Method for recovering waste secondary battery iron

A secondary battery and recycling method technology, applied in battery recycling, waste collector recycling, recycling technology, etc., can solve the problems of a large amount of impurities, low iron recovery efficiency, poor battery crushing effect, etc., to achieve complete separation and recycling The effect of high efficiency and improved crushing efficiency

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 poor battery crushing effect in the recovery method of waste secondary battery iron in the prior art, resulting in low iron recovery efficiency and containing a large amount of i

Method used

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  • Method for recovering waste secondary battery iron

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Experimental program
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Effect test

Embodiment 1

[0029] A kind of recycling method of waste secondary battery iron, such as figure 1 As shown, it specifically includes the following steps:

[0030] 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;

[0031] 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;

[0032] 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;

[0033] d. Sieve ...

Embodiment 2

[0038] A kind of recycling method of waste secondary battery iron, such as figure 1 As shown, it specifically includes the following steps:

[0039] 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;

[0040] 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;

[0041] 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;

[0042] d. Sieve the p...

Embodiment 3

[0047] A kind of recycling method of waste secondary battery iron, such as figure 1 As shown, it specifically includes the following steps:

[0048] 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;

[0049] 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;

[0050] 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;

[0051] d. Sieve the pul...

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Abstract

The invention relates to a method for recovering a battery, and more particularly relates to a method for recovering waste secondary battery iron. The technical problem to be solved by the invention is to provide a method for recovering the waste secondary battery ion, with high recovery efficiency, and few impurities. The final product iron is obtained by discharging, roasting, crushing, smashing, sieving, shaking separation, magnetic separation and other methods, thereby recovering and utilizing iron. Compared with the prior art, the secondary crushing is carried out, so that the crushing efficiency of the waste secondary battery is greatly improved, the crushed particles are more uniform, and the substances are separated more thoroughly by the following smashing, and thus the impurities of the product iron are few; meanwhile, the substances are separated more thoroughly by secondary crushing and following smashing, so that the magnetic separation can be directly carried out, and the recovery efficiency is high; the impurities are few, so that the iron can also be used for reprocessing, without a follow-up clean-up process, thus greatly simplifying the processing flow.

Description

technical field [0001] The invention relates to a battery recycling method, in particular to a recycling method for waste secondary battery iron. 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 iron shell can be recycled after crushing and other treatments. Subdivided for different treatment and application, in most cases, the iron will be recycled for production and reuse, and the reuse of this...

Claims

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Application Information

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IPC IPC(8): H01M10/54C22B7/00
CPCC22B7/00H01M10/54Y02P10/20Y02W30/84
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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