CN112652832A - Method for preparing negative electrode material by recycling negative electrode slurry - Google Patents
Method for preparing negative electrode material by recycling negative electrode slurry Download PDFInfo
- Publication number
- CN112652832A CN112652832A CN202011532307.8A CN202011532307A CN112652832A CN 112652832 A CN112652832 A CN 112652832A CN 202011532307 A CN202011532307 A CN 202011532307A CN 112652832 A CN112652832 A CN 112652832A
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- Prior art keywords
- slurry
- negative electrode
- recycling
- preparing
- treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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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
- 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
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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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a method for preparing a negative electrode material by recycling negative electrode slurry, and relates to the technical field of waste battery treatment. The method for preparing the anode material by recycling the anode slurry comprises the following steps: s1, collecting unqualified negative electrode slurry generated in lithium battery enterprise production as a raw material; s2, pouring the recovered cathode slurry into a sedimentation tank, controlling the standing time to be 3-5 h, and separating into an upper-layer solvent and a lower-layer sedimentation slurry; s3, taking the lower-layer precipitation slurry, and drying the lower-layer precipitation slurry by infrared heating equipment; s4, placing the dried precipitation slurry in a coarse crusher for coarse crushing treatment; s5, placing the coarsely crushed powder into a mechanical flour mill for granulation treatment; and S6, performing mixed batch and screening treatment on the granulated product, and then packaging. Unqualified negative pole slurry in lithium battery production enterprises is recycled and reasonably utilized to prepare a negative pole finished product, the operation process is simple, excessive post-treatment steps are not needed, and the cost is controllable.
Description
Technical Field
The invention relates to the technical field of waste battery treatment, in particular to a method for preparing a negative electrode material by recycling negative electrode slurry.
Background
The used batteries are collected to prevent the used batteries from entering an ecological system and causing harm to the environment, and the waste batteries contain a large amount of electrolyte solutions such as heavy metals, waste acid, waste alkali and the like. If the waste batteries are discarded at will, the rotten batteries can destroy water sources of people and erode crops and land on which people live, and the living environment of people faces huge threats, so that the used waste batteries are required to be recycled, the environment can be prevented from being polluted, and useful components in the waste batteries can be recycled, so that the resources are saved.
However, unqualified negative electrode slurry in the current lithium battery production enterprises is directly treated and cannot be effectively recycled, and the process flow of the current negative electrode slurry in the recycling process is complex, and the subsequent treatment steps are multiple, so that the cost is high.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for preparing a negative electrode material by recycling negative electrode slurry, which solves the problems that the unqualified negative electrode slurry in the current lithium battery production enterprises is directly processed and can not be effectively recycled, and the process flow is complicated in the process of recycling the current negative electrode slurry, and the subsequent processing steps are more complicated, so that the cost is higher.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a method for preparing an anode material by recycling anode slurry comprises the following steps:
s1, collecting unqualified negative electrode slurry generated in lithium battery enterprise production as a raw material;
s2, pouring the recovered cathode slurry into a sedimentation tank, controlling the standing time to be 3-5 h, and separating into an upper-layer solvent and a lower-layer sedimentation slurry;
s3, taking the lower-layer precipitation slurry, and drying the lower-layer precipitation slurry by infrared heating equipment;
s4, placing the dried precipitation slurry in a coarse crusher for coarse crushing treatment;
s5, placing the coarsely crushed powder into a mechanical flour mill for granulation treatment;
and S6, performing mixed batch and screening treatment on the granulated product, and then packaging.
Preferably, the temperature of the infrared heating device in S3 is controlled to be 25-40 ℃, and the time is controlled to be 0.5-1 h.
Preferably, the crushing particle size distribution of the precipitation slurry in S4 in the coarse crusher is controlled to be 0-2 mm.
Preferably, the powder material coarsely crushed in S5 is granulated in a mechanical mill to have a granulation particle size D50 of 16 ± 2 μm.
(III) advantageous effects
The invention provides a method for preparing a negative electrode material by recycling negative electrode slurry. The method has the following beneficial effects:
1. according to the invention, the unqualified cathode slurry in the lithium battery production enterprise is recycled and reasonably utilized to prepare the cathode finished product, the operation process is simple, excessive post-treatment steps are not needed, and the cost is controllable.
2. According to the invention, the infrared heating equipment is adopted for drying treatment, so that the time required by drying is reduced, the drying efficiency is accelerated, and the production efficiency of products is improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
the embodiment of the invention provides a method for preparing a negative electrode material by recycling negative electrode slurry, which comprises the following steps:
s1, collecting unqualified negative electrode slurry generated in lithium battery enterprise production as a raw material;
s2, pouring the recovered cathode slurry into a sedimentation tank, controlling the standing time to be 3-5 h, and separating into an upper-layer solvent and a lower-layer sedimentation slurry;
s3, taking the lower-layer precipitation slurry, and drying the lower-layer precipitation slurry by using infrared heating equipment, wherein the temperature of the infrared heating equipment is controlled to be 25-40 ℃, and the time is controlled to be 0.5-1 h;
s4, placing the dried precipitation slurry in a coarse crusher for coarse crushing treatment, wherein the crushing particle size distribution of the precipitation slurry in the coarse crusher is controlled to be 0-2 mm;
s5, placing the coarsely crushed powder into a mechanical mill, and performing granulation treatment, wherein the granulation particle size of the coarsely crushed powder in the mechanical mill is D50 ═ 16 +/-2 microns;
and S6, performing mixed batch and screening treatment on the granulated product, and then packaging.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A method for preparing a negative electrode material by recycling negative electrode slurry is characterized by comprising the following steps: the method comprises the following steps:
s1, collecting unqualified negative electrode slurry generated in lithium battery enterprise production as a raw material;
s2, pouring the recovered cathode slurry into a sedimentation tank, controlling the standing time to be 3-5 h, and separating into an upper-layer solvent and a lower-layer sedimentation slurry;
s3, taking the lower-layer precipitation slurry, and drying the lower-layer precipitation slurry by infrared heating equipment;
s4, placing the dried precipitation slurry in a coarse crusher for coarse crushing treatment;
s5, placing the coarsely crushed powder into a mechanical flour mill for granulation treatment;
and S6, performing mixed batch and screening treatment on the granulated product, and then packaging.
2. The method for preparing the anode material by recycling the anode slurry as claimed in claim 1, wherein: the temperature of the infrared heating equipment in the S3 is controlled to be 25-40 ℃, and the time is controlled to be 0.5-1 h.
3. The method for preparing the anode material by recycling the anode slurry as claimed in claim 1, wherein: the crushing particle size distribution of the precipitate slurry in the S4 in the coarse crusher is controlled to be 0-2 mm.
4. The method for preparing the anode material by recycling the anode slurry as claimed in claim 1, wherein: and the granulation particle size of the powder after the coarse crushing in the S5 is obtained by granulating in a mechanical mill, and is D50-16 +/-2 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011532307.8A CN112652832A (en) | 2020-12-22 | 2020-12-22 | Method for preparing negative electrode material by recycling negative electrode slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011532307.8A CN112652832A (en) | 2020-12-22 | 2020-12-22 | Method for preparing negative electrode material by recycling negative electrode slurry |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112652832A true CN112652832A (en) | 2021-04-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011532307.8A Pending CN112652832A (en) | 2020-12-22 | 2020-12-22 | Method for preparing negative electrode material by recycling negative electrode slurry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112652832A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583310A (en) * | 2022-03-08 | 2022-06-03 | 荆门亿纬创能锂电池有限公司 | Method for recycling lithium ion battery cathode slurry |
Citations (6)
| 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 |
| CN105186059A (en) * | 2015-09-23 | 2015-12-23 | 合肥国轩高科动力能源有限公司 | Recycling method of graphite material of negative electrode of failed square lithium ion battery |
| CN204905378U (en) * | 2015-09-14 | 2015-12-23 | 东莞市魔方新能源科技有限公司 | Diaphragm coating thick liquids recovery processing device |
| CN106159371A (en) * | 2016-08-31 | 2016-11-23 | 合肥国轩高科动力能源有限公司 | Method for recovering waste slurry of lithium iron phosphate power battery |
| CN110589833A (en) * | 2019-09-03 | 2019-12-20 | 福建晶安光电有限公司 | Method for recycling boron carbide in grinding waste slurry and application method thereof |
| CN111088430A (en) * | 2019-12-26 | 2020-05-01 | 甘肃睿思科新材料有限公司 | Recovery processing method of waste slurry of lithium battery positive electrode |
-
2020
- 2020-12-22 CN CN202011532307.8A patent/CN112652832A/en active Pending
Patent Citations (6)
| 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 |
| CN204905378U (en) * | 2015-09-14 | 2015-12-23 | 东莞市魔方新能源科技有限公司 | Diaphragm coating thick liquids recovery processing device |
| CN105186059A (en) * | 2015-09-23 | 2015-12-23 | 合肥国轩高科动力能源有限公司 | Recycling method of graphite material of negative electrode of failed square lithium ion battery |
| CN106159371A (en) * | 2016-08-31 | 2016-11-23 | 合肥国轩高科动力能源有限公司 | Method for recovering waste slurry of lithium iron phosphate power battery |
| CN110589833A (en) * | 2019-09-03 | 2019-12-20 | 福建晶安光电有限公司 | Method for recycling boron carbide in grinding waste slurry and application method thereof |
| CN111088430A (en) * | 2019-12-26 | 2020-05-01 | 甘肃睿思科新材料有限公司 | Recovery processing method of waste slurry of lithium battery positive electrode |
Non-Patent Citations (1)
| Title |
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| 张璟主编: "《食品微生物检验技术及设备操作指南》", 31 August 2017, 甘肃文化出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583310A (en) * | 2022-03-08 | 2022-06-03 | 荆门亿纬创能锂电池有限公司 | Method for recycling lithium ion battery cathode slurry |
| CN114583310B (en) * | 2022-03-08 | 2024-03-15 | 荆门亿纬创能锂电池有限公司 | Method for recycling lithium ion battery negative electrode slurry |
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Application publication date: 20210413 |