CN106450545A - Recycle method of lithium battery negative electrode material - Google Patents
Recycle method of lithium battery negative electrode material Download PDFInfo
- Publication number
- CN106450545A CN106450545A CN201610879320.8A CN201610879320A CN106450545A CN 106450545 A CN106450545 A CN 106450545A CN 201610879320 A CN201610879320 A CN 201610879320A CN 106450545 A CN106450545 A CN 106450545A
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- China
- Prior art keywords
- sieve
- graphite
- screen
- copper foil
- lithium cell
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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
-
- 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
Abstract
The invention provides a recycle method of a lithium battery negative electrode material. The recycle method comprises the following steps of smashing a waste lithium battery negative plate into slices with 1-2 centimeters; placing the slices in a high-temperature furnace having a vibration screening function, heating the debris for 1-2 hours under a certain temperature, starting a vibration screen and continuing to heat for 0.5-1 hour to obtain graphite powder on the screen and debris under the screen; placing the debris in an agitator loaded with deionized water, performing mechanical stirring for 0.5-1 hour, and then passing through the screen to obtain a copper foil piece with a small amount of graphite resided on the surface on the screen and wet graphite under the screen; placing the copper foil piece on the screen in the deionized water for ultrasound for 0.5-1 hour, and passing through the screen to obtain a copper foil with relatively high purity on the screen and a small amount of graphite under the screen; and heating and drying the wet graphite. The copper foil and graphite powder are separated and recycled by a simple and effective physical method, no chemical reagent is used, and the recycle method is environmental-friendly and efficient.
Description
Technical field
The present invention relates to technical field of lithium batteries, reclaimed in cathode of lithium battery waste paper using physical method particularly to a kind of
Copper Foil and the method for graphite.
Background technology
It is high that lithium ion battery has an energy density, has extended cycle life, the characteristic such as memory-less effect, in 3C consumer goodss, electronic
The fields such as automobile are widely used.The developing rapidly of popularization with smart machine and electric automobile, creates and scraps in a large number
Lithium ion battery.Waste lithium cell contains substantial amounts of non-renewable metal, it is scientificlly and effectively recycled, to promotion
The sustainable development of socio-economy is significant.
At present, the recovery of lithium ion battery is concentrated mainly on the recovery of collector and lithium resource, and returning in negative material
Need during receipts, using acid, easily to bring environmental problem.
Content of the invention
For the environmental problem come using acid band during solving existing recovery negative material, present invention offer cathode of lithium battery
Material recovery method, using physical method for separation Copper Foil and graphite, does not use soda acid, environment-friendly high-efficiency, separate the Copper Foil obtaining and
Graphite can be sold to metallurgical and graphite producer purification, thus being circulated utilization.
The present invention is achieved through the following technical solutions：
A kind of lithium cell cathode material recovery method, comprises the following steps：
（1）Waste lithium cell negative plate is pulverized the fragment for 1-2 cm；
（2）By step（1）Middle fragment is put in the high temperature furnace with vibrosieve function, first heats 1-2 h at a certain temperature, so
Open vibrosieve afterwards and continue heating 0.5-1 h, obtain powdered graphite under sieve, sieve obtains in small, broken bits；
（3）By step（2）In the in small, broken bits agitator putting into added with deionized water on middle sieve, mistake after mechanical agitation 0.5-1 h
Sieve, sieve obtains obtain under the copper foil of a small amount of graphite of surface residual, sieve wet graphite；
（4）By step（3）Copper foil on middle sieve is put in deionized water and is sieved after ultrasonic 0.5-1 h, sieve obtains purity relatively
High Copper Foil, obtains wet graphite on a small quantity under sieve；
（5）By step（3）With（4）In wet graphite heating be dried.
Further, step（2）In high temperature furnace operating temperature be 300-400 DEG C.
Further, step（3）In in small, broken bits mass ratio with deionized water be 1:3-5.
Further, described step（4）Middle copper foil is 1 with the mass ratio of deionized water:2-4.
Further, step（2）The sieve number of middle vibrosieve is 20-50 mesh.
Further, step（3）In sieve use sieve number be 30-60 mesh.
Further, step（4）In sieve use sieve number be 50-80 mesh.
The present invention has following technique effect：
The present invention adopts physical method to reclaim Copper Foil and graphite in cathode of lithium battery waste paper, does not use the chemical reagent such as soda acid, high
Effect environmental protection.Meanwhile, the present invention carries out salvage material by steps such as pulverizing, high-temperature vibrating screening, mechanical agitation, ultrasonic Separation,
Process is simple and cost is relatively low.Sieve number is relevant with vibrosieve, mechanical agitation, sonication treatment time, and process time is longer,
Graphite composite powder particle diameter is less, and sieve number can increase.Meanwhile, high temperature furnace temperature improves, and vibration screening mesh number can also increase
Plus, with the propulsion of screening process in the present invention, graphite particle diameter is gradually reduced, and corresponding screen cloth number increases, and obtains purity high
Graphite, and the separation and recovery effect of graphite and Copper Foil is good.
Figure of description
Fig. 1 is the process chart of the present invention.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail, but the present invention is not limited to following examples.
Embodiment 1
A kind of lithium cell cathode material recovery method, comprises the following steps：
（1）Waste lithium cell negative plate is pulverized the fragment for 1-2 cm；
（2）Weigh step（1）In 10 kg fragments put in the high temperature furnace with vibrosieve function, first at a temperature of 300 DEG C plus
Hot 1 h, is then turned on vibrosieve（20 mesh）Continue heating 0.5 h, obtain powdered graphite under sieve, sieve obtains in small, broken bits；
（3）By step（2）In small, broken bits on middle sieve weighs in the agitator that 2 kg put into added with 6 kg deionized waters, mechanical agitation
Sieved using the screen cloth of 30 mesh after 1 h, sieve obtains obtain under the copper foil of a small amount of graphite of surface residual, sieve wet graphite；
（4）By step（3）Copper foil on middle sieve is put in 6 kg deionized waters and is sieved using the screen cloth of 50 mesh after ultrasonic 1 h,
The higher Copper Foil of purity is obtained on sieve, under sieve, obtains wet graphite on a small quantity；
（5）By step（3）With（4）In wet graphite remove moisture in 120 DEG C of heat dryings.
Embodiment 2
A kind of lithium cell cathode material recovery method, comprises the following steps：
（1）Waste lithium cell negative plate is pulverized the fragment for 1-2 cm；
（2）Weigh step（1）In 10 kg fragments put in the high temperature furnace with vibrosieve function, first at a temperature of 350 DEG C plus
Hot 1 h, is then turned on vibrosieve（30 mesh）Continue heating 0.5 h, obtain powdered graphite under sieve, sieve obtains in small, broken bits；
（3）By step（2）In small, broken bits on middle sieve weighs in the agitator that 2 kg put into added with 6 kg deionized waters, mechanical agitation
Sieved using the screen cloth of 50 mesh after 1h, sieve obtains obtain under the copper foil of a small amount of graphite of surface residual, sieve wet graphite；
（4）By step（3）Copper foil on middle sieve is put in 6 kg deionized waters and is sieved using the screen cloth of 70 mesh after ultrasonic 1 h,
The higher Copper Foil of purity is obtained on sieve, under sieve, obtains wet graphite on a small quantity；
（5）By step（3）With（4）In wet graphite remove moisture in 120 DEG C of heat dryings.
Embodiment 3
A kind of lithium cell cathode material recovery method, comprises the following steps：
（1）Waste lithium cell negative plate is pulverized the fragment for 1-2 cm；
（2）Weigh step（1）In 10 kg fragments put in the high temperature furnace with vibrosieve function, first at a temperature of 300 DEG C plus
Hot 2 h, are then turned on vibrosieve（30 mesh）Continue heating 0.5 h, obtain powdered graphite under sieve, sieve obtains in small, broken bits；
（3）By step（2）In small, broken bits on middle sieve weighs in the agitator that 2 kg put into added with 8 kg deionized waters, mechanical agitation
Sieved using the screen cloth of 60 mesh after 1 h, sieve obtains obtain under the copper foil of a small amount of graphite of surface residual, sieve wet graphite；
（4）By step（3）Copper foil on middle sieve is put in 6 kg deionized waters and is sieved using the screen cloth of 80 mesh after ultrasonic 1 h,
The higher Copper Foil of purity is obtained on sieve, under sieve, obtains wet graphite on a small quantity；
（5）By step（3）With（4）In wet graphite remove moisture in 120 DEG C of heat dryings.
Claims (7)
1. a kind of lithium cell cathode material recovery method is it is characterised in that comprise the following steps：
（1）Waste lithium cell negative plate is pulverized the fragment for 1-2 cm；
（2）By step（1）Middle fragment is put in the high temperature furnace with vibrosieve function, first heats 1-2 h at a certain temperature, so
Open vibrosieve afterwards and continue heating 0.5-1 h, obtain powdered graphite under sieve, sieve obtains in small, broken bits；
（3）By step（2）In the in small, broken bits agitator putting into added with deionized water on middle sieve, mistake after mechanical agitation 0.5-1 h
Sieve, sieve obtains obtain under the copper foil of a small amount of graphite of surface residual, sieve wet graphite；
（4）By step（3）Copper foil on middle sieve is put in deionized water and is sieved after ultrasonic 0.5-1 h, sieve obtains purity relatively
High Copper Foil, obtains wet graphite on a small quantity under sieve；
（5）By step（3）With（4）In wet graphite heating be dried.
2. lithium cell cathode material recovery method according to claim 1 is it is characterised in that step（2）In high temperature furnace
Operating temperature is 300-400 DEG C.
3. lithium cell cathode material recovery method according to claim 1 is it is characterised in that described step（3）In in small, broken bits
Piece is 1 with the mass ratio of deionized water:3-5.
4. lithium cell cathode material recovery method according to claim 1 is it is characterised in that described step（4）Middle Copper Foil
Piece is 1 with the mass ratio of deionized water:2-4.
5. lithium cell cathode material recovery method according to claim 1 is it is characterised in that step（2）Middle vibrosieve
Sieve number is 20-50 mesh.
6. lithium cell cathode material recovery method according to claim 1 is it is characterised in that step（3）In sieve use
Sieve number be 30-60 mesh.
7. lithium cell cathode material recovery method according to claim 1 is it is characterised in that step（4）In sieve use
Sieve number be 50-80 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610879320.8A CN106450545A (en) | 2016-10-08 | 2016-10-08 | Recycle method of lithium battery negative electrode material |
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| CN201610879320.8A CN106450545A (en) | 2016-10-08 | 2016-10-08 | Recycle method of lithium battery negative electrode material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923095A (en) * | 2018-08-24 | 2018-11-30 | 广西师范大学 | A method of recycling negative electrode material of waste lithium ion battery |
| CN110303046A (en) * | 2019-07-12 | 2019-10-08 | 朱良彬 | A kind of method for manufacturing copper foil |
| WO2019205984A1 (en) * | 2018-04-27 | 2019-10-31 | Do Fluoride New Energy Tech Co Ltd | Method for recycling of positive electrode plates from lithium-ion battery |
| CN110690519A (en) * | 2019-09-30 | 2020-01-14 | 中南大学 | Method for recycling lithium ion battery negative electrode material |
| CN111285365A (en) * | 2019-01-02 | 2020-06-16 | 东莞鑫茂新能源技术有限公司 | Method for recycling waste negative electrode graphite material in lithium ion battery production process |
| CN114361637A (en) * | 2022-01-14 | 2022-04-15 | 中南大学 | Method for separating electrode material and foil of lithium battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988244A (en) * | 2005-12-22 | 2007-06-27 | 比亚迪股份有限公司 | Method for recovering battery negative material |
| CN101944644A (en) * | 2009-07-09 | 2011-01-12 | 东莞新能源科技有限公司 | Recovery method of anode materials for lithium-ion batteries |
| CN103346365A (en) * | 2013-07-22 | 2013-10-09 | 田东 | Method for recycling negative material from waste lithium ion battery |
-
2016
- 2016-10-08 CN CN201610879320.8A patent/CN106450545A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1988244A (en) * | 2005-12-22 | 2007-06-27 | 比亚迪股份有限公司 | Method for recovering battery negative material |
| CN101944644A (en) * | 2009-07-09 | 2011-01-12 | 东莞新能源科技有限公司 | Recovery method of anode materials for lithium-ion batteries |
| CN103346365A (en) * | 2013-07-22 | 2013-10-09 | 田东 | Method for recycling negative material from waste lithium ion battery |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019205984A1 (en) * | 2018-04-27 | 2019-10-31 | Do Fluoride New Energy Tech Co Ltd | Method for recycling of positive electrode plates from lithium-ion battery |
| CN108923095A (en) * | 2018-08-24 | 2018-11-30 | 广西师范大学 | A method of recycling negative electrode material of waste lithium ion battery |
| CN111285365A (en) * | 2019-01-02 | 2020-06-16 | 东莞鑫茂新能源技术有限公司 | Method for recycling waste negative electrode graphite material in lithium ion battery production process |
| CN111285365B (en) * | 2019-01-02 | 2023-03-10 | 深圳鑫茂新能源技术有限公司 | Method for recycling waste negative electrode graphite material in lithium ion battery production process |
| CN110303046A (en) * | 2019-07-12 | 2019-10-08 | 朱良彬 | A kind of method for manufacturing copper foil |
| CN110690519A (en) * | 2019-09-30 | 2020-01-14 | 中南大学 | Method for recycling lithium ion battery negative electrode material |
| CN110690519B (en) * | 2019-09-30 | 2023-03-14 | 中南大学 | Method for recycling lithium ion battery negative electrode material |
| CN114361637A (en) * | 2022-01-14 | 2022-04-15 | 中南大学 | Method for separating electrode material and foil of lithium battery |
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Application publication date: 20170222 |