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Method for recovering metal elements from waste and old ternary lithium-ion battery

A technology for power batteries and metal elements, applied in the field of metal element recovery, can solve the problems of complex treatment process, unfavorable safety production, etc., and achieve the effects of improving the dissolution rate, being beneficial to industrialized recovery, and reducing energy consumption.

Active Publication Date: 2018-07-13
ZHEJIANG FOREVER NEW ENERGY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The processing process is too complicated and requires high temperature treatment, which is not conducive to safe production. At the same time, it can only recover lithium ions in ternary lithium batteries, and cannot recover metal elements such as cobalt, nickel and manganese more completely.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Select the scrapped ternary lithium-ion power battery and disassemble (sort and sort), collect the positive electrode material fragments mainly composed of positive electrode raw materials for further crushing, and obtain the corresponding positive electrode material powder;

[0028] Put the positive electrode material powder obtained above into the mixed aqueous solution of biological organic acid and bioflavonoid, where the biological organic acid is citrate, and the bioflavonoid is quercetin, so that the content of organic acid is 50g / L, and citrate The mass ratio of rafter acid to quercetin is 50:60. Then, heat up to reflux pretreatment for 30 minutes. During the reflux treatment, low-frequency ultrasonic treatment is used with a frequency of 60KHz. Filter while hot to remove particulate matter such as collectors and filter residues. , collect the obtained filtrate, then continue to reflux the above-mentioned collected filtrate for 30min, then carry out selective pre...

Embodiment 2

[0032] Select the scrapped ternary lithium-ion power battery and disassemble (sort and sort), collect the positive electrode material fragments mainly composed of positive electrode raw materials for further crushing, and obtain the corresponding positive electrode material powder;

[0033] Put the positive electrode material powder obtained into the mixed aqueous solution of bioorganic acid and bioflavonoid, where the bioorganic acid is kojic acid, and the bioflavonoid is nobiletin, so that the content of organic acid is 100g / L, and kojic acid and The mass ratio of nobiletin is 1:2. Then, heat up to 70°C for pre-ultrasonic treatment for 30 minutes. Specifically, low-frequency ultrasonic treatment is used at a frequency of 70KHz. Filter while hot to remove particulate matter such as current collectors, filter residues, and collect. The filtrate, then, continue to reflux the filtrate for 30min, then carry out selective precipitation treatment to the filtrate collected, specifica...

Embodiment 3

[0037] Select the scrapped ternary lithium-ion power battery and disassemble (sort and sort), collect the positive electrode material fragments mainly composed of positive electrode raw materials for further crushing, and obtain the corresponding positive electrode material powder;

[0038] Put the obtained positive electrode material powder into the mixed aqueous solution of biological organic acid and bioflavonoid, where the biological organic acid is gibberellic acid, and the bioflavonoid is rutin, so that the content of organic acid is 80g / L, and gibberellic acid The mass ratio to rutin is 200g / L, and then, heat up to reflux state for pre-ultrasonic treatment for 40min, specifically adopt low-frequency ultrasonic treatment, the frequency is 40KHz, filter while hot to remove particulate matter such as current collector, remove filter residue, collect The filtrate obtained, then, continue to reflux the filtrate for 40min, and then carry out selective precipitation treatment t...

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PUM

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Abstract

The invention relates to a method for recovering metal elements from a waste and old ternary lithium-ion battery, belongs to the technical field of recovery of waste and old batteries, and aims at solving the problem that the conventional method is low in recovery rate of metal elements. The method comprises the following steps: disassembling the waste and old ternary lithium-ion battery, and collecting the powder of positive electrode materials of the battery; preprocessing the powder of the positive electrode materials with a mixed solution containing biogenic organic acid and bioflavonoid;filtering, and collecting the filtrate; selectively depositing the collected filtrate; recovering at least one metal element. According to the method, the adhesive component in the positive electrodematerial can be effectively removed and decomposed, so that the metal elements can be effectively separated and dissolved out, thus the dissolving rate is effectively increased, and the subsequent recovery effect of the metal elements can be ensured.

Description

technical field [0001] The invention relates to a method for recovering metal elements in waste ternary lithium-ion power batteries, and belongs to the technical field of waste battery recovery. Background technique [0002] The positive electrode materials of lithium-ion batteries mainly include lithium cobalt oxide, lithium manganese oxide, and ternary materials. Due to the excellent performance of ternary materials, it has been widely promoted in the field of battery applications. Ternary lithium-ion power battery refers to the use of nickel-cobalt lithium manganese oxide (Li(NiCoMn)O 2 ) Lithium batteries with ternary positive electrode materials, especially in recent years, with the continuous development of electric vehicles, ternary lithium-ion power batteries have been widely used in the automotive field. [0003] However, since the service life of general lithium-ion batteries can only reach 1-3 years, and with the vigorous development of electric vehicles, waste ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54
CPCH01M10/54Y02W30/84
Inventor 鲍添增赵欣宁
Owner ZHEJIANG FOREVER NEW ENERGY TECH CO LTD
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