CN112103588B - Lithium ion battery recovery processing method - Google Patents
Lithium ion battery recovery processing method Download PDFInfo
- Publication number
- CN112103588B CN112103588B CN202010915665.0A CN202010915665A CN112103588B CN 112103588 B CN112103588 B CN 112103588B CN 202010915665 A CN202010915665 A CN 202010915665A CN 112103588 B CN112103588 B CN 112103588B
- Authority
- CN
- China
- Prior art keywords
- battery
- waste
- solid particles
- slag
- waste battery
- 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.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- 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
- 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 relates to the technical field of waste battery recycling, and provides a lithium ion battery recycling method. The method comprises the following steps: cutting a drainage port: cutting one end of the waste battery into a drainage port; heating and stirring: fully mixing and rubbing the waste battery and the solid particles, and introducing heated nitrogen; sieving: filtering and separating the waste batteries and the solid particles by using a screen; crushing: crushing the waste battery into slag; stirring: fully mixing the waste battery slag and the sieved solid particles, and rubbing the waste battery slag and the sieved solid particles with each other; magnetic separation: separating magnetic substances and non-magnetic substances in the magnetic separator by the magnetic separator; chemical precipitation separation: dissolving the solid powder into alkali liquor, adding sulfuric acid to obtain metal sulfate, and adding sodium carbonate to obtain carbonate precipitate; washing and drying: the carbonate precipitate is washed and dried. The invention has the beneficial effects that: the discharge time of the battery is shortened, namely the battery has high efficiency of recovering waste batteries by a pyrogenic process, and the battery also has the recovery rate of recovering the waste batteries by a wet process.
Description
Technical Field
The invention relates to the technical field of waste battery recycling, in particular to a lithium ion battery recycling method.
Background
Lithium ion batteries are currently the most effective and promising energy storage technology due to their high specific energy and long cycle life. Meanwhile, the lithium ion battery is widely used in the field of new energy electric automobiles. China is one of the biggest lithium ion battery production and consumption countries in the world, the increase of the lithium ion battery output inevitably brings the increase of the lithium ion battery scrap quantity, and the full and reasonable resource utilization of the waste lithium ion battery has important economic value for reducing the cost of the lithium ion battery. Not only can reduce the preparation cost and the environmental pollution, but also can relieve the situation that the lithium resource is increasingly reduced, and has important social and economic values.
The waste lithium ion battery mainly comprises a battery shell, a positive electrode, a negative electrode, electrolyte, a diaphragm and the like, wherein the electrolyte of the lithium ion battery is a carrier for ion transmission in the battery. The electrolyte generally consists of a lithium salt, a solvent and an additive. The commercially used electrolyte lithium salt is mainly LiPF6. At present, most recycling enterprises use a pyrogenic process and a wet process to treat the waste lithium ion batteries. The organic solvent of the electrolyte is volatilized or burnt to decompose into water and carbon dioxide to be discharged during the pyrogenic process, and LiPF6When exposed to air and heated, the PF5 gas can be decomposed to form fluorine-containing smoke emission, and air pollution can be caused. Simultaneous LiPF6HF is generated in water and has strong corrosivity, and HF acid can react with a strong oxidant to produce toxic substances such as P2O5 and the like, so that environmental pollution is caused.
Disclosure of Invention
The invention aims to provide a lithium ion battery recovery processing method, which is mainly used for solving the problems that air pollution is generated in the process of processing waste lithium ion batteries by a pyrogenic process and toxic substances are generated in the process of processing the waste lithium ion batteries by a water method to pollute the environment.
The technical problem of the invention is mainly solved by the following technical scheme: the method comprises the following steps:
1) cutting a drainage port: leveling one end of a waste battery, cutting off the leveled end of the battery by 0.5-1 cm by using a cutting machine in a nitrogen environment to expose the waste battery out of an internal battery core, and cutting off a drainage port at one end of the waste battery;
2) heating and stirring: pouring the waste battery with the cut discharge opening into a turnover furnace, wherein solid particles are added into the turnover furnace in advance, the solid particles are a mixture of sand particles and iron particles, and the sand particles are: 2-5% of iron particles: starting a turnover furnace to fully mix and rub waste batteries and solid particles, introducing heated nitrogen into the turnover furnace, discharging tail gas discharged by the turnover furnace into the turnover furnace again, stirring for 1-1.5H, drying and solidifying electrolyte in a battery cell, and drying and solidifying the electrolyte on the surfaces of the solid particles and the batteries and in the battery cell;
3) sieving: pouring out the waste batteries and the solid particles in the overturning furnace in the step 2), and filtering by using a screen to separate the waste batteries and the solid particles;
4) crushing: crushing the waste batteries obtained by sieving in the step 3) into waste battery crushed slag by using a crusher;
5) stirring: putting the crushed waste battery slag and the solid particles separated by sieving in the step 3) into a turnover furnace at the same time for fully mixing, wherein the solid particles and the waste battery slag are rubbed with each other in the mixing process, and the electrode plate coating layer and the dried and solidified electrolyte in the waste battery slag are separated from the solid surface by friction in the mixing process to become powder;
6) magnetic separation: putting the waste battery slag and solid particles stirred in the step 5) into a magnetic separator together, and separating magnetic substances and non-magnetic substances in the waste battery slag and the solid particles, wherein the magnetic substances are iron, cobalt and nickel solids, and the non-magnetic substances are plastics, sand grains, electrode slice coating layer solid powder and electrolyte solid powder;
7) chemical precipitation separation: dissolving the solid powder obtained by separation in the step 6) into alkali liquor, filtering to obtain a solution, pouring the solution into a reaction kettle, adding sulfuric acid into the reaction kettle to obtain metal sulfate, and adding sodium carbonate into the reaction kettle to obtain carbonate precipitate;
8) washing and drying: washing the carbonate precipitate obtained in the step 7) by using pure water, drying, and separating out cobalt ions, lithium ions and nickel ions in the form of carbonate crystals, thereby completing the recovery of the cobalt ions, the lithium ions and the nickel ions in the electrolyte and the electrode coating layer.
The invention has the beneficial effects that: mixing waste batteries in solid particles for drying and stirring, assisting battery discharge by using iron particles in the solid particles, and simultaneously drying and solidifying electrolytes to shorten the battery discharge time; meanwhile, the friction between the solid particles and the waste batteries is utilized to scrape and separate the electrode coating layer and the solidified electrolyte of the waste batteries into powder for chemical extraction. Namely, the method has high efficiency of recovering the waste batteries by a pyrogenic process and also has the recovery rate of recovering the waste batteries by a wet process.
Drawings
FIG. 1 is a flow chart of the present invention;
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1
In the lithium ion battery recycling method of the embodiment,
the method comprises the following steps:
1) cutting a drainage port: leveling one end of a waste battery, cutting off the leveled end of the battery by 0.5cm by using a cutting machine under a nitrogen environment to expose the internal electric core of the waste battery, and cutting off a drainage port at one end of the waste battery;
2) heating and stirring: pouring the waste battery with the cut discharge opening into a turnover furnace, and adding solid particles into the turnover furnace in advance, wherein the solid particles are a mixture of sand grains and iron grains, and the sand grains are as follows: iron particles are 2: starting a turnover furnace to fully mix and rub waste batteries and solid particles, introducing heated nitrogen into the turnover furnace, discharging tail gas discharged by the turnover furnace into the turnover furnace again, stirring for 1H, drying and solidifying electrolyte in a battery cell, and drying and solidifying the electrolyte on the surfaces of the solid particles and the batteries and in the battery cell;
3) sieving: pouring out the waste batteries and the solid particles in the overturning furnace in the step 2), and filtering by using a screen to separate the waste batteries and the solid particles;
4) crushing: crushing the waste batteries obtained by sieving in the step 3) into waste battery crushed slag by using a crusher;
5) stirring: putting the crushed waste battery slag and the solid particles separated by sieving in the step 3) into a turnover furnace at the same time for fully mixing, wherein the solid particles and the waste battery slag are mutually rubbed in the mixing process, and the electrode plate coating layer in the waste battery slag and the dried and solidified electrolyte are separated from the solid surface by friction in the mixing process and become powder;
6) magnetic separation: putting the waste battery slag and solid particles stirred in the step 5) into a magnetic separator together, and separating magnetic substances and non-magnetic substances in the waste battery slag and the solid particles, wherein the magnetic substances are iron, cobalt and nickel solids, and the non-magnetic substances are plastics, sand grains, electrode slice coating layer solid powder and electrolyte solid powder;
7) chemical precipitation separation: dissolving the solid powder obtained by separation in the step 6) into alkali liquor, filtering to obtain a solution, pouring the solution into a reaction kettle, adding sulfuric acid into the reaction kettle to obtain metal sulfate, and adding sodium carbonate into the reaction kettle to obtain carbonate precipitate;
8) washing and drying: washing the carbonate precipitate obtained in the step 7) by using pure water, drying, and separating out cobalt ions, lithium ions and nickel ions in the form of carbonate crystals, thereby completing the recovery of the cobalt ions, the lithium ions and the nickel ions in the electrolyte and the electrode coating layer.
Example 2
In the lithium ion battery recycling method of the embodiment,
the method comprises the following steps:
1) cutting a drainage port: leveling one end of a waste battery, cutting off the leveled end of the battery by 1cm by using a cutting machine under a nitrogen environment to expose the internal electric core of the waste battery, and cutting off a drainage port at one end of the waste battery;
2) heating and stirring: pouring the waste battery with the cut discharge opening into a turnover furnace, and adding solid particles into the turnover furnace in advance, wherein the solid particles are a mixture of sand grains and iron grains, and the sand grains are as follows: iron particles are 5: starting a turnover furnace to fully mix and rub waste batteries and solid particles, introducing heated nitrogen into the turnover furnace, discharging tail gas discharged by the turnover furnace into the turnover furnace again, stirring for 1.5H, drying and solidifying electrolyte in a battery cell, and drying and solidifying the electrolyte on the surfaces of the solid particles and the batteries and in the battery cell;
3) sieving: pouring out the waste batteries and the solid particles in the overturning furnace in the step 2), and filtering by using a screen to separate the waste batteries and the solid particles;
4) crushing: crushing the waste batteries obtained by sieving in the step 3) into waste battery crushed slag by using a crusher;
5) stirring: putting the crushed waste battery slag and the solid particles separated by sieving in the step 3) into a turnover furnace at the same time for fully mixing, wherein the solid particles and the waste battery slag are mutually rubbed in the mixing process, and the electrode plate coating layer in the waste battery slag and the dried and solidified electrolyte are separated from the solid surface by friction in the mixing process and become powder;
6) magnetic separation: putting the waste battery slag and solid particles stirred in the step 5) into a magnetic separator together, and separating magnetic substances and non-magnetic substances in the waste battery slag and the solid particles, wherein the magnetic substances are iron, cobalt and nickel solids, and the non-magnetic substances are plastics, sand grains, electrode slice coating layer solid powder and electrolyte solid powder;
7) chemical precipitation separation: dissolving the solid powder obtained by separation in the step 6) into alkali liquor, filtering to obtain a solution, pouring the solution into a reaction kettle, adding sulfuric acid into the reaction kettle to obtain metal sulfate, and adding sodium carbonate into the reaction kettle to obtain carbonate precipitate;
8) washing and drying: washing the carbonate precipitate obtained in the step 7) by using pure water, drying, and separating out cobalt ions, lithium ions and nickel ions in the form of carbonate crystals, thereby completing the recovery of the cobalt ions, the lithium ions and the nickel ions in the electrolyte and the electrode coating layer.
While the foregoing embodiments are illustrative of the present invention, various modifications and changes may be readily made by those skilled in the art based upon the teachings and principles of this invention, which are intended to be limited not to the details of construction and methods herein shown, but rather to the preferred embodiments described, and therefore all equivalent modifications and changes in light of the above teachings are intended to be included within the scope of the present invention as defined in the appended claims.
Claims (1)
1. A lithium ion battery recycling method is characterized by comprising the following steps:
1) cutting a drainage port: leveling one end of a waste battery, cutting off the leveled end of the battery by 0.5-1 cm by using a cutting machine in a nitrogen environment to expose the waste battery out of an internal battery core, and cutting off a drainage port at one end of the waste battery;
2) heating and stirring: pouring the waste battery with the cut discharge opening into a turnover furnace, wherein solid particles are added into the turnover furnace in advance, the solid particles are a mixture of sand particles and iron particles, and the sand particles are: 2-5% of iron particles: starting a turnover furnace to fully mix and rub waste batteries and solid particles, introducing heated nitrogen into the turnover furnace, discharging tail gas discharged by the turnover furnace into the turnover furnace again, stirring for 1-1.5H, drying and solidifying electrolyte in a battery cell, and drying and solidifying the electrolyte on the surfaces of the solid particles and the batteries and in the battery cell;
3) sieving: pouring out the waste batteries and the solid particles in the overturning furnace in the step 2), and filtering by using a screen to separate the waste batteries and the solid particles;
4) crushing: crushing the waste batteries obtained by sieving in the step 3) into waste battery crushed slag by using a crusher;
5) stirring: putting the crushed waste battery slag and the solid particles separated by sieving in the step 3) into a turnover furnace at the same time for fully mixing, wherein the solid particles and the waste battery slag are rubbed with each other in the mixing process, and the electrode plate coating layer and the dried and solidified electrolyte in the waste battery slag are separated from the solid surface by friction in the mixing process to become powder;
6) magnetic separation: putting the waste battery slag and solid particles stirred in the step 5) into a magnetic separator together, and separating magnetic substances and non-magnetic substances in the waste battery slag and the solid particles, wherein the magnetic substances are iron, cobalt and nickel solids, and the non-magnetic substances are plastics, sand grains, electrode slice coating layer solid powder and electrolyte solid powder;
7) chemical precipitation separation: dissolving the solid powder obtained by separation in the step 6) into alkali liquor, filtering to obtain a solution, pouring the solution into a reaction kettle, adding sulfuric acid into the reaction kettle to obtain metal sulfate, and adding sodium carbonate into the reaction kettle to obtain carbonate precipitate;
8) washing and drying: washing the carbonate precipitate obtained in the step 7) by using pure water, drying, and separating out cobalt ions, lithium ions and nickel ions in the form of carbonate crystals, thereby completing the recovery of the cobalt ions, the lithium ions and the nickel ions in the electrolyte and the electrode coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010915665.0A CN112103588B (en) | 2020-09-03 | 2020-09-03 | Lithium ion battery recovery processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010915665.0A CN112103588B (en) | 2020-09-03 | 2020-09-03 | Lithium ion battery recovery processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112103588A CN112103588A (en) | 2020-12-18 |
| CN112103588B true CN112103588B (en) | 2022-04-05 |
Family
ID=73757231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010915665.0A Active CN112103588B (en) | 2020-09-03 | 2020-09-03 | Lithium ion battery recovery processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112103588B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114247735B (en) * | 2021-11-10 | 2023-12-19 | 山西新科联环境技术有限公司 | Mixed solid waste recycling treatment method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103534A (en) * | 2018-08-08 | 2018-12-28 | 广东佳纳能源科技有限公司 | A kind of recovery method of waste and old lithium ion battery |
| CN110534834A (en) * | 2019-09-11 | 2019-12-03 | 新中天环保股份有限公司 | The recovery method of electrolyte in a kind of waste and old lithium ion battery |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100449011C (en) * | 2007-05-18 | 2009-01-07 | 北京矿冶研究总院 | Method for recovering valuable metal in invalid lithium ion battery |
| CN102251097B (en) * | 2011-07-08 | 2012-09-26 | 鞍山鑫普新材料有限公司 | Method for recovering metal from waste lithium battery |
| CN105428745B (en) * | 2015-11-30 | 2018-08-14 | 北京赛德美资源再利用研究院有限公司 | A kind of innoxious comprehensive reutilization method of applying waste lithium ionic power battery |
| CN106816663B (en) * | 2017-02-24 | 2020-09-08 | 中南大学 | Method for efficiently and safely discharging waste lithium ion batteries |
| CN106684487B (en) * | 2017-02-28 | 2019-07-02 | 中南大学 | A kind of waste and old lithium ionic cell electrolyte recovery method |
| CN108365290A (en) * | 2018-03-02 | 2018-08-03 | 中航锂电技术研究院有限公司 | A kind of full component recycle and reuse method of waste and old new-energy automobile lithium-ion-power cell |
| CN109473747A (en) * | 2018-09-11 | 2019-03-15 | 天能电池集团有限公司 | A kind of waste and old lithium ion battery dismantling recovery method |
| CN111525203A (en) * | 2020-04-30 | 2020-08-11 | 北矿机电科技有限责任公司 | Stirring type efficient complete discharge device and discharge method for power battery |
-
2020
- 2020-09-03 CN CN202010915665.0A patent/CN112103588B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103534A (en) * | 2018-08-08 | 2018-12-28 | 广东佳纳能源科技有限公司 | A kind of recovery method of waste and old lithium ion battery |
| CN110534834A (en) * | 2019-09-11 | 2019-12-03 | 新中天环保股份有限公司 | The recovery method of electrolyte in a kind of waste and old lithium ion battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112103588A (en) | 2020-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10189083B2 (en) | Method for recycling electrode materials of lithium ion batteries | |
| EP2312686B1 (en) | Method for implementing full cycle regeneration of waste lead acid battery | |
| CN104105803B (en) | The recovery method of lithium | |
| CN109088115A (en) | Waste lithium ion cell anode closed matereial cycle prepares tertiary cathode material method | |
| CN101916889B (en) | Method for preparing iron lithium phosphate by recovering water-system waste lithium-ion power battery | |
| CN110343864B (en) | Method for recovering lithium and cobalt in waste electrode material by microwave roasting assistance | |
| CN109546254B (en) | Treatment method of waste nickel cobalt lithium manganate ion battery positive electrode material | |
| CN108486376A (en) | A method of leaching metal in waste lithium ion cell anode material | |
| CN103219561B (en) | Lithium manganate cell positive electrode material recovery method | |
| US20230331571A1 (en) | Wet process for recovering valuable metals from lithium battery | |
| CN101710632A (en) | Method for recovering and restoring anode material graphite of waste lithium ion battery | |
| CN111778401B (en) | Waste ternary power lithium ion battery green recovery method based on electrolytic sodium sulfate | |
| CN106992329B (en) | A kind of resource utilization reuse method of waste and old lithium ion battery lithium iron phosphate positive material | |
| Zhao et al. | Recycling technology and principle of spent lithium-ion battery | |
| CN108172925A (en) | A kind of nickle cobalt lithium manganate ter-polymers cell anode waste recovery method | |
| CN109704300A (en) | A kind of method of lithium iron phosphate battery positive material recycling and reusing | |
| CN101499547A (en) | Positive electrode material recovering method for waste lithium ionic cell | |
| CN107768764A (en) | A kind of waste and old lithium ion battery recovery makes ternary precursor technique | |
| CN111961857A (en) | Method for synchronously defluorinating valuable metals leached from waste lithium ion batteries | |
| CN109103534B (en) | Recovery method of waste cobalt-containing lithium ion battery | |
| CN111987381A (en) | Method for synchronously defluorinating valuable metals leached from waste lithium ion batteries | |
| CN104409792A (en) | Waste lithium battery resource recycling method and application of product | |
| CN112186287A (en) | Ball-milling spray regeneration method for waste lithium ion battery anode material | |
| CN112103588B (en) | Lithium ion battery recovery processing method | |
| CN103276406B (en) | Electrochemical lithium recovery method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |