CN107069134A - A kind of method that waste lithium cell positive electrode is separated with collector - Google Patents
A kind of method that waste lithium cell positive electrode is separated with collector Download PDFInfo
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- CN107069134A CN107069134A CN201710182368.8A CN201710182368A CN107069134A CN 107069134 A CN107069134 A CN 107069134A CN 201710182368 A CN201710182368 A CN 201710182368A CN 107069134 A CN107069134 A CN 107069134A
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- positive electrode
- waste
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- defluorinating agent
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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
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
Abstract
The invention discloses a kind of method that waste lithium cell positive electrode is separated with collector, it is characterised in that comprises the following steps：（1）Waste positive is put into pulverizer and is crushed to 200 300 mesh, in input roll extrusion vibration mill roller, keeps positive electrode powder to be axially uniformly distributed along roller, is passed through after vacuumizing and is filled with inert gas, recovers normal pressure, rolling is ground to micron order；（2）Toward step（1）Middle addition defluorinating agent, which is put into high temperature furnace, carries out burning 35 hours in 200 300 DEG C, and screening removes defluorinating agent and obtains mixed powder；（3）By step（2）Mixed powder, which is put into gas seperator, reclaims positive electrode, and compared to the prior art, sintering temperature of the present invention is low, and energy consumption is low, and equipment investment is small, and technique is simple, and separative efficiency is high, and production and application can be direct plungeed into without subsequent operation, cost-effective to improve production efficiency.
Description
Technical field
The present invention relates to the recovery technology field of anode material of lithium battery, and in particular to a kind of waste lithium cell positive electrode
The method separated with collector.
Background technology
Since lithium ion battery realizes commercialization from nineteen ninety, video camera, mobile phone, notebook electricity have been widely used in it
Brain and Portable Measurement Instrument etc..Battery is general (to be used after 2-3a) after hundreds of discharge and recharges, and electrode expansion, capacity is big
It is big to decline so that scrapping.In addition, the general about 1%-3% of the percent defective of Chinese large-sized battery enterprise, the waste product of middle-size and small-size battery enterprise
Rate is higher.When producing positive plate, it can produce leftover pieces after roll-in, cutting, film-making, winding and pole piece is scrapped, battery enterprise
Industry is often directly when waste product is sold.Lithium ion battery contains multiple material, and wherein iron, copper, aluminium, cobalt, lithium is to compare to have recovery
The material of value, especially cobalt element, are the more rare metals of resource in the world.Meanwhile, consider from environmental angle, lithium ion
If battery is arbitrarily abandoned, Co therein3+(Co2+), fluoride can cause certain harm to environment, strengthen useless to such solid
The resource technology exploitation of gurry, not only with larger economic benefit, is also beneficial to environmental protection.
The general recovery method of existing various lithium ion batteries is：With strong acid dissolution aluminium cobalt film so that collector and work
Property material cobalt acid lithium all dissolving enters solution, then separate and recover various metallic elements.The processing mode technique is simple, but leaching
Go out the complicated composition of liquid and higher requirement undoubtedly is proposed to follow-up purification and process of producing product.Therefore, it is pre-separated afflux
Body and recovery of the active material to various valuable metals are highly beneficial.
Document《Progress in recovery technology of waste lithium ion battery》In by heating positive electrode, decompose binding agent and wave
Hair, then positive active material is isolated using floatation or gravity separation method.But high-temperature roasting high energy consumption, equipment investment is big, and
Poisonous fluoro-gas can be produced, it is necessary to be modified to existing process.
The content of the invention
It is existing to overcome it is an object of the invention to provide a kind of method that waste lithium cell positive electrode is separated with collector
There is the deficiency of technology.
The object of the present invention is achieved like this：
A kind of method that waste lithium cell positive electrode is separated with collector, it is characterised in that comprise the following steps：（1）Will be useless
Old positive plate, which is put into pulverizer, is crushed to 200-300 mesh, in input roll extrusion vibration mill roller, keeps positive electrode powder along rolling
Cylinder is axially uniformly distributed, and is passed through after vacuumizing and is filled with inert gas, recovers normal pressure, and rolling is ground to micron order；（2）Toward step
（1）Middle addition defluorinating agent, which is put into high temperature furnace, carries out burning 3-5 hours in 200-300 DEG C, and screening removes defluorinating agent and obtains mixed powder；
（3）By step（2）Mixed powder is put into gas seperator reclaims positive electrode by the different method of proportion.
Step（1）Described waste positive refers to that lithium battery factory produces the leftover pieces produced during positive plate or scrapped just
Pole piece.
Step（1）Described inert gas is argon gas or nitrogen gas.
Step（1）The material rolling is ground to 50-100 μm.
Step（2）Described defluorinating agent be aluminum oxide and carbide slag with the mixing granulation of mass ratio 1: 9, particle diameter is 3-5mm.
Step（2）Middle screening is the screen cloth of 400-500 mesh.
The present invention has following beneficial effect：Compared to the prior art, sintering temperature of the present invention is low, and energy consumption is low, equipment investment
Small, the present invention is ground to micron order by roll extrusion vibration mill again after positive pole leftover pieces are crushed first, and particle size is small to be added
In the contact area of oxygen, the rapid combustion heat release of organic binder bond energy is so as to accelerate positive pole material of lithium cobalt acid etc. and current collector aluminum foil
Disengaging, finally both are separated so as to reaching recovery positive pole through gas seperator using positive electrode is different with the proportion of aluminium foil
The purpose of material, present invention process is simple, and separative efficiency is high, and production and application can be direct plungeed into without subsequent operation, cost-effective
Improve production efficiency.
Embodiment
The method that a kind of described waste lithium cell positive electrode is separated with collector, it is characterised in that including following step
Suddenly：（1）Waste positive is put into pulverizer and is crushed to 200-300 mesh, in input roll extrusion vibration mill roller, positive pole material is kept
Feed powder end is axially uniformly distributed along roller, is passed through after vacuumizing and is filled with inert gas, recovers normal pressure, and rolling is ground to micron order；
（2）Toward step（1）Middle addition defluorinating agent, which is put into high temperature furnace, carries out burning 3-5 hours in 280 DEG C, and screening removes defluorinating agent and must mixed
Close powder；（3）By step（2）Mixed powder is put into gas seperator reclaims positive electrode by the different method of proportion.
Step（1）Described waste positive refers to that lithium battery factory produces the leftover pieces produced during positive plate or scrapped just
Pole piece.
Step（1）Described inert gas is argon gas or nitrogen gas.
Step（1）The material rolling is ground to 50-100 μm.
Step（2）Described defluorinating agent be aluminum oxide and carbide slag with the mixing granulation of mass ratio 1: 9, particle diameter is 3-5mm.
Step（2）Middle screening is the screen cloth of 400-500 mesh.
Claims (6)
1. a kind of method that waste lithium cell positive electrode is separated with collector, it is characterised in that comprise the following steps：（1）Will
Waste positive, which is put into pulverizer, is crushed to 200-300 mesh, in input roll extrusion vibration mill roller, keeps positive electrode powder edge
Roller is axially uniformly distributed, and is passed through after vacuumizing and is filled with inert gas, recovers normal pressure, and rolling is ground to micron order；（2）Toward step
（1）Middle addition defluorinating agent, which is put into high temperature furnace, carries out burning 3-5 hours in 200-300 DEG C, and screening removes defluorinating agent and obtains mixed powder；
（3）By step（2）Mixed powder is put into gas seperator reclaims positive electrode by the different method of proportion.
2. according to the method described in claim 1, it is characterised in that step（1）Described waste positive refers to lithium battery factory
The leftover pieces produced or the positive plate scrapped when producing positive plate.
3. according to the method described in claim 1, it is characterised in that step（1）Described inert gas is argon gas or nitrogen gas
Body.
4. according to the method described in claim 1, it is characterised in that step（1）The material rolling is ground to 50-100 μm.
5. according to the method described in claim 1, it is characterised in that step（2）Described defluorinating agent is aluminum oxide and carbide slag
With the mixing granulation of mass ratio 1: 9, particle diameter is 3-5mm.
6. according to the method described in claim 1, it is characterised in that step（2）Middle screening is the screen cloth of 400-500 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710182368.8A CN107069134A (en) | 2017-03-24 | 2017-03-24 | A kind of method that waste lithium cell positive electrode is separated with collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710182368.8A CN107069134A (en) | 2017-03-24 | 2017-03-24 | A kind of method that waste lithium cell positive electrode is separated with collector |
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| CN107069134A true CN107069134A (en) | 2017-08-18 |
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| CN201710182368.8A Pending CN107069134A (en) | 2017-03-24 | 2017-03-24 | A kind of method that waste lithium cell positive electrode is separated with collector |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321454A (en) * | 2018-04-04 | 2018-07-24 | 中国科学院过程工程研究所 | A kind of lithium battery collector retracting device and method |
| CN108336440A (en) * | 2018-01-05 | 2018-07-27 | 深圳市比克电池有限公司 | A kind of waste and old lithium ion battery collector recovery method |
| CN108736091A (en) * | 2018-07-27 | 2018-11-02 | 清华四川能源互联网研究院 | A kind of dismantling recovery process of lithium battery |
| CN110148802A (en) * | 2019-05-17 | 2019-08-20 | 清华大学 | A method of anode material of lithium battery and aluminium foil are discarded using red-mud separation |
| CN110492194A (en) * | 2019-08-16 | 2019-11-22 | 朱涵睿 | A kind of anode material of lithium battery and collector stripping off device |
| CN111961839A (en) * | 2020-08-11 | 2020-11-20 | 长沙矿冶研究院有限责任公司 | Method for synchronously leaching valuable metals from positive and negative electrode active materials of waste lithium ion batteries and removing impurities |
| CN111961857A (en) * | 2020-08-11 | 2020-11-20 | 长沙矿冶研究院有限责任公司 | Method for synchronously defluorinating valuable metals leached from waste lithium ion batteries |
| CN111987381A (en) * | 2020-08-25 | 2020-11-24 | 长沙矿冶研究院有限责任公司 | Method for synchronously defluorinating valuable metals leached from waste lithium ion batteries |
| CN112234272A (en) * | 2020-09-22 | 2021-01-15 | 华中科技大学 | Low-energy-consumption and low-Al-content recovery method for lithium iron phosphate positive plate |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108336440A (en) * | 2018-01-05 | 2018-07-27 | 深圳市比克电池有限公司 | A kind of waste and old lithium ion battery collector recovery method |
| CN108336440B (en) * | 2018-01-05 | 2020-04-07 | 深圳市比克电池有限公司 | Method for recovering waste lithium ion battery current collector |
| CN108321454A (en) * | 2018-04-04 | 2018-07-24 | 中国科学院过程工程研究所 | A kind of lithium battery collector retracting device and method |
| CN108321454B (en) * | 2018-04-04 | 2023-08-11 | 中国科学院过程工程研究所 | Lithium battery current collector recovery device and method |
| CN108736091A (en) * | 2018-07-27 | 2018-11-02 | 清华四川能源互联网研究院 | A kind of dismantling recovery process of lithium battery |
| CN110148802A (en) * | 2019-05-17 | 2019-08-20 | 清华大学 | A method of anode material of lithium battery and aluminium foil are discarded using red-mud separation |
| CN110492194B (en) * | 2019-08-16 | 2020-08-14 | 朱涵睿 | Lithium battery anode material and current collector stripping device |
| CN110492194A (en) * | 2019-08-16 | 2019-11-22 | 朱涵睿 | A kind of anode material of lithium battery and collector stripping off device |
| CN111961839A (en) * | 2020-08-11 | 2020-11-20 | 长沙矿冶研究院有限责任公司 | Method for synchronously leaching valuable metals from positive and negative electrode active materials of waste lithium ion batteries and removing impurities |
| CN111961857A (en) * | 2020-08-11 | 2020-11-20 | 长沙矿冶研究院有限责任公司 | Method for synchronously defluorinating valuable metals leached from waste lithium ion batteries |
| CN111987381A (en) * | 2020-08-25 | 2020-11-24 | 长沙矿冶研究院有限责任公司 | Method for synchronously defluorinating valuable metals leached from waste lithium ion batteries |
| CN112234272A (en) * | 2020-09-22 | 2021-01-15 | 华中科技大学 | Low-energy-consumption and low-Al-content recovery method for lithium iron phosphate positive plate |
| CN112234272B (en) * | 2020-09-22 | 2022-02-18 | 华中科技大学 | Low-energy-consumption and low-Al-content recovery method for lithium iron phosphate positive plate |
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Application publication date: 20170818 |