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Method for recovering copper and aluminum from waste secondary batteries

A secondary battery and recycling method technology, applied in battery recycling, waste collector recycling, recycling technology, etc., can solve problems such as safety, leakage pollution, hidden dangers, etc.

Inactive Publication Date: 2016-11-09
GANZHOU HIGHPOWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the disadvantages of potential safety hazards in the battery treatment process and easy leakage and pollution in the recycling method of copper and aluminum of waste secondary batteries in the prior art, the technical problem to be solved by the invention is to provide a battery treatment process to eliminate potential safety hazards , the recycling method of copper and aluminum in waste secondary batteries that will not produce leakage pollution

Method used

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  • Method for recovering copper and aluminum from waste secondary batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A kind of recovery method of waste secondary battery copper and aluminum, such as figure 1 As shown, it specifically includes the following steps:

[0031] a. Put the waste Ni-MH battery into the tank filled with electrolyte, so that the residual power in the waste Ni-MH battery is fully discharged;

[0032] b. Evenly send the discharged waste nickel-hydrogen batteries into the combustion chamber of the rotary kiln for roasting, the roasting temperature is 700°C, and the roasting time is 2.5 hours, and the easily decomposed organic solvents and electrolytes in the waste nickel-hydrogen batteries are heated, decomposed and released;

[0033] c. Preliminarily cut the roasted waste Ni-MH batteries with a vertical crusher, cut the waste Ni-MH batteries, and then use a double-shaft shredder for in-depth impact treatment to completely tear the waste Ni-MH batteries crushed, and then crushed with an energy-saving ball mill to crush and separate the different substances;

[0...

Embodiment 2

[0039] A kind of recovery method of waste secondary battery copper and aluminum, such as figure 1 As shown, it specifically includes the following steps:

[0040]a. Put the waste lithium battery into the tank filled with electrolyte, so that the residual power in the waste lithium battery is fully discharged;

[0041] b. Evenly send the discharged waste lithium batteries into the combustion chamber of the rotary kiln for roasting, the roasting temperature is 900°C, and the roasting time is 1.5 hours, and the easily decomposed organic solvents and electrolytes in the waste lithium batteries are decomposed and released by heating;

[0042] c. Preliminarily cut the roasted waste lithium battery with a vertical crusher, cut the waste lithium battery, and then use a double-shaft shredder for in-depth impact treatment to completely shred the waste lithium battery, and then , and then crushed with an energy-saving ball mill to crush and separate the different substances;

[0043] d...

Embodiment 3

[0048] A kind of recovery method of waste secondary battery copper and aluminum, such as figure 1 As shown, it specifically includes the following steps:

[0049] a. Put the waste lithium battery into the tank filled with electrolyte, so that the residual power in the waste lithium battery is fully discharged;

[0050] b. Evenly send the discharged waste lithium batteries into the combustion chamber of the rotary kiln for roasting, the roasting temperature is 800°C, and the roasting time is 2 hours, and the easily decomposed organic solvents and electrolytes in the waste lithium batteries are decomposed and released by heating;

[0051] c. Preliminarily cut the roasted waste lithium battery with a vertical crusher, cut the waste lithium battery, and then use a double-shaft shredder for in-depth impact treatment to completely shred the waste lithium battery, and then , and then crushed with an energy-saving ball mill to crush and separate the different substances;

[0052] d....

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Abstract

The invention relates to a battery recovery method, in particular to a method for recovering copper and aluminum from waste secondary batteries, and aims to eliminate potential safety hazards and avoid leakage pollution in a battery treatment process by providing the method for recovering copper and aluminum from the waste secondary batteries. The method comprises is used for obtaining end products, namely copper and aluminum, in such manners as electric discharging, calcination, crushing, smashing, sieving, shaking separation and magnetic separation, so that the recovery and the utilization of copper and aluminum are realized. Compared with the prior art, the method provided by the invention has the advantages that due to the treatment process of crushing after calcination, that is, easy-to-decompose organic solvents and electrolyte solutions in the waste secondary batteries are decomposed and released through heating and calcination, and then crushing is carried out, so that leakage of organic matters and the electrolyte solutions can be avoided in the follow-up crushing process, treatment safety of follow-up procedures is guaranteed; according to the treatment process provided by the invention, not only is treatment safety realized, but also leakage of harmful substances is prevented, so that the effect of environmental protection is realized.

Description

technical field [0001] The invention relates to a method for recycling batteries, in particular to a method for recycling copper and aluminum of waste secondary batteries. Background technique [0002] Due to its high energy density, light weight, long life and other excellent characteristics, secondary batteries are widely used in communication tools such as mobile phones, notebook computers, digital cameras, digital electronic products, electric tools, electric vehicles and other fields. my country has become the world's largest Secondary battery production and consumption countries. [0003] In waste secondary batteries, the positive electrode material is positive electrode powder and aluminum foil, the negative electrode material is carbon powder and copper foil, and the shell is iron shell; the copper foil and aluminum foil can be completely recycled, and scrap copper is an important part of the copper industry. The source of raw materials, nearly 40% of the current cop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54
CPCY02W30/84H01M10/54
Inventor 区汉成孟笑谢丰海杨勇黄心荣魏长寿魏银伟
Owner GANZHOU HIGHPOWER TECH CO LTD
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