper foil; the diaphragm is composed of polyolefin substances such as Polyethylene (PE), polypropylene (PP) and the like; the electrolyte consists of lithium salt, an organic solvent and an additive; the shell is steel shell, aluminum alloy and aluminum plastic film. With the prominence of environmental problems and the increasing shortage of resources, recycling of waste lithium ion power batteries has been urgent.
At present, the recovery research and the industrialization application of the waste lithium ion battery are mainly focused on the recovery of the active material with high value of the anode. However, little research has been done on electrolyte recovery, so that there are few applications for electrolyte recovery in industry. However, the electrolyte is easy to volatilize and can generate bad smell, and lithium salt in the electrolyte is hydrolyzed to generate toxic arsenides, phosphides and fluorides, which are harmful to human bodies and the environment, so that the method similar to CN103825065B is generally adopted for recycling the electrolyte in the battery, the harm of the electrolyte is eliminated by a low-temperature freezing method, and the purpose of harmless treatment of the electrolyte is achieved by adding water into the electrolyte through distillation to prepare a catalyst for decomposing lithium hexafluorophosphate.
But it has the following disadvantages: the electrolyte accounts for about 12% of the total cost of the battery, only the innocent treatment causes resource waste, and the recovery cost is high.
Disclosure of Invention
In view of the above, the present utility model provides a device for recovering lithium hexafluorophosphate in a battery, which can recover useful substances in an electrolyte and reduce recovery processing cost.
In order to achieve the above object, the present utility model provides a device for recovering lithium hexafluorophosphate in a battery, comprising: the electrolyte leaching tank is arranged in the treatment bin, is positioned below the crushing module and is filled with leaching liquid, is used for receiving battery fragments formed by crushing the crushing module and extracting electrolyte to form mixed liquid, and the reduced pressure distillation tank is communicated with the electrolyte leaching tank to receive the mixed liquid, rectify and purify the mixed liquid and form lithium hexafluorophosphate crystals.
Further, the crushing module comprises a pair of crushing rollers and a driving part, wherein the crushing rollers are oppositely arranged, the crushing rollers are rotatably arranged on the inner wall of the treatment bin, and the driving part is connected with the crushing rollers.
Further, a plurality of protrusions are arranged on the surface of the crushing roller, and the protrusions on the crushing roller which are oppositely arranged are meshed with each other.
Further, the driving part comprises a driving gear, a driven gear and a driving motor, wherein the driving gear is connected with one crushing roller and the driving motor, and the driven gear is fixed with the other crushing roller shaft and meshed with the driving gear.
Further, the electrolyte leaching tank is a tank body with a non-cover upper end, the bottom of the electrolyte leaching tank is communicated with the reduced pressure distillation tank through a pipeline, and a leaching liquid inlet pipeline for placing leaching liquid is arranged on the electrolyte leaching tank.
Further, a filter member is arranged in the electrolyte leaching tank and is used for filtering battery fragments in the mixed liquid.
Further, the filter member includes a partition plate fixed in the electrolyte leaching tank 3 to divide the inside space of the electrolyte leaching tank into an upper portion and a lower portion, and a filter screen fitted on the partition plate to allow only the mixed solution to flow from the upper portion to the lower portion.
Further, a first feeding port capable of being opened and closed, a second feeding port capable of being opened and closed and a discharging port capable of being opened and closed are formed in the reduced pressure distillation tank, the first feeding port is connected with the electrolyte leaching tank through a pipeline, and the second feeding port is used for adding anhydrous HF gas into the reduced pressure distillation tank; the discharge port is used for discharging lithium hexafluorophosphate crystals.
Furthermore, the reduced pressure distillation tank is also provided with an openable and closable reflux port, and the reflux port is communicated with the leaching liquid inlet pipeline through a pipeline.
Further, the cross section of handling the storehouse is trapezoidal, broken module is fixed in handle the upper portion of storehouse 1, electrolyte leaching case is fixed in handle the lower part of storehouse, electrolyte leaching case covers the whereabouts scope of broken material of broken module.
Compared with the prior art, the device for recycling lithium hexafluorophosphate in the battery has the following beneficial effects:
the device has simple structure and low cost, does not need to undergo complex and numerous physical and chemical separation processes, and the crushed battery electrolyte directly enters a reduced pressure distillation device for separation and recovery after leaching; most of the existing processes convert lithium hexafluorophosphate into other forms of lithium salts (such as lithium carbonate) for recovery, and the lithium salts are required to be converted back into lithium hexafluorophosphate when in use, so that the process is complex and high in cost; the lithium hexafluorophosphate recovered by the utility model can be directly used after being purified, and the cost can be effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a device for recovering lithium hexafluorophosphate in a battery according to the present utility model;
fig. 2 is a schematic structural view of an apparatus for recovering lithium hexafluorophosphate in a battery according to another embodiment;
FIG. 3 is a schematic diagram of the mechanism of the crushing module of FIG. 1;
in the figure: 1-treatment bin, 2-crushing module, 21-crushing roller, 22-driving part, 221-driving gear, 222-driven gear, 223-driving motor, 3-electrolyte leaching tank, 4-decompression distillation tank, 41-first feed inlet, 42-second feed inlet, 43-discharge outlet, 44-return port, 5-filter element, 51-baffle plate and 52-filter screen.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1-3, the present utility model provides a device for recovering lithium hexafluorophosphate in a battery, comprising: the electrolyte leaching tank 3 is arranged in the treatment bin 1, the electrolyte leaching tank 3 is positioned below the crushing module 2 and is filled with leaching liquid, the electrolyte leaching tank 3 is used for receiving battery fragments formed by crushing the crushing module 2 and extracting electrolyte to form mixed liquid, and the reduced pressure distillation tank 4 is communicated with the electrolyte leaching tank 3 to receive the mixed liquid, rectify and purify the mixed liquid and form lithium hexafluorophosphate crystals.
The utility model is characterized in that an electrolyte leaching tank 3 and a reduced pressure distillation tank 4 are arranged in a treatment bin 1, leaching liquid is filled in the electrolyte leaching tank 3, the electrolyte leaching tank 3 receives battery fragments formed by crushing of a crushing module 2 and extracts electrolyte to form mixed liquid, and the reduced pressure distillation tank 4 is communicated with the electrolyte leaching tank 3 to receive the mixed liquid, rectify and purify the mixed liquid and form recyclable lithium hexafluorophosphate crystals.
The device has simple structure and low cost, does not need to undergo complex and numerous physical and chemical separation processes, and the crushed battery electrolyte directly enters a reduced pressure distillation device for separation and recovery after leaching; most of the existing processes convert lithium hexafluorophosphate into other forms of lithium salts (such as lithium carbonate) for recovery, and the lithium salts are required to be converted back into lithium hexafluorophosphate when in use, so that the process is complex and high in cost; the lithium hexafluorophosphate recovered by the utility model can be directly used after being purified, and the cost can be effectively reduced.
Further, the cross section of the treatment bin 1 is trapezoidal, the crushing module 2 is fixed on the upper portion of the treatment bin 1, the electrolyte leaching tank 3 is fixed on the lower portion of the treatment bin 1, and the electrolyte leaching tank 3 covers the falling range of crushed materials of the crushing module 2. The trapezoid cross section of the treatment bin 1 is designed to be aimed at enabling fragments to splash when the crushing module 2 is used for crushing, and a large electrolyte leaching tank 3 is arranged below the crushing module 2 and can comprehensively receive the splashed fragments.
Further, the bottom of the treatment bin 1 is provided with casters 11, so that the treatment bin 1 can be moved conveniently.
Further, the crushing module 2 includes a pair of oppositely disposed crushing rollers 21 and a driving member 22, the crushing rollers 21 are rotatably disposed on the inner wall of the treatment chamber 1, and the driving member 22 is connected to the crushing rollers 21 to drive the pair of crushing rollers 21 to rotate relatively.
Further, a plurality of protrusions are arranged on the surface of the crushing roller 21, and the protrusions on the opposite crushing roller 21 are engaged with each other. When the crushing roller 21 rotates, the protrusions can press and cut the battery, so that the battery is crushed.
Further, the driving part 22 includes a driving gear 221, a driven gear 222, and a driving motor 223, the driving gear 221 is connected to one of the crushing rolls 21 and the driving motor 223, and the driven gear 222 is axially fixed to the other of the crushing rolls 21 and is engaged with the driving gear 221. The driving motor 223 drives the two crushing rollers 21 to rotate relatively, so as to realize crushing.
Specifically, the electrolyte leaching tank 3 is a tank body with a non-cover upper end, the bottom of the electrolyte leaching tank 3 is communicated with the reduced pressure distillation tank 4 through a pipeline, and a leaching liquid inlet pipeline for placing leaching liquid is arranged on the electrolyte leaching tank 3.
Further, a filter element 5 is disposed in the electrolyte leaching tank 3, and the filter element 5 is used for filtering the battery fragments in the mixed solution, so as to prevent the battery fragments from entering the reduced pressure distillation tank 4 along with the mixed solution.
In some possible embodiments, the filtering element 5 comprises a partition plate 51 and a filtering screen 52, the partition plate 51 is fixed in the electrolyte leaching tank 3 to divide the internal space of the electrolyte leaching tank 3 into an upper part and a lower part, the filtering screen 52 is embedded on the partition plate 51, and the filtering screen 52 only allows the mixed liquor to flow from the upper part to the lower part, so that filtering is realized.
In other possible embodiments, the filter element 5 comprises a sieve box made of a sieve, which is movably placed in the electrolyte leaching tank 3, said sieve box allowing only the mixed liquor to flow through.
Further, the leaching solution is one or a mixture of more of ethylene carbonate, propylene carbonate, diethyl carbonate, dimethyl carbonate, methyl ethyl carbonate and tetrahydrofuran.
Further, a first openable and closable feed port 41, a second openable and closable feed port 42, and an openable and closable discharge port 43 are provided on the vacuum distillation tank 4, wherein the first feed port 41 is connected with the electrolyte leaching tank 3 through a pipeline, and the second feed port 42 is used for adding anhydrous HF gas into the vacuum distillation tank 4; the discharge port 43 is used for discharging lithium hexafluorophosphate crystals. The mixed solution in the electrolyte leaching tank 3 is sent to the reduced pressure distillation tank 4 for rectification and purification, and distilled in a state of being introduced with anhydrous HF gas, so that lithium hexafluorophosphate crystals with high purity are obtained, and discharged from the discharge port 43.
Further, the reduced pressure distillation tank 4 is further provided with an openable and closable reflux port 44, and the reflux port 44 is communicated with the leaching solution inlet pipeline through a pipeline. After lithium hexafluorophosphate crystals are discharged through the discharge port 43, the leaching solution obtained after distillation and condensation is opened to the reflux port 44, and the leaching solution can be reused for leaching of the broken battery.
When the lithium ion battery crushing device is used, a discharged battery is placed above the treatment bin 1, the driving motor 223 is started, by utilizing the characteristic that the driving gear 221 and the driven gear 222 are meshed with each other, then a pair of crushing rollers 21 are driven to rotate relatively, so that the lithium ion battery is crushed, crushed materials of the crushed battery fall into the electrolyte leaching tank 3, a leaching solution inlet pipeline is opened, the leaching solution enters the electrolyte leaching tank 3, residual electrolyte in the crushed battery enters the leaching solution under the extraction action of the leaching solution, after the electrolyte is soaked for a certain time, the first feeding port 41 is opened, solid materials such as a pole piece, a diaphragm and the like cannot pass through the filter piece 5 due to the volume, the liquid is directly discharged and is sent to the decompression distillation tank 4 for rectification and purification, the lithium ion battery is distilled under the state of being filled with anhydrous HF gas, the lithium hexafluorophosphate crystal with high purity is obtained, and part of the leaching solution obtained after distillation and condensation is recycled, and part of the leaching solution is reused for the leaching of the crushed materials of the battery.
The utility model is provided with an electrolyte leaching tank and a decompression distillation tank in the treatment bin, wherein the electrolyte leaching tank is filled with leaching liquid, the electrolyte leaching tank receives battery fragments formed by crushing the crushing module and extracts electrolyte to form mixed liquid, and the decompression distillation tank is communicated with the electrolyte leaching tank to receive the mixed liquid and carry out rectification purification to form recyclable lithium hexafluorophosphate crystals, and the lithium hexafluorophosphate crystal has the following advantages:
1. the device has simple structure and low cost, does not need to undergo complex and numerous physical and chemical separation processes, and the crushed battery electrolyte directly enters a reduced pressure distillation device for separation and recovery after leaching;
2. the crushed battery directly enters the leaching device without arranging a conveying device, so that the phenomena of volatilization of electrolyte, water splitting of lithium salt and generation of HF (hydrogen fluoride) caused by the conveying process are reduced;
3. most of the existing processes convert lithium hexafluorophosphate into other forms of lithium salts (such as lithium carbonate) for recovery, and the lithium hexafluorophosphate recovered by the process can be directly used after being purified, so that the efficiency is improved and the cost is saved;
4. the part of the leaching liquid after reduced pressure distillation is refluxed to a leaching tank to carry out leaching again, so that the cost caused by solvent use is reduced;
5. the scheme plays a positive role in reducing the production cost of the battery, saving resources and protecting the environment.
The above-described embodiments of the present utility model do not limit the scope of the present utility model. Any other corresponding changes and modifications made according to the technical idea of the present utility model shall be included in the protection scope of the present utility model.
Claims (10)
1. An apparatus for recovering lithium hexafluorophosphate in a battery, comprising:
the electrolyte leaching tank is arranged in the treatment bin, is positioned below the crushing module and is filled with leaching liquid, is used for receiving battery fragments formed by crushing the crushing module and extracting electrolyte to form mixed liquid, and the reduced pressure distillation tank is communicated with the electrolyte leaching tank to receive the mixed liquid, rectify and purify the mixed liquid and form lithium hexafluorophosphate crystals.
2. The apparatus for recovering lithium hexafluorophosphate from a battery as claimed in claim 1, wherein:
the crushing module comprises a pair of crushing rollers and a driving part, wherein the crushing rollers are oppositely arranged, the crushing rollers are rotatably arranged on the inner wall of the treatment bin, and the driving part is connected with the crushing rollers.
3. The apparatus for recovering lithium hexafluorophosphate in a battery as claimed in claim 2, wherein:
the surface of the crushing roller is provided with a plurality of bulges, and the bulges on the crushing roller which are oppositely arranged are mutually meshed.
4. The apparatus for recovering lithium hexafluorophosphate from a battery as claimed in claim 3, wherein:
the driving part comprises a driving gear, a driven gear and a driving motor, wherein the driving gear is connected with one crushing roller and the driving motor, and the driven gear is fixed with the other crushing roller shaft and meshed with the driving gear.
5. The apparatus for recovering lithium hexafluorophosphate from a battery as claimed in claim 1, wherein:
the electrolyte leaching tank is a tank body with a non-cover upper end, the bottom of the electrolyte leaching tank is communicated with the reduced pressure distillation tank through a pipeline, and a leaching liquid inlet pipeline for placing leaching liquid is arranged on the electrolyte leaching tank.
6. The apparatus for recovering lithium hexafluorophosphate from a battery as claimed in claim 5, wherein:
a filter piece is arranged in the electrolyte leaching box and is used for filtering battery fragments in the mixed liquid.
7. The apparatus for recovering lithium hexafluorophosphate from a battery as defined in claim 6, wherein:
the filter piece comprises a baffle plate and a filter screen, wherein the baffle plate is fixed in the electrolyte leaching tank, the inner space of the electrolyte leaching tank is divided into an upper part and a lower part, the filter screen is embedded on the baffle plate, and the filter screen only allows mixed liquid to flow from the upper part to the lower part.
8. The apparatus for recovering lithium hexafluorophosphate from a battery as claimed in claim 5, wherein:
the vacuum distillation tank is provided with a first feeding port capable of being opened and closed, a second feeding port capable of being opened and closed and a discharging port capable of being opened and closed, the first feeding port is connected with the electrolyte leaching tank through a pipeline, and the second feeding port is used for adding anhydrous HF gas into the vacuum distillation tank; the discharge port is used for discharging lithium hexafluorophosphate crystals.
9. The apparatus for recovering lithium hexafluorophosphate from a battery as claimed in claim 8, wherein:
the vacuum distillation tank is also provided with an openable reflux port, and the reflux port is communicated with the leaching liquid inlet pipeline through a pipeline.
10. The apparatus for recovering lithium hexafluorophosphate from a battery as claimed in claim 1, wherein:
the section of the treatment bin is trapezoid, the crushing module is fixed on the upper portion of the treatment bin, the electrolyte leaching box is fixed on the lower portion of the treatment bin, and the electrolyte leaching box covers the falling range of crushed materials of the crushing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321138396.7U CN219721933U (en) | 2023-05-09 | 2023-05-09 | Device for recycling lithium hexafluorophosphate in battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321138396.7U CN219721933U (en) | 2023-05-09 | 2023-05-09 | Device for recycling lithium hexafluorophosphate in battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219721933U true CN219721933U (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321138396.7U Active CN219721933U (en) | 2023-05-09 | 2023-05-09 | Device for recycling lithium hexafluorophosphate in battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219721933U (en) |
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2023
- 2023-05-09 CN CN202321138396.7U patent/CN219721933U/en active Active
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