CN113332932B - Recovery device for lithium iron phosphate anode material - Google Patents
Recovery device for lithium iron phosphate anode material Download PDFInfo
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- CN113332932B CN113332932B CN202110580589.7A CN202110580589A CN113332932B CN 113332932 B CN113332932 B CN 113332932B CN 202110580589 A CN202110580589 A CN 202110580589A CN 113332932 B CN113332932 B CN 113332932B
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- iron phosphate
- lithium iron
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- cylindrical
- liquid medicine
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- 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 123
- 238000011084 recovery Methods 0.000 title claims abstract description 62
- 239000010405 anode material Substances 0.000 title claims abstract description 32
- 230000007246 mechanism Effects 0.000 claims abstract description 65
- 239000007774 positive electrode material Substances 0.000 claims abstract description 44
- 239000002699 waste material Substances 0.000 claims abstract description 42
- 239000000463 material Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 21
- 238000001354 calcination Methods 0.000 claims abstract description 15
- 238000000746 purification Methods 0.000 claims abstract description 15
- 239000002912 waste gas Substances 0.000 claims abstract description 14
- 238000005245 sintering Methods 0.000 claims abstract description 7
- 239000003814 drug Substances 0.000 claims description 63
- 239000007788 liquid Substances 0.000 claims description 61
- 238000007789 sealing Methods 0.000 claims description 34
- 239000000126 substance Substances 0.000 claims description 25
- 238000005485 electric heating Methods 0.000 claims description 18
- 238000007599 discharging Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910001386 lithium phosphate Inorganic materials 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 claims description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical group [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000011325 microbead Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 230000001590 oxidative effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000000926 separation method Methods 0.000 abstract description 5
- 239000002585 base Substances 0.000 description 11
- 239000000428 dust Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000010406 cathode material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910010707 LiFePO 4 Inorganic materials 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000003446 memory effect Effects 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
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/001—Calcining
- B01J6/002—Calcining using rotating drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/306—Alkali metal compounds of potassium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/604—Hydroxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention belongs to the technical field of recovery of lithium iron phosphate anode materials, and discloses a recovery device of lithium iron phosphate anode materials, which comprises a base, a calciner, a driving mechanism, a control mechanism and a purifying mechanism, wherein the base is provided with a first shell and a second shell; the calciner is used for sintering the waste lithium iron phosphate positive electrode plate; wherein, the driving mechanism is used for driving the calciner to work; wherein, control mechanism is used for controlling calciner, actuating mechanism and purifying mechanism work. The recovery device of the lithium iron phosphate positive electrode material can prevent the recovered lithium iron phosphate positive electrode material from being oxidized, can ensure the quality of the recovered lithium iron phosphate positive electrode material, can not only improve the calcining effect, but also effectively improve the material separation speed of the surface of the waste lithium iron phosphate positive electrode plate, thereby improving the recovery efficiency of the lithium iron phosphate positive electrode material, having higher intelligent degree, more convenient operation, self-contained purification function, being capable of preventing waste gas generated in the working process from polluting the environment and having better environmental protection value.
Description
Technical Field
The invention relates to the technical field of recovery of lithium iron phosphate anode materials, in particular to a recovery device of a lithium iron phosphate anode material.
Background
The lithium iron phosphate is a lithium ion battery electrode material, has a chemical formula of LiFePO4 and is mainly used for various lithium ion batteries. The lithium iron phosphate battery is a lithium ion battery which uses lithium iron phosphate (LiFePO 4) as a positive electrode material and carbon as a negative electrode material, and has the advantages of high working voltage, high energy density, long cycle life, good safety performance, small self-discharge rate and no memory effect.
Therefore, the recovery of the waste lithium iron phosphate positive electrode plate is necessary, however, in the existing recovery device of the lithium iron phosphate positive electrode material, the recovered lithium iron phosphate positive electrode material is easy to oxidize in the recovery process, and the quality of the recovered lithium iron phosphate positive electrode material is difficult to ensure; secondly, the existing recovery device of the lithium iron phosphate anode material has poor calcination effect, so that the material separation speed of the surface of the waste lithium iron phosphate anode plate is slower, and the recovery efficiency of the lithium iron phosphate anode material is affected; in addition, the existing recovery device of the lithium iron phosphate anode material is low in intelligent degree and inconvenient to operate; in addition, the current recovery device of the lithium iron phosphate anode material has no purification function, and waste gas generated in the working process of the recovery device can pollute the environment, so that the environmental protection value is poor.
Disclosure of Invention
The invention aims to provide a recovery device for a lithium iron phosphate positive electrode material, which can prevent the recovered lithium iron phosphate positive electrode material from being oxidized, can ensure the quality of the recovered lithium iron phosphate positive electrode material, can not only improve the calcination effect, but also effectively improve the substance separation speed of the surface of a waste lithium iron phosphate positive electrode plate, thereby improving the recovery efficiency of the lithium iron phosphate positive electrode material, and has the advantages of higher intelligent degree, more convenient operation, self-contained purification function, capability of preventing waste gas generated in the working process from polluting the environment and better environmental protection value, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a lithium iron phosphate positive electrode material recycling device, comprising:
the upper part of the base is provided with a calciner, a driving mechanism, a control mechanism and a purifying mechanism;
the calciner is used for sintering the waste lithium iron phosphate positive electrode plate;
Wherein the driving mechanism is used for driving the calciner to work;
Wherein the control mechanism is used for controlling the calciner, the driving mechanism and the purifying mechanism to work;
The purifying mechanism is used for purifying waste gas generated in the working process of the calciner.
The above-mentioned lithium iron phosphate positive electrode material's recovery unit, wherein, calciner includes two stands, back shaft, shell, upper cover, cylindrical fretwork inner bag, first sealed lid, a plurality of electrical heating plates, collecting hopper and second sealed lid, two the stand is all vertical and fixedly installed the upper portion of base, the back shaft passes through the bearing and rotates installs two between the stand, just the back shaft level sets up, the shell passes through the bearing and rotates the suit and be in on the back shaft, just the shell is located two between the stand, the both ends of shell all pass through the connecting block respectively with two the medial surface fixed connection of stand, the upper cover passes through the hinge and is in the upper portion of shell, and when the upper cover lid closes the upper portion of shell the shell with form cylindrical sealed space between the upper cover, cylindrical fretwork inner bag fixed cover is in on the back shaft, just cylindrical fretwork inner bag is located cylindrical sealed space, be provided with sealed lid on the cylindrical fretwork inner bag, first lid is established the electrical heating plate and the collecting hopper is in the fixed position is in to the both ends of shell and the collecting hopper is in the fixed position is in the second is in the same place.
According to the recovery device for the lithium iron phosphate anode material, the cylindrical shell is fixedly arranged in the cylindrical hollowed-out liner, and the cylindrical shell and the supporting shaft are coaxially arranged.
According to the recovery device for the lithium iron phosphate anode material, the handle is fixedly arranged on the outer side face of the upper cover, and the buckles are jointly arranged at the two ends of the upper cover and the two ends of the shell.
The recovery device of the lithium iron phosphate positive electrode material comprises a driving mechanism, wherein the driving mechanism comprises a driven belt pulley, a driving motor and a driving belt pulley, the driven belt pulley is fixedly installed at one end part of the supporting shaft, the driving motor is fixedly installed at the side part of the upright post, the driving belt pulley is fixedly installed at the end part of a rotating shaft of the driving motor, and the driving belt pulley is in transmission connection with the driven belt pulley through a belt.
The lithium iron phosphate anode material recycling device comprises a control box, a controller, a temperature sensor and a touch display screen, wherein the control box is fixedly installed on the upper portion of a base through a supporting rod, the controller is fixedly installed inside the control box and is respectively and electrically connected with a driving motor and a plurality of electric heating plates, the temperature sensor is embedded on end walls at two ends of a shell, a signal output end of the temperature sensor is electrically connected with a signal input end of the controller, and the touch display screen is embedded on the front portion of the control box.
The recovery device of the lithium iron phosphate anode material, wherein the control mechanism further comprises a rear cover plate, a power switch, a loudspeaker and a status indicator lamp, wherein the rear cover plate is fixedly installed at the rear part of the control box through screws, the power switch and the loudspeaker are fixedly installed at the side parts of the control box, the power switch is used for controlling the recovery device of the lithium iron phosphate anode material to be started or stopped, the loudspeaker is electrically connected with the controller, the status indicator lamp is fixedly installed at the top of the control box, the status indicator lamp is electrically connected with the controller, the rear part of the control box is fixedly installed with a fitting lug, and screw holes matched with the screws are formed in the fitting lug.
The recovery device of lithium iron phosphate positive electrode material comprises a liquid medicine barrel, a suction fan, a first cylindrical shell, a first end cover, a filter screen, a first connecting pipe, a second connecting pipe, an exhaust pipe, a second cylindrical shell, a second end cover and a filter core, wherein the liquid medicine barrel is fixedly arranged on the upper part of the base, purified liquid medicine is contained in the liquid medicine barrel, the suction fan is fixedly arranged on the top of the liquid medicine barrel, the suction fan is electrically connected with the controller, the first cylindrical shell is fixedly arranged on an air suction port of the suction fan, the first end cover is in threaded connection with one end of the first cylindrical shell, the filter screen is packaged in the first cylindrical shell through the first end cover, one end of the first connecting pipe is connected with the outer side surface of the first end cover through a rotary joint, the other end of the first connecting pipe is fixedly arranged on the outer side surface of the upper cover, the first end cover is fixedly connected with the first end of the first cylindrical shell, the second end cover is fixedly arranged on the inner side surface of the first cylindrical shell, the other end of the exhaust pipe is fixedly connected with the first end cover, the second end cover is fixedly arranged on the inner side of the first cylindrical shell, the second end cover is fixedly connected with the liquid medicine barrel, the second end cover is fixedly connected with the first end cover, the filter pipe is connected with the inner side of the first end cover, and a plurality of exhaust holes are uniformly formed in the second end cover, and the filter element is packaged in the second cylindrical shell through the second end cover.
The recovery device of the lithium iron phosphate anode material, wherein the purification mechanism further comprises an even distributor, the even distributor comprises a disc-shaped shell, the disc-shaped shell is arranged in the liquid medicine barrel and is close to the bottom of the liquid medicine barrel, the bottom wall of the disc-shaped shell is concavely arranged, a vertical pipe is fixedly arranged at the center position of the bottom wall of the disc-shaped shell, a tubular connecting port is fixedly arranged at the center position of the top wall of the disc-shaped shell, the utility model discloses a liquid medicine barrel, including disc casing, riser, suction fan, tubular connector, riser, second connecting pipe, riser, suction fan, riser, bottom, the last a plurality of equipartition holes of having seted up of diapire of disc casing, a plurality of equipartition holes are a plurality of the equipartition hole is around the riser is the equiangular arrangement of annular, the bottom of riser with the interior bottom fixed connection of liquid medicine barrel, just the inside of riser with a plurality of equipartition holes are linked together, the upper end of tubular connector with the second connecting pipe is kept away from the one end of suction fan is connected, just the bottom of tubular connector stretches into the inside of riser.
The recovery device of the lithium iron phosphate anode material comprises a liquid medicine barrel, wherein the top of the liquid medicine barrel is provided with a medicine adding port, the bottom of the liquid medicine barrel is communicated with a waste discharging pipe, the upper end of the medicine adding port is in threaded connection with a cover, and a valve is arranged on the waste discharging pipe.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the lithium iron phosphate positive electrode material recovered by the recovery device, the recovered lithium iron phosphate positive electrode material can be prevented from being oxidized, the quality of the recovered lithium iron phosphate positive electrode material can be ensured, and particularly, the rotating cylindrical hollow liner is utilized to drive the waste lithium iron phosphate positive electrode sheet to rotate in the calcining process, so that the calcining effect can be improved, and the substance separation speed of the surface of the waste lithium iron phosphate positive electrode sheet can be effectively improved, and the recovery efficiency of the lithium iron phosphate positive electrode material is improved;
2. According to the intelligent control system, the controller intelligently controls the electric heating plates to work according to the data uploaded by the temperature sensor, and controls the driving motor to intelligently work according to the control instruction input through the touch display screen, so that the intelligent degree is high, and the operation is convenient;
3. According to the invention, after the end of the calcining furnace, the exhaust gas generated in the cylindrical sealing space can be pumped into the purified liquid medicine in the liquid medicine barrel by the suction fan for purification, so that the exhaust gas generated in the working process of the recovery device of the lithium iron phosphate anode material can be prevented from polluting the environment, and the recovery device of the lithium iron phosphate anode material has a purification function and is good in environmental protection value.
Drawings
FIG. 1 is a schematic structural view of a recovery device for lithium iron phosphate positive electrode material of the present invention;
FIG. 2 is one of the schematic structural diagrams of the recovery device for lithium iron phosphate positive electrode material according to another view angle of the present invention;
FIG. 3 is a second schematic view of a recycling apparatus for lithium iron phosphate cathode material according to another embodiment of the present invention;
FIG. 4 is a third schematic structural view of the recovery device for lithium iron phosphate positive electrode material according to another aspect of the present invention;
FIG. 5 is a schematic diagram showing an assembled structure of a calciner and a driving mechanism of the recovery device for lithium iron phosphate positive electrode material of the present invention;
FIG. 6 is a schematic diagram showing an assembled structure of a calciner and a drive mechanism of the recovery device for lithium iron phosphate positive electrode material according to another view angle of the present invention;
FIG. 7 is a schematic view of a partial exploded view of the calciner and drive mechanism of the lithium iron phosphate positive electrode material recovery device of the present invention;
FIG. 8 is a schematic view showing a partial structure of a calciner of the recovery apparatus for lithium iron phosphate positive electrode material of the present invention;
FIG. 9 is a schematic cross-sectional view of the purification mechanism of the recovery device of lithium iron phosphate positive electrode material of the present invention;
FIG. 10 is a schematic cross-sectional view of another view of the purification mechanism of the recovery device of lithium iron phosphate positive electrode material of the present invention;
FIG. 11 is an enlarged schematic view of the structure at the partial view A in FIG. 10;
FIG. 12 is an enlarged schematic view of the structure at the partial view B in FIG. 10;
FIG. 13 is a schematic view showing a partially sectional structure of a purification mechanism of a recovery device of lithium iron phosphate positive electrode material according to the present invention;
Fig. 14 is a schematic structural view of a control mechanism of the recovery device of lithium iron phosphate positive electrode material according to the present invention;
FIG. 15 is a schematic structural view of a control mechanism of the recovery device of lithium iron phosphate positive electrode material according to another view angle of the present invention;
Fig. 16 is a schematic view showing the internal structure of a control mechanism of the lithium iron phosphate positive electrode material recovery device according to the present invention.
In the figure:
1. A base;
2. A calciner; 201. a column; 202. a housing; 203. an upper cover; 204. a support shaft; 205. an electric heating plate; 206. a handle; 207. a hasp; 208. a collecting hopper; 209. a second sealing cover; 210. a cylindrical hollow inner container; 211. a cylindrical housing; 212. a material port; 213. a first sealing cover; 214. a connecting block;
3. A driving mechanism; 301. a driven pulley; 302. a driving pulley; 303. a belt; 304. a driving motor;
4. A control mechanism; 401. a control box; 402. a back cover plate; 403. a screw; 404. a controller; 405. fitting lugs; 406. a horn; 407. a power switch; 408. a touch display screen; 409. status indicator lights; 410. a support rod;
5. A purifying mechanism; 501. a liquid medicine barrel; 502. a liquid level sensor; 503. a conductivity sensor; 504. a waste discharge pipe; 505. a riser; 506. a disc-shaped housing; 507. a second connection pipe; 508. a one-way valve; 509. a suction fan; 510. a first connection pipe; 511. an exhaust pipe; 512. a second cylindrical housing; 513. a first cylindrical housing; 514. a first end cap; 515. a rotary joint; 516. a valve; 517. a hexagonal operation block; 518. a filter screen; 519. a filter element; 520. a second end cap; 521. hexagonal grooves; 522. a medicine adding port; 523. a cover; 524. a tubular connection port; 525. holes are evenly distributed.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-16, the present invention provides the following technical solutions:
Example 1
As shown in fig. 1, the recovery device for lithium iron phosphate positive electrode material provided in this embodiment includes: a base 1, a calciner 2 and a driving mechanism 3.
As shown in fig. 1, in order to enable the recovery device of the lithium iron phosphate positive electrode material to be stably placed, a base 1 is horizontally arranged, and support legs are fixedly arranged at the bottom of the base 1;
as shown in fig. 1-8, the calciner 2 is used for sintering the waste lithium iron phosphate positive electrode plates, the calciner 2 is composed of two upright posts 201, a supporting shaft 204, a shell 202, an upper cover 203, a cylindrical hollow liner 210, a first sealing cover 213, a plurality of electric heating plates 205, a collecting hopper 208 and a second sealing cover 209, the two upright posts 201 are vertically and fixedly arranged on the upper portion of the base 1, the supporting shaft 204 is rotatably arranged between the two upright posts 201 through bearings, the supporting shaft 204 is horizontally arranged, the shell 202 is rotatably sleeved on the supporting shaft 204 through bearings, the shell 202 is arranged between the two upright posts 201, two ends of the shell 202 are fixedly connected with inner side surfaces of the two upright posts 201 respectively through connecting blocks 214, the upper cover 203 is hinged on the upper portion of the shell 202 through hinges, when the upper cover 203 is covered on the upper portion of the shell 202, the cylindrical hollow liner 210 is fixedly sleeved on the supporting shaft 204, the cylindrical hollow liner 210 is positioned in the cylindrical sealing space, a material inlet 212 is arranged on the cylindrical hollow liner 210, the first sealing cover 205 is fixedly arranged at two ends of the collecting hopper 202 and the two ends of the connecting covers 208 are fixedly arranged at the two ends of the collecting hopper 202, and the two ends of the connecting covers 208 are fixedly arranged at the bottom ends of the connecting covers 208, respectively.
More perfectly, as shown in fig. 5 and 8, a cylindrical shell 211 is fixedly installed inside the cylindrical hollow inner container 210, the cylindrical shell 211 and the supporting shaft 204 are coaxially arranged, the installed cylindrical shell 211 enables the inside of the cylindrical hollow inner container 210 to form a cylindrical space, the cylindrical space is used for accommodating waste lithium iron phosphate positive pole pieces, and the phenomenon that the calcining quality is affected by the fact that all the waste lithium iron phosphate positive pole pieces added inside the cylindrical shell 211 are stacked together can be avoided, so that the recycling quality of lithium iron phosphate positive pole materials is effectively improved.
More perfectly, as shown in fig. 5, a handle 206 is fixedly installed on the outer side surface of the upper cover 203, and buckles 207 are installed at both ends of the upper cover 203 and both ends of the housing 202 together, so that the upper cover 203 can be conveniently opened and closed by the handle 206, and in addition, the upper cover 203 can be conveniently locked on the upper part of the housing 202 by the buckles 207, thereby improving the tightness between the upper cover 203 and the housing 202,
When the calciner 2 is used, the upper cover 203 is opened, then the first sealing cover 213 is opened, the waste lithium iron phosphate positive electrode plate is put into the cylindrical hollow inner container 210 through the material opening 212, then the first sealing cover 213 is tightly covered on the material opening 212, then the upper cover 203 is closed, then the electric heating plate 205 is started to heat the inside of the shell 202, the temperature is adjusted to 200-400 ℃ to sinter the waste lithium iron phosphate positive electrode plate until the substances on the surface of the waste lithium iron phosphate positive electrode plate are separated to obtain crude lithium iron phosphate materials, in order to improve the calcining effect, in the process of sintering the waste lithium iron phosphate positive electrode plate, the driving mechanism 3 can be used for driving the cylindrical hollow inner container 210 to continuously rotate, in the process of continuously rotating the cylindrical hollow inner container 210, the material falling off from the surface of the waste lithium iron phosphate positive electrode plate falls into the collecting hopper 208 through the hollowed holes on the cylindrical hollowed inner container 210, after the material falling off from the surface of the waste lithium iron phosphate positive electrode plate is sintered for 3 hours, the material is basically separated, then the electric heating plate 205 is closed, the material in the collecting hopper 208 is taken out after the second sealing cover 209 is removed after the material is cooled, then the first sealing cover 213 is removed, the driving mechanism 3 is used for driving the cylindrical hollowed inner container 210 to rotate until the material port 212 faces the collecting hopper 208, the obtained crude lithium iron phosphate material is taken out, in addition, the waste lithium iron phosphate positive electrode plate is always in the cylindrical sealing space in the process of calcining the waste lithium iron phosphate positive electrode plate, the obtained crude lithium iron phosphate material is prevented from being oxidized, so that the quality of the obtained crude lithium iron phosphate positive electrode material is ensured, and therefore the obtained lithium iron phosphate positive electrode material recovered by adopting the recovery device of the lithium iron phosphate positive electrode material, not only can prevent to oxidize, but also can guarantee the quality, and more importantly, the rotary cylindrical hollowed-out liner 210 is utilized to drive the waste lithium iron phosphate positive pole piece to rotate in the calcining process, so that the calcining effect can be improved, and the substance separation speed of the surface of the waste lithium iron phosphate positive pole piece can be effectively improved, thereby improving the recovery efficiency of the lithium iron phosphate positive pole material.
1-4 And 5, the driving mechanism 3 is used for driving the calciner 2 to work, the driving mechanism 3 comprises a driven pulley 301, a driving motor 304 and a driving pulley 302, the driven pulley 301 is fixedly installed at one end of the supporting shaft 204, the driving motor 304 is fixedly installed at the side of the upright column 201, the driving pulley 302 is fixedly installed at the rotating shaft end of the driving motor 304, the driving pulley 302 is in transmission connection with the driven pulley 301 through a belt 303, the driving pulley 302 can rotate by using the driving motor 304, the driving pulley 302 drives the driven pulley 301 to rotate through the belt 303, the driven pulley 301 drives the supporting shaft 204 to drive the supporting shaft 204 to rotate, and the supporting shaft 204 only drives the cylindrical hollow inner container 210 to rotate so as to prevent the cylindrical hollow inner container 210 from rotating too quickly, and the driving motor 304 adopts a speed reducing motor.
Example 2
As shown in fig. 1, the recovery device of lithium iron phosphate cathode material provided in this embodiment is different from that in embodiment 1 in that it further includes a control mechanism 4.
Wherein, as shown in figures 1-5 and 14-16, the control mechanism 4 is used for controlling the operation of the calciner 2 and the driving mechanism 3; the control mechanism 4 is composed of a control box 401, a controller 404, a temperature sensor and a touch display screen 408, the control box 401 is fixedly installed on the upper portion of the base 1 through a supporting rod 410, the controller 404 is fixedly installed inside the control box 401, the controller 404 is respectively electrically connected with a driving motor 304 and a plurality of electric heating plates 205, the temperature sensor is embedded on end walls at two ends of the shell 202, signal output ends of the temperature sensor are electrically connected with signal input ends of the controller 404, and the touch display screen 408 is embedded on the front portion of the control box 401.
The controller 404 is configured to control the driving motor 304 and the plurality of electric heating plates 205 to operate, the touch display 408 is configured to display the operating states of the temperature sensor, the driving motor 304, and the plurality of electric heating plates 205, and meanwhile, the touch display 408 is configured to provide a man-machine interface, so that the recovery device of the lithium iron phosphate positive electrode material is convenient to operate, the controller 404 intelligently controls the plurality of electric heating plates 205 to operate according to the data uploaded by the temperature sensor, and controls the driving motor 304 to operate intelligently according to the control instruction input through the touch display 408.
Wherein, the controller 404 can be a PLC controller.
As shown in fig. 14-16, in order to enrich the functions of the control mechanism 4, the control mechanism 4 further includes a back cover plate 402, a power switch 407, a horn 406 and a status indicator lamp 409, wherein the back cover plate 402 is fixedly installed at the rear part of the control box 401 through a screw 403, the power switch 407 and the horn 406 are both fixedly installed at the side part of the control box 401, the power switch 407 is used for controlling the recovery device of the lithium iron phosphate anode material to be turned on or off, the horn 406 is electrically connected with the controller 404, the status indicator lamp 409 is fixedly installed at the top of the control box 401, the status indicator lamp 409 is electrically connected with the controller 404, an assembling lug 405 is fixedly installed inside the rear part of the control box 401, and a threaded hole matched with the screw 403 is formed in the assembling lug 405.
Wherein, the back shroud 402 forms effective protection to the inside controller 404 of control box 401, switch 407 is used for controlling this lithium iron phosphate positive electrode material's recovery unit switch, loudspeaker 406 is used for sending the warning sound by controller 404 control suggestion staff in time handles the abnormality when this lithium iron phosphate positive electrode material's recovery unit operation is unusual, status indicator lamp 409 is used for showing this lithium iron phosphate positive electrode material's recovery unit's running state in real time, the staff of being convenient for knows this lithium iron phosphate positive electrode material's running state in real time, it makes back shroud 402 be convenient for through screw 403 fixed mounting at the rear portion of control box 401 to join in marriage lug 405.
Example 3
As shown in fig. 1, the recovery device of lithium iron phosphate cathode material provided in this embodiment is different from that in embodiment 2 in that it further includes a purification mechanism 5.
1-4, 9-13 And 16, the purifying mechanism 5 is used for purifying exhaust gas generated in the working process of the calciner 2, the purifying mechanism 5 is composed of a liquid medicine barrel 501, a suction fan 509, a first cylindrical shell 513, a first end cover 514, a filter screen 518, a first connecting pipe 510, a second connecting pipe 507, an exhaust pipe 511, a second cylindrical shell 512, a second end cover 520 and a filter element 519, the liquid medicine barrel 501 is fixedly arranged at the upper part of the base 1, purified liquid medicine is contained in the liquid medicine barrel 501, the suction fan 509 is fixedly arranged at the top of the liquid medicine barrel 501, the suction fan 509 is electrically connected with the controller 404, the first cylindrical shell 513 is fixedly arranged on an air suction inlet of the suction fan 509, the first end cover 514 is in threaded connection with one end of the first cylindrical shell 513 opposite to the suction fan 509, the filter screen 518 is packaged in the first cylindrical shell 513 through the first end cover 514, one end of the first connection pipe 510 is connected with the outer side surface of the first end cap 514 through the rotary joint 515, and the first connection pipe 510 is communicated with the inside of the first cylindrical housing 513 through the rotary joint 515, the other end of the first connection pipe 510 is fixed on the outer side surface of the upper cap 203, and the first connection pipe 510 is communicated with the cylindrical sealing space, the second connection pipe 507 is arranged inside the liquid medicine barrel 501, and one end of the second connection pipe 507 is communicated with the air outlet of the suction fan 509, the other end of the second connection pipe 507 extends into the purified liquid medicine, the exhaust pipe 511 is vertically and fixedly installed at the top of the liquid medicine barrel 501, and the exhaust pipe 511 is communicated with the inside of the liquid medicine barrel 501, the second cylindrical housing 512 is fixedly installed at the upper end of the exhaust pipe 511, and the inside of the second cylindrical housing 512 is communicated with the inside of the exhaust pipe 511, the second end cap 520 is screw-connected at the upper end of the second cylindrical housing 512, and the second end cap 520 is uniformly provided with a plurality of exhaust holes, and the filter element 519 is sealed inside the second cylindrical housing 512 through the second end cap 520.
The working principle of the purification mechanism 5 is that the air in the cylindrical sealing space can be pumped out by the suction fan 509 before the calciner 2 starts to work, so that a near-vacuum state is formed in the cylindrical sealing space, oxidation of lithium iron phosphate anode materials can be avoided, waste gas generated in the cylindrical sealing space can be pumped into purified liquid medicine in the liquid medicine barrel 501 by the suction fan 509 after the calciner 2 finishes working, the waste gas generated in the working process of the recovery device of the lithium iron phosphate anode materials can be prevented from polluting the environment, the recovery device of the lithium iron phosphate anode materials has better environmental protection value, the filter screen 518 can filter dust in order to prevent the purified liquid medicine in the liquid medicine barrel 501 from being polluted by dust in the calciner 2, and the filter element 519 can be utilized for further purifying the purified waste gas in order to ensure the purification effect.
It should be noted that the filter screen 518 is a stainless steel filter screen, the filter core 519 is an activated carbon filter core, and a ceramic microbead heat-insulating coating is sprayed on the outside of the calciner 2 in order to prevent the staff from being scalded.
Wherein the purified liquid medicine can be alkali solution such as potassium hydroxide solution.
As shown in FIG. 11, a hexagonal operating block 517 is fixedly mounted between the top of the first end cap 514 and the swivel 515 for facilitating the removal and installation of the first end cap 514, facilitating later replacement or cleaning of the screen 518.
As shown in fig. 12, a hexagonal groove 521 is also centrally formed on the outer side of the second end cap 520 to facilitate removal and installation of the second end cap 520, which facilitates later replacement or cleaning of the cartridge 519.
As shown in fig. 13, in order to prevent the purified chemical from flowing back into the inside of the suction fan 509 to damage the suction fan 509, a check valve 508 having a conduction direction facing away from the suction fan 509 is further installed on the second connection pipe 507.
As shown in fig. 3 and 16, in order to facilitate understanding of the conductivity of the purified chemical, a conductivity sensor 503 is further embedded in the top wall of the chemical tank 501, and the conductivity sensor 503 is electrically connected to the controller 404.
As shown in fig. 3, 9 and 16, in order to facilitate understanding of the level of the purified chemical in the chemical tank 501, a level sensor 502 is further embedded on the top wall of the chemical tank 501, and the level sensor 502 is electrically connected to the controller 404.
As shown in fig. 9-10 and 13, in order to further enhance the purifying effect of the purifying mechanism 5, the purifying mechanism 5 further includes an even distributor, where the even distributor includes a disc-shaped housing 506, the disc-shaped housing 506 is disposed inside the liquid medicine tank 501, and the disc-shaped housing 506 is disposed near the bottom of the liquid medicine tank 501, the bottom wall of the disc-shaped housing 506 is concavely disposed, a vertical pipe 505 is fixedly mounted at the central position of the bottom wall of the disc-shaped housing 506, a tubular connection port 524 is fixedly mounted at the central position of the top wall of the disc-shaped housing 506, a plurality of uniform distribution holes 525 are formed on the bottom wall of the disc-shaped housing 506, the plurality of uniform distribution holes 525 are disposed around the vertical pipe 505 at equal angles in a circumferential direction, the bottom end of the vertical pipe 505 is fixedly connected with the inner bottom wall of the liquid medicine tank 501, the inner portion of the vertical pipe 505 is communicated with the plurality of uniform distribution holes 525, the upper end of the tubular connection port 524 is connected with one end of the second connection pipe 507 far away from the suction fan 509, and the bottom end of the tubular connection port 524 extends into the inner portion of the vertical pipe 505.
The equipartition ware that sets up can be with the waste gas dispersion in purifying the liquid medicine through the inside of disc casing 506 under the mutually supporting of disc casing 506, riser 505, a plurality of equal cloth holes 525 and tubular connection mouth 524 to improve the purifying effect of purifying mechanism 5.
As shown in fig. 9 and 10, in order to facilitate the addition of the purified chemical to the inside of the chemical tank 501, a chemical feeding port 522 is further provided at the top of the chemical tank 501, a waste discharging pipe 504 is further installed at the bottom of the chemical tank 501 in communication for facilitating the discharge of the purified chemical from the chemical tank 501, a cover 523 is further screwed to the upper end of the chemical feeding port 522 in order to prevent the chemical feeding port 522 from entering foreign matters such as dust, and a valve 516 is further installed on the waste discharging pipe 504 in order to facilitate the control of the on-off of the waste discharging pipe 504.
Working principle: when the recovery device for the lithium iron phosphate anode material is used, purified liquid medicine is added into the liquid medicine barrel 501 through the waste pipe 504, then the cover 523 is closed, the upper cover 203 is opened, then the first sealing cover 213 is opened, the waste lithium iron phosphate anode pole piece is put into the cylindrical hollow liner 210 through the material port 212, then the first sealing cover 213 is tightly covered on the material port 212, then the upper cover 203 is closed, then the electric heating plate 205 is started to heat the inside of the shell 202, the temperature is adjusted to 200-400 ℃ to sinter the waste lithium iron phosphate anode pole piece until substances on the surface of the waste lithium iron phosphate anode pole piece are removed and separated to obtain crude lithium iron phosphate material, in order to improve the calcining effect, in the process of sintering the lithium iron phosphate anode, the cylindrical hollow liner 210 can be driven to rotate continuously by the driving motor 304, the substances on the surface of the lithium iron phosphate anode pole piece fall into the inside the hopper 208 through the hollow hole on the cylindrical hollow liner 212 in the process of continuously rotating, when the electric heating plate 205 is started to heat the inside of the shell 202, the waste lithium iron phosphate anode piece is removed to be directly cooled by the material to be removed by the driving motor 205, and then the second sealing cover 208 is driven to be removed to obtain the crude lithium phosphate material after the waste lithium iron phosphate anode material is removed, and finally the waste lithium iron phosphate anode material is removed by the sealing cover 208, and finally the material is removed to be cooled by the driving the cylindrical sealing cover 208;
It should be noted that, before the calciner 2 starts to work, the air in the cylindrical sealed space can be pumped out by the suction fan 509, so that a near-vacuum state is formed in the cylindrical sealed space, oxidation of the lithium iron phosphate anode material can be avoided, after the calciner 2 finishes working, waste gas generated in the cylindrical sealed space can be pumped into the purified liquid medicine in the liquid medicine barrel 501 by the suction fan 509 to purify, and environmental pollution caused by waste gas generated in the working process of the recovery device of the lithium iron phosphate anode material can be avoided, so that the environmental protection value of the recovery device of the lithium iron phosphate anode material is better, and in order to prevent the purified liquid medicine in the liquid medicine barrel 501 from being polluted by dust in the calciner 2, the filter screen 518 can filter the dust, and in order to ensure the purification effect, the filter element 519 can be used for further purifying the purified waste gas.
The operation processes of the electric heating plate 205, the driving motor 304 and the suction fan 509 can be controlled by the touch display 408.
None of the inventions are related to the same or are capable of being practiced in the prior art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (1)
1. A lithium iron phosphate positive electrode material recovery device, characterized by comprising:
the calcination device comprises a base (1), wherein a calciner (2), a driving mechanism (3), a control mechanism (4) and a purification mechanism (5) are arranged on the upper portion of the base (1), and the calcination device comprises:
The calciner (2) is used for sintering the waste lithium iron phosphate positive electrode plate;
The driving mechanism (3) is used for driving the calciner (2) to work;
the control mechanism (4) is used for controlling the calciner (2), the driving mechanism (3) and the purifying mechanism (5) to work;
the purifying mechanism (5) is used for purifying waste gas generated in the working process of the calciner (2);
The calciner (2) comprises two stand columns (201), a supporting shaft (204), a shell (202), an upper cover (203), a cylindrical hollowed-out liner (210), a first sealing cover (213), a plurality of electric heating plates (205), a collecting hopper (208) and a second sealing cover (209), wherein the two stand columns (201) are vertically and fixedly arranged on the upper part of the base (1), the supporting shaft (204) is rotatably arranged between the two stand columns (201) through a bearing, the supporting shaft (204) is horizontally arranged, the shell (202) is rotatably sleeved on the supporting shaft (204) through a bearing, the shell (202) is positioned between the two stand columns (201), two ends of the shell (202) are fixedly connected with the inner side surfaces of the two stand columns (201) respectively through connecting blocks (214), the upper cover (203) is hinged on the upper part of the shell (202) through a hinge, a handle (206) is fixedly arranged on the outer side surface of the upper cover (203), when the upper cover (203) and the two ends of the shell (202) are fixedly arranged on the same, and when the two ends of the upper cover (203) are in the same with the cylindrical cover (203), the cylindrical hollow inner container (210) is fixedly sleeved on the supporting shaft (204), the cylindrical hollow inner container (210) is positioned in the cylindrical sealing space, a material opening (212) is formed in the cylindrical hollow inner container (210), the first sealing cover (213) is covered on the material opening (212), a plurality of electric heating plates (205) are respectively and fixedly installed at two ends of the shell (202) and two ends of the upper cover (203), the collecting hopper (208) is fixedly installed at the bottom center position of the shell (202), the collecting hopper (208) is communicated with the inside of the shell (202), and the second sealing cover (209) is covered at the bottom end of the collecting hopper (208);
A cylindrical shell (211) is fixedly arranged in the cylindrical hollowed-out liner (210), and the cylindrical shell (211) and the supporting shaft (204) are coaxially arranged;
The driving mechanism (3) comprises a driven belt pulley (301), a driving motor (304) and a driving belt pulley (302), wherein the driven belt pulley (301) is fixedly arranged at one end part of the supporting shaft (204), the driving motor (304) is fixedly arranged at the side part of the upright post (201), the driving belt pulley (302) is fixedly arranged at the rotating shaft end part of the driving motor (304), and the driving belt pulley (302) is in transmission connection with the driven belt pulley (301) through a belt (303);
The control mechanism (4) comprises a control box (401), a controller (404), a temperature sensor and a touch control display screen (408), wherein the control box (401) is fixedly arranged on the upper portion of the base (1) through a supporting rod (410), the controller (404) is fixedly arranged in the control box (401), the controller (404) is respectively and electrically connected with the driving motor (304) and the electric heating plates (205), the temperature sensor is embedded on the end walls of the two ends of the shell (202), the signal output end of the temperature sensor is electrically connected with the signal input end of the controller (404), and the touch control display screen (408) is embedded on the front portion of the control box (401);
The control mechanism (4) further comprises a rear cover plate (402), a power switch (407), a loudspeaker (406) and a status indicator lamp (409), wherein the rear cover plate (402) is fixedly installed at the rear part of the control box (401) through a screw (403), the power switch (407) and the loudspeaker (406) are fixedly installed at the side part of the control box (401), the power switch (407) is used for controlling the recovery device of the lithium iron phosphate anode material to be turned on and off, the loudspeaker (406) is electrically connected with the controller (404), the status indicator lamp (409) is fixedly installed at the top of the control box (401), the status indicator lamp (409) is electrically connected with the controller (404), a fitting lug (405) is fixedly installed in the rear part of the control box (401), and a threaded hole matched with the screw (403) is formed in the fitting lug (405);
The purifying mechanism (5) comprises a liquid medicine barrel (501), a suction fan (509), a first cylindrical shell (513), a first end cover (514), a filter screen (518), a first connecting pipe (510), a second connecting pipe (507), an exhaust pipe (511), a second cylindrical shell (512), a second end cover (520) and a filter core (519), wherein the liquid medicine barrel (501) is fixedly arranged at the upper part of the base (1), purified liquid medicine is contained in the liquid medicine barrel (501), the suction fan (509) is fixedly arranged at the top of the liquid medicine barrel (501), the suction fan (509) is electrically connected with the controller (404), the first cylindrical shell (513) is fixedly arranged on an air suction port of the suction fan (509), one end of the first cylindrical shell (513) opposite to the suction fan (509) is in threaded connection, the filter screen (518) is packaged in the interior of the first cylindrical shell (513) through the first end cover (514), the first connecting pipe (510) is electrically connected with the first end (515) through a rotary joint (515) through the rotary joint (514), the other end of the first connecting pipe (510) is fixed on the outer side surface of the upper cover (203), the first connecting pipe (510) is communicated with the cylindrical sealing space, the second connecting pipe (507) is arranged inside the liquid medicine barrel (501), one end of the second connecting pipe (507) is communicated with an air outlet of the suction fan (509), the other end of the second connecting pipe (507) stretches into the purified liquid medicine, the exhaust pipe (511) is vertically and fixedly arranged at the top of the liquid medicine barrel (501), the exhaust pipe (511) is communicated with the inside of the liquid medicine barrel (501), the second cylindrical shell (512) is fixedly arranged at the upper end part of the exhaust pipe (511), the inside of the second cylindrical shell (512) is communicated with the inside of the exhaust pipe (511), the second end cover (520) is screwed at the upper end of the second cylindrical shell (512), and a plurality of exhaust holes are uniformly formed in the second end cover (520), and the second end cover (519) is encapsulated inside the second cylindrical shell (512) through the second end cover (520);
The purification mechanism (5) further comprises an even distributor, the even distributor comprises a disc-shaped shell (506), the disc-shaped shell (506) is arranged inside the liquid medicine barrel (501), the disc-shaped shell (506) is close to the bottom of the liquid medicine barrel (501), the bottom wall of the disc-shaped shell (506) is concavely arranged, a vertical pipe (505) is fixedly arranged at the center position of the bottom wall of the disc-shaped shell (506), a tubular connecting port (524) is fixedly arranged at the center position of the top wall of the disc-shaped shell (506), a plurality of even distribution holes (525) are formed in the bottom wall of the disc-shaped shell (506), the even distribution holes (525) are distributed in a circular equiangular arrangement around the vertical pipe (505), the bottom end of the vertical pipe (505) is fixedly connected with the inner bottom wall of the liquid medicine barrel (501), the inside of the vertical pipe (505) is communicated with a plurality of the even distribution holes (524), the upper end of the tubular connecting port (524) is connected with one end of the second connecting port (507) far away from the suction fan (509), and the bottom end of the tubular connecting port (525) stretches into the inside the vertical pipe (505);
The top of the liquid medicine barrel (501) is provided with a medicine adding port (522), the bottom of the liquid medicine barrel (501) is communicated with a waste discharging pipe (504), the upper end of the medicine adding port (522) is connected with a cover (523) in a threaded manner, and a valve (516) is arranged on the waste discharging pipe (504);
The filter screen (518) is a stainless steel filter screen, the filter element (519) is an active carbon filter element, a ceramic microbead heat-insulating coating is sprayed outside the calciner (2), and the purifying liquid medicine is potassium hydroxide solution;
A liquid level sensor (502) is embedded on the top wall of the liquid medicine barrel (501), and the liquid level sensor (502) is electrically connected with the controller (404);
the working principle of the purifying mechanism is that air in the cylindrical sealing space is pumped out by utilizing a suction fan before the calciner starts to work, so that a vacuum state is formed in the cylindrical sealing space, the oxidation of lithium iron phosphate anode materials can be avoided, waste gas generated in the cylindrical sealing space is pumped into purifying liquid medicine in a liquid medicine barrel by utilizing the suction fan for purifying after the calciner finishes working, and the environment pollution caused by the waste gas generated in the working process of the recovering device of the lithium iron phosphate anode materials can be avoided;
when the calcining furnace is used, the upper cover is opened, then the first sealing cover is opened, the waste lithium iron phosphate positive pole piece is put into the cylindrical hollow inner container through the material opening, then the first sealing cover is tightly covered on the material opening, then the upper cover is closed, then the electric heating plate is started to heat the inside of the shell, the temperature is adjusted to 200-400 ℃ to sinter the waste lithium iron phosphate positive pole piece until substances on the surface of the waste lithium iron phosphate positive pole piece are separated to obtain crude lithium iron phosphate materials, in the process of sintering the waste lithium iron phosphate positive pole piece, the driving mechanism is used for driving the cylindrical hollow inner container to continuously rotate, in the process of continuously rotating the cylindrical hollow inner container, the substances falling off on the surface of the waste lithium iron phosphate positive pole piece drop into the inner part of the collecting hopper through the hollow hole on the cylindrical inner container, after the electric heating plate is sintered for 3 hours, the second sealing cover is removed to take out the substances inside the shell, then the first sealing cover is removed, the driving mechanism is used for driving the hollow inner container to face the cylindrical hollow inner container to obtain crude lithium phosphate materials, and the crude lithium iron phosphate materials can be obtained in the process of directly oxidizing the cylindrical lithium iron phosphate positive pole piece, and the crude lithium phosphate materials can be prevented from being directly oxidized in the cylindrical hollow inner container.
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| CN116979172B (en) * | 2023-09-25 | 2023-12-22 | 赣州赛可韦尔科技有限公司 | Lithium iron phosphate waste recycling device and method for preparing battery-grade lithium phosphate by using same |
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| CN106910889A (en) * | 2017-02-27 | 2017-06-30 | 中南大学 | A kind of method that positive active material is regenerated from waste lithium iron phosphate battery |
| CN207822726U (en) * | 2018-01-09 | 2018-09-07 | 四川众望安全环保技术咨询有限公司 | A kind of waste gas purification apparatus |
| CN213179370U (en) * | 2020-08-03 | 2021-05-11 | 江西睿智环保科技有限公司 | Environment-friendly shell powder coating calcining equipment |
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| WO2012105637A1 (en) * | 2011-02-02 | 2012-08-09 | 古河電気工業株式会社 | Microparticle mixture, positive electrode active material, positive electrode, secondary cell, and method for producing same |
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| CN106910889A (en) * | 2017-02-27 | 2017-06-30 | 中南大学 | A kind of method that positive active material is regenerated from waste lithium iron phosphate battery |
| CN207822726U (en) * | 2018-01-09 | 2018-09-07 | 四川众望安全环保技术咨询有限公司 | A kind of waste gas purification apparatus |
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