CN117551875B - Lithium iron phosphate battery powder recycling and leaching device and application method thereof - Google Patents
Lithium iron phosphate battery powder recycling and leaching device and application method thereof Download PDFInfo
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- CN117551875B CN117551875B CN202311284318.2A CN202311284318A CN117551875B CN 117551875 B CN117551875 B CN 117551875B CN 202311284318 A CN202311284318 A CN 202311284318A CN 117551875 B CN117551875 B CN 117551875B
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- 238000002386 leaching Methods 0.000 title claims abstract description 148
- GELKBWJHTRAYNV-UHFFFAOYSA-K lithium iron phosphate Chemical compound [Li+].[Fe+2].[O-]P([O-])([O-])=O GELKBWJHTRAYNV-UHFFFAOYSA-K 0.000 title claims abstract description 31
- 239000000843 powder Substances 0.000 title claims abstract description 27
- 238000004064 recycling Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 104
- 239000007788 liquid Substances 0.000 claims abstract description 84
- 238000005086 pumping Methods 0.000 claims abstract description 61
- 238000001914 filtration Methods 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 18
- 239000007787 solid Substances 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 39
- 238000003825 pressing Methods 0.000 claims description 38
- 238000010992 reflux Methods 0.000 claims description 24
- 238000004321 preservation Methods 0.000 claims description 14
- 239000000706 filtrate Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052744 lithium Inorganic materials 0.000 abstract description 8
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 6
- 229910001386 lithium phosphate Inorganic materials 0.000 description 5
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000011344 liquid material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011343 solid material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010926 waste battery Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
- C22B26/12—Obtaining lithium
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of lithium battery materials, in particular to a lithium iron phosphate battery powder recovery leaching device and a use method thereof, comprising a cylindrical leaching kettle, wherein a central discharging pipe is arranged at the center of the bottom of the cylindrical leaching kettle, discharging openings are arranged at the upper end and the lower end of the central discharging pipe, and the lithium iron phosphate battery powder recovery leaching device further comprises: and the central return pipe is vertically arranged at the center of the interior of the cylindrical leaching kettle. According to the invention, the cylindrical leaching kettle is used for recycling and leaching lithium iron phosphate battery powder, after leaching is completed, the central return pipe moves downwards to enable the bottom end opening and the discharge opening to be mutually sealed and embedded, at the moment, liquid is pumped in from the top end opening and pumped downwards through the rotation of the pumping impeller, the liquid is filtered through the circular filter disc in the middle of the discharge opening and then is discharged along the central discharge pipe, the flow pressure and the discharge efficiency of the liquid can be improved through the pressurizing and pumping of the pumping impeller, the liquid separation solid can be conveniently discharged as soon as possible for next filtering, and the integral recycling and leaching efficiency of the device is improved.
Description
Technical Field
The invention relates to the technical field of lithium battery materials, in particular to a lithium iron phosphate battery powder recycling and leaching device and a use method thereof.
Background
The lithium iron phosphate battery mainly uses lithium iron phosphate as a positive electrode material, and after the service life of the lithium iron phosphate battery is reached, the lithium iron phosphate battery is generally required to be disassembled and recycled, and valuable lithium iron phosphate powder in the waste battery is recycled, so that a leaching method is generally used for extracting lithium in the lithium iron phosphate powder at present.
The patent with the application number of CN202222076037.5 discloses a system for recycling lithium by a wet method of a waste ternary lithium battery, which comprises a crude lithium phosphate preparation module and a battery-level lithium carbonate preparation module, wherein the crude lithium phosphate preparation module consists of a lean lithium phosphate leaching solution collecting tank, a heater, a battery metal leaching reaction kettle, a No. 1 centrifugal machine, an oxalic acid coprecipitation reaction kettle, a No. 2 centrifugal machine, a rich lithium phosphate leaching solution collecting tank, a crude lithium phosphate reaction kettle, a No. 3 centrifugal machine and No. 1 water treatment equipment, and the battery-level lithium carbonate preparation module consists of a lithium/phosphorus separation reaction kettle, a No. 4 centrifugal machine, a purification reaction kettle, a No. 5 centrifugal machine, a lithium precipitation reaction kettle, a No. 6 centrifugal machine, a cleaning and drying device and a No. 2 water treatment equipment.
However, since the extraction of lithium by the leaching method generally requires multiple times of leaching, after the single leaching is completed, the leaching solution needs to be discharged, and the remaining solid matters are collected by filtration to be filtered for the next time, and the filtration is generally performed by using a filter screen, the leaching solution is generally naturally discharged downwards through the gravity by filtering through the filter screen, and the solid matters are gradually deposited on the filter screen along with the leaching solution, so that the filtration efficiency is easily reduced, the leaching solution is difficult to discharge, and the overall leaching treatment efficiency is reduced.
Disclosure of Invention
Accordingly, the invention aims to provide a lithium iron phosphate battery powder recovery leaching device and a use method thereof, which are used for solving the problems that the prior leaching equipment is used for filtering after one-time leaching, the filtering solids are naturally downwards filtered and discharged through the filtering screen by gravity, and the filtering solids are gradually deposited on the filtering screen to easily cause blockage, so that the filtering efficiency is reduced, the leaching liquid is difficult to discharge, and the overall leaching treatment efficiency is reduced.
Based on the above purpose, the invention provides a lithium iron phosphate battery powder recovery leaching device, which comprises a barrel type leaching kettle, wherein a central discharging pipe is arranged at the center of the bottom of the barrel type leaching kettle, discharging openings are formed in the upper end and the lower end of the central discharging pipe, and the device further comprises:
the central return pipe is vertically arranged at the center of the inside of the cylindrical leaching kettle, a central guide sleeve is arranged at the center of the top of the cylindrical leaching kettle, the upper end of the central return pipe is in sliding connection with the cylindrical leaching kettle through the central guide sleeve, the bottom end of the central return pipe is provided with a bottom end opening, and the upper side of the side wall of the central return pipe is provided with a top end opening;
the pumping impeller is embedded in the central return pipe and positioned at the lower side of the top end opening, and the shaft end of the pumping impeller is connected with a central driving shaft;
The circular filter disc is embedded in the middle of the discharge opening, and a central sliding sleeve is arranged at the center of the circular filter disc;
the lifting sealing plate is embedded and slidingly arranged on the inner side of the central discharging pipe, a central traction rod is connected with the center of the top surface of the lifting sealing plate, the top end of the central traction rod penetrates through the circular filter disc through a central sliding sleeve to be connected with a central return pipe, and the central return pipe drives the lifting sealing plate to synchronously move up and down through the central traction rod;
The annular piston disc is embedded and slidingly arranged in the cylindrical leaching kettle, the inner side and the outer side of the annular piston disc are respectively attached to the inner wall of the cylindrical leaching kettle and the outer side of the central discharging pipe, and the bottom of the cylindrical leaching kettle is connected with a pressure guide conveying pipe.
Further, the top connection of center back flow is provided with the lift link frame, the outside of lift link frame is encircled and is provided with hydraulic telescoping rod, hydraulic telescoping rod with center back flow looks parallel arrangement each other, the centre of lift link frame is provided with the pumping motor, the axle head of pumping motor with the top interconnect of center drive shaft.
Further, the side wall top connection of center back flow is provided with the slope inlet pipe, the outer end connection of slope inlet pipe is provided with vertical inlet pipe, the outside nested slip of vertical inlet pipe is provided with fixed inlet pipe, fixed inlet pipe with barrel-type leaching kettle fixed connection, vertical inlet pipe with the mutual parallel arrangement of center back flow.
Further, circular filter disc gomphosis slip set up in the inboard of center discharging pipe, be provided with the locking draw-in groove in the middle of the lateral wall of circular filter disc, the inner wall top level of center discharging pipe is provided with horizontal locking sleeve, the inside nested slip of horizontal locking sleeve is provided with the elasticity locking pin, the elasticity locking pin with the size is mutually supported between the locking draw-in groove, circular filter disc passes through the elasticity locking pin embedding locking draw-in groove is fixed at center discharging pipe top, the rear side of elasticity locking pin is provided with the unblock electro-magnet, the inner wall top of center discharging pipe is provided with spacing snap ring, spacing snap ring restriction circular filter disc upwards slides.
Further, the below connection of center discharging pipe is provided with rotatory regulation pipe, the intercommunication interface has been seted up to the lateral wall of rotatory regulation pipe, and the size is mutually supported between bottom opening and the ejection of compact opening, and bottom opening and the mutual closeness gomphosis of ejection of compact opening on center discharging pipe top when the center back flow moves down, and simultaneously lift closing plate moves down to the below of intercommunication interface in step, and bottom opening and the ejection of compact opening on center discharging pipe top separate each other when the center back flow moves upwards and open, and simultaneously lift closing plate moves up to the top of intercommunication interface and the mutual laminating of circular filter disc bottom face in step.
Further, the top of rotatory regulation pipe is provided with the swivelling joint ring, rotatory regulation pipe passes through the swivelling joint ring with the bottom rotation of center discharging pipe is connected, the outside nestification of rotatory regulation pipe is provided with fixed nested pipe, fixed nested pipe with center discharging pipe fixed connection, symmetrical connection is provided with filtrate discharging pipe and filter residue discharging pipe on the lateral wall of fixed nested pipe, rotatory regulation pipe is through rotating the orientation position of adjusting the intercommunication interface to the inner opening intercommunication of regulation intercommunication interface and filtrate discharging pipe or filter residue discharging pipe each other.
Further, the outside of swivelling joint ring encircles and is provided with rotatory fluted disc, rotatory fluted disc's outside meshing is provided with adjusting gear, adjusting gear's axle head is provided with accommodate motor.
Furthermore, the top surface of annular piston dish is the toper structure that sets up to central discharging pipe direction slope.
Further, the outside of a barrel type leaching kettle is surrounded and provided with a heat preservation jacket, the inner side of the heat preservation jacket is embedded and slidingly provided with a pressing piston plate, the middle of the pressing piston plate is provided with a pressing screw sleeve, the inner side of the pressing screw sleeve is embedded and provided with a pressing screw rod, the shaft end of the pressing screw rod is connected and provided with a pressing motor, the top of the heat preservation jacket is provided with an air pressure balance port, and the bottom of the heat preservation jacket is mutually communicated with the inner bottom of the barrel type leaching kettle through a pressure guide conveying pipe.
The application method of the lithium iron phosphate battery powder recovery leaching device comprises the following steps:
adding raw materials into a cylindrical leaching kettle for leaching, keeping a central return pipe arranged in the cylindrical leaching kettle in an upper state, at the moment, separating a bottom end opening at the bottom end of the central return pipe from a discharge opening at the upper end of a central discharge pipe, and at the moment, pulling a lifting sealing plate by a central traction rod to enable the lifting sealing plate to be embedded into the central discharge pipe so as to keep the central discharge pipe closed, wherein the central return pipe is internally embedded and rotated to be provided with a pumping impeller to rotate, liquid in the cylindrical leaching kettle is pumped in through the bottom end opening at the bottom of the central return pipe and is upwards conveyed along the central return pipe to be discharged through the top end opening, so that the liquid in the cylindrical leaching kettle is continuously and circularly stirred, the central return pipe is downwards moved after the leaching is completed, the bottom end opening of the central return pipe is mutually embedded and sealed with the discharge opening at the upper end of the central discharge pipe, and simultaneously the lifting sealing plate is synchronously downwards moved away from the central discharge pipe, at the moment, the liquid is reversely rotated by the pumping impeller to be pumped in through the top end opening and downwards, the circular filter disc in the middle of the discharge opening is enabled to be discharged along the central discharge pipe after the filtering, the pumping impeller is conveyed, and simultaneously the pressurizing gas is conveyed through the pressure guide conveying pipe so as to push the annular piston disc to upwards move, the liquid between the central discharge pipe and the cylindrical leaching kettle to be pushed upwards, the liquid to be discharged through the pumping pump the top opening, the filtering efficiency, the filtering liquid and the filtering liquid is difficult to be discharged and the sedimentation and the filtering liquid.
The invention has the beneficial effects that: according to the lithium iron phosphate battery powder recovery leaching device, the lithium iron phosphate battery powder is recovered and leached through the cylindrical leaching kettle, the pumping impeller is arranged in the central return pipe in the cylindrical leaching kettle in a jogged and rotating mode, internal liquid can be pumped in through the bottom end opening at the bottom of the central return pipe through the rotation of the pumping impeller, the internal liquid is upwards conveyed and discharged through the top end opening along the central return pipe, so that the internal liquid is continuously stirred circularly, the recovery leaching efficiency is improved, the upper end of the central return pipe is in sliding connection with the cylindrical leaching kettle through the central guide sleeve, the central return pipe moves downwards after the leaching, the bottom end opening and the discharge opening are mutually sealed and jogged, liquid is pumped in through the top end opening through the reverse rotation of the pumping impeller and pumped downwards, the liquid is discharged through the pressurizing pumping of the pumping impeller along the central discharge pipe after being filtered through the circular filter disc in the middle of the discharge opening, the flowing pressure and the discharging efficiency of the liquid can be improved, the situation that the filtered solid is difficult to be discharged after being gradually deposited on the filter screen is avoided, the leaching liquid is conveniently discharged for separating the solid for filtering the next time, and the whole device is favorable for improving the recovery leaching efficiency.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only of the invention and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the internal structure of a cartridge type leaching tank according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the front structure of a cartridge type leaching tank according to an embodiment of the present invention;
FIG. 3 is a schematic view of a longitudinal cross-sectional structure of an embodiment of the present invention;
FIG. 4 is a schematic structural view of a cartridge type leaching tank according to an embodiment of the present invention;
FIG. 5 is a schematic view of the bottom structure of a cartridge type leaching tank according to an embodiment of the present invention;
FIG. 6 is a schematic view showing the internal structure of a thermal insulation jacket according to an embodiment of the present invention;
FIG. 7 is a schematic view of the structure of a center return tube according to an embodiment of the present invention;
FIG. 8 is a schematic view of a center tap in accordance with an embodiment of the present invention.
Marked in the figure as:
1. A cylindrical leaching kettle; 101. a center guide sleeve; 102. tilting the feed tube; 103. a vertical feed pipe; 104. fixing a feeding pipe; 2. a central return pipe; 201. an opening at the bottom end; 202. an opening at the top end; 203. lifting the linkage frame; 204. a hydraulic telescopic rod; 205. a central traction rod; 206. lifting the sealing plate; 3. a pumping impeller; 301. a central drive shaft; 302. a pumping motor; 4. a central discharge pipe; 401. a discharge opening; 402. a limiting snap ring; 5. a circular filter disc; 501. a central sliding sleeve; 502. locking the clamping groove; 503. a horizontal locking sleeve; 504. an elastic locking pin; 505. unlocking the electromagnet; 6. rotating the adjusting tube; 601. a communication interface; 602. rotating the connecting ring; 603. rotating the fluted disc; 604. an adjusting gear; 605. adjusting a motor; 7. fixing the embedded pipe; 701. a filtrate discharging pipe; 702. a filter residue discharging pipe; 8. an annular piston disc; 801. a pressure guiding conveying pipe; 9. a heat preservation jacket; 901. pressing the piston plate; 902. pressing the threaded sleeve; 903. pressing the screw rod; 904. a pressing motor; 905. an air pressure balancing port.
Detailed Description
The present invention will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present invention more apparent.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 8, a leaching device for recovering lithium iron phosphate battery powder comprises a barrel type leaching kettle 1, a central discharging pipe 4 is arranged at the center of the bottom of the barrel type leaching kettle 1, discharging openings 401 are respectively arranged at the upper end and the lower end of the central discharging pipe 4, and the leaching device further comprises:
The central return pipe 2 is vertically arranged at the inner center of the cylindrical leaching kettle 1, a central guide sleeve 101 is arranged at the center of the top of the cylindrical leaching kettle 1, the upper end of the central return pipe 2 is in sliding connection with the cylindrical leaching kettle 1 through the central guide sleeve 101, the bottom end of the central return pipe 2 is provided with a bottom end opening 201, and the upper side of the side wall of the central return pipe 2 is provided with a top end opening 202;
The pumping impeller 3 is embedded in the central return pipe 2 and positioned at the lower side of the top end opening 202, and the shaft end of the pumping impeller 3 is connected with a central driving shaft 301;
The circular filter disc 5 is embedded in the middle of the discharge opening 401, and a central sliding sleeve 501 is arranged at the center of the circular filter disc 5;
The lifting sealing plate 206 is embedded and slidingly arranged on the inner side of the central discharging pipe 4, a central traction rod 205 is connected and arranged at the center of the top surface of the lifting sealing plate 206, the top end of the central traction rod 205 penetrates through the circular filter disc 5 through the central sliding sleeve 501 and is connected with the central return pipe 2, and the central return pipe 2 drives the lifting sealing plate 206 to synchronously move up and down through the central traction rod 205;
The annular piston disc 8 is embedded and slidingly arranged in the cylindrical leaching kettle 1, the inner side and the outer side of the annular piston disc 8 are respectively attached to the inner wall of the cylindrical leaching kettle 1 and the outer side of the central discharging pipe 4, and the bottom of the cylindrical leaching kettle 1 is connected with a pressure guide conveying pipe 801.
In the embodiment, the device recovers and leaches lithium iron phosphate battery powder through the cylindrical leaching kettle 1, the upper end of the central return pipe 2 is in sliding connection with the cylindrical leaching kettle 1 through the central guide sleeve 101, when raw materials are added into the cylindrical leaching kettle 1 for leaching, the central return pipe 2 arranged inside the cylindrical leaching kettle 1 is in an upper state, at the moment, the bottom end opening 201 at the bottom end of the central return pipe is mutually separated from the discharge opening 401 at the upper end of the central discharge pipe 4, and at the moment, the central return pipe 2 pulls the lifting sealing plate 206 through the central traction rod 205, so that the lifting sealing plate 206 is embedded into the central discharge pipe 4 to keep the central discharge pipe to be closed, and the inner part of the central return pipe 2 is embedded and rotatably provided with a pumping impeller 3 for rotating, so that liquid inside the cylindrical leaching kettle 1 can be pumped in from the bottom end opening 201 at the bottom of the central return pipe 2 and is upwards conveyed and discharged from the top end opening 202 along the central return pipe 2, so that the internal liquid is continuously and circularly stirred, the recovery leaching efficiency is improved, the central return pipe 2 can be downwards moved after the leaching is finished, the bottom end opening 201 of the central return pipe is mutually embedded and sealed with the discharge opening 401 at the upper end of the central discharge pipe 4, the lifting sealing plate 206 is synchronously downwards moved to be separated from the central discharge pipe 4, at the moment, the liquid can be reversely rotated by the pumping impeller 3 to be pumped in and downwards pumped by the top end opening 202, the liquid is filtered by the circular filter disc 5 in the middle of the discharge opening 401 and then is discharged along the central discharge pipe 4, the flow pressure and the discharge efficiency of the liquid can be improved by the pressurizing pumping of the pumping impeller 3, the difficulty in discharging the leaching liquid after the filtered solid is gradually deposited on the filter screen is avoided, the next filtering is conveniently carried out by discharging the liquid separation solid as soon as possible, the whole recovery leaching efficiency of the device is improved, and pressurized gas or liquid can be conveyed through the pressure guide conveying pipe 801 while the pumping impeller 3 is conveyed so as to push the annular piston disc 8 to move upwards, so that the liquid between the central discharging pipe 4 and the cylindrical leaching kettle 1 is pushed upwards, and the liquid enters the central discharging pipe 4 through the top end opening 202 to be pumped.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, preferably, the device stirs liquid during leaching through the central return pipe 2, after leaching is completed, the liquid is pressurized and filtered, and the central return pipe 2 is moved up and down to switch working states through the connection of the top end of the central return pipe 2, the lifting linkage frame 203 is arranged through a plurality of hydraulic telescopic rods 204 which are driven to move up and down by the outer side surrounding connection of the lifting linkage frame 203, and then the central return pipe 2 is driven to move up and down to switch working states, meanwhile, a pumping motor 302 is arranged in the middle of the lifting linkage frame 203, the shaft ends of the pumping motor 302 are connected with the top end of the central driving shaft 301 so as to drive the pumping impeller 3 to rotate, the side wall top end of the central return pipe 2 is connected with an inclined feed pipe 102, the outer end of the inclined feed pipe 102 is connected with a vertical feed pipe 103, and the outer side of the vertical feed pipe 103 is in a nested sliding manner provided with a fixed feed pipe 104, and raw materials can be delivered into the central return pipe 2 through the fixed feed pipe 104, the vertical feed pipe 103 and the inclined feed pipe 102 are convenient for preliminary mixing and stirring in the central return pipe 2.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, preferably, the device pumps liquid into the top end opening 202 of the central backflow pipe 2 and pumps the liquid downwards through the rotation of the pumping impeller 3, so that the liquid is filtered by the circular filter disc 5 in the middle of the discharging opening 401 and then is discharged along the central discharging pipe 4, the circular filter disc 5 is detachably embedded and arranged on the inner side of the central discharging pipe 4, a locking clamping groove 502 is arranged in the middle of the side wall of the circular filter disc 5, a horizontal locking sleeve 503 is horizontally arranged on the top end of the inner wall of the central discharging pipe 4, an elastic locking pin 504 is nested and slidingly arranged on the inner side of the horizontal locking sleeve 503, the elastic locking pin 504 and the locking clamping groove 502 are mutually matched in size, the circular filter disc 5 is embedded into the top end of the central discharging pipe 4 through the elastic locking pin 504, so that the liquid is conveniently discharged, an unlocking electromagnet 505 is arranged on the rear side of the circular filter disc 5, at the moment, the circular filter disc 5 can be attracted by the unlocking electromagnet 505 to move the locking clamping groove 502 backwards, the circular filter disc 5 is separated from the central filtering disc 4 and is slidingly moved upwards, the sealing plate 206 is conveniently to be lifted upwards, the circular filter disc 2 is simultaneously, and the solid is conveniently discharged upwards and is conveniently and is more tightly and synchronously cleaned by the lifting and is positioned to the sealing plate 2.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, preferably, the device discharges filtered liquid or solid material through the central discharging pipe 4, the rotary adjusting pipe 6 is connected and arranged below the central discharging pipe 4, the side wall of the rotary adjusting pipe 6 is provided with the communication interface 601, when the central reflux pipe 2 moves downwards, the bottom opening 201 and the discharge opening 401 at the top end of the central discharging pipe 4 are mutually sealed and embedded, and meanwhile, the lifting and sealing plate 206 synchronously moves downwards to the lower side of the communication interface 601, at this time, the liquid material can be conveyed to the rotary adjusting pipe 6 through the central discharging pipe 4 and further conveyed and discharged along the communication interface 601, and when the central reflux pipe 2 moves upwards, the bottom opening 201 and the discharge opening 401 at the top end of the central discharging pipe 4 are mutually separated and opened, and meanwhile, the lifting and sealing plate 206 synchronously moves upwards to the upper side of the communication interface 601 and the bottom surface of the circular filter disc 5 are mutually attached, at this time, the central discharging pipe 4 is sealed, the liquid is prevented from being discharged from the central reflux pipe 2, and leaching and recycling work is facilitated.
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8, preferably, the device discharges filtered liquid or solid materials through the central discharging pipe 4, the rotary adjusting pipe 6 is rotationally connected with the bottom end of the central discharging pipe 4 through the rotary connecting ring 602, the outer side of the rotary adjusting pipe 6 is nested to be provided with a fixed nested pipe 7, the fixed nested pipe 7 is fixedly connected with the central discharging pipe 4, the side wall of the fixed nested pipe 7 is symmetrically connected with a filtrate discharging pipe 701 and a filter residue discharging pipe 702, a rotary fluted disc 603 is circumferentially arranged on the outer side of the rotary connecting ring 602, an adjusting gear 604 is arranged on the outer side of the rotary fluted disc 603 in a meshed manner, an adjusting motor 605 is arranged at the shaft end of the adjusting gear 604, the rotary adjusting pipe 6 can be driven to rotate through the adjusting gear 604, and the rotary adjusting pipe 6 is rotationally adjusted to be mutually communicated with the inner end opening of the filtrate discharging pipe 701 or the filter residue discharging pipe 702 through rotation, thus when the central discharging pipe 4 discharges filtered liquid, the rotary adjusting pipe 6 is rotationally communicated with the filtrate discharging pipe 701, the filter residue discharging pipe 702 needs to be mutually communicated with the filter residue discharging pipe 702 through the filter residue discharging pipe 702, and the filter residue can be conveniently and rapidly switched.
As shown in fig. 1,2, 3, 4, 5, 6, 7 and 8, preferably, the device pushes the liquid between the central discharging pipe 4 and the barrel type leaching kettle 1 upwards through the upward movement of the annular piston disc 8, so that the liquid enters the central discharging pipe 4 for pumping through the top end opening 202, the top surface of the annular piston disc 8 is of a conical structure obliquely arranged towards the central discharging pipe 4, so that the internal liquid is completely discharged, residues are avoided, meanwhile, the outer side of the barrel type leaching kettle 1 is circumferentially provided with a heat-insulating jacket 9, the inner side of the heat-insulating jacket 9 is embedded and slidingly provided with a pressing piston plate 901, the middle of the pressing piston plate 901 is provided with a pressing screw sleeve 902, the inner side of the pressing screw sleeve 902 is embedded and provided with a pressing screw 903, the shaft end of the pressing screw 903 is connected with a pressing motor 904, the top of the heat-insulating jacket 9 is provided with an air pressure balance port 905, the pressing motor 904 can drive the pressing piston plate 901 to move up and down through the pressing screw 903 and the pressing screw sleeve 902, the bottom of the heat preservation jacket 9 is mutually communicated with the inner bottom of the cylindrical leaching kettle 1 through the pressure guiding conveying pipe 801, meanwhile, the area below the pressing piston plate 901 of the heat preservation jacket 9 can be filled with pressure guiding gas, so that when the annular piston plate 8 is positioned at the bottom of the cylindrical leaching kettle 1, the pressing piston plate 901 is positioned at the top side of the heat preservation jacket 9, when the pressing piston plate 901 moves downwards, the pressure guiding gas in the heat preservation jacket 9 is pressed into the cylindrical leaching kettle 1 at the bottom of the annular piston plate 8 through the pressure guiding conveying pipe 801 to push the annular piston plate 8 to move upwards, and when the pressing piston plate 901 moves upwards, the pressure guiding gas in the cylindrical leaching kettle 1 is pumped into the heat preservation jacket 9 through the pressure guiding conveying pipe 801, so that the annular piston plate 8 is controlled to move up and down through the pressing piston plate 901, meanwhile, the heat-insulating jacket 9 is positioned at the outer side of the cylindrical leaching kettle 1, so that the hollow heat-insulating jacket 9 is convenient for providing heat insulation for the cylindrical leaching kettle 1, and the heat loss in the cylindrical leaching kettle 1 is reduced.
When in use, the corresponding pipelines of the device are connected, raw materials are delivered into the central reflux pipe 2 through the fixed feed pipe 104, the vertical feed pipe 103 and the inclined feed pipe 102, preliminary mixing and stirring are carried out in the central reflux pipe 2, and then the raw materials are further delivered into the cylindrical leaching kettle 1 for leaching, when the leaching recovery is carried out, the central reflux pipe 2 arranged in the cylindrical leaching kettle 1 is in an upper state, at the moment, the bottom end opening 201 at the bottom end of the central reflux pipe is mutually separated from the discharge opening 401 at the upper end of the central discharge pipe 4, at the moment, the central reflux pipe 2 pulls the lifting sealing plate 206 through the central traction rod 205, the lifting sealing plate 206 is embedded into the central discharge pipe 4 to keep the central reflux pipe 4 closed, the central reflux pipe 2 is internally embedded and rotatably provided with the liquid in the cylindrical leaching kettle 1 is pumped by the bottom end opening 201 at the bottom of the central reflux pipe 2 through the rotation of the pumping impeller 3, and the liquid in the liquid is continuously circulated and stirred by the upper end opening 202 and is discharged along the central return pipe 2, the recovery and leaching efficiency is improved, after leaching is completed, the regulating motor 605 drives the rotary regulating pipe 6 to rotate through the regulating gear 604 and the rotary fluted disc 603, the rotary regulating pipe 6 rotates to enable the communication interface 601 to be communicated with the filtrate discharging pipe 701, then the hydraulic telescopic rod 204 and the lifting linkage frame 203 drive the central return pipe 2 to move downwards, the lower end opening 201 of the central return pipe is mutually embedded and sealed with the discharging opening 401 at the upper end of the central discharging pipe 4, the lifting sealing plate 206 synchronously moves downwards and is separated from the central discharging pipe 4, at the moment, the liquid can be pumped in from the upper end opening 202 and pumped downwards through the reverse rotation of the pumping impeller 3, the liquid is filtered through the circular filter disc 5 in the middle of the discharging opening 401 and then is discharged along the central discharging pipe 4, by means of the pressurizing pumping of the pumping impeller 3, the flowing pressure and the discharging efficiency of liquid can be improved, the situation that the leachate is difficult to discharge after filtered solids are gradually deposited on the filter screen is avoided, and when the pumping impeller 3 is used for conveying, the pressing motor 904 drives the pressing piston plate 901 to move downwards through the pressing screw 903 and the pressing screw sleeve 902, the pressure-conducting gas in the heat-preserving jacket 9 is pressed into the cylindrical leaching kettle 1 at the bottom of the annular piston disc 8 through the pressure-conducting conveying pipe 801 so as to push the annular piston disc 8 to move upwards, the liquid between the central discharging pipe 4 and the cylindrical leaching kettle 1 is pushed upwards, the liquid enters the central discharging pipe 4 through the top opening 202 to be pumped, after the leached liquid is discharged, the central backflow pipe 2 is driven to move upwards through the hydraulic telescopic rod 204 and the lifting linkage frame 203, at the moment, the bottom opening 201 at the bottom end of the central backflow pipe 2 is separated from the discharging opening 401 at the upper end of the central discharging pipe 4, and at the moment, the central backflow pipe 2 pulls the lifting sealing plate 206 through the central traction rod 205, the lifting sealing plate 206 is embedded into the central discharging pipe 4 to keep the leachate, and then the central discharging pipe 4 is added again to continue to work.
The application method of the lithium iron phosphate battery powder recovery leaching device comprises the following steps:
Raw materials are added into a cylindrical leaching kettle 1 for leaching, a central return pipe 2 arranged in the cylindrical leaching kettle 1 is kept in an upper state, at the moment, a bottom end opening 201 at the bottom end of the central return pipe is mutually separated from a discharge opening 401 at the upper end of a central discharge pipe 4, at the moment, the central return pipe 2 pulls a lifting sealing plate 206 through a central traction rod 205, so that the lifting sealing plate 206 is embedded into the central discharge pipe 4 to keep the central discharge pipe 4 to be closed, a pumping impeller 3 is arranged in the central return pipe 2 in a jogged rotating way, liquid in the cylindrical leaching kettle 1 is pumped in through the bottom end opening 201 at the bottom of the central return pipe 2, the liquid is conveyed upwards along the central return pipe 2 to be discharged through a top end opening 202, the internal liquid is continuously and circularly stirred, the central return pipe 2 is downwards moved after leaching is finished, the bottom end opening 201 and the discharge opening 401 at the upper end of the central discharge pipe 4 are mutually jogged and sealed and connected, simultaneously, the lifting sealing plate 206 moves downwards synchronously to be separated from the central discharging pipe 4, liquid is pumped in from the top end opening 202 and pumped downwards through the reverse rotation of the pumping impeller 3, the liquid is filtered by the circular filter disc 5 in the middle of the discharging opening 401 and then is discharged along the central discharging pipe 4, pressurized gas is conveyed through the pressure guide conveying pipe 801 while the pumping impeller 3 conveys the liquid, the annular piston disc 8 is pushed to move upwards, the liquid between the central discharging pipe 4 and the cylindrical leaching kettle 1 is pushed upwards, the liquid enters the central discharging pipe 4 through the top end opening 202 to be pumped, the flowing pressure and the discharging efficiency of the liquid are improved through the pressurized pumping of the pumping impeller 3, and the problem that leachate is difficult to discharge after filtered solids are gradually deposited on the filter screen is avoided.
According to the lithium iron phosphate battery powder recovery leaching device provided by the invention, the lithium iron phosphate battery powder is recovered and leached through the cylindrical leaching kettle 1, the pumping impeller 3 is arranged in the central return pipe 2 in the cylindrical leaching kettle 1 in a jogged and rotated manner, internal liquid can be pumped in from the bottom end opening 201 at the bottom of the central return pipe 2 through the rotation of the pumping impeller 3 and is upwards conveyed along the central return pipe 2 to be discharged from the top end opening 202, so that the internal liquid is continuously and circularly stirred, the recovery leaching efficiency is improved, the upper end of the central return pipe 2 is in sliding connection with the cylindrical leaching kettle 1 through the central guide sleeve 101, the central return pipe 2 moves downwards after leaching, the bottom end opening 201 and the discharge opening 401 are mutually closed and jogged, at the moment, the liquid is pumped in from the top end opening 202 through the reverse rotation of the pumping impeller 3 and is downwards pumped, so that the liquid is discharged along the central discharge pipe 4 through the pressurizing and pumping of the pumping impeller 3 after being filtered through the circular filter disc 5 in the middle of the discharge opening 401, the flow pressure and the discharge efficiency of the liquid can be improved, the problem that the leaching liquid is difficult to be discharged after the filtered solid is gradually deposited on the filter screen is solved, the whole is conveniently filtered as soon as possible, and the recovery efficiency of the device is improved.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the invention (including the claims) is limited to these examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The present invention is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present invention should be included in the scope of the present invention.
Claims (9)
1. The utility model provides a lithium iron phosphate battery powder retrieves and leaches device, including barrel type leaching kettle (1), the bottom center department of barrel type leaching kettle (1) is provided with center discharging pipe (4), both ends all are provided with ejection of compact opening (401), its characterized in that still includes:
The central return pipe (2) is vertically arranged at the center of the inside of the cylindrical leaching kettle (1), a central guide sleeve (101) is arranged at the center of the top of the cylindrical leaching kettle (1), the upper end of the central return pipe (2) is in sliding connection with the cylindrical leaching kettle (1) through the central guide sleeve (101), the bottom end of the central return pipe (2) is provided with a bottom end opening (201), and the upper side of the side wall of the central return pipe (2) is provided with a top end opening (202);
The pumping impeller (3) is embedded in the central return pipe (2) and is positioned at the lower side of the top end opening (202), and the shaft end of the pumping impeller (3) is connected with a central driving shaft (301);
the circular filter disc (5) is embedded in the middle of the discharge opening (401), and a central sliding sleeve (501) is arranged at the center of the circular filter disc (5);
The lifting sealing plate (206) is embedded and slidingly arranged on the inner side of the central discharging pipe (4), a central traction rod (205) is connected and arranged at the center of the top surface of the lifting sealing plate (206), the top end of the central traction rod (205) penetrates through the circular filter disc (5) through a central sliding sleeve (501) and is connected with the central return pipe (2), and the central return pipe (2) drives the lifting sealing plate (206) to synchronously move up and down through the central traction rod (205);
The annular piston disc (8) is embedded and slidingly arranged in the cylindrical leaching kettle (1), the inner side and the outer side of the annular piston disc (8) are respectively attached to the inner wall of the cylindrical leaching kettle (1) and the outer side of the central discharging pipe (4), and the bottom of the cylindrical leaching kettle (1) is connected with a pressure guide conveying pipe (801);
the lower part of the central discharging pipe (4) is connected with a rotary adjusting pipe (6), a communicating interface (601) is formed in the side wall of the rotary adjusting pipe (6), the bottom end opening (201) and the discharging opening (401) are matched in size, the bottom end opening (201) and the discharging opening (401) at the top end of the central discharging pipe (4) are mutually closed and embedded when the central return pipe (2) moves downwards, meanwhile, the lifting sealing plate (206) synchronously moves downwards to the lower part of the communicating interface (601), the bottom end opening (201) and the discharging opening (401) at the top end of the central discharging pipe (4) are mutually separated and opened when the central return pipe (2) moves upwards, and meanwhile, the lifting sealing plate (206) synchronously moves upwards to the upper part of the communicating interface (601) and the bottom surface of the circular filter disc (5) are mutually attached;
when a central reflux pipe (2) arranged in the cylindrical leaching kettle (1) is in an upper state, a bottom end opening (201) at the bottom end of the cylindrical leaching kettle (1) is mutually separated from a discharge opening (401) at the upper end of a central discharge pipe (4), at the moment, the central reflux pipe (2) is mutually embedded and connected with a discharge opening (401) at the upper end of the central discharge pipe (4) in a sealing way through a central traction rod (205), the lifting and sealing plate (206) is embedded into the central discharge pipe (4) to keep the sealing way, a pumping impeller (3) in the central reflux pipe (2) rotates to pump liquid in the cylindrical leaching kettle (1) from the bottom end opening (201) at the bottom of the central reflux pipe (2) and convey the liquid upwards along the central reflux pipe (2) to be discharged from the top end opening (202), when the central reflux pipe (2) moves downwards, the bottom end opening (201) of the central reflux pipe (2) is mutually embedded and connected with the discharge opening (401) at the upper end of the central discharge pipe (4) in a sealing way, at the moment, the lifting and sealing plate (206) moves downwards to be separated from the central discharge pipe (4), the pumping impeller (3) rotates reversely to pump the liquid from the top end opening (202) and pump the liquid downwards through the bottom opening (202) and pump the liquid downwards to discharge impeller (3) along the central discharge pipe (4) and convey the liquid along the central discharge pipe (4) to a circular filter disc (5), pressurized gas is conveyed through the pressure guide conveying pipe (801) so as to push the annular piston disc (8) to move upwards, liquid between the central discharging pipe (4) and the cylindrical leaching kettle (1) is pushed upwards, the liquid enters the central discharging pipe (4) through the top end opening (202) to be pumped, and the flow pressure and the discharge efficiency of the liquid are improved through the pressurized pumping of the pumping impeller (3).
2. The lithium iron phosphate battery powder recycling and leaching device according to claim 1, wherein the top end of the central return pipe (2) is connected with a lifting linkage frame (203), a hydraulic telescopic rod (204) is arranged on the outer side of the lifting linkage frame (203) in a surrounding mode, the hydraulic telescopic rod (204) and the central return pipe (2) are arranged in parallel, a pumping motor (302) is arranged in the middle of the lifting linkage frame (203), and the shaft end of the pumping motor (302) is connected with the top end of the central driving shaft (301).
3. The lithium iron phosphate battery powder recycling and leaching device according to claim 1, wherein an inclined feeding pipe (102) is connected and arranged at the top end of the side wall of the central backflow pipe (2), a vertical feeding pipe (103) is connected and arranged at the outer end of the inclined feeding pipe (102), a fixed feeding pipe (104) is arranged in a nested sliding mode on the outer side of the vertical feeding pipe (103), the fixed feeding pipe (104) is fixedly connected with the cylindrical leaching kettle (1), and the vertical feeding pipe (103) and the central backflow pipe (2) are arranged in parallel.
4. The lithium iron phosphate battery powder recycling and leaching device according to claim 1, wherein the circular filter disc (5) is embedded and slidingly arranged on the inner side of the central discharging pipe (4), a locking clamping groove (502) is formed in the middle of the side wall of the circular filter disc (5), a horizontal locking sleeve (503) is horizontally arranged on the top end of the inner wall of the central discharging pipe (4), an elastic locking pin (504) is arranged on the inner side of the horizontal locking sleeve (503) in a nested and sliding mode, the elastic locking pin (504) and the locking clamping groove (502) are mutually matched in size, the circular filter disc (5) is embedded into the locking clamping groove (502) through the elastic locking pin (504) and is fixed on the top end of the central discharging pipe (4), an unlocking electromagnet (505) is arranged on the rear side of the elastic locking pin (504), a limiting clamping ring (402) is arranged on the top end of the inner wall of the central discharging pipe (4), and the circular filter disc (5) is limited to slide upwards through the limiting clamping ring (402).
5. The lithium iron phosphate battery powder recycling and leaching device according to claim 1, wherein a rotary connecting ring (602) is arranged at the top end of the rotary adjusting pipe (6), the rotary adjusting pipe (6) is rotationally connected with the bottom end of the central discharging pipe (4) through the rotary connecting ring (602), a fixed sleeve (7) is nested outside the rotary adjusting pipe (6), the fixed sleeve (7) is fixedly connected with the central discharging pipe (4), a filtrate discharging pipe (701) and a filter residue discharging pipe (702) are symmetrically connected to the side wall of the fixed sleeve (7), and the direction position of the communication interface (601) is adjusted through rotation, so that the communication interface (601) is mutually communicated with the inner end opening of the filtrate discharging pipe (701) or the filter residue discharging pipe (702).
6. The lithium iron phosphate battery powder recycling and leaching device according to claim 1, wherein a rotary fluted disc (603) is arranged on the outer side of the rotary connecting ring (602) in a surrounding mode, an adjusting gear (604) is arranged on the outer side of the rotary fluted disc (603) in a meshed mode, and an adjusting motor (605) is arranged at the shaft end of the adjusting gear (604).
7. The lithium iron phosphate battery powder recycling and leaching device according to claim 1, wherein the top surface of the annular piston disc (8) is of a conical structure which is obliquely arranged towards the direction of the central discharging pipe (4).
8. The lithium iron phosphate battery powder recovery leaching device according to claim 1, wherein a heat preservation jacket (9) is arranged on the outer side of the barrel type leaching kettle (1) in a surrounding mode, a pressing piston plate (901) is arranged on the inner side of the heat preservation jacket (9) in a jogged sliding mode, a pressing screw sleeve (902) is arranged in the middle of the pressing piston plate (901), a pressing screw (903) is arranged on the inner side of the pressing screw sleeve (902) in a nested mode, a pressing motor (904) is arranged on the shaft end of the pressing screw (903) in a connected mode, an air pressure balancing opening (905) is formed in the top of the heat preservation jacket (9), and the bottom of the heat preservation jacket (9) is communicated with the inner bottom of the barrel type leaching kettle (1) through the guide pressure conveying pipe (801).
9. The use method of the lithium iron phosphate battery powder recovery leaching device according to any one of claims 1 to 8, which is characterized by comprising the following steps:
Adding raw materials into a cylindrical leaching kettle (1) for leaching, keeping a central reflux pipe (2) arranged in the cylindrical leaching kettle (1) in an upper position, at the moment, separating a bottom end opening (201) at the bottom end of the cylindrical leaching kettle from a discharge opening (401) at the upper end of a central discharge pipe (4), at the moment, dragging a lifting sealing plate (206) through a central traction rod (205) by the central reflux pipe (2), embedding the lifting sealing plate (206) into the central discharge pipe (4) to keep the sealing, rotating a pumping impeller (3) which is arranged in the central reflux pipe (2) in a jogging way, pumping liquid in the cylindrical leaching kettle (1) into the central discharge pipe (2) from the bottom end opening (201) at the bottom of the central reflux pipe (2), conveying the liquid upwards from the top end opening (202) along the central reflux pipe (2), continuously and circularly stirring the liquid, at the moment, downwards moving the central reflux pipe (2) to enable the bottom end opening (201) to be jogged and the discharge opening (401) at the upper end of the central discharge pipe (4) to be closely connected with each other, simultaneously downwards moving the lifting sealing plate (206) to be separated from the central discharge pipe (4), pumping impeller (3) in a jogging way, pumping liquid downwards from the central discharge pipe (4) through the impeller (3) in a reverse direction, pumping liquid into the bottom opening (3) and then discharging liquid from the central discharge disk (4) through the middle filter pan (5) through the discharge opening (5), when the pumping impeller (3) is used for conveying, pressurized gas is conveyed through the pressure guide conveying pipe (801) so as to push the annular piston disc (8) to move upwards, liquid between the central discharging pipe (4) and the cylindrical leaching kettle (1) is pushed upwards, the liquid enters the central discharging pipe (4) through the top opening (202) to be pumped, the flow pressure and the discharge efficiency of the liquid are improved through the pressurized pumping of the pumping impeller (3), and the problem that the leaching liquid is difficult to discharge after the filtering solid is gradually deposited on the filter screen is avoided.
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| CN202311284318.2A CN117551875B (en) | 2023-10-07 | 2023-10-07 | Lithium iron phosphate battery powder recycling and leaching device and application method thereof |
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| US4363786A (en) * | 1978-05-26 | 1982-12-14 | Occidental Chemical Corp. | Apparatus for reacting a particulate solid and a liquid |
| JPH09122641A (en) * | 1995-10-30 | 1997-05-13 | Iwasaki Electric Co Ltd | Reaction apparatus |
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| CN110876864A (en) * | 2019-11-28 | 2020-03-13 | 苏州盛天力离心机制造有限公司 | Washing and filtering integrated machine |
| CN111317110A (en) * | 2020-04-02 | 2020-06-23 | 蚌埠学院 | Jujube powder processing rubber grinding device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040240315A1 (en) * | 2003-06-02 | 2004-12-02 | Balan Prakash G. | Slotted draft tube mixing systems |
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|---|---|---|---|---|
| US4363786A (en) * | 1978-05-26 | 1982-12-14 | Occidental Chemical Corp. | Apparatus for reacting a particulate solid and a liquid |
| JPH09122641A (en) * | 1995-10-30 | 1997-05-13 | Iwasaki Electric Co Ltd | Reaction apparatus |
| CN209612960U (en) * | 2019-02-20 | 2019-11-12 | 宜宾金通化工科技有限公司 | A kind of Chemical Manufacture mixed reactor |
| CN110876864A (en) * | 2019-11-28 | 2020-03-13 | 苏州盛天力离心机制造有限公司 | Washing and filtering integrated machine |
| CN111317110A (en) * | 2020-04-02 | 2020-06-23 | 蚌埠学院 | Jujube powder processing rubber grinding device |
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