CN105470579B - A kind of device and method that magnetic foreign body is removed for lithium battery material - Google Patents
A kind of device and method that magnetic foreign body is removed for lithium battery material Download PDFInfo
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- CN105470579B CN105470579B CN201510848937.9A CN201510848937A CN105470579B CN 105470579 B CN105470579 B CN 105470579B CN 201510848937 A CN201510848937 A CN 201510848937A CN 105470579 B CN105470579 B CN 105470579B
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- Prior art keywords
- magnetic
- foreign body
- magnetic foreign
- bar magnet
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
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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
- 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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- Engineering & Computer Science (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)
Abstract
The invention discloses a kind of apparatus and method that magnetic foreign body is removed for lithium battery material.The device includes housing, removes magnetic cavity, installed in the multiple cylinders removed in magnetic cavity, the bar magnet being inserted in each cylinder by what magnetic sheet was formed, and inlet and liquid outlet are had at the top and bottom of magnetic cavity in described remove.The method of the present invention is from the inlet entrance except magnetic foreign body device, then during by bar magnet and magnetic sheet, the magnetic foreign body in liquid charging stock or slurry will be held, and will not enter next process；If magnetic foreign body content is not reaching to index request, it can circulate and carry out removing magnetic foreign body.The present invention can efficiently reduce the magnetic foreign body content in liquid charging stock or slurry.
Description
Technical field
The present invention relates to lithium battery preparation field, and magnetic foreign body in lithium ion battery material is removed more particularly to a kind of
Apparatus and method.
Background technology
The presence of magnetic foreign body brings very big hidden danger, the product of lithium ion battery material to the security performance of lithium battery
The control of quality particularly magnetic foreign body is the key for solving lithium ion battery safety problem.At present, lithium ion battery material pair
The requirement of magnetic foreign body is very high, and requirement of the domestic battery producer to anode material of lithium battery magnetic foreign body content is generally
100ppb or so, high end cells producer are generally a 50ppb left sides to the magnetic foreign body content requirement in anode material for lithium-ion batteries
The right side, requirement of the external electrokinetic cell company to magnetic foreign body content in anode material for lithium-ion batteries are then higher.So producing
During must in strict control lithium ion battery material magnetic foreign body particle size, species and total content, magnetic foreign body contains
The height of amount is the major criterion for weighing anode material for lithium-ion batteries quality height.It is existing except magnetic foreign body equipment is mainly
Electromagnetism removes magnetic machine, and principle is by removing magnetic foreign body equipment to magnetic excitation that the magnetic in powder body material or liquid is different
Thing is adsorbed, and then carries out demagnetization to magnetic, and magnetic foreign body is rinsed from magnetic and discharges magnetic foreign body, and magnetic
Material is mainly stainless steel material, and during material is handled, with the change of material properties, long-term use pair may be set
Standby material causes to corrode, it is difficult to ensure that removing magnetic foreign body effect to material；Secondly, electromagnetism removes generates heat in the magnetic machine course of work
Amount is big, energy consumption is higher, in type selecting because partial material characteristic is restricted；Finally, most of powder body materials are set by strong magnetic
Make preparation for dropping low magnetic foreign body content, magnetic foreign body content is it is generally advisable to control in 50ppb or so at present, and is removed by dry method
Magnetic foreign body, product direct yield will not be very high.
The content of the invention
The purpose of the present invention is the problem of presence for prior art, there is provided one kind removes magnetic in lithium ion battery material
The apparatus and method of foreign matter.
The present invention adopts the following technical scheme that：
A kind of device that magnetic foreign body is removed for lithium battery material, it is characterised in that described device includes housing, by magnetic sheet
What is formed removes magnetic cavity, installed in the multiple cylinders removed in magnetic cavity, the bar magnet being inserted in each cylinder, is removed described
Inlet and liquid outlet are had at the top and bottom of magnetic cavity.
According to above-mentioned device, it is characterised in that it is described except magnetic cavity is made up of polylith magnetic sheet, and section assumes diamond in shape.
According to above-mentioned device, it is characterised in that the bottom of each cylinder be equipped with it is horizontal at an angle
Deflector.
According to above-mentioned device, it is characterised in that interlayer is provided with the housing, the magnetic sheet is arranged on the interlayer
It is interior.
According to above-mentioned device, it is characterised in that the cylinder and interlayer are non-metallic material.
According to above-mentioned device, it is characterised in that the magnetic field intensity of each bar magnet is 12000Gs.
According to above-mentioned device, it is characterized in that, described bar magnet is that layout designs are diamond shaped, the center of each row's bar magnet
Apart from equal, the centre distance per a line bar magnet is equal.
According to above-mentioned device, it is characterised in that the magnetic field intensity of every piece of magnetic sheet is 4000Gs.
According to above-mentioned device, it is characterised in that the bottom of the shell and level are in certain inclination angle.
According to above-mentioned device, it is characterized in that, the non-metallic material is polypropylene material.
It is a kind of that the method that lithium battery material removes magnetic foreign body is carried out using said apparatus, it is characterised in that methods described is
Will liquid charging stock or slurry from inlet flow into it is described remove magnetic foreign body device, from liquid outlet collection handle after liquid charging stock or
Slurry.
Beneficial effects of the present invention：Magnetic foreign body device is removed in the embodiment of the present invention, bar magnet and magnetic are installed inside it
Plate, liquid charging stock or slurry, which flow into, removes magnetic foreign body device, the magnetic foreign body in adsorbable liquid charging stock or slurry（Iron, zinc,
Chromium, nickel）.Magnetic foreign body content in liquid charging stock or slurry can be efficiently reduced using the present apparatus, is effectively prevented different in raw material
Thing particularly magnetic foreign body is entered in product, it is possible to improves the quality of product.The raw material of lithium ion battery presoma production
Neutralize in the production of positive electrode and remove magnetic foreign body device using above-mentioned, it is possible to improve the quality of product.
Brief description of the drawings
Fig. 1 is the present invention except the diagrammatic cross-section of magnetic foreign body device；
Fig. 2 is the present invention except the left view profile of magnetic foreign body device.
Embodiment
Referring to Fig. 1 and Fig. 2, of the invention is used for lithium battery material except the device of magnetic foreign body includes housing 6, by magnetic sheet 2
What is formed removes magnetic cavity 7, multiple cylinders 3 in except magnetic cavity 7, the bar magnet 1 being inserted in each cylinder 3, except magnetic cavity 7
Top and bottom have inlet 8 and liquid outlet 9, and feed tube and drain pipe, the feed tube of shell are additionally provided with shell
Part forms funnel-form with interlayer 4（As shown in Figure 1）.Cylinder can be fixed on except the side wall in magnetic foreign body device.Each circle
The bottom of cylinder 3 can be provided with and horizontal deflector 5 at an angle.Magnetic sheet may be mounted in the interlayer 4 set in housing.Circle
Cylinder 3 and interlayer 4, and other parts contacted with liquid are non-metallic material, preferably polypropylene material.Housing 6 is also excellent
Elect polypropylene material as.To make except no backup in magnetic foreign body device, bottom and the level of shell are in certain inclination angle.
Except magnetic cavity can be made up of polylith magnetic sheet, and section assumes diamond in shape.The layout of bar magnet 1 is also configured as diamond shaped, Mei Yipai
The centre distance of bar magnet is equal, and the centre distance per a line bar magnet is equal.The magnetic field intensity of each bar magnet 1 is preferably 12000Gs.
The magnetic field intensity of every piece of magnetic sheet is preferably 4000Gs.
The method of the present invention is from the inlet entrance except magnetic foreign body device, then during by bar magnet and magnetic sheet, liquid is former
Magnetic foreign body in material or slurry will be held, and will not enter next process；If magnetic foreign body content is not reaching to finger
Mark requires, can circulate and carry out removing magnetic foreign body.
The magnetic foreign body that can be efficiently reduced in liquid charging stock or slurry except magnetic foreign body device provided in the present embodiment contains
Amount（Magnetic foreign body content in lithium ion battery material can be reduced to below 20ppb）, effectively prevent the foreign matter in raw material
Particularly magnetic foreign body is entered in product, it is possible to improves the quality of product.In the raw material of lithium ion battery presoma production
Magnetic foreign body device is removed using above-mentioned, it is possible to improve the quality of product with the production of positive electrode.
Claims (3)
1. a kind of device that magnetic foreign body is removed for lithium battery material, it is characterised in that described device includes housing, by magnetic sheet structure
Into except magnetic cavity, installed in multiple cylinders except in magnetic cavity, the bar magnet being inserted in each cylinder, remove magnetic described
Inlet and liquid outlet are had at the top and bottom of chamber；It is described except magnetic cavity is made up of polylith magnetic sheet, and section assumes diamond in shape；Often
The bottom of the individual cylinder is equipped with and horizontal deflector at an angle；Interlayer, the magnetic sheet are provided with the housing
In the interlayer；The cylinder and interlayer are non-metallic material；Each the magnetic field intensity of the bar magnet is
12000Gs；Bar magnet is that layout designs are diamond shaped, and the centre distance of each row's bar magnet is equal, per the centre distance of a line bar magnet
It is equal；The magnetic field intensity of every piece of magnetic sheet is 4000Gs；The bottom of the housing and level are in certain inclination angle.
2. device according to claim 1, it is characterized in that, the non-metallic material is polypropylene material.
3. a kind of carry out method of the lithium battery material except magnetic foreign body, its feature using such as one of claim 1-2 described device
It is, methods described is will to remove magnetic foreign body device described in liquid charging stock or slurry from inlet inflow, at liquid outlet collection
Liquid charging stock or slurry after reason.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848937.9A CN105470579B (en) | 2015-11-30 | 2015-11-30 | A kind of device and method that magnetic foreign body is removed for lithium battery material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510848937.9A CN105470579B (en) | 2015-11-30 | 2015-11-30 | A kind of device and method that magnetic foreign body is removed for lithium battery material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105470579A CN105470579A (en) | 2016-04-06 |
| CN105470579B true CN105470579B (en) | 2018-02-02 |
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| CN201510848937.9A Active CN105470579B (en) | 2015-11-30 | 2015-11-30 | A kind of device and method that magnetic foreign body is removed for lithium battery material |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018119985A1 (en) * | 2016-12-30 | 2018-07-05 | 深圳市玖创科技有限公司 | Battery anode material mixing apparatus with demagnetization device |
| CN109012962A (en) * | 2017-03-27 | 2018-12-18 | 陈萍 | A kind of solid-liquid electrode material is dual-purpose to remove magnetic powder crushing device |
| CN107884244A (en) * | 2017-11-24 | 2018-04-06 | 广东佳纳能源科技有限公司 | A kind of magnetic foreign body extraction equipment and method |
| CN113617518B (en) * | 2021-06-28 | 2023-12-15 | 北京当升材料科技股份有限公司 | Method for removing magnetic foreign matters in high-iron material of lithium battery anode material by wet method |
| CN114130736B (en) * | 2021-11-09 | 2022-11-11 | 武汉惠强新能源材料科技有限公司 | Device for automatically separating magnetic substances |
| CN115739391A (en) * | 2022-11-21 | 2023-03-07 | 宜昌邦普循环科技有限公司 | Magnetic rod foreign matter cleaning device and magnetic rod foreign matter cleaning method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201592136U (en) * | 2009-12-29 | 2010-09-29 | 宁波科宁达工业有限公司 | Device for clearing away magnetic substances in slurry |
| JP5799580B2 (en) * | 2011-05-23 | 2015-10-28 | 日立化成株式会社 | Magnetic separator, method for removing magnetic impurities, and method for manufacturing lithium ion secondary battery |
| CN202555384U (en) * | 2012-04-06 | 2012-11-28 | 中材江苏太阳能新材料有限公司 | Box type permanent magnetic separator |
| CN103506217A (en) * | 2012-06-22 | 2014-01-15 | 中山天贸电池有限公司 | Slurry demagnetizing device for battery production |
| CN104835944B (en) * | 2015-04-23 | 2017-08-04 | 金川集团股份有限公司 | It is a kind of to reduce the method and device of anode material for lithium-ion batteries magnetic foreign body content |
| CN205282583U (en) * | 2015-11-30 | 2016-06-01 | 金川集团股份有限公司 | A device that is used for lithium battery materials to remove magnetism foreign matter |
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