Process for reversely recycling and preparing lithium nickel manganese oxide by taking waste lithium battery as raw material

A waste lithium battery, lithium nickel manganese oxide technology, applied in battery recycling, waste collector recycling, battery electrodes, etc., can solve the problems of unenvironmental protection, large separation potential, increase wastewater treatment costs, etc., to save costs, reduce Dealing with costs and realizing the effect of resource utilization

Active Publication Date: 2013-07-10
GUANGDONG BRUNP RECYCLING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of feeding materials is relatively high. If ammonia water is used as a precipitant, ammonia nitrogen wastewater will be generated, which is not environmentally friendly, but also increases the cost of wastewater treatment
[0005] Electrodeposition is currently a method for recovering elemental metals. However, due to the large distance between the precipitation potentials of nickel and manganese, it is easy to separate nick...

Method used

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  • Process for reversely recycling and preparing lithium nickel manganese oxide by taking waste lithium battery as raw material
  • Process for reversely recycling and preparing lithium nickel manganese oxide by taking waste lithium battery as raw material
  • Process for reversely recycling and preparing lithium nickel manganese oxide by taking waste lithium battery as raw material

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Experimental program
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Effect test

Embodiment 1

[0034] (1) The battery cell was disassembled, and the positive electrode sheet was taken out; the positive electrode sheet was pulverized, pyrolyzed, and sieved with a 60-mesh standard sieve under vibration to obtain 1846 g of positive electrode powder.

[0035] (2) Dissolve the positive electrode powder in 10L of nitric acid, remove the insoluble matter by filtration, control the pH of the filtrate to 2, add 20L of extractant, and the component of the extractant is P with a volume fraction of 30%. 2 0 4 And the sulfonated kerosene whose volume fraction is 70%, the equilibrium time is 15min, then back extraction with 10L 2mol / L nitric acid, the equilibrium time is 15min, the obtained solution is a mixed solution of nickel nitrate and manganese nitrate, and the nickel ion concentration in the solution is measured is 0.60mol / L, and the manganese ion concentration is 0.63mol / L.

[0036] (3) Add 54.84g of nickel nitrate to the mixed solution in step (2), so that the concentration...

Embodiment 2

[0042](1) Disassemble the battery cell and take out the positive electrode sheet; crush the positive electrode sheet, pyrolyze it, and sieve it with a 60-mesh standard sieve under vibration to obtain 1950 g of positive electrode powder.

[0043] (2) Dissolve the positive electrode powder in 10L of hydrochloric acid, remove the insoluble matter by filtration, control the pH of the filtrate to 2, add 20L of extractant, the components of the extractant are P204 with a volume fraction of 30% and sulfonated with a volume fraction of 70%. Kerosene, the equilibrium time is 20min, back extraction with 10L 2mol / L hydrochloric acid, the equilibrium time is 20min, the obtained solution is a mixed solution of nickel chloride and manganese chloride, and the nickel ion concentration in the solution is 1.25mol / L, manganese The ion concentration is 2.2mol / L.

[0044] (3) Add 390g of manganese chloride to the mixed solution in step (2), so that the concentration ratio of nickel ions to mangane...

Embodiment 3

[0050] (1) The battery cell was disassembled, and the positive electrode sheet was taken out; the positive electrode sheet was crushed, pyrolyzed, and sieved with a 60-mesh standard sieve under vibration to obtain 1872 g of positive electrode powder.

[0051] (2) Dissolve the positive electrode powder in 10L of sulfuric acid, remove the insoluble matter by filtration, control the pH of the filtrate to 3, add 20L of extractant, the components of the extractant are P204 with a volume fraction of 30% and sulfonate with a volume fraction of 70%. Kerosene, the equilibrium time is 30min, back extraction with 10L 2mol / L sulfuric acid, the equilibrium time is 30min, the obtained solution is a mixed solution of nickel sulfate and manganese sulfate, the nickel ion concentration in the solution is 1.2mol / L, and the manganese ion concentration is 1.2mol / L. 1mol / L.

[0052] (3) Add 1240g of nickel sulfate to the mixed solution in step (2), so that the concentration ratio of nickel ions to ...

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Abstract

The invention discloses a process for reversely recycling and preparing lithium nickel manganese oxide by taking waste lithium batteries as raw materials. The process is characterized by comprising the following steps of: (1) preprocessing a positive battery plate of a waste lithium battery to obtain anode power; (2) dissolving the anode power in inorganic acid, and eliminating impurities to obtain mixed acid liquor containing nickel and manganese; (3) adding a nickel source or a manganese source into the mixed solution; (4) adding an acetate complexing agent, and regulating the ratio of the acetate concentration to the total metal ion concentration; (5) putting the mixed solution into an electrolytic bath to be electrolyzed, and depositing nickel manganese oxide on a titanium plate; (6) stopping the conduction of a direct current, taking the titanium plate out, separating the nickel manganese oxide on the titanium plate, and drying the nickel manganese oxide to obtain nickel manganese oxide powder; (7) and uniformly mixing the nickel manganese oxide powder and a lithium source, and then calcining the mixture to obtain lithium nickel manganese oxide. According to the process, a regenerated product having the performance the same with the performance of the original product can be obtained by the waste battery through a reverse recycling process, so that the resource utilization can be realized.

Description

technical field [0001] The invention relates to a process for preparing lithium nickel manganese oxide, in particular to a process for preparing lithium nickel manganese oxide by reverse recycling waste lithium batteries as raw materials. Background technique [0002] With the continuous development of the digital product industry, people's demand for batteries is increasing. Lithium nickel manganese oxide is an important cathode material for lithium batteries. It is widely produced and used, and has a large market demand. While lithium batteries are booming, it can be predicted that in the near future, when the battery life ends, it will enter the scrapping stage. Based on the current quantity of lithium batteries, it can be estimated that the amount of scrapping is equally huge. [0003] The positive electrode material of waste lithium batteries is lithium nickel manganese oxide, etc., which can be recycled and used to make metal powder, metal oxide, chemical salt, etc. ...

Claims

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Application Information

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IPC IPC(8): H01M4/48H01M10/54
CPCY02E60/10Y02W30/84
Inventor 欧彦楠李长东余海军
Owner GUANGDONG BRUNP RECYCLING TECH
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