CN106207267A - A kind of lithium ion cell positive discards slurry recovery system and recovery method - Google Patents
A kind of lithium ion cell positive discards slurry recovery system and recovery method Download PDFInfo
- Publication number
- CN106207267A CN106207267A CN201610662341.4A CN201610662341A CN106207267A CN 106207267 A CN106207267 A CN 106207267A CN 201610662341 A CN201610662341 A CN 201610662341A CN 106207267 A CN106207267 A CN 106207267A
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- slurry
- lithium ion
- fluid bed
- dehydrator
- discards
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- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The open a kind of lithium ion cell positive of the present invention discards slurry recovery system, including blender, filter funnel, pivoted arm dehydrator, ball mill, fluid bed, packed absorber, screening machine, blender, filter funnel, pivoted arm dehydrator, ball mill, fluid bed head and the tail successively connect, the air vent bonding pad absorption tower of fluid bed, screening machine is positioned at the lower section of discharging port of fluidized bed.Moisture and solvent that pivoted arm dehydrator of the present invention bakes out are imported in fluid bed by exhaustor, and finally enter packed absorber with the harmful gas in fluid bed, it is to avoid environmental pollution.The recovery system of the present invention achieves positive pole during lithium ion battery produces and discards the recovery of slurry continuous high-efficient; not only can ensure that the purity of recovered material; and efficiency is high, it is little to pollute; even if the most still having good performance; thus greatly reduce production cost, improve the competitiveness of battery manufacture enterprise.
Description
Technical field
The present invention relates to technical field of lithium ion, discard slurry in particular to a kind of lithium ion cell positive and return
Receipts system and recovery method.
Background technology
Lithium ion battery is high with its energy density, lightweight, length in service life, self-discharge rate are low and memory-less effect etc. is excellent
Put and be widely used in the fields such as mobile communication, notebook computer, electric bicycle, electric automobile.The master of lithium ion battery
Be partly positive and negative plate, positive plate typically positive electrode active materials, conductive agent, binding agent are coated with after being uniformly mixed into slurry
Making in current collector aluminum foil, wherein positive electrode active materials is generally the compound of lithium, such as cobalt acid lithium, LiMn2O4, phosphoric acid
Ferrum lithium etc., and positive electrode active materials accounts for the 30-40% of battery totle drilling cost.
Positive electrode active materials making slurry when being coated with on a current collector, each technique the most inevitably produces discarded
Slurry, not only causes the wasting of resources, and deals with improperly and easily cause environmental pollution.Therefore, for cost-effective, protection environment,
It is necessary that positive pole is discarded slurry to be implemented to reclaim.But discarded slurry is exposed in air for a long time, be easily mixed into impurity, foreign body and
Can produce caking phenomenon after water suction, if being directly used in coating, thick and stiff waste slurry granule can puncture pole under the effect of roll
Sheet or wind battery core time pierce through barrier film, cause internal short-circuit of battery, largely effect on battery quality.
Hence it is highly desirable to a kind of, operation is simple, the response rate is high, serialization operation, removal process can not introduce other
Divide and environment amenable lithium ion cell positive discards slurry recovery system.
Summary of the invention
It is an object of the invention to overcome prior art, it is provided that a kind of lithium ion cell positive discard slurry recovery system and
Recovery method, the positive pole produced in lithium ion battery production process can be discarded slurry and reclaim continuously by this system, flow process
Succinctly, it is convenient to implement, and organic efficiency is high and economic benefit is obvious.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of lithium ion cell positive discards slurry recovery system, it is characterised in that include for collect discarded slurry, add molten
Agent the blender being stirred；Slurry after stirring is filtered to remove the filter funnel of foreign body, impurity；After remove impurity
Slurry carry out drying to remove the pivoted arm dehydrator of moisture and solvent；For what the slurry powder after drying was ground
Ball mill；For removing after grinding the fluid bed of binding agent, conductive agent in powder；For being harmful to that removing is discharged from fluid bed
The packed absorber of gas；The screening machine that the final powder reclaimed is sieved；Described blender, filter funnel, pivoted arm
Dehydrator, ball mill, fluid bed head and the tail successively connect, and the air vent bonding pad absorption tower of fluid bed, screening machine is positioned at fluidisation
The lower section of bed discharging opening.
Further, described filter funnel is provided with drainage screen.
Further, described pivoted arm dehydrator includes cylinder, motor, material road, material brush, scraper, discharge gate, wherein motor
It is positioned at inner barrel and is connected with cylinder by support bar；Material road is L-shaped, and the cross section of material road vertical portion is circular, and material
Road charging aperture is connected with cylinder top end cap by bearing, the cross section of horizontal component gradually by circle to rectangular transition；End, material road
Holding by support binder brush, material brush is in cylindrical structural, and the rectangular outlet in one side contacts material road, opposite side is interior with cylinder
Wall contacts；Scraper is connected on material road, and blade contacts with cylinder inboard wall；The output rotary shaft of motor is connected with material road, and
Material road vertical portion, the central axes of output both rotary shafts；The top end cap of cylinder has pore, and described discharge gate sets
Put the bottom at cylinder.
Further, the outer wall of described cylinder is provided with the resistance wire for heating pivoted arm dehydrator, described resistance
Silk is insulated layer parcel.
Invention additionally discloses a kind of lithium ion cell positive and discard slurry recovery method, comprise the following steps:
(1) positive pole produced in the lithium ion battery production process that will collect is discarded slurry and is put into blender, adds original raw
The solvent added when preparing anode sizing agent during product, limit is added solvent limit and is stirred, until the caking phenomenon in discarded slurry disappears
Lose；
(2) slurry after stirring flows into filter funnel, removes foreign body and impurity further；
(3) slurry after filtering and impurity removing enters pivoted arm dehydrator and removes moisture and solvent, obtains slurry powder；
(4) the slurry powder after drying enters ball mill and pulverizes；
(5) the slurry powder after pulverizing enters fluid bed, removes binding agent, conductive agent further；
(6) gained powder is sieved, filter out positive mix.
Further, in described step (1), solvent is N-Methyl pyrrolidone.
Beneficial effects of the present invention: only add solvent required in normal production in the recovery system of the present invention, not
Introduce other compositions, it is ensured that reclaim purity；Slurry after remove impurity enters the material road of pivoted arm dehydrator, during motor rotation, and slurry
Expecting that gradually terminad rectangular outlet moves under centrifugal action, owing to material brush contacts cylinder and expects road outlet, therefore limit brushed by material
Rotate limit to be coated on the inwall of cylinder by slurry.Owing to cylinder is by Resistant heating, the slurry thin layer being coated on inwall can be fast
Speed is dried, and is heated evenly, and slurry thin layer is scraped by scraper subsequently from cylinder inboard wall, and gained powder enters ball mill；Pivoted arm
Moisture and solvent that formula dehydrator bakes out are imported in fluid bed by exhaustor, and final with the harmful gas in fluid bed
Enter packed absorber, it is to avoid environmental pollution.
The recovery system of the present invention achieves positive pole during lithium ion battery produces and discards the recovery of slurry continuous high-efficient, not only
Can ensure that the purity of recovered material, and efficiency is high, it is little to pollute, even if the most still having good performance,
Thus greatly reduce production cost, improve the competitiveness of battery manufacture enterprise.
Accompanying drawing explanation
Fig. 1 is that in the present invention, lithium ion cell positive discards slurry recovery process figure；
Fig. 2 is the Space Layout Structure schematic diagram of recovery system of the present invention；
Fig. 3 is the partial schematic sectional view of pivoted arm dehydrator in the present invention；
Fig. 4 is pivoted arm dehydrator correspondence material road in the present invention, support and the three dimensional structure schematic diagram of material brush.
Detailed description of the invention
With specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 shows that in the present invention, lithium ion cell positive discards the recovery process of slurry, first discards slurry by positive pole
Being placed in blender, the solvent (such as NMP) needed for anode sizing agent is prepared when adding normal production in limit, while be stirred, until useless
Abandon the caking in slurry to disappear；Slurry after stirring removes foreign body and impurity by filter funnel；Then enter back into pivoted arm to dry
Dry machine removes moisture removal and solvent further；The slurry powder generated in pivoted arm dehydrator is put into ball mill pulverize；Powder
Slurry powder after broken enters fluid bed, removes binding agent, conductive agent further, and produce in pivoted arm dehydrator is harmful simultaneously
Gas is also introduced in fluid bed；Finally, the filled absorption tower of harmful gas produced in fluid bed absorbs, and gained material is screened
Machine sieves, and is anode active material of lithium ion battery.
Fig. 2 is the Space Layout Structure schematic diagram of recovery system of the present invention, and this recovery system is by blender 10, filter funnel
20, pivoted arm dehydrator 30, ball mill 40, fluid bed 50, screening machine 60 and packed absorber 70 form.Wherein, blender 10,
Filter funnel 20, pivoted arm dehydrator 30, ball mill 40, fluid bed 50 head and the tail successively connect；Filter funnel 20 was provided with
Filter screen 201；Have pore 301 on pivoted arm dehydrator 30, by exhaustor 302, harmful gas is imported in fluid bed 50；Stream
Change the air vent 501 bonding pad absorption tower 70 of bed 50；Screening machine 60 is positioned at the lower section of fluid bed 50 discharging opening 502.
Fig. 3 is the partial schematic sectional view of pivoted arm dehydrator 30 in recovery system of the present invention, and Fig. 4 is its corresponding material road
305, support 306 and the three dimensional structure schematic diagram of material brush 307.Pivoted arm dehydrator 30 is mainly by cylinder 314, motor 310, material
Road 305, material brush 307, scraper 309 are constituted, and wherein motor 310 is connected with cylinder 314 by support bar 311；Material road 305 is in " L "
Shape, the cross section of material road 305 vertical portion is circular, and material road charging aperture 3051 is by bearing 304 and cylinder 314 top end cap
303 be connected, the cross section of horizontal component gradually by circle to rectangular transition；Material road 305 end passes through support 306 binder brush 307,
Material brush 307 in cylindrical structural, can rotate around its center axis, the rectangular outlet in one side contacts material road 305, opposite side and
The contact internal walls of cylinder 314；Scraper 309 is connected on material road 305, and the contact internal walls of blade and cylinder 314；Motor 310
Output rotary shaft 308 is connected with material road 305, and expects 305 vertical portions, the central axis weight of output both rotary shafts 308
Close；The top end cap 303 of cylinder 314 has pore 301, and imports fluid bed by exhaustor 302 by drying the gas produced
In 50；The outer wall of cylinder 314 is provided with resistance wire 313, for pivoted arm dehydrator 30 is heated, simultaneously resistance wire 313 by every
Thermosphere 312 wraps up.
When starting to operate, the slurry after remove impurity is by expecting that charging aperture 3051 enters pivoted arm dehydrator 30, and motor 310 operates
Time, slurry gradually moves to material road end rectangular outlet under centrifugal action, owing to material brush 307 contacts cylinder 314 He respectively
The outlet of material road, therefore slurry is coated on the inwall of cylinder 314 by material rotation limit, brush 307 limit.Owing to cylinder 314 is by resistance wire 313
Heating, the slurry thin layer being coated on inwall can be dried rapidly, and is heated evenly, scraper 309 subsequently by slurry thin layer from cylinder
Body 314 inwall scrapes, and gained powder enters ball mill 40 through discharge gate 315.Moisture that pivoted arm dehydrator 30 bakes out and solvent
Imported in fluid bed 50 by exhaustor 302, and finally enter packed absorber 70 with the harmful gas in fluid bed 50,
Avoid environmental pollution.
In sum, the present invention can realize lithium ion cell positive and discard continuous, the high efficiente callback of slurry, and flow process is succinct,
It is not introduced into other compositions it is thus possible to recovered material purity is effectively ensured.The harmful gas produced in pivoted arm dehydrator, fluid bed
Body is effectively processed, and environmental pollution is little.Recovery system of the present invention can effectively reduce the manufacturing cost of lithium ion battery and have
Good operability, safety.
Embodiment described above is only to be described the preferred embodiment of the present invention, the not model to the present invention
Enclose and be defined, on the premise of designing spirit without departing from the present invention, the those of ordinary skill in the art technical side to the present invention
Various deformation that case is made and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (6)
1. a lithium ion cell positive discards slurry recovery system, it is characterised in that include for collecting discarded slurry, interpolation
Solvent the blender being stirred；Slurry after stirring is filtered to remove the filter funnel of foreign body, impurity；To remove impurity
After slurry carry out drying to remove the pivoted arm dehydrator of moisture and solvent；For the slurry powder after drying is ground
Ball mill；For removing after grinding the fluid bed of binding agent, conductive agent in powder；For having that removing is discharged from fluid bed
The packed absorber of evil gas；The screening machine that the final powder reclaimed is sieved；Described blender, filter funnel, pivoted arm
Formula dehydrator, ball mill, fluid bed head and the tail successively connect, and the air vent bonding pad absorption tower of fluid bed, screening machine is positioned at stream
Change the lower section of bed discharging opening.
Lithium ion cell positive the most according to claim 1 discards slurry recovery system, it is characterised in that described filtration is leaked
Bucket is provided with drainage screen.
Lithium ion cell positive the most according to claim 1 discards slurry recovery system, it is characterised in that described pivoted arm
Dehydrator include cylinder, motor, material road, material brush, scraper, discharge gate, wherein motor be positioned at inner barrel and pass through support bar and
Cylinder connects；Material road is L-shaped, and the cross section of material road vertical portion is circular, and material road charging aperture is by bearing and cylinder top
End cap be connected, the cross section of horizontal component gradually by circle to rectangular transition；Material road end is by support binder brush, and material brush is in circle
The contact internal walls of column construction, the rectangular outlet in one side contacts material road, opposite side and cylinder；Scraper is connected on material road, and
Blade contacts with cylinder inboard wall；The output rotary shaft of motor is connected with material road, and expects vertical portion, output both rotary shafts
Central axes；The top end cap of cylinder has pore, and described discharge gate is arranged on the bottom of cylinder.
Lithium ion cell positive the most according to claim 3 discards slurry recovery system, it is characterised in that described cylinder
Outer wall is provided with the resistance wire for heating pivoted arm dehydrator, and described resistance wire is insulated layer parcel.
5. a lithium ion cell positive discards slurry recovery method, it is characterised in that comprise the following steps:
(1) positive pole produced in the lithium ion battery production process that will collect is discarded slurry and is put into blender, adds original raw
The solvent added when preparing anode sizing agent during product, limit is added solvent limit and is stirred, until the caking phenomenon in discarded slurry disappears
Lose；
(2) slurry after stirring flows into filter funnel, removes foreign body and impurity further；
(3) slurry after filtering and impurity removing enters pivoted arm dehydrator and removes moisture and solvent, obtains slurry powder；
(4) the slurry powder after drying enters ball mill and pulverizes；
(5) the slurry powder after pulverizing enters fluid bed, removes binding agent, conductive agent further；
(6) gained powder is sieved, filter out positive mix.
Lithium ion cell positive the most according to claim 5 discards slurry recovery method, it is characterised in that described step
(1) in, solvent is N-Methyl pyrrolidone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610662341.4A CN106207267B (en) | 2016-08-12 | 2016-08-12 | A kind of lithium ion cell positive discards slurry recovery system and recovery method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610662341.4A CN106207267B (en) | 2016-08-12 | 2016-08-12 | A kind of lithium ion cell positive discards slurry recovery system and recovery method |
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| CN106207267A true CN106207267A (en) | 2016-12-07 |
| CN106207267B CN106207267B (en) | 2018-07-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734080A (en) * | 2019-12-04 | 2020-01-31 | 青海东台吉乃尔锂资源股份有限公司 | Method for washing lithium carbonate |
| CN110902701A (en) * | 2019-12-04 | 2020-03-24 | 青海东台吉乃尔锂资源股份有限公司 | Device for washing lithium carbonate |
| WO2024045515A1 (en) * | 2022-08-31 | 2024-03-07 | 广东邦普循环科技有限公司 | Recovery method and production line for lithium iron phosphate positive electrode waste slurry |
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| CN101212074A (en) * | 2006-12-30 | 2008-07-02 | 上海比亚迪有限公司 | Method for recovering positive pole material of Li-ion battery |
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| CN102162034A (en) * | 2011-04-07 | 2011-08-24 | 常州今创博凡能源新材料有限公司 | Process for recovering valuable metals from waste lithium batteries |
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| CN105811041A (en) * | 2016-05-19 | 2016-07-27 | 株洲鼎端装备股份有限公司 | Recycling and disposal system for waste lithium-ion power battery |
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Patent Citations (5)
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| CN101212074A (en) * | 2006-12-30 | 2008-07-02 | 上海比亚迪有限公司 | Method for recovering positive pole material of Li-ion battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110734080A (en) * | 2019-12-04 | 2020-01-31 | 青海东台吉乃尔锂资源股份有限公司 | Method for washing lithium carbonate |
| CN110902701A (en) * | 2019-12-04 | 2020-03-24 | 青海东台吉乃尔锂资源股份有限公司 | Device for washing lithium carbonate |
| WO2024045515A1 (en) * | 2022-08-31 | 2024-03-07 | 广东邦普循环科技有限公司 | Recovery method and production line for lithium iron phosphate positive electrode waste slurry |
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| CN106207267B (en) | 2018-07-17 |
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