CN112111650B - Method for recovering valuable metals of waste lithium ion batteries by selective reduction - Google Patents
Method for recovering valuable metals of waste lithium ion batteries by selective reduction Download PDFInfo
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- CN112111650B CN112111650B CN202010996025.7A CN202010996025A CN112111650B CN 112111650 B CN112111650 B CN 112111650B CN 202010996025 A CN202010996025 A CN 202010996025A CN 112111650 B CN112111650 B CN 112111650B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/02—Oxides; Hydroxides
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G45/00—Compounds of manganese
- C01G45/02—Oxides; Hydroxides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/02—Obtaining nickel or cobalt by dry processes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
- C22B26/12—Obtaining lithium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B47/00—Obtaining manganese
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
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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
- 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
Abstract
The invention relates to a method for recovering valuable metals of waste lithium ion batteries by selective reduction, belonging to the technical field of waste lithium ion battery recovery. The method of the invention comprises the following steps: crushing the waste ternary lithium ion battery, and then screening, magnetically separating and winnowing to obtain ternary electric core powder; mixing brown coal powder and ternary electric core powder in a mass ratio of 0.2-2: 1, uniformly mixing, roasting at 500-800 ℃ for 5-8 h, and cooling to obtain reducing powder I; screening the reduction powder I to obtain metal coarse cobalt and separation powder I containing nickel and manganese; reducing agent and separating powder I according to the mass ratio of 0.2-2: 1, uniformly mixing, roasting at 800-1200 ℃ for 5-8 h, cooling to obtain reducing powder II, and introducing inert gas for roasting in the roasting process; absorbing the roasted tail gas with water to obtain a LiOH solution; and screening the reduction powder II to obtain crude metal nickel and separation powder II containing manganese oxide. The method has the advantages of small process pollution, simple subsequent treatment, short flow and high equipment utilization rate.
Description
Technical Field
The invention relates to a method for recovering valuable metals of waste lithium ion batteries by selective reduction, belonging to the technical field of waste lithium ion battery recovery.
Background
The existing recovery method of the waste ternary lithium battery is generally divided into a fire method and a wet method. The pyrogenic process generally roasts the anode material of the waste ternary lithium battery at high temperature, and then leaches to obtain a lithium-containing solution and a slag phase containing nickel, cobalt and manganese. And (4) treating the slag phase, and separating to obtain the nickel, cobalt and manganese. The wet method is to leach the anode material of the waste ternary lithium battery with alkaline or acid solution, and then separate to obtain the relevant products of lithium, nickel, cobalt and manganese.
After leaching lithium products are obtained by pyrogenic process, nickel-cobalt-copper alloy or mixture of nickel and cobalt metal and the like are obtained by separation, and the slag phase containing nickel, cobalt and manganese is not utilized further. In addition, because nickel and cobalt are all ferromagnetic, the mixture of nickel and cobalt metals is difficult to separate by a physical method. The nickel-cobalt-copper alloy is refined by electrolytic separation, and has the defects of high separation difficulty, long process flow, high energy consumption and the like.
The wet method is generally to dissolve the anode material of the waste ternary lithium battery by using an alkaline or acidic solution, then remove impurities from the leachate, and obtain the relevant products of lithium, nickel, cobalt and manganese by extraction, precipitation and other modes, and has the defects of long process flow, large waste liquid yield, easy secondary pollution and the like.
CN201710251703.5 discloses mixing a waste battery which is primarily crushed and enriched with metal elements and a copper-containing electronic waste, adding a slag former and a reducing agent in a certain ratio to perform an oxidation-reduction reaction, wherein in the reaction process, oxides formed by iron, aluminum and the like enter an upper layer slag phase, and metal cobalt and nickel enter a copper liquid at a bottom layer, so as to separate the metal phase from the slag phase and obtain metals containing copper, cobalt and nickel, and then performing electrolytic refining to recover high-purity metals such as copper, cobalt, nickel and the like respectively. The reducing agent is one or a combination of more of coke, activated carbon, natural gas and plastics, and the medium-high temperature smelting temperature is 800-1400 ℃.
CN201911036367.8 discloses that the anode material powder obtained by splitting, crushing and screening waste lithium ion batteries is reduced by carbonaceous reducing agentAnd (3) carrying out primary roasting, mixing the obtained roasted product with water, adding a proper amount of calcium chloride or lime milk solution for reaction and transformation, and selectively extracting lithium carbonate in the roasted product into the solution so as to realize separation from nickel, cobalt, manganese, iron, aluminum, phosphorus and the like. The carbonaceous reducing agent is one or more of pulverized coal, natural gas, carbon monoxide, coke powder, carbon powder, graphite and biomass, and the carbonaceous reducing agent is preferably one or more of natural gas, carbon monoxide, coke powder and carbon powder. The roasting temperature of the reduction roasting is 500-1100 ℃, and preferably 550-850 ℃. In example 1 of this patent, it is mentioned that nickel and cobalt are reduced to obtain metals and manganese is reduced to MnO in reduction with CO2。
Although the above patent obtains the alloy of copper, cobalt and nickel and the metals of nickel and cobalt through reduction, the problem of difficult separation of valuable metals exists, and the economic benefit is influenced.
Disclosure of Invention
The invention aims to solve the first technical problem of providing a novel method for recovering valuable metals of waste lithium ion batteries.
In order to solve the first technical problem, the method for selectively reducing and recovering the valuable metals of the waste lithium ion batteries comprises the following steps:
A. crushing the ternary lithium ion battery, screening, magnetically separating and winnowing to obtain ternary electric core powder;
B. reducing agent A and ternary electric core powder in a mass ratio of 0.2-2: 1, uniformly mixing, roasting at 500-800 ℃ for 5-8 h, cooling to obtain reducing powder I, introducing inert gas in the roasting process, wherein the reducing agent A is at least one of lignite powder or bituminous coal;
C. screening the reduction powder I to obtain metal coarse cobalt and separation powder I containing nickel and manganese;
D. reducing agent B and separating powder I according to a mass ratio of 0.2-2: 1, mixing, roasting at 800-1200 ℃ for 5-8 h, cooling to obtain reducing powder II, and introducing inert gas for roasting in the roasting process;
absorbing the roasted tail gas with water to obtain a LiOH solution;
the reducing agent B is activated carbon powder, coke powder, CO and H2At least one of;
E. and screening the reduction powder II to obtain crude metal nickel and separation powder II containing manganese oxide.
And A, crushing the waste ternary lithium ion battery, and then screening, magnetically separating and winnowing to remove most of iron, aluminum and copper.
The ternary lithium ion battery can adopt a waste ternary lithium ion battery, so that the aim of changing waste into valuable is fulfilled.
In one embodiment, the method further comprises: electrolyzing the crude cobalt to obtain cobalt; electrolyzing the crude metal nickel to obtain metal nickel.
In one embodiment, the LiOH solution is evaporated to yield a LiOH solid.
In a specific embodiment, the particle size of the ternary electric core powder is less than 50 μm, and the particle size of the solid reducing agent A or B is preferably 380-2000 μm.
In a specific embodiment, the B step is carried out at 500-700 ℃.
In a specific embodiment, the reducing agent A and the ternary core powder in the step B are in a mass ratio of 0.2-1: 1.
In a specific embodiment, the screening in the step C is a screen with 20-140 meshes.
In a specific embodiment, the D step is carried out at 850-1100 ℃.
In a specific embodiment, the mass ratio of the reducing agent B to the separating powder I in the step D is 1-2: 1.
In a specific embodiment, the screening in the step E is a screen with 20-140 meshes.
Has the advantages that:
the invention provides a novel process, which is characterized in that different reducing agents are used for carrying out selective reduction roasting on a battery cell crushed material of a waste ternary lithium battery at different temperatures to respectively obtain crude metals such as cobalt, nickel and the like and products such as lithium hydroxide, manganese dioxide and the like. The crude metals of cobalt and nickel can be further refined by electrolysis to obtain high-purity cobalt and nickel metals.
The process of the invention does not need acidic and alkaline liquids and an extractant, has little pollution, simple subsequent treatment, short flow and high equipment utilization rate.
The method realizes the separation and refining of cobalt and nickel with low energy consumption and low cost, and solves the problem of difficult recovery and utilization of nickel and cobalt in the pyrogenic process recovery process.
The separation rate of Co is more than 95%, the separation rate of Li is more than 95%, and the separation rate of Ni is more than 94%.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
In order to solve the first technical problem, the method for selectively reducing and recovering the valuable metals of the waste lithium ion batteries comprises the following steps:
A. crushing the ternary lithium ion battery, screening, magnetically separating and winnowing to obtain ternary electric core powder;
B. reducing agent A and ternary electric core powder in a mass ratio of 0.2-2: 1, uniformly mixing, roasting at 500-800 ℃ for 5-8 h, cooling to obtain reducing powder I, introducing inert gas in the roasting process, wherein the reducing agent A is at least one of lignite powder or bituminous coal;
C. screening the reduction powder I to obtain metal coarse cobalt and separation powder I containing nickel and manganese;
D. reducing agent B and separating powder I according to a mass ratio of 0.2-2: 1, mixing, roasting at 800-1200 ℃ for 5-8 h, cooling to obtain reducing powder II, and introducing inert gas for roasting in the roasting process;
absorbing the roasted tail gas with water to obtain a LiOH solution;
the reducing agent B is activated carbon powder, coke powder, CO and H2At least one of;
E. and screening the reduction powder II to obtain crude metal nickel and separation powder II containing manganese oxide.
And A, crushing the waste ternary lithium ion battery, and then screening, magnetically separating and winnowing to remove most of iron, aluminum and copper.
The ternary lithium ion battery can adopt a waste ternary lithium ion battery, so that the aim of changing waste into valuable is fulfilled.
In one embodiment, the method further comprises: electrolyzing the crude cobalt to obtain cobalt; electrolyzing the crude metal nickel to obtain metal nickel.
In one embodiment, the LiOH solution is evaporated to yield a LiOH solid.
In a specific embodiment, the particle size of the ternary electric core powder is less than 50 μm, and the particle size of the solid reducing agent A or B is preferably 380-2000 μm.
In a specific embodiment, the B step is carried out at 500-700 ℃.
In a specific embodiment, the reducing agent A and the ternary core powder in the step B are in a mass ratio of 0.2-1: 1. .
In a specific embodiment, the screening in the step C is a screen with 20-140 meshes.
In a specific embodiment, the D step is carried out at 850-1100 ℃.
In a specific embodiment, the mass ratio of the reducing agent B to the separating powder I in the step D is 1-2: 1.
In a specific embodiment, the screening in the step E is a screen with 20-140 meshes.
The following examples are provided to further illustrate the embodiments of the present invention and are not intended to limit the scope of the present invention.
Example 1
A method for selectively reducing and recovering valuable metals of waste lithium ion batteries comprises the following steps:
1. crushing the waste ternary lithium ion battery, screening, magnetically separating, and winnowing to remove most of iron, aluminum and copper to obtain ternary battery cell powder with the particle size of less than 50 mu m. Uniformly mixing the crushed lignite with the particle size of 380-2000 mu m and the ternary cell powder in a mass ratio of 0.2:1, putting the mixture into a porcelain boat, roasting for 8 hours at 500 ℃, and introducing inert gas in the roasting process. And cooling to obtain reduced powder I.
2. And screening the roasted reduction powder I to obtain granular metal coarse cobalt and separation powder I containing nickel and manganese.
3. And (2) taking the crushed coke with the particle size of 380-2000 mu m as a reducing agent, uniformly mixing the reducing agent and the separation powder I obtained after the metal cobalt is separated in the step (2) according to the mass ratio of 2:1, putting the mixture into a porcelain boat, roasting the mixture at 1200 ℃ for 5 hours, introducing inert gas in the roasting process, absorbing tail gas by water to obtain a LiOH solution, and evaporating the LiOH solution to obtain a LiOH solid. And cooling the roasted product to obtain reduced powder II.
4. And (4) screening the reduction powder II obtained in the step (3) to obtain crude metal nickel and separation powder II containing manganese oxide.
5. Electrolytic refining of crude cobalt and metal nickel and cobalt obtained from crude nickel.
TABLE 1 data table for nickel cobalt separation (unit:%)
| Sample name | Li | Ni | Mn | Co | Li separation ratio | Separation ratio of Ni | Separation ratio of Co |
| Reducing powder I | 3.65 | 7.70 | 6.81 | 3.16 | / | / | / |
| Isolate powder I | 3.66 | 7.84 | 7.12 | 0.19 | / | / | 95.1 |
| Separating powder II | 0.10 | 0.33 | 7.90 | / | 97.6 | 96.3 | / |
Example 2
A method for selectively reducing and recovering valuable metals of waste lithium ion batteries comprises the following steps:
1. crushing the waste ternary lithium ion battery, screening, magnetically separating, and winnowing to remove most of iron, aluminum and copper to obtain ternary battery cell powder with the particle size of less than 50 mu m. Uniformly mixing the crushed lignite with the particle size of 380-2000 mu m and the ternary cell powder in a mass ratio of 1:1, putting the mixture into a porcelain boat, roasting for 6.5 hours at 650 ℃, and introducing inert gas in the roasting process. And cooling to obtain reduced powder I.
2. And screening the roasted reduction powder I to obtain granular metal coarse cobalt and separation powder I containing nickel and manganese.
3. And (2) taking crushed activated carbon with the particle size of 380-2000 mu m as a reducing agent, uniformly mixing the reducing agent and the separation powder I obtained after the metal cobalt is separated in the step (2) according to the mass ratio of 1:1, putting the mixture into a porcelain boat, roasting the mixture at 1000 ℃ for 6.5 hours, introducing inert gas in the roasting process, absorbing tail gas by water to obtain a LiOH solution, and evaporating the LiOH solution to obtain a LiOH solid. And cooling the roasted product to obtain reduced powder II.
4. And (4) screening the reduction powder II obtained in the step (3) to obtain crude metal nickel and separation powder II containing manganese oxide.
5. Electrolytic refining of crude cobalt and metal nickel and cobalt obtained from crude nickel.
TABLE 2 data of nickel cobalt separation table (unit:%)
| Sample name | Li | Ni | Mn | Co | Li separation ratio | Separation ratio of Ni | Separation ratio of Co |
| Reducing powder I | 3.49 | 8.64 | 7.83 | 3.50 | / | / | / |
| Isolate powder I | 3.61 | 8.94 | 8.10 | 0.14 | / | / | 96.2 |
| Separating powder II | 0.14 | 0.38 | 7.90 | / | 96.5 | 95.7 | / |
Example 3
A method for selectively reducing and recovering valuable metals of waste lithium ion batteries comprises the following steps:
1. crushing the waste ternary lithium ion battery, screening, magnetically separating, and winnowing to remove most of iron, aluminum and copper to obtain ternary battery cell powder with the particle size of less than 50 mu m. Uniformly mixing the crushed lignite with the particle size of 380-2000 mu m and the ternary cell powder in a mass ratio of 2:1, putting the mixture into a porcelain boat, roasting for 5 hours at 800 ℃, and introducing inert gas in the roasting process. And cooling to obtain reduced powder I.
2. And screening the roasted reduction powder I to obtain granular metal coarse cobalt and separation powder I containing nickel and manganese.
3. And (2) taking the crushed coke with the particle size of 380-2000 mu m as a reducing agent, uniformly mixing the reducing agent and the separation powder I obtained after the metal cobalt is separated in the step (2) according to the mass ratio of 0.2:1, putting the mixture into a porcelain boat, roasting the mixture at 800 ℃ for 8 hours, introducing inert gas in the roasting process, absorbing tail gas by water to obtain a LiOH solution, and evaporating the LiOH solution to obtain a LiOH solid. And cooling the roasted product to obtain reduced powder II.
4. And (4) screening the reduction powder II obtained in the step (3) to obtain crude metal nickel and separation powder II containing manganese oxide.
5. Electrolytic refining of crude cobalt and metal nickel and cobalt obtained from crude nickel.
TABLE 3 data table for nickel cobalt separation (unit:%)
| Sample name | Li | Ni | Mn | Co | Li separation ratio | Separation ratio of Ni | Separation ratio of Co |
| Reducing powder I | 3.90 | 8.44 | 7.61 | 3.42 | / | / | / |
| Isolate powder I | 4.03 | 8.73 | 7.87 | 0.11 | / | / | 96.8 |
| Separating powder II | 0.20 | 9.36 | 8.95 | / | 95.7 | 94.3 | / |
Comparative example 1
Uniformly mixing the crushed lignite with ternary cell powder in a mass ratio of 2:1, putting the mixture into a porcelain boat, roasting for 8 hours at 400 ℃, and introducing inert gas in the roasting process. The fired sample showed no metallic lustrous particles. Magnetic separation is carried out by a magnetic bar, and no metal particles are adsorbed on the magnetic bar.
Uniformly mixing the activated carbon powder and the ternary cell powder in a mass ratio of 2:1, putting the mixture into a porcelain boat, roasting the porcelain boat for 8 hours at 800 ℃, and introducing inert gas in the roasting process. The fired sample showed no metallic lustrous particles. Magnetic separation is carried out by a magnetic bar, and no metal particles are adsorbed on the magnetic bar.
Claims (13)
1. The method for selectively reducing and recovering valuable metals of the waste lithium ion battery is characterized by comprising the following steps:
A. crushing the ternary lithium ion battery, screening, magnetically separating and winnowing to obtain ternary electric core powder;
B. reducing agent A and ternary electric core powder in a mass ratio of 0.2-2: 1, uniformly mixing, roasting at 500-800 ℃ for 5-8 h, cooling to obtain reducing powder I, introducing inert gas in the roasting process, wherein the reducing agent A is at least one of lignite powder or bituminous coal;
C. screening the reduction powder I to obtain metal coarse cobalt and separation powder I containing nickel and manganese;
D. reducing agent B and separating powder I according to a mass ratio of 0.2-2: 1, mixing, roasting at 800-1200 ℃ for 5-8 h, cooling to obtain reducing powder II, and introducing inert gas for roasting in the roasting process;
absorbing the roasted tail gas with water to obtain a LiOH solution;
the reducing agent B is activated carbon powder, coke powder, CO and H2At least one of;
E. and screening the reduction powder II to obtain crude metal nickel and separation powder II containing manganese oxide.
2. The method for selectively reductively recovering valuable metals of spent lithium ion batteries according to claim 1, characterized in that the method further comprises: electrolyzing the crude cobalt to obtain cobalt; electrolyzing the crude metal nickel to obtain metal nickel.
3. The method for selectively reducing and recovering valuable metals of waste lithium ion batteries according to claim 1 or 2, characterized in that LiOH solution is evaporated to obtain LiOH solid.
4. The method for selectively reducing and recovering valuable metals of waste lithium ion batteries according to claim 1 or 2, characterized in that the particle size of the ternary core powder is less than 50 μm.
5. The method for selectively reducing and recycling valuable metals of waste lithium ion batteries according to claim 1 or 2, characterized in that the particle size of the solid reducing agent A or B is 380-2000 μm.
6. The method for recovering valuable metals of waste lithium ion batteries through selective reduction according to claim 1 or 2, wherein the step B is carried out at 500-700 ℃ for roasting.
7. The method for selectively reducing and recycling valuable metals of waste lithium ion batteries according to claim 1 or 2, wherein the reducing agent A and the ternary electric core powder in the step B are in a mass ratio of 0.2-1: 1.
8. The method for selectively reducing and recycling valuable metals of waste lithium ion batteries according to claim 1 or 2, characterized in that a sieve of 20-140 meshes is adopted in the sieving in the step C.
9. The method for selectively reducing and recycling valuable metals of waste lithium ion batteries according to claim 3, wherein the screening in the step C is a 20-140-mesh screen.
10. The method for selectively reducing and recycling valuable metals of waste lithium ion batteries according to claim 1 or 2, wherein the D step is carried out at 850-1100 ℃.
11. The method for selectively reducing and recycling valuable metals of waste lithium ion batteries according to claim 1 or 2, wherein the mass ratio of the reducing agent B to the separating powder I in the step D is 1-2: 1.
12. the method for selectively reducing and recycling the valuable metals of the waste lithium ion batteries according to claim 1 or 2, wherein the screening in the step E is a screen of 20-140 meshes.
13. The method for selectively reducing and recycling valuable metals of waste lithium ion batteries according to claim 3, wherein the screening in the step E is a 20-140-mesh screen.
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| CN113999993B (en) * | 2021-09-30 | 2023-08-29 | 钢研晟华科技股份有限公司 | Method for recycling anode and cathode mixed powder of waste ternary lithium ion battery |
| CN114006067B (en) * | 2021-09-30 | 2024-02-02 | 钢研晟华科技股份有限公司 | Method and system for recycling anode and cathode mixed powder of waste ternary lithium ion battery |
| CN114014384B (en) * | 2021-12-22 | 2024-01-30 | 天齐创锂科技(深圳)有限公司 | Method for preparing ternary precursor material with wide particle size distribution |
| CN114044544B (en) * | 2021-12-22 | 2023-10-27 | 天齐创锂科技(深圳)有限公司 | Method for preparing ternary precursor material with wide particle size distribution by oxidation method |
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| CN110835682A (en) * | 2019-09-26 | 2020-02-25 | 北京矿冶科技集团有限公司 | Method for cooperatively treating positive and negative active materials of waste lithium ion battery |
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| US3672873A (en) * | 1969-03-28 | 1972-06-27 | Int Nickel Co | Separation of nickel from cobalt |
| CN107230811A (en) * | 2016-03-25 | 2017-10-03 | 中国科学院过程工程研究所 | The Selectively leaching agent of metal component and recovery method in a kind of positive electrode |
| CN106129511A (en) * | 2016-06-27 | 2016-11-16 | 北京科技大学 | A kind of method of comprehensively recovering valuable metal from waste and old lithium ion battery material |
| CN110835682A (en) * | 2019-09-26 | 2020-02-25 | 北京矿冶科技集团有限公司 | Method for cooperatively treating positive and negative active materials of waste lithium ion battery |
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