CN105576312B - The method for recycling the positive and negative anodes mixture of waste and old lithium ion battery - Google Patents
The method for recycling the positive and negative anodes mixture of waste and old lithium ion battery Download PDFInfo
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- CN105576312B CN105576312B CN201410522975.0A CN201410522975A CN105576312B CN 105576312 B CN105576312 B CN 105576312B CN 201410522975 A CN201410522975 A CN 201410522975A CN 105576312 B CN105576312 B CN 105576312B
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- 238000000034 method Methods 0.000 title claims abstract description 55
- 239000000203 mixture Substances 0.000 title claims abstract description 38
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 33
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000004064 recycling Methods 0.000 title claims abstract description 28
- 239000002699 waste material Substances 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 91
- 239000012065 filter cake Substances 0.000 claims abstract description 32
- 239000000706 filtrate Substances 0.000 claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007767 bonding agent Substances 0.000 claims abstract description 13
- 238000004090 dissolution Methods 0.000 claims abstract description 13
- 239000011553 magnetic fluid Substances 0.000 claims abstract description 11
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 239000011344 liquid material Substances 0.000 claims abstract description 5
- 239000007773 negative electrode material Substances 0.000 claims description 29
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 11
- XTEGARKTQYYJKE-UHFFFAOYSA-M Chlorate Chemical compound [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 4
- 239000005030 aluminium foil Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 239000011833 salt mixture Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- 239000007774 positive electrode material Substances 0.000 claims 2
- 239000010406 cathode material Substances 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 239000007772 electrode material Substances 0.000 abstract description 9
- 238000001914 filtration Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/84—Recycling of batteries or fuel cells
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- Secondary Cells (AREA)
- Primary Cells (AREA)
Abstract
The present invention relates to the methods of the positive and negative anodes mixture of recycling waste and old lithium ion battery, the method is to first pass through jigging or magnetic fluid separating method to separate anode and cathode, then isolated positive or negative pole is respectively put into high-temp liquid, enter electrode material in high-temp liquid from separating on electrode current collecting body, then water is added into high-temp liquid, dissolution filter is carried out, the filter cake containing only electrode current collecting body and the mixed filtrate containing high-temp liquid and electrode material are obtained；Alternatively, the mixture filter cake containing electrode material and electrode current collecting body is obtained by filtration and containing the filtrate of high-temp liquid；The temperature of the high-temp liquid is not less than the separation or decomposition temperature of the bonding agent for the electrode material that is adhesively fixed.The method of the present invention has many advantages, such as separative efficiency height, simple process, environmental protection, at low cost, can solve the problems, such as the pollution and recycling of waste lithium ion.
Description
Technical field
The present invention relates to the recovery methods of old and useless battery, are the positive and negative anodes for being related to recycling waste and old lithium ion battery specifically
The method of mixture.
Background technique
Now due to scrapping for electronic product is more and more, the learies of the lithium ion battery for electronic product are also more next
Bigger, how recycling environmental protection recycling lithium ion battery is also more and more important.The key for recycling lithium ion battery is to recycle wherein
Anode, cathode, in the prior art about the related recovery technology of lithium ion battery, such as: Chinese patent application
CN01130735.8, it is entitled " from used Li ion cell recycle metal method " invention in disclose a kind of recycling
Method uses high temperature furnace in removal process and roasts although the invention can also achieve the purpose that recycling wherein metal, and
Additionally use the means that sour corrosion is added, not only create new environmental pollution in removal process, and it is at high cost, technique is multiple
It is miscellaneous, be not suitable for scale recycling and require！Therefore, a kind of money high-efficient, pollution-free, at low cost about lithium ion battery is researched and developed
Source environmental protection recycling method will there is important value and society to anticipate the pollution and recycling for solving the problems, such as waste lithium ion
Justice.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of recycling high-efficient, pollution-free, at low cost is provided
The method of the positive and negative anodes mixture of waste and old lithium ion battery, to solve the problems, such as the pollution and recycling of waste lithium ion.
To achieve the above object, the present invention adopts the following technical scheme:
A method of the positive and negative anodes mixture of recycling waste and old lithium ion battery is to be directed to use existing mature technology will
After lithium ion battery is broken, the positive and negative anodes mixture therefrom isolated includes anode and cathode in the positive and negative anodes mixture,
The anode includes positive electrode and plus plate current-collecting body, and the cathode includes negative electrode material and negative current collector；Described
Recovery method includes the following steps:
1. anode and cathode are separated by jigging or magnetic fluid separating method: due to the specific gravity of anode and cathode
There is biggish difference, therefore can be separated anode and cathode by jigging or magnetic fluid separating method；
2. isolated anode is put into high-temp liquid, make positive electrode from just by the heat effect of high-temp liquid
It is separated on the collector of pole, water is then added into high-temp liquid, carried out dissolution filter, obtain the filter containing only plus plate current-collecting body
Cake and mixed filtrate containing high-temp liquid and positive electrode；Cleaning, drying is carried out to obtained filter cake to get anode collection is arrived
Body；To the mixed filtrate containing high-temp liquid and positive electrode carry out secondary filter to get to the filter cake containing positive electrode and
Filtrate containing high-temp liquid；The temperature of the high-temp liquid is not less than point of the bonding agent for the positive electrode that is adhesively fixed
From or decomposition temperature；
3. isolated cathode is put into high-temp liquid, make negative electrode material from negative by the heat effect of high-temp liquid
It is separated on the collector of pole, water is then added into high-temp liquid, carried out dissolution filter, obtain the filter containing only negative current collector
Cake and mixed filtrate containing high-temp liquid and negative electrode material；Cleaning, drying is carried out to obtained filter cake to get negative pole currect collecting is arrived
Body；To the mixed filtrate containing high-temp liquid and negative electrode material carry out secondary filter to get to the filter cake containing negative electrode material and
Filtrate containing high-temp liquid；The temperature of the high-temp liquid is not less than point of the bonding agent for the negative electrode material that is adhesively fixed
From or decomposition temperature.
The method of the positive and negative anodes mixture of another recycling waste and old lithium ion battery provided by the present invention, and for adopting
After lithium ion battery is crushed with existing mature technology, the positive and negative anodes mixture therefrom isolated, the positive and negative anodes mixing
In object include anode and cathode, the anode include positive electrode and plus plate current-collecting body, the cathode includes negative electrode material
And negative current collector；The recovery method includes the following steps:
1. anode and cathode are separated by jigging or magnetic fluid separating method: due to the specific gravity of anode and cathode
There is biggish difference, therefore can be separated anode and cathode by jigging or magnetic fluid separating method；
2. isolated anode is put into high-temp liquid, make positive electrode from just by the heat effect of high-temp liquid
It is separated on the collector of pole, water is then added into high-temp liquid, carried out dissolution filter, obtain containing positive electrode and anode
The mixture filter cake of collector and filtrate containing high-temp liquid；It is carried out again after carrying out cleaning, drying to obtained mixture filter cake
Separating treatment (such as: screening or selection by winnowing processing) to get arrive isolated positive electrode and plus plate current-collecting body；The high-temp liquid
Temperature is not less than the separation or decomposition temperature of the bonding agent for the positive electrode that is adhesively fixed；
3. isolated cathode is put into high-temp liquid, make negative electrode material from negative by the heat effect of high-temp liquid
It is separated on the collector of pole, water is then added into high-temp liquid, carried out dissolution filter, obtain containing negative electrode material and cathode
The mixture filter cake of collector and filtrate containing high-temp liquid；It is carried out again after carrying out cleaning, drying to obtained mixture filter cake
Separating treatment (such as: screening or selection by winnowing processing) to get arrive isolated negative electrode material and negative current collector；The high-temp liquid
Temperature is not less than the separation or decomposition temperature of the bonding agent for the negative electrode material that is adhesively fixed.
Since electrode material is powdered, and electrode current collecting body is graininess or sheet, therefore can be by adjusting filtering
The mesh size of net realizes above two scheme.
The method of the positive and negative anodes mixture of recycling waste and old lithium ion battery of the present invention also has following improvement project:
1, separation net is provided in the container for holding high-temp liquid；It can will be in granular form by separation net or the electricity of sheet
Pole collector intercepts and powdered electrode material is only allowed to pass through, separation net is taken out from container can directly obtain by
The electrode current collecting body separated, to improve working efficiency.
2, the high-temp liquid is fuse salt；It is at low cost because fuse salt at high temperature stablize by performance, it is highly-safe.
3, the salt-mixture of the fuse salt selective chlorination salt or chlorate；Because chlorate is cheap, as sodium chloride,
Calcium chloride etc., raw material sources are extensive.
4, the high-temp liquid and positive electrode and plus plate current-collecting body or do not occur with negative electrode material and negative current collector
Chemical reaction, to guarantee recycled product purity and recycle value.
5, when obtained electrode material is positive electrode, remove wherein remaining bonding agent decomposition by heated oxide
It goes；Because separating obtained positive electrode can remain the decomposition residue such as carbon etc. of some bonding agents or bonding agent, pass through high temperature
Oxidation processes can make it become carbon dioxide to vapor away, to improve the purity of gained positive electrode such as lithium salts；Certainly, in high temperature
Oxygen can be added when oxidation processes to improve the effect of oxidation processes.
6, when the electrode current collecting body is aluminium foil, the temperature of the high-temp liquid is higher than the fusing point of aluminium；Due to aluminium foil
Thickness it is very thin, recycled in air using conventional method, if heating recovery is easy to oxidize, the rate of recovery is low, causes resource unrestrained
Take；Aluminium foil will be fused into alumina particles after the temperature of the high-temp liquid is higher than the fusing point of aluminium, when alumina particles fusing is recycled, tool
The advantages that lossy small, high yield rate, so that its recovery value can be improved.
7, concentration is evaporated to the filtrate containing high-temp liquid, to recycle high-temp liquid.
Compared with prior art, the invention has the following beneficial effects:
1, environmentally friendly: in removal process, to be generated without waste water, exhaust gas and waste residue.
2, recycling: electrode current collecting body therein and electrode material are all recycled.
3, at low cost: due to not being added and consuming any chemicals in entire removal process, cost recovery is low.
Detailed description of the invention
Fig. 1 is the method for the anode in a kind of positive and negative anodes mixture for recycling waste and old lithium ion battery that embodiment 1 provides
Flow chart.
Fig. 2 is the method for the cathode in a kind of positive and negative anodes mixture for recycling waste and old lithium ion battery that embodiment 2 provides
Flow chart.
Fig. 3 is the side of the anode in the positive and negative anodes mixture for another recycling waste and old lithium ion battery that embodiment 3 provides
Method flow chart.
Fig. 4 is the side of the cathode in the positive and negative anodes mixture for another recycling waste and old lithium ion battery that embodiment 4 provides
Method flow chart.
Specific embodiment
Technical solution of the present invention is further elaborated below with reference to embodiment and attached drawing:
Embodiment 1
Referring to Fig.1 shown in, it is provided in this embodiment it is a kind of recycle waste and old lithium ion battery positive and negative anodes mixture in just
The method of pole is as follows: lithium ion battery being carried out broken apart rear obtained positive and negative anodes mixture and passes through jigging or magnetic
Fluid sorting method separates anode and cathode.Isolated anode is put into high-temp liquid, the temperature of high-temp liquid
General control can be such that the bonding agent for being bonded positive electrode decomposes at these temperatures, make to be adhered between 450 DEG C~700 DEG C
Positive electrode on anode is separated from plus plate current-collecting body to be entered in high-temp liquid；Water is added in high-temp liquid, leads to
The dissolution of water is crossed, aqueous solution is formed, filtering obtains the mixture filter cake containing positive electrode and plus plate current-collecting body and contains
The filtrate of high-temp liquid；Screening process is carried out again after carrying out cleaning, drying to obtained mixture filter cake；Due to positive electrode
Be it is powdered, be different from the size and specific gravity of plus plate current-collecting body aluminum shot, thus by screening the two can be separated, divided
From aluminum shot and positive electrode fine powder；Carrying out heated oxide processing to positive electrode fine powder can be improved its content, obtain anode
Material such as cobalt acid lithium powder.Concentration is evaporated to the filtrate containing high-temp liquid, it is recyclable to obtain high-temp liquid, made with circulation
With.
Embodiment 2
It is negative in a kind of positive and negative anodes mixture recycling waste and old lithium ion battery provided in this embodiment referring to shown in Fig. 2
The method of pole is as follows: lithium ion battery being carried out broken apart rear obtained positive and negative anodes mixture and passes through jigging or magnetic
Fluid sorting method separates anode and cathode.Isolated cathode is put into high-temp liquid, the high-temp liquid
Temperature is greater than the decomposition or separation temperature of bonding agent；By the heat effect of high-temp liquid, it is adhered to above negative current collector
Negative electrode material such as graphite powder, which will separate, to be entered in high-temp liquid；Water is added in high-temp liquid, passes through the dissolution of water
Aqueous solution is formed, is filtered, obtains filter cake and filtrate.Cleaning, drying is carried out to filter cake, is then sieved to get cathode is arrived
Material such as graphite powder and negative collector electrode material such as copper foil.Concentration is evaporated to the filtrate containing high-temp liquid, can be recycled
High-temp liquid is obtained, to be recycled.
Embodiment 3
Referring to shown in Fig. 3: in a kind of positive and negative anodes mixture recycling waste and old lithium ion battery provided in this embodiment just
The method of pole is as follows: lithium ion battery being carried out broken apart rear obtained positive and negative anodes mixture and passes through jigging or magnetic
Fluid sorting method separates anode and cathode.Isolated anode is put into high-temp liquid, the temperature of high-temp liquid
General control can be such that the bonding agent for being bonded positive electrode decomposes at these temperatures, cause to adhere between 450 DEG C~700 DEG C
Positive electrode on plus plate current-collecting body, which separates, to be entered in high-temp liquid；Water is added in high-temp liquid, passes through water
Dissolution forms aqueous solution, is once filtered, and can obtain the filter cake containing plus plate current-collecting body and contain positive electrode and high-temperature liquid
The mixed filtrate of body, so-called primary filtering are exactly to allow positive electrode to filter plus plate current-collecting body by controlling the size of filter mesh
It cannot filter；By containing plus plate current-collecting body filter cake carry out cleaning, drying after to get arrive plus plate current-collecting body, such as: aluminium block；Mixing is filtered
Liquid carries out secondary filter to get to the filter cake containing positive electrode and containing the filtrate of high-temp liquid；Cleaning, drying is carried out to filter cake, i.e.,
Positive electrode is obtained, carrying out heated oxide processing to the filter cake after cleaning, drying can be improved its content, obtain positive electrode such as
Cobalt acid lithium powder；Concentration is evaporated to the filtrate containing high-temp liquid, it is recyclable to obtain high-temp liquid, to be recycled.
Embodiment 4
Referring to shown in Fig. 4: in the positive and negative anodes mixture of another recycling waste and old lithium ion battery provided in this embodiment
The method of cathode is as follows: by lithium ion battery carry out it is broken apart after obtained positive and negative anodes mixture by jigging or
Magnetic fluid separating method separates anode and cathode.Isolated cathode is put into high-temp liquid, high-temp liquid is passed through
Heat effect, cause the negative electrode material being adhered to above negative current collector such as graphite powder to separate and enter high-temp liquid
In；Water is added in high-temp liquid, aqueous solution is formed by the dissolution of water, is once filtered, can obtain containing negative current collector
Filter cake and mixed filtrate containing negative electrode material and high-temp liquid, so-called primary filtering be exactly the size by controlling filter mesh
Allow negative electrode material filter and negative current collector cannot filter；Filter cake containing negative current collector is carried out after cleaning, drying to get arriving
Negative current collector, such as: copper foil；Mixed filtrate is subjected to secondary filter to get to the filter cake containing negative electrode material and containing high-temp liquid
Filtrate；Concentration is evaporated to the filtrate containing high-temp liquid, it is recyclable to obtain high-temp liquid, to be recycled.
Be it is necessary to described herein finally: above embodiments are served only for making technical solution of the present invention further detailed
Ground explanation, should not be understood as limiting the scope of the invention, those skilled in the art's above content according to the present invention
The some nonessential modifications and adaptations made all belong to the scope of protection of the present invention.
Claims (7)
1. a kind of method for the positive and negative anodes mixture for recycling waste and old lithium ion battery, includes anode in the positive and negative anodes mixture
And cathode, the anode include positive electrode and plus plate current-collecting body, the cathode includes negative electrode material and negative current collector；
It is characterized in that described method includes following steps:
11) anode and cathode are separated by jigging or magnetic fluid separating method；
12) isolated anode is put into high-temp liquid, makes positive electrode from anode by the heat effect of high-temp liquid
It is separated on collector, water is then added into high-temp liquid, carried out dissolution filter, obtain the filter cake containing only plus plate current-collecting body
With the mixed filtrate containing high-temp liquid and positive electrode；Cleaning, drying is carried out to obtained filter cake to get plus plate current-collecting body is arrived；
Secondary filter is carried out to the mixed filtrate containing high-temp liquid and positive electrode to get to the filter cake containing positive electrode and containing
The filtrate of high-temp liquid；
13) isolated cathode is put into high-temp liquid, makes negative electrode material from cathode by the heat effect of high-temp liquid
It is separated on collector, water is then added into high-temp liquid, carried out dissolution filter, obtain the filter cake containing only negative current collector
With the mixed filtrate containing high-temp liquid and negative electrode material；Cleaning, drying is carried out to obtained filter cake to get negative current collector is arrived；
Secondary filter is carried out to the mixed filtrate containing high-temp liquid and negative electrode material to get to the filter cake containing negative electrode material and containing
The filtrate of high-temp liquid；The temperature of the high-temp liquid is not less than the bonding for be adhesively fixed positive electrode or negative electrode material
The decomposition or separation temperature of agent, and chemistry does not occur with positive electrode and plus plate current-collecting body or with negative electrode material and negative current collector
Reaction；
The high-temp liquid is fuse salt.
2. a kind of method for the positive and negative anodes mixture for recycling waste and old lithium ion battery, includes anode in the positive and negative anodes mixture
And cathode, the anode include positive electrode and plus plate current-collecting body, the cathode includes negative electrode material and negative current collector；
It is characterized in that described method includes following steps:
21) anode and cathode are separated by jigging or magnetic fluid separating method；
22) isolated anode is put into high-temp liquid, makes positive electrode from anode by the heat effect of high-temp liquid
It is separated on collector, water is then added into high-temp liquid, carry out dissolution filter, obtained containing positive electrode and anode collection
The mixture filter cake of fluid and filtrate containing high-temp liquid；Divide again after carrying out cleaning, drying to obtained mixture filter cake
From processing to get arrive isolated positive electrode and plus plate current-collecting body；
23) isolated cathode is put into high-temp liquid, makes negative electrode material from cathode by the heat effect of high-temp liquid
It is separated on collector, water is then added into high-temp liquid, carried out dissolution filter, obtain containing negative electrode material and cathode collection
The mixture filter cake of fluid and filtrate containing high-temp liquid；Divide again after carrying out cleaning, drying to obtained mixture filter cake
From processing to get arrive isolated negative electrode material and negative current collector；The temperature of the high-temp liquid is not less than solid for being bonded
Determine the decomposition or separation temperature of the bonding agent of positive electrode or negative electrode material, and with positive electrode and plus plate current-collecting body or and cathode
Material and negative current collector do not chemically react；
The high-temp liquid is fuse salt.
3. it is method according to claim 1 or 2, it is characterized in that: being provided with separation net in the container for holding high-temp liquid.
4. it is method according to claim 1 or 2, it is characterized in that: the fuse salt is the salt-mixture of chlorate or chlorate.
5. method according to claim 1 or 2, it is characterized in that: being made to obtained positive electrode by heated oxide wherein residual
The bonding agent stayed, which decomposes, to be removed.
6. it is method according to claim 1 or 2, it is characterized in that: when obtained plus plate current-collecting body is aluminium foil, the high temperature
The temperature of liquid is higher than the fusing point of aluminium.
7. it is method according to claim 1 or 2, it is characterized in that: concentration is evaporated to the filtrate containing high-temp liquid, to return
It receives and utilizes high-temp liquid.
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| CN201410522975.0A CN105576312B (en) | 2014-10-06 | 2014-10-06 | The method for recycling the positive and negative anodes mixture of waste and old lithium ion battery |
| PCT/CN2015/081421 WO2015192743A1 (en) | 2014-06-16 | 2015-06-15 | Resource reclamation and environmental protection method for recycling lithium ion battery wastes |
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| CN110233305A (en) * | 2019-06-28 | 2019-09-13 | 武汉大学 | A kind of fused salt regeneration activating method of waste and old lithium ion battery tertiary cathode material |
| CN111430831B (en) * | 2020-03-11 | 2022-02-15 | 中南大学 | Method for recovering waste lithium ion battery negative electrode material |
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| US4058396A (en) * | 1976-11-26 | 1977-11-15 | Electric Power Research Institute, Inc. | Recovery of lead from batteries |
| CN101205104A (en) * | 2006-12-22 | 2008-06-25 | 比亚迪股份有限公司 | Recycling method of lithium ion battery cathode material waste slurry |
| CN103311600A (en) * | 2013-05-16 | 2013-09-18 | 清华大学 | Method and device for recycling metal in waste lithium ion batteries by water-soluble ionic liquid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7608178B2 (en) * | 2003-11-10 | 2009-10-27 | Polyplus Battery Company | Active metal electrolyzer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4058396A (en) * | 1976-11-26 | 1977-11-15 | Electric Power Research Institute, Inc. | Recovery of lead from batteries |
| CN101205104A (en) * | 2006-12-22 | 2008-06-25 | 比亚迪股份有限公司 | Recycling method of lithium ion battery cathode material waste slurry |
| CN103311600A (en) * | 2013-05-16 | 2013-09-18 | 清华大学 | Method and device for recycling metal in waste lithium ion batteries by water-soluble ionic liquid |
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