CN109985713A - It is a kind of for screening the device and its technique of black powder in old and useless battery - Google Patents
It is a kind of for screening the device and its technique of black powder in old and useless battery Download PDFInfo
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- CN109985713A CN109985713A CN201910274922.4A CN201910274922A CN109985713A CN 109985713 A CN109985713 A CN 109985713A CN 201910274922 A CN201910274922 A CN 201910274922A CN 109985713 A CN109985713 A CN 109985713A
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- crusher
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- equipment
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- 238000012216 screening Methods 0.000 title claims abstract description 73
- 239000000843 powder Substances 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 19
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001447 ferric ion Inorganic materials 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 12
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims description 58
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 241000238367 Mya arenaria Species 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 206010017472 Fumbling Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/14—Separating or sorting of material, associated with crushing or disintegrating with more than one separator
-
- 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)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (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 discloses a kind of for screening the device and its technique of black powder in old and useless battery, belongs to old and useless battery reutilization technology field；The device includes primary breakup equipment, the first sorting machine, drying equipment, equipment for removing ferric ion, the first vibrating screening machine, secondary breaker, the second vibrating screening machine, the second sorting machine, third vibrating screening machine and powder remover.Apparatus of the present invention cooperation technique can improve the rate of recovery and safety of black powder in battery material.
Description
Technical field
The invention belongs to old and useless battery reutilization technology fields more particularly to a kind of for screening black powder in old and useless battery
Device and its technique.
Background technique
Power battery refers to larger power capacity and output power, can configure electric bicycle, electric car, electronic
The battery of equipment and tool drives power supply.With flourishing for New-energy electric vehicle, power battery market shows high speed
The situation of growth；At the same time, power battery learies are increasing, and the recycling for scrapping power battery is dynamic as influencing
One key factor of power battery industry development.
For domestic power battery recycling industry also in the starting stage of fumbling, the automation degree of dismantling of power battery is low, main
It to rely on and manually be disassembled.There is also following deficiencies: 1) effect that black powder recycles in battery material for current old and useless battery recycling
Rate is low, and 2) Yi Fasheng accident.
Summary of the invention
Present invention aims to overcome that the shortcomings of the prior art, and provide a kind of for screening black powder in old and useless battery
Device and its technique, device cooperation technique can improve the rate of recovery and safety of black powder in battery material.
To achieve the above object, the technical scheme adopted by the invention is as follows: it is a kind of for screening the dress of black powder in old and useless battery
It sets comprising primary breakup equipment, the discharge end of the primary breakup equipment passes sequentially through jigging conveyer, the first whirlwind gathers materials
Device is connected with the first sorting machine, and the discharge end of first sorting machine is connected with drying equipment in turn by the first conveyer, removes
Iron equipment and the first vibrating screening machine, the discharge end of the first vibrating screening machine are connected with secondary breakup in turn by second conveyor
The discharge end of machine and the second vibrating screening machine, second vibrating screening machine is connected with the second sorting by the second tornado feeder set
Machine；
Another discharge end of first sorting machine is connected with third tornado feeder set, the third whirlwind collection by pipeline
The discharge end of material is connected with third vibrating screening machine and powder remover in turn, first vibrating screening machine, the second vibrating screening machine,
The discharge end of second sorting machine, third vibrating screening machine and powder remover also passes through pipeline and is connected with the 4th tornado feeder set, described
The discharge end that 4th whirlwind gathers materials is connected with storage hopper；First tornado feeder set, the second tornado feeder set, third whirlwind collection
Glassware and the 4th tornado feeder set are each equipped with high pressure blower (transmitting the materials such as black powder by negative pressure).
As an improvement of the above technical solution, primary breakup equipment includes third conveyer and the 4th conveyer, and described
The discharge end of three conveyers is connected with the first crusher and the second crusher in turn, and the discharge end of the 4th conveyer is connected with
The discharge end of third crusher, second crusher connects the charging of the jigging conveyer with the discharge end of third crusher
End.
As a further improvement of the above technical scheme, the third crusher is hammer crusher.
As an improvement of the above technical solution, the equipment for removing ferric ion includes band magnetic roller belt conveyor, the band magnetic roller skin
Magnetic separator is installed on band conveyer.
As an improvement of the above technical solution, the inner passage of first sorting machine is in Z-shaped, second sorting machine
For airflow separator.
As an improvement of the above technical solution, the crushing plant is arranged in fire-proof sound insulation board house, to improve safety
Property.
As an improvement of the above technical solution, the secondary breaker is fine hammer leaf crusher, and the fine hammer leaf is broken
Broken machine power is 90kw；It is sufficiently crushed black powder and other impurities to come.
In addition, the present invention also provides the screening technologies of the device, successively the following steps are included:
S1) primary breakup machine equipment is crushed battery, jigging conveyer by tab mixture, black powder mixture and every
Film mixture is successively delivered to the first tornado feeder set and the first sorting machine；
S2) the tab mixture filtered out is delivered to drying equipment by the first conveyer by the first sorting machine, and will be black
Powder mixture and diaphragm mixture are delivered to third tornado feeder set (passing through negative pressure)；Drying equipment dries tab mixture, dries
Tab mixture after dry is delivered to equipment for removing ferric ion, and equipment for removing ferric ion removes iron in tab mixture；The tab mixture of de-iron is defeated
It send to the first vibrating screening machine, the tab mixture that the first vibrating screening machine filters out is delivered to secondary breaker, the first vibration
The black powder that sifted is selected is delivered to storage hopper；Secondary breakup crusher machine tab mixture, broken tab mixture conveying
To the second vibrating screening machine, the second vibrating screening machine filters out tab mixture and is delivered to the second sorting machine, the second vibrosieve
The black powder that machine and the second sorting machine filter out is delivered to storage hopper；
S3 the black powder mixture and diaphragm mixture that) third tornado feeder set filters out are delivered to third vibrating screening machine,
The diaphragm mixture that third vibrating screening machine filters out is delivered to powder remover, and third vibrating screening machine and powder remover filter out black
Powder is delivered to storage hopper.
As an improvement of the above technical solution, primary breakup equipment includes third conveyer and the 4th conveyer, and third is defeated
Send machine that soft shell battery or the hard shell battery in addition to steel shell battery are successively delivered to the first crusher and the second crusher, first is broken
Broken machine and the second crusher are crushed, and steel shell battery is delivered to third crusher by the 4th conveyer, and third crusher carries out
It is broken；Tab mixture, black powder mixture and diaphragm mixture are delivered to jigging conveyer.
As an improvement of the above technical solution, temperature is 300 DEG C in drying equipment.
The beneficial effects of the present invention are: the present invention provides a kind of for screening the device and its work of black powder in old and useless battery
Skill, apparatus of the present invention include primary breakup equipment, the first sorting machine, drying equipment, equipment for removing ferric ion, the first vibrating screening machine, secondary
Grade crusher, the second vibrating screening machine, the second sorting machine, third vibrating screening machine and powder remover, have the advantage that 1) more
Grade is broken to be sufficiently separated out black powder and other mixtures, and 2) drying equipment progress high temperature drying electrolyte, adhesive, improve life
Produce safety, 3) multi-stage screening is used, it is ensured that the black powder rate of recovery >=98%, copper content≤1% in black powder, aluminium content in black powder≤
2%, 4) for primary breakup equipment using two crushing production lines, a production line is to be crushed soft shell battery or in addition to steel shell battery
Hard shell battery, another production line are broken steel shell batteries, are convenient for being crushed a variety of various forms of batteries in this way.
Detailed description of the invention
Fig. 1 is the process flow diagram of black powder in screening old and useless battery of the present invention；
Fig. 2 is a kind of structural schematic diagram of the present invention for screening the device of black powder in old and useless battery (for being crushed
Soft shell battery or the hard shell battery in addition to steel shell battery)；
Fig. 3 is another structural schematic diagram of the present invention for screening the device of black powder in old and useless battery (for breaking
Broken machine steel shell battery only shows primary breakup equipment etc. in figure, other are identical as Fig. 2)；
In figure, 1, jigging conveyer, 111, third conveyer, the 112, first crusher, the 113, second crusher, 121,
Four conveyers, 122, third crusher, 13, fire-proof sound insulation board house, the 2, first tornado feeder set, the 21, second tornado feeder set,
22, third tornado feeder set, the 23, the 4th tornado feeder set, the 3, first conveyer, 31, second conveyor, 4, equipment for removing ferric ion, 5,
Drying equipment, the 6, first vibrating screening machine, the 61, second vibrating screening machine, 62, third vibrating screening machine, 7, secondary breaker, 8,
First sorting machine, the 81, second sorting machine, 9, powder remover, 91, storage hopper.
Specific embodiment
Purposes, technical schemes and advantages in order to better illustrate the present invention, below in conjunction with specific embodiments and the drawings pair
The present invention is described further.
It should be understood that various information are described in the present invention using term " first ", " second " etc., but these information
It should not necessarily be limited by these terms, these terms are only used to for same type of information being distinguished from each other out.For example, not departing from the present invention
In the case where range, " first " information can also be referred to as " second " information, and similar, " second " information can also be referred to as
" first " information.
Embodiment 1
The present embodiment provides a kind of for screening the device of black powder in old and useless battery, as shown in Figures 1 to 3 comprising primary
Crushing plant, the discharge end of primary breakup equipment passes sequentially through jigging conveyer 1, the first tornado feeder set 2 is connected with first point
Machine 8 is selected, the discharge end of the first sorting machine 8 is connected with drying equipment 5, equipment for removing ferric ion 4 and the first vibration in turn by the first conveyer 3
The discharge end of dynamic screening machine 6, the first vibrating screening machine 6 is connected with secondary breaker 7 and the second vibration by second conveyor 31
The discharge end of screening machine 61, the second vibrating screening machine 61 is connected with the second sorting machine 81 by the second tornado feeder set 21；
Another discharge end of first sorting machine 8 is connected with third tornado feeder set 22 by pipeline, and third whirlwind gathers materials 22
Discharge end be connected with third vibrating screening machine 62 and powder remover 9 in turn, the first vibrating screening machine 6, the second vibrating screening machine 61,
The discharge end of second sorting machine 81, third vibrating screening machine 62 and powder remover 9 also passes through pipeline and is connected with the 4th tornado feeder set
23, gather materials 23 discharge end of the 4th whirlwind is connected with storage hopper 91；First tornado feeder set 2, the second tornado feeder set 21, third
Tornado feeder set 22 and the 4th tornado feeder set 23 are each equipped with high pressure blower.
In order to be crushed a variety of various forms of batteries, it is preferable that primary breakup equipment includes third conveyer 111 and the 4th
Conveyer 121, the discharge end of third conveyer 111 are connected with the first crusher 112 and the second crusher 113 in turn, and the 4th is defeated
The discharge end of machine 121 is sent to be connected with third crusher 122 in turn, the discharge end of the second crusher 113 and third crusher 122
The feed end of discharge end connection jigging conveyer 1.
For sufficiently broken steel shell battery, it is preferable that third crusher 122 is hammer crusher.
In order to sufficiently remove iron, it is preferable that equipment for removing ferric ion 4 includes band magnetic roller belt conveyor, on magnetic roller belt conveyor
Magnetic separator is installed.
In order to sufficiently be sorted to obtain more pure black powder, it is preferable that 8 inner passage of the first sorting machine is in Z-shaped,
Second sorting machine 81 is airflow separator.
In order to improve safety, it is preferable that crushing plant is arranged in fire-proof sound insulation board house 13.
It comes to more sufficiently be crushed black powder and other impurities, secondary breaker 7 is fine hammer leaf crusher, fine to hammer into shape
Piece crusher power is 90kw.
Embodiment 2
The present embodiment also provides the screening technology of device described in embodiment 1, successively includes following as shown in Figures 1 to 3
Step:
S1) primary breakup machine equipment is crushed battery, jigging conveyer 1 by tab mixture, black powder mixture and
Diaphragm mixture is delivered to the first tornado feeder set 2 and the first sorting machine 8；
S2) the tab mixture filtered out is delivered to drying equipment 5 by the first conveyer 3 by the first sorting machine 8, and is incited somebody to action
Black powder mixture and diaphragm mixture are delivered to third tornado feeder set 22；Drying equipment 5 dries tab mixture, after drying
Tab mixture is delivered to equipment for removing ferric ion 4, and equipment for removing ferric ion 4 removes iron in tab mixture；The tab mixture of de-iron is delivered to
First vibrating screening machine 6, the tab mixture that the first vibrating screening machine 6 filters out are delivered to secondary breaker 7, the first vibrating screen
The black powder that extension set 6 filters out is delivered to storage hopper 91；Secondary breaker 7 is crushed tab mixture, and broken tab mixture is defeated
It sending to the second vibrating screening machine 61, the second vibrating screening machine 61 filters out tab mixture and is delivered to the second sorting machine 81, and second
The black powder that vibrating screening machine 61 and the second sorting machine 81 filter out is delivered to storage hopper 91；
S3 the black powder mixture and diaphragm mixture that) third tornado feeder set 22 filters out are delivered to third vibrating screening machine
62, the diaphragm mixture that third vibrating screening machine 62 filters out is delivered to powder remover 9, third vibrating screening machine 62 and powder remover 9
The black powder filtered out is delivered to storage hopper 91, and powder remover, which recycles diaphragm and increases, respects economic benefit；
Wherein, primary breakup equipment includes third conveyer 111 and the 4th conveyer 121, and third conveyer 111 is by soft shell
Battery or the hard shell battery in addition to steel shell battery are successively delivered to the first crusher 112 and the second crusher 113, the first crusher
112 and second crusher 113 be crushed, steel shell battery is delivered to third crusher 122 by the 4th conveyer 121, and third is broken
Broken machine 122 is crushed；Tab mixture, black powder mixture and diaphragm mixture are delivered to jigging conveyer 1；Drying equipment 5
Interior temperature is 300 DEG C.
Using apparatus of the present invention, the black powder rate of recovery >=98%, copper content≤1% in black powder, aluminium content≤2% in black powder.
Finally, it should be noted that above embodiments protect the present invention to illustrate technical solution of the present invention
The limitation of range, although the invention is described in detail with reference to the preferred embodiments, those skilled in the art should be managed
Solution, can modify to technical solution of the present invention or replace on an equal basis, without departing from technical solution of the present invention essence and
Range.
Claims (10)
1. a kind of for screening the device of black powder in old and useless battery, which is characterized in that described primary broken including primary breakup equipment
The discharge end of broken equipment passes sequentially through jigging conveyer, the first tornado feeder set is connected with the first sorting machine, first sorting
The discharge end of machine is connected with drying equipment, equipment for removing ferric ion and the first vibrating screening machine, the first vibration in turn by the first conveyer
The discharge end of screening machine is connected with secondary breaker and the second vibrating screening machine, second vibration in turn by second conveyor
The discharge end of screening machine is connected with the second sorting machine by the second tornado feeder set；
Another discharge end of first sorting machine is connected with third tornado feeder set by pipeline, what the third whirlwind gathered materials
Discharge end is connected with third vibrating screening machine and powder remover, first vibrating screening machine, the second vibrating screening machine, second in turn
The discharge end of sorting machine, third vibrating screening machine and powder remover also passes through pipeline and is connected with the 4th tornado feeder set, and the described 4th
The discharge end that whirlwind gathers materials is connected with storage hopper；First tornado feeder set, the second tornado feeder set, third tornado feeder set
High pressure blower is each equipped with the 4th tornado feeder set.
2. device as described in claim 1, which is characterized in that primary breakup equipment includes third conveyer and the 4th conveying
Machine, the discharge end of the third conveyer are connected with the first crusher and the second crusher in turn, and the 4th conveyer goes out
Material end is connected with third crusher, and it is defeated that the discharge end of second crusher connects the vibration with the discharge end of third crusher
Send the feed end of machine.
3. device as claimed in claim 2, which is characterized in that the third crusher is hammer crusher.
4. device as described in claim 1, which is characterized in that the equipment for removing ferric ion includes band magnetic roller belt conveyor, described
Magnetic separator is installed on band magnetic roller belt conveyor.
5. device as described in claim 1, which is characterized in that the inner passage of first sorting machine is in Z-shaped, and described the
Two sorting machines are airflow separator.
6. device as described in claim 1, which is characterized in that the crushing plant is arranged in fire-proof sound insulation board house.
7. device as described in claim 1, which is characterized in that the secondary breaker is fine hammer leaf crusher, the essence
Thin hammer leaf crusher power is 90kw.
8. as weigh the described in any item devices of claim 1~7 screening technology, which is characterized in that successively the following steps are included:
S1) primary breakup machine equipment is crushed battery, and jigging conveyer mixes tab mixture, black powder mixture and diaphragm
It closes object and is successively delivered to the first tornado feeder set and the first sorting machine；
S2) the tab mixture filtered out is delivered to drying equipment by the first conveyer by the first sorting machine, and black powder is mixed
It closes object and diaphragm mixture is delivered to third tornado feeder set；Drying equipment dries tab mixture, the tab mixing after drying
Object is delivered to equipment for removing ferric ion, and equipment for removing ferric ion removes iron in tab mixture；The tab mixture of de-iron is delivered to the first vibrating screen
Extension set, the tab mixture that the first vibrating screening machine filters out are delivered to secondary breaker, what the first vibrating screening machine filtered out
Black powder is delivered to storage hopper；Secondary breakup crusher machine tab mixture, broken tab mixture are delivered to the second vibrosieve
Machine, the second vibrating screening machine filter out tab mixture and are delivered to the second sorting machine, the second vibrating screening machine and the second sorting machine
The black powder filtered out is delivered to storage hopper；
S3 the black powder mixture and diaphragm mixture that) third tornado feeder set filters out are delivered to third vibrating screening machine, third
The diaphragm mixture that vibrating screening machine filters out is delivered to powder remover, and the black powder that third vibrating screening machine and powder remover filter out is defeated
It send to storage hopper.
9. screening technology as claimed in claim 8, which is characterized in that primary breakup equipment includes that third conveyer and the 4th are defeated
Machine is sent, soft shell battery or the hard shell battery in addition to steel shell battery are successively delivered to the first crusher and second and broken by third conveyer
Broken machine, the first crusher and the second crusher are crushed, and steel shell battery is delivered to third crusher, third by the 4th conveyer
Crusher is crushed；Tab mixture, black powder mixture and diaphragm mixture are delivered to jigging conveyer.
10. screening technology as claimed in claim 8, which is characterized in that temperature is 300 DEG C in drying equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274922.4A CN109985713A (en) | 2019-04-04 | 2019-04-04 | It is a kind of for screening the device and its technique of black powder in old and useless battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910274922.4A CN109985713A (en) | 2019-04-04 | 2019-04-04 | It is a kind of for screening the device and its technique of black powder in old and useless battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109985713A true CN109985713A (en) | 2019-07-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910274922.4A Pending CN109985713A (en) | 2019-04-04 | 2019-04-04 | It is a kind of for screening the device and its technique of black powder in old and useless battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110694771A (en) * | 2019-10-12 | 2020-01-17 | 福建常青新能源科技有限公司 | Flexible airflow powder removing method for waste ternary lithium battery |
| CN112108377A (en) * | 2020-09-29 | 2020-12-22 | 美新源环保产业有限公司 | Processing technology and processing equipment for crushing and sorting batteries |
| CN113113691A (en) * | 2021-04-06 | 2021-07-13 | 浙江天能新材料有限公司 | Dry-method powder removing equipment for waste lithium ion battery diaphragm |
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