CN111969223A - Element extraction process and device for recycling waste lithium batteries - Google Patents

Element extraction process and device for recycling waste lithium batteries Download PDF

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Publication number
CN111969223A
CN111969223A CN202010669214.3A CN202010669214A CN111969223A CN 111969223 A CN111969223 A CN 111969223A CN 202010669214 A CN202010669214 A CN 202010669214A CN 111969223 A CN111969223 A CN 111969223A
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CN
China
Prior art keywords
lithium batteries
fixedly connected
waste lithium
processing
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010669214.3A
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Chinese (zh)
Other versions
CN111969223B (en
Inventor
朱建楠
任永刚
孙朝军
叶明刚
姚送送
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui Nandu Huabo New Material Technology Co ltd
Jieshou Nandu Huayu Power Source Co Ltd
Original Assignee
Anhui Nandu Huabo New Material Technology Co ltd
Jieshou Nandu Huayu Power Source Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui Nandu Huabo New Material Technology Co ltd, Jieshou Nandu Huayu Power Source Co Ltd filed Critical Anhui Nandu Huabo New Material Technology Co ltd
Priority to CN202010669214.3A priority Critical patent/CN111969223B/en
Publication of CN111969223A publication Critical patent/CN111969223A/en
Application granted granted Critical
Publication of CN111969223B publication Critical patent/CN111969223B/en
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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00Primary cells; Manufacture thereof
    • H01M6/52Reclaiming serviceable parts of waste cells or batteries, e.g. recycling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/01Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with flat filtering elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00Cleaning by methods involving the use of tools, brushes, or analogous members
    • B08B1/001Cleaning by methods involving the use of tools, brushes, or analogous members characterised by the type of cleaning tool
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00Cleaning by methods involving the use of tools, brushes, or analogous members
    • B08B1/02Cleaning travelling work, e.g. a web, articles on a conveyor
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/84Recycling of batteries or fuel cells

Abstract

The invention discloses an element extraction process and a device thereof for recovering waste lithium batteries, wherein the element extraction process comprises the following specific steps; the waste lithium batteries are put into the feeding cover and then fall into a processing groove of the processing plate, the rotating rod is rotated by the motor, the rotating rod is rotated in the rotating process of the rotating rod, and the waste lithium batteries are rolled in the rotating process of the rotating rod; after the waste lithium batteries are rolled and crushed, the second hydraulic rod works to realize the movement of the object carrying block, when the object carrying block moves into the accommodating groove, the rolled waste lithium batteries enter the charging box through the processing shell, the rolled waste batteries are filtered through the filter screen in the charging box, and the crushed waste battery elements are conveniently extracted.

Description

Element extraction process and device for recycling waste lithium batteries
Technical Field
The invention relates to the technical field of waste lithium battery treatment, in particular to an element extraction process and device for waste lithium battery recovery.
Background
The lithium battery is a primary battery using lithium metal or lithium alloy as a negative electrode material and using a non-aqueous electrolyte solution, unlike a lithium ion battery, which is a rechargeable battery, and a lithium ion polymer battery. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. Therefore, the lithium cell does not obtain the application for a long time, and the lithium cell is generally inconvenient to retrieve after extracting its inside element after finishing using and recycles, and the inconvenient crushing with it of present element extraction element that is used for old and useless lithium cell to retrieve, consequently brought inconvenience, increase staff's intensity of labour for the extraction of staff to old and useless lithium cell internal element.
Disclosure of Invention
The invention aims to provide an element extraction process and device for waste lithium battery recovery, and aims to solve the problems that the existing element extraction device for waste lithium battery recovery proposed in the background art is inconvenient to crush, so that inconvenience is brought to workers for extracting and recovering elements in waste lithium batteries, and the labor intensity of the workers is increased.
In order to achieve the purpose, the invention provides the following technical scheme:
an element extraction process for recovering waste lithium batteries comprises the following specific steps;
the waste lithium batteries are put into the feeding cover and then fall into a processing groove of the processing plate, the rotating rod is rotated by the motor, the rotating rod is rotated in the rotating process of the rotating rod, and the waste lithium batteries are rolled in the rotating process of the rotating rod;
after the crushing is rolled to old and useless lithium cell, the removal of carrying the thing piece is realized in the work of second hydraulic stem, when carrying the thing piece and removing to the holding tank in, realized promptly that old and useless lithium cell after rolling gets into the feed box through handling the shell in, realized the filtration to rolling back old and useless battery through the filter screen in the feed box, be convenient for to the extraction of the old and useless battery element after grinding.
An element extraction device for recovering waste lithium batteries comprises a bottom plate and a processing shell movably connected to the bottom plate;
the upper end of the processing shell is communicated with a feeding cover, the interior of the processing shell is rotatably connected with a rotating rod, a pressure rod is fixedly connected onto the rotating rod, processing plates are symmetrically and fixedly connected onto the inner side wall of the processing shell, processing grooves matched with the pressure rod are formed in the side walls of the processing plates, and a carrying block is connected in the processing grooves in a telescopic mode;
a charging box is movably inserted in the processing shell, and a filter screen is detachably connected to the inner side wall of the charging box.
As a further scheme of the invention: one end of the processing shell is rotatably connected to the upper surface of the bottom plate.
As a further scheme of the invention: the upper surface mounting of bottom plate has first hydraulic stem, the expansion end of first hydraulic stem is installed on handling the lateral wall of shell, and first hydraulic stem work realizes handling the relative bottom plate rotation of shell, has adjusted the position of handling the shell in handling the shell pivoted in-process.
As a further scheme of the invention: handle fixedly connected with protecting crust on the inside wall of shell, fixedly connected with motor on the inside wall of protecting crust, the drive shaft of motor pass the lateral wall of protecting crust and with dwang fixed connection, the rotation of dwang is realized in motor work, simultaneously because the guard action to the motor has been realized to the effect of protecting crust.
As a further scheme of the invention: the lateral wall of the treatment tank is provided with a containing tank, a second hydraulic rod is fixedly connected in the containing tank, the movable end of the second hydraulic rod is fixedly connected with the object carrying block, and the second hydraulic rod works to realize the movement of the object carrying block, so that the purpose of adjusting the position of the object carrying block is achieved.
As a further scheme of the invention: fixedly connected with fixed plate on the lateral wall of holding tank, the lower surface elastic connection of fixed plate has the washing board, the lower fixed surface of washing board is connected with the washing hair, the washing hair contacts with the up end of year thing piece, when carrying the thing piece to the holding tank removal, because the effect of washing hair has realized the clearance effect to carrying the thing piece upper surface.
As a further scheme of the invention: the mounting groove has been seted up to the lower surface of fixed plate, the first spring of fixedly connected with on the lateral wall of mounting groove, the lower extreme fixedly connected with connecting rod of first spring, the lower extreme and the year thing piece fixed connection of connecting rod because the removal of connecting rod is convenient for realize in the effect of first spring, are convenient for realize the removal of wasing the board at the in-process that the connecting rod removed to the position of wasing the board has been adjusted.
As a further scheme of the invention: the filter screen loading device comprises a loading box, a filter screen, a T-shaped inserting rod and a T-shaped plate, wherein the loading box is fixedly connected with the inner side wall of the loading box, the end part of the filter screen is positioned in the L-shaped plate, a containing groove is formed in the L-shaped plate, a second spring is fixedly connected in the containing groove, one end of the second spring is fixedly connected with the T-shaped inserting rod, one end of the T-shaped inserting rod penetrates through the side wall of the containing groove and is inserted into the end part of the filter screen, a worker manually pushes the T-shaped inserting rod, and when one end of the; the staff promotes T shape inserted bar, later places the filter screen on the L shaped plate, later manually loosens T shape inserted bar, because the removal of T shape inserted bar is realized to the effect of second spring, when the one end of T shape inserted bar is inserted and is established on the filter screen, has realized installing the filter screen on the L shaped plate promptly.
Compared with the prior art, the invention has the beneficial effects that:
through the processing shell of swing joint on the bottom plate, be convenient for adjust the position of handling the shell, the relative bottom plate of shell rotation is handled in the realization of first hydraulic stem work, has adjusted the position of handling the shell in handling the rotatory in-process of shell.
The rotating rod is connected to the inner part of the processing shell in a rotating mode, the rotating rod is convenient to drive the rotating rod to rotate, the rotating rod is achieved during motor work, and meanwhile the protection effect on the motor is achieved due to the effect of the protection shell.
Through setting up the washing hair in the top of carrying the thing piece, be convenient for realize the clearance to carrying the thing piece upper surface, when carrying the thing piece and removing to the holding tank, because the effect of washing hair has realized the clearance effect to carrying the thing piece upper surface.
The filter screen is detachably connected to the inner side wall of the charging box, so that the filter screen can be conveniently mounted and dismounted in the charging box, a worker manually pushes the T-shaped insertion rod, and when one end of the T-shaped insertion rod is separated from the filter screen, the worker manually upwards takes out the filter screen, so that the filter screen can be dismounted on the L-shaped plate; the staff promotes T shape inserted bar, later places the filter screen on the L shaped plate, later manually loosens T shape inserted bar, because the removal of T shape inserted bar is realized to the effect of second spring, when the one end of T shape inserted bar is inserted and is established on the filter screen, has realized installing the filter screen on the L shaped plate promptly.
When the waste lithium battery crushing device is used, a worker puts waste lithium batteries into the feeding cover and then drops the waste lithium batteries into the processing groove of the processing plate, the rotating rod is rotated by the motor, the rotating of the pressing rod is realized in the rotating process of the rotating rod, the waste lithium batteries are crushed by the pressing rod, the object carrying block is moved by the second hydraulic rod after the waste lithium batteries are crushed by rolling, when the object carrying block is moved into the accommodating groove, the waste lithium batteries after rolling enter the material loading box through the processing shell, the waste batteries after rolling are filtered by the filter screen in the material loading box, and the crushed waste battery elements are conveniently extracted.
The first hydraulic lever works to realize the rotation of the processing shell and the rotation of the cartridge in the rotating process of the processing shell, thereby being convenient for taking out the cartridge in the processing shell.
When needs are to the interior filter screen clearance of feed box, the staff manually promotes T shape inserted bar, and when the one end of T shape inserted bar broke away from on the filter screen, the staff manually upwards takes out the filter screen and can realize that the filter screen is dismantled on the L shaped plate to be convenient for to the clearance of filter screen.
The invention realizes crushing of the waste lithium battery, thereby facilitating extraction of elements of the crushed waste lithium battery by workers.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of the interior of a top plane of a process housing of the present invention;
FIG. 3 is a cross-sectional view of a treatment plate according to the present invention;
FIG. 4 is a schematic view of the connection of the fixing plate and the cleaning plate according to the present invention;
FIG. 5 is a schematic view of the interior of the cartridge of the present invention;
in the figure: 1. a base plate; 2. treating the shell; 3. a feed hood; 4. rotating the rod; 5. a pressure lever; 6. processing the plate; 7. a treatment tank; 8. carrying blocks; 9. a cartridge; 10. a filter screen; 11. a first hydraulic lever; 12. a protective shell; 13. a motor; 14. accommodating grooves; 15. a second hydraulic rod; 16. a fixing plate; 17. cleaning the plate; 18. cleaning the wool; 19. mounting grooves; 20. a first spring; 21. a connecting rod; 22. an L-shaped plate; 23. a second spring; 24. t-shaped inserted link.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, in an embodiment of the present invention, an element extraction process for recycling waste lithium batteries includes the following specific steps;
waste lithium batteries are put into the feeding cover 3 and then fall into the processing groove 7 of the processing plate 6, the rotating rod 4 is rotated by the motor 13, the rotating rod 5 is rotated in the rotating process of the rotating rod 4, and the waste lithium batteries are rolled in the rotating process of the pressing rod 5;
after the waste lithium battery is rolled and crushed, the second hydraulic rod 15 works to realize the movement of the object carrying block 8, when the object carrying block 8 moves into the accommodating groove 14, the waste lithium battery after being rolled enters the charging box 9 through the processing shell 2, the filtering of the waste battery after being rolled is realized through the filter screen 10 in the charging box 9, and the extraction of the waste battery elements after being rolled is convenient.
An element extraction device for recovering waste lithium batteries comprises a bottom plate 1 and a processing shell 2 movably connected on the bottom plate 1;
the upper end of the processing shell 2 is communicated with a feeding cover 3, the interior of the processing shell 2 is rotatably connected with a rotating rod 4, the rotating rod 4 is fixedly connected with a pressure rod 5, the inner side wall of the processing shell 2 is symmetrically and fixedly connected with a processing plate 6, the side wall of the processing plate 6 is provided with a processing groove 7 matched with the pressure rod 5, and a loading block 8 is telescopically connected in the processing groove 7;
a material loading box 9 is movably inserted in the processing shell 2, and a filter screen 10 is detachably connected on the inner side wall of the material loading box 9.
One end of the treating housing 2 is rotatably coupled to the upper surface of the base plate 1.
The upper surface mounting of bottom plate 1 has first hydraulic stem 11, and the expansion end of first hydraulic stem 11 is installed on handling the lateral wall of shell 2, and first hydraulic stem 11 work realizes handling shell 2 and rotates 1 relative bottom plate, has adjusted the position of handling shell 2 pivoted in-process.
Handle fixedly connected with protecting crust 12 on the inside wall of shell 2, fixedly connected with motor 13 on the inside wall of protecting crust 12, motor 13's drive shaft pass protecting crust 12 the lateral wall and with dwang 4 fixed connection, motor 13 work realizes the rotation of dwang 4, simultaneously because protecting crust 12's effect has realized the guard action to motor 13.
Holding tank 14 has been seted up on the lateral wall of treatment trough 7, fixedly connected with second hydraulic stem 15 in the holding tank 14, the expansion end and the thing piece 8 fixed connection of carrying of second hydraulic stem 15, the removal of thing piece 8 is carried in the work realization of second hydraulic stem 15 to reach the purpose of adjustment thing piece 8 position.
Fixedly connected with fixed plate 16 on holding tank 14's the lateral wall, the lower surface elastic connection of fixed plate 16 has cleaning plate 17, and cleaning plate 17's lower surface fixedly connected with washs hair 18, washs hair 18 and carries thing piece 8's up end and contacts, when carrying thing piece 8 to holding tank 14 removal, has realized the clearance effect to carrying thing piece 8 upper surface because the effect of washing hair 18.
Mounting groove 19 has been seted up to the lower surface of fixed plate 16, first spring 20 of fixedly connected with on the lateral wall of mounting groove 19, first spring 20's lower extreme fixedly connected with connecting rod 21, the lower extreme and the year thing piece 8 fixed connection of connecting rod 21, because the removal of connecting rod 21 is convenient for realize in the in-process that connecting rod 21 removed is convenient for wash the removal of board 17 to the position of wasing board 17 has been adjusted.
An L-shaped plate 22 is fixedly connected to the inner side wall of the charging box 9, the end portion of the filter screen 10 is located in the L-shaped plate 22, a containing groove is formed in the L-shaped plate 22, a second spring 23 is fixedly connected to the containing groove, one end of the second spring 23 is fixedly connected with a T-shaped insertion rod 24, one end of the T-shaped insertion rod 24 penetrates through the side wall of the containing groove and is inserted into the end portion of the filter screen 10, a worker manually pushes the T-shaped insertion rod 24, and when one end of the T-shaped insertion rod 24 is separated from the filter screen 10, the worker manually takes out the filter screen 10 upwards to enable the filter screen 10 to be detached from the L-shaped plate 22; the worker pushes the T-shaped insertion rod 24, then places the filter screen 10 on the L-shaped plate 22, then manually releases the T-shaped insertion rod 24, and due to the movement of the T-shaped insertion rod 24 achieved by the second spring 23, when one end of the T-shaped insertion rod 24 is inserted on the filter screen 10, the filter screen 10 is installed on the L-shaped plate 22.
When the waste lithium battery crushing device is used, a worker puts waste lithium batteries into the feeding cover 3 and then falls into the processing groove 7 of the processing plate 6, the rotating rod 4 rotates due to the work of the motor 13, the rotating of the pressing rod 5 is realized in the rotating process of the rotating rod 4, the crushing of the waste lithium batteries is realized in the rotating process of the pressing rod 5, the object carrying block 8 moves due to the work of the second hydraulic rod 15 after the waste lithium batteries are crushed, when the object carrying block 8 moves into the receiving groove 14, the crushed waste lithium batteries enter the charging box 9 through the processing shell 2, the crushed waste lithium batteries are filtered through the filter screen 10 in the charging box 9, and the crushed waste lithium batteries are convenient to extract elements.
The first hydraulic lever 11 operates to effect rotation of the process casing 2 and rotation of the cartridge 9 during rotation of the process casing 2, thereby facilitating removal of the cartridge 9 from within the process casing 2.
When the filter screen 10 in the cartridge 9 needs to be cleaned, a worker manually pushes the T-shaped insertion rod 24, and when one end of the T-shaped insertion rod 24 is separated from the filter screen 10, the worker manually takes the filter screen 10 upwards to detach the filter screen 10 from the L-shaped plate 22, so that the filter screen 10 is conveniently cleaned.
"fixedly connected" as described in the present invention means that two parts connected to each other are fixed together, typically by welding, screwing or gluing; "rotationally coupled" means that two components are coupled together and capable of relative motion.
Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.
Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (9)

1. An element extraction process for recycling waste lithium batteries is characterized by comprising the following specific steps;
waste lithium batteries are put into the feeding cover (3) and then fall into the processing groove (7) of the processing plate (6), the rotating rod (4) is rotated when the motor (13) works, the rotation of the pressing rod (5) is realized in the rotating process of the rotating rod (4), and the rolling of the waste lithium batteries is realized in the rotating process of the pressing rod (5);
after the waste lithium batteries are rolled and crushed, the second hydraulic rod (15) works to realize the movement of the object carrying block (8), when the object carrying block (8) moves into the accommodating groove (14), the waste lithium batteries after being rolled enter the charging box (9) through the processing shell (2), the filtering of the waste batteries after being rolled is realized through the filter screen (10) in the charging box (9), and the extraction of the waste battery elements after being crushed is convenient.
2. An element extraction device for recycling waste lithium batteries is characterized by comprising a bottom plate (1) and a processing shell (2) movably connected to the bottom plate (1);
the feeding cover (3) is communicated with the upper end of the processing shell (2), the rotating rod (4) is rotatably connected inside the processing shell (2), the pressing rod (5) is fixedly connected onto the rotating rod (4), the processing plates (6) are symmetrically and fixedly connected onto the inner side wall of the processing shell (2), the processing grooves (7) matched with the pressing rod (5) are formed in the side walls of the processing plates (6), and the object carrying blocks (8) are connected into the processing grooves (7) in a telescopic mode;
a charging box (9) is movably inserted in the processing shell (2), and a filter screen (10) is detachably connected to the inner side wall of the charging box (9).
3. The element extraction device for the recovery of spent lithium batteries according to claim 2, characterized in that one end of the processing shell (2) is rotatably connected to the upper surface of the bottom plate (1).
4. The element extraction device for the recovery of waste lithium batteries according to claim 2, characterized in that the upper surface of the base plate (1) is provided with a first hydraulic rod (11), and the movable end of the first hydraulic rod (11) is arranged on the outer side wall of the processing shell (2).
5. The element extraction device for recycling waste lithium batteries according to claim 2, characterized in that a protective shell (12) is fixedly connected to the inner side wall of the processing shell (2), a motor (13) is fixedly connected to the inner side wall of the protective shell (12), and a driving shaft of the motor (13) passes through the side wall of the protective shell (12) and is fixedly connected with the rotating rod (4).
6. The element extraction device for recycling waste lithium batteries according to claim 2, wherein a containing groove (14) is formed in a side wall of the processing groove (7), a second hydraulic rod (15) is fixedly connected in the containing groove (14), and a movable end of the second hydraulic rod (15) is fixedly connected with the object carrying block (8).
7. The element extraction device for recycling waste lithium batteries according to claim 6, wherein a fixing plate (16) is fixedly connected to the side wall of the accommodating groove (14), a cleaning plate (17) is elastically connected to the lower surface of the fixing plate (16), cleaning wool (18) is fixedly connected to the lower surface of the cleaning plate (17), and the cleaning wool (18) is in contact with the upper end surface of the object carrying block (8).
8. The element extraction device for recycling waste lithium batteries according to claim 7, wherein a mounting groove (19) is formed in the lower surface of the fixing plate (16), a first spring (20) is fixedly connected to the side wall of the mounting groove (19), a connecting rod (21) is fixedly connected to the lower end of the first spring (20), and the lower end of the connecting rod (21) is fixedly connected to the object carrying block (8).
9. The element extraction device for recycling waste lithium batteries according to claim 2, wherein an L-shaped plate (22) is fixedly connected to the inner side wall of the charging box (9), the end portion of the filter screen (10) is located in the L-shaped plate (22), a receiving groove is formed in the L-shaped plate (22), a second spring (23) is fixedly connected to the receiving groove, one end of the second spring (23) is fixedly connected to a T-shaped insertion rod (24), and one end of the T-shaped insertion rod (24) penetrates through the side wall of the receiving groove and is inserted into the end portion of the filter screen (10).
CN202010669214.3A 2020-07-13 2020-07-13 Element extraction process and device for recycling waste lithium batteries Active CN111969223B (en)

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Application Number Priority Date Filing Date Title
CN202010669214.3A CN111969223B (en) 2020-07-13 2020-07-13 Element extraction process and device for recycling waste lithium batteries

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CN111969223B CN111969223B (en) 2021-09-21

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