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Method for recovering valuable metal from nickel cobalt lithium manganate batteries and positive pole materials

A technology of nickel cobalt lithium manganate and valuable metals, applied in the field of waste power battery recycling, can solve problems such as inconsistent proportions, and achieve the effects of low cost, simple process and environmental friendliness

Active Publication Date: 2012-09-19
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to solve the inconsistent ratio of nickel, cobalt and manganese in the waste nickel-cobalt lithium manganate battery existing in the existing method for recovering valuable metals from the waste nickel-cobalt lithium manganate battery, and it is necessary to add corresponding To solve the problem of adjusting the content of the above metals to the required ratio, a direct recovery of nickel-cobalt-manganese composite carbonate without adjusting the ratio of nickel, cobalt and manganese is proposed, and the process is simple, environmentally friendly, low cost and high recovery rate recycling method

Method used

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  • Method for recovering valuable metal from nickel cobalt lithium manganate batteries and positive pole materials
  • Method for recovering valuable metal from nickel cobalt lithium manganate batteries and positive pole materials
  • Method for recovering valuable metal from nickel cobalt lithium manganate batteries and positive pole materials

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Embodiment 1

[0043] This embodiment provides a method for recovering valuable metals from waste nickel-cobalt lithium manganese oxide batteries, which includes the following steps:

[0044] S1: Sorting waste nickel-cobalt lithium manganese oxide batteries, and using waste nickel-cobalt lithium manganese oxide batteries containing nickel, cobalt, and manganese in a mass ratio of 1:1:1 as recycling materials.

[0045] S2: Discharge the above-mentioned recycled raw materials and remove the outer packaging and shell of the battery with the help of a shearing machine, take out the battery cell, and crush the battery cell until the area of ​​the cell fragment is less than or equal to 5cm 2 .

[0046] S3: Soak the cell fragments in N,N-dimethylformamide, wherein the solid-liquid ratio of the cell fragments to N,N-dimethylformamide is 20g / L, and at the same time, treat with mechanical stirring and ultrasonic oscillation for 2 hours , to obtain a solid-liquid mixture.

[0047] S4: Filtrate the so...

Embodiment 2

[0062] This embodiment provides a method for recovering valuable metals from waste nickel-cobalt lithium manganese oxide batteries, which includes the following steps:

[0063] S1: Sorting waste nickel-cobalt lithium manganese oxide batteries, and using waste nickel-cobalt lithium manganese oxide batteries containing nickel, cobalt, and manganese in a mass ratio of 2:1:2 as recycling materials.

[0064] S2: Discharge the above-mentioned recycled raw materials and remove the outer packaging and casing of the battery with the help of a shear, take out the battery cell, and crush the battery cell until the area of ​​the cell fragment is less than or equal to 4cm 2 .

[0065] S3: Soak the cell fragments in N-methylpyrrolidone, wherein the solid-to-liquid ratio of the cell fragments to N-methylpyrrolidone is 60 g / L, while mechanically stirring and ultrasonically oscillating for 0.5 h to obtain a solid-liquid mixture.

[0066] S4: Filtrate the solid-liquid mixture obtained in step ...

Embodiment 3

[0076] This embodiment provides a method for recovering valuable metals from waste nickel-cobalt lithium manganese oxide batteries, which includes the following steps:

[0077] S1: Sorting waste nickel-cobalt lithium-manganese oxide batteries, and using waste nickel-cobalt lithium-manganese oxide batteries containing nickel, cobalt, and manganese in a mass ratio of 5:2:3 as recycling materials.

[0078] S2: Discharge the above-mentioned recycled raw materials and remove the outer packaging and casing of the battery with the help of a shearing machine, take out the battery cell, and crush the battery cell until the area of ​​the cell fragment is less than or equal to 3cm 2 .

[0079] S3: Soak the cell fragments in a mixture of N,N-dimethylformamide and N-methylpyrrolidone with a mass ratio of 1:1, wherein the solid-liquid ratio of the cell fragments to the mixture is 100g / L , and simultaneously stirred and ultrasonically oscillated for 3 h to obtain a solid-liquid mixture.

...

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Abstract

The invention provides a method for recovering valuable metal from waste nickel cobalt lithium manganate batteries and positive pole materials made of the valuable metal and belongs to the technical field of waste power battery recovery. The method can solve the problems in the existing recovery method that proportions of nickel, cobalt and manganese in the waste nickel cobalt lithium manganate batteries are different and corresponding metal is required to be added in recovery steps so as to adjust content of nickel, cobalt and manganese to reach required proportions. In the recovering method, by screening the positive pole materials of all nickel cobalt lithium manganate batteries from the waste nickel cobalt lithium manganate batteries and using the positive pole materials as recovery raw materials of the waste nickel cobalt lithium manganate batteries with the same positive pole materials, nickel cobalt manganate composite carbonate capable of being applied to preparation of the positive pole materials of lithium ion batteries directly without adjusting the proportion of nickel, cobalt and manganese is obtain.

Description

technical field [0001] The invention belongs to the technical field of recycling waste power batteries, and in particular relates to a method for recovering valuable metals from waste nickel-cobalt lithium manganese oxide batteries, and a nickel-cobalt lithium manganese oxide cathode material prepared from the valuable metals. Background technique [0002] Lithium-ion batteries have the characteristics of high energy density, light weight, small size, long cycle life, no memory and little pollution. They are widely used in portable electronic devices such as mobile phones, notebook computers and cameras, as well as in automobiles, aerospace and medical equipment. Applications. [0003] With the advancement of science and technology, the manufacturing cost of lithium-ion batteries continues to decrease, the application fields continue to expand, and the consumption is also increasing. Hundreds of millions of lithium-ion batteries are produced every year. Lithium nickel cobal...

Claims

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Application Information

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IPC IPC(8): C22B7/00H01M10/54H01M4/505H01M4/525
CPCY02E60/122Y02E60/10Y02P10/20Y02W30/84
Inventor 刘三兵翟丽娟
Owner CHERY AUTOMOBILE CO LTD
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