CN104831072A - Recycling method of waste lithium iron phosphate battery positive electrode - Google Patents
Recycling method of waste lithium iron phosphate battery positive electrode Download PDFInfo
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- CN104831072A CN104831072A CN201510170723.0A CN201510170723A CN104831072A CN 104831072 A CN104831072 A CN 104831072A CN 201510170723 A CN201510170723 A CN 201510170723A CN 104831072 A CN104831072 A CN 104831072A
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- lithium
- iron phosphate
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- phosphate battery
- positive pole
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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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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Abstract
A recycling method of a waste lithium iron phosphate battery positive electrode comprises steps of: (1) pretreating a waste positive electrode sheet; (2) soaking the pretreated waste positive electrode sheet in an alkali lye; step (3) filtering the solid in the soaking solution, dissolving the solid in a mixed acid solution; (4) filtering the lithium-containing filtrate, adding a saturated sodium carbonate solution at 95 DEG C, and precipitating to obtain lithium carbonate. The invention uses alkali and acid with low concentration and conventional chemicals, recovers the lithium in waste lithium iron phosphate battery positive electrode by a simple and effective way, not only can reduce environmental pollution caused by the lithium-ion development process, but also can use simple and effective apparatus and method to recover cost-effective materials.
Description
Technical field
The present invention relates to a kind of waste lithium iron phosphate battery positive pole recovery method, belong to lithium cell recovery technology field.
Background technology
Lithium ion battery have have extended cycle life, the advantage such as specific energy is high, discharging voltage balance, volume are little, memory-less effect.Lithium ion battery can be used in the fields such as handheld device, satellite, redundant electrical power, electromobile, has vast potential for future development.
The enforcement of China 863 new-energy automobile key special subjects, the marketization and the industrialization that can predict China's power truck will very near coming.Estimate that the year two thousand twenty China electric automobile market scale will reach 8,000,000, the year two thousand thirty will reach 9,500 ten thousand especially.In recent years, based on the exploitation to renewable energy source, huge demand will be had to energy storage device.Single with regard to wind energy one, the wind power generation installed capacity expecting the year two thousand twenty China will reach 200GW.According to the research of national grid associated mechanisms, stored energy capacitance need be fitted on the 20%-30% of installed capacity of wind-driven power.
Iron lithium phosphate has the advantages such as safety, environmental protection, good stability, specific storage are high, low price, is considered to candidate's positive electrode material important in power cell and energy-storage battery.Therefore, the market potential of ferric phosphate lithium cell is very huge.Can predict, the output of LiFePO 4 material and usage quantity will significantly promote.So the recovery of waste lithium iron phosphate battery also has great meaning, is not only conducive to the protection of environment, is more conducive to the recycling of resource.
At present, lithium-ion secondary cell recovery process is divided into: soda acid dissolves lixiviation process, chemical precipitation and salting-out process, ion exchange method, extraction process and electrodip process.Domestic and international waste lithium cell reclaims research major part about small size digital product lithium-ion secondary celies such as cobalt acid lithium systems, and ferric phosphate lithium cell development in recent years rapidly, and ferric phosphate lithium cell reclaims Study on extraction and still belongs to the first time.
Summary of the invention
The object of the invention is, reclaim the defect of waste lithium iron phosphate battery for prior art, the present invention seeks a kind of simple and effective way and reclaims lithium in waste lithium iron phosphate battery positive pole.
The soda acid lixiviation process that the present invention proposes reclaims the method for lithium in waste lithium iron phosphate battery positive pole, is that soda acid dissolves waste positive, generates different substances and dissolve situation in the solution and take full advantage of PO in iron lithium phosphate by reaction
4 3-effect, reclaim lithium respectively in the simple mode of effective cost effective method.
The step of a kind of waste lithium iron phosphate battery of the present invention positive pole recovery method is as follows:
(1) pre-treatment is carried out to positive pole waste paper: take waste lithium iron phosphate battery apart, take off positive pole waste paper, heat at 200-500 DEG C, heating 3-4 hour;
(2) by through pretreated positive pole waste paper, be placed in alkali lye and soak 3-5 hour;
(3) filtration step (2) gained solid, is dissolved in mix acid liquor, and to there being Precipitation, lithium enters in solution with ion component;
(4) step (3) is filtered gained containing lithium filtrate, add 95 DEG C of saturated sodium carbonate solutions, precipitation obtains Quilonum Retard.
Mix acid liquor described in the present invention is at least one or several in sulfuric acid, hydrochloric acid, nitric acid, bromic acid, superoxol.
Acid concentration described in the present invention is 0.1mol/L-4mol/L.
The invention has the beneficial effects as follows, the present invention uses soda acid and the general chemical of low concentration, the lithium in iron lithium phosphate waste lithium cell positive plate is reclaimed by simple and effective way, not only can reduce the problem of environmental pollution brought in lithium ion evolution, simple and effective equipment and method can be used again, reclaim the raw material that it has an economic benefit.
Accompanying drawing explanation
Fig. 1 is that soda acid leaches waste lithium iron phosphate battery anode pole piece recovery process figure.
Embodiment
Below in conjunction with specific embodiment, the present invention will be described in detail, and the explanation of the invention is not limited.The reagent used is analytical pure.
Take ferric phosphate lithium cell apart, its positive pole is taken out, weigh 11.8564 grams, be placed in 200 DEG C of heating 4h, by through pretreated positive pole waste paper, be placed in beaker, add 250mlNaOH and soak 4 hours; After above-mentioned filtration, filter residue dissolution of solid is in the mix acid liquor of sulfuric acid+hydrochloric acid, and lithium enters in solution with ion component; Filter, containing lithium ion in filtrate, add 95 DEG C of saturated sodium carbonates, lithium with Quilonum Retard solid precipitation out, is weighed to obtain 1.94 grams.
Claims (3)
1. a waste lithium iron phosphate battery positive pole recovery method, is characterized in that, the step of described method:
(1) pre-treatment is carried out to positive pole waste paper: take waste lithium iron phosphate battery apart, take off positive pole waste paper, heat at 200-500 DEG C, heating 3-4 hour;
(2) by through pretreated positive pole waste paper, be placed in alkali lye and soak 3-5 hour;
(3) filtration step (2) gained solid, is dissolved in mix acid liquor, and to there being Precipitation, lithium enters in solution with ion component;
(4) step (3) is filtered gained containing lithium filtrate, add 95 DEG C of saturated sodium carbonate solutions, precipitation obtains Quilonum Retard.
2. a kind of waste lithium iron phosphate battery positive pole recovery method according to claim 1, is characterized in that, described mix acid liquor is at least one or several in sulfuric acid, hydrochloric acid, nitric acid, bromic acid or superoxol.
3. a kind of waste lithium iron phosphate battery positive pole recovery method according to claim 2, it is characterized in that, described increasing mixed acid concentration is 0.1mol/L-4mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510170723.0A CN104831072A (en) | 2015-04-13 | 2015-04-13 | Recycling method of waste lithium iron phosphate battery positive electrode |
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| CN201510170723.0A CN104831072A (en) | 2015-04-13 | 2015-04-13 | Recycling method of waste lithium iron phosphate battery positive electrode |
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| CN201510170723.0A Pending CN104831072A (en) | 2015-04-13 | 2015-04-13 | Recycling method of waste lithium iron phosphate battery positive electrode |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119024A (en) * | 2015-09-18 | 2015-12-02 | 国网北京市电力公司 | Recovery method of lithium |
| CN106450547A (en) * | 2016-10-19 | 2017-02-22 | 荆门市格林美新材料有限公司 | Method for recycling iron phosphate and lithium carbonate from lithium iron phosphate waste |
| CN106684486A (en) * | 2016-12-28 | 2017-05-17 | 天津先众新能源科技股份有限公司 | Method for extracting lithium from waste lithium iron phosphate |
| CN106910959A (en) * | 2017-05-04 | 2017-06-30 | 北京科技大学 | A kind of method of selective recovery lithium in waste material from LiFePO4 |
| CN106981699A (en) * | 2017-05-13 | 2017-07-25 | 合肥国轩高科动力能源有限公司 | A kind of method that lithium is reclaimed from waste lithium iron phosphate battery |
| CN107017444A (en) * | 2017-04-18 | 2017-08-04 | 中科过程（北京）科技有限公司 | A kind of method of metal recovery in waste lithium iron phosphate battery |
| CN107540004A (en) * | 2017-09-21 | 2018-01-05 | 合肥国轩高科动力能源有限公司 | A kind of method of waste lithium iron phosphate battery positive mix recovery battery-level lithium carbonate |
| WO2018036568A1 (en) * | 2016-08-26 | 2018-03-01 | 湖南金源新材料股份有限公司 | Method for extracting lithium carbonate from lithium iron phosphate battery waste material, and lithium carbonate obtained thereby |
| CN108899603A (en) * | 2018-06-21 | 2018-11-27 | 南充中芯新能源科技有限公司 | A kind of processing method of waste lithium cell positive electrode and the recovery processing technique of waste lithium cell |
| 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 |
| CN109167118A (en) * | 2018-07-26 | 2019-01-08 | 中国科学院过程工程研究所 | The method of comprehensive utilization of ferric phosphate lithium cell electrode material |
| CN110015670A (en) * | 2018-01-08 | 2019-07-16 | 邓祖德 | A kind of method and lithium carbonate product recycling lithium from lithium iron phosphate positive material |
| CN116375059A (en) * | 2023-03-17 | 2023-07-04 | 赣州赛可韦尔科技有限公司 | Technology for preparing lithium carbonate by recycling waste lithium iron phosphate battery through one-step method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280610A (en) * | 2013-03-29 | 2013-09-04 | 江西省电力科学研究院 | Method for recovering waste lithium iron phosphate battery positive pieces |
-
2015
- 2015-04-13 CN CN201510170723.0A patent/CN104831072A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280610A (en) * | 2013-03-29 | 2013-09-04 | 江西省电力科学研究院 | Method for recovering waste lithium iron phosphate battery positive pieces |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119024A (en) * | 2015-09-18 | 2015-12-02 | 国网北京市电力公司 | Recovery method of lithium |
| US10919775B2 (en) | 2016-08-26 | 2021-02-16 | Hunan Jinyuan New Materials Co., Ltd. | Method for preparing lithium carbonate from lithium iron phosphate battery scraps and lithium carbonate thereof |
| WO2018036568A1 (en) * | 2016-08-26 | 2018-03-01 | 湖南金源新材料股份有限公司 | Method for extracting lithium carbonate from lithium iron phosphate battery waste material, and lithium carbonate obtained thereby |
| CN106450547B (en) * | 2016-10-19 | 2020-03-27 | 荆门市格林美新材料有限公司 | Method for recovering iron phosphate and lithium carbonate from lithium iron phosphate waste |
| CN106450547A (en) * | 2016-10-19 | 2017-02-22 | 荆门市格林美新材料有限公司 | Method for recycling iron phosphate and lithium carbonate from lithium iron phosphate waste |
| CN106684486A (en) * | 2016-12-28 | 2017-05-17 | 天津先众新能源科技股份有限公司 | Method for extracting lithium from waste lithium iron phosphate |
| CN107017444A (en) * | 2017-04-18 | 2017-08-04 | 中科过程（北京）科技有限公司 | A kind of method of metal recovery in waste lithium iron phosphate battery |
| CN106910959A (en) * | 2017-05-04 | 2017-06-30 | 北京科技大学 | A kind of method of selective recovery lithium in waste material from LiFePO4 |
| CN106981699A (en) * | 2017-05-13 | 2017-07-25 | 合肥国轩高科动力能源有限公司 | A kind of method that lithium is reclaimed from waste lithium iron phosphate battery |
| CN107540004A (en) * | 2017-09-21 | 2018-01-05 | 合肥国轩高科动力能源有限公司 | A kind of method of waste lithium iron phosphate battery positive mix recovery battery-level lithium carbonate |
| CN110015670A (en) * | 2018-01-08 | 2019-07-16 | 邓祖德 | A kind of method and lithium carbonate product recycling lithium from lithium iron phosphate positive material |
| CN108899603A (en) * | 2018-06-21 | 2018-11-27 | 南充中芯新能源科技有限公司 | A kind of processing method of waste lithium cell positive electrode and the recovery processing technique of waste lithium cell |
| CN109167118A (en) * | 2018-07-26 | 2019-01-08 | 中国科学院过程工程研究所 | The method of comprehensive utilization of ferric phosphate lithium cell electrode material |
| CN109167118B (en) * | 2018-07-26 | 2020-07-10 | 中国科学院过程工程研究所 | Comprehensive utilization method of lithium iron phosphate battery electrode material |
| 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 |
| CN109103534B (en) * | 2018-08-08 | 2020-05-29 | 广东佳纳能源科技有限公司 | Recovery method of waste cobalt-containing lithium ion battery |
| CN116375059A (en) * | 2023-03-17 | 2023-07-04 | 赣州赛可韦尔科技有限公司 | Technology for preparing lithium carbonate by recycling waste lithium iron phosphate battery through one-step method |
| CN116375059B (en) * | 2023-03-17 | 2024-04-26 | 赣州赛可韦尔科技有限公司 | Technology for preparing lithium carbonate by recycling waste lithium iron phosphate battery through one-step method |
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Application publication date: 20150812 |