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Method for recycling waste lithium batteries

A waste lithium battery, recycling technology, applied in the direction of battery recycling, waste collector recycling, plastic recycling, etc., can solve the problems of unfavorable waste lithium battery recycling, insufficient recycling, low recovery rate, etc., so as to prevent secondary pollution , sufficient recycling and high recovery rate

Pending Publication Date: 2021-04-30
天津华庆百胜能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current recovery and treatment methods for waste lithium batteries generally have the problem that the recovery rate is not high enough, which is prone to secondary pollution, and the recovery treatment is not sufficient, which is not conducive to the recovery of waste lithium batteries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A kind of recovery processing method of waste lithium battery, its step is:

[0063] (1) Pretreatment

[0064] Carry out discharge pretreatment on waste lithium batteries, and put them into a clear water pool for cleaning and draining after discharge;

[0065] (2) primary crushing

[0066] The waste lithium battery pretreated in step (1) is transported to the shredder for shredding, and at the same time, the dust is removed by the bag filter, and the waste lithium battery is torn into pieces with a size of 100 mm in length and 50 mm in width;

[0067] (3) secondary crushing

[0068] The fragmented waste lithium batteries after the primary crushing in step (2) are transported to the secondary crusher for crushing through the heating conveyor. The secondary crusher is a double-roll crusher, and at the same time, the bag filter is used for dust removal After crushing, the crushed material with a particle size of 1mm is obtained, and the crushed material includes the outer...

Embodiment 2

[0084] A kind of recovery processing method of waste lithium battery, its step is:

[0085] (1) Pretreatment

[0086] Carry out discharge pretreatment on waste lithium batteries, and put them into a clear water pool for cleaning and draining after discharge;

[0087] (2) primary crushing

[0088] The waste lithium battery pretreated in step (1) is transported to the shredder for shredding, and at the same time, the dust is removed by the bag filter, and the waste lithium battery is torn into pieces with a size of 600 mm in length and 100 mm in width;

[0089] (3) secondary crushing

[0090] The fragmented waste lithium batteries after the primary crushing in step (2) are transported to the secondary crusher for crushing through the heating conveyor. The secondary crusher is a double-roll crusher, and at the same time, the bag filter is used for dust removal After crushing, the crushed material with a particle size of 25mm is obtained, and the crushed material includes the o...

Embodiment 3

[0106] A kind of recovery processing method of waste lithium battery, its step is:

[0107] (1) Pretreatment

[0108] Carry out discharge pretreatment on waste lithium batteries, and put them into a clear water pool for cleaning and draining after discharge;

[0109] (2) primary crushing

[0110] The waste lithium battery pretreated in step (1) is transported to the shredder for shredding, and at the same time, the dust is removed by the bag filter, and the waste lithium battery is torn into pieces with a size of 400 mm in length and 80 mm in width;

[0111] (3) secondary crushing

[0112] The fragmented waste lithium batteries after the primary crushing in step (2) are transported to the secondary crusher for crushing through the heating conveyor. The secondary crusher is a double-roll crusher, and at the same time, the bag filter is used for dust removal After crushing, the crushed materials with a particle size range of 15mm are obtained. The crushed materials include th...

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PUM

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Abstract

The invention provides a method for recycling waste lithium batteries. The method comprises the following steps: pretreatment; primary crushing; secondary crushing; iron removing; separating by specific gravity; separating by plastic diaphragms; tertiary crushing; separating of copper powder and aluminum powder by airflow; dust removal treatment of the collected materials; and packaging and warehousing. Compared with the prior art, dry crushing and sorting are adopted, so that the waste lithium batteries are regenerated into recyclable metal products and nonmetal products, and primary crushing, secondary crushing and tertiary crushing are adopted for crushing treatment respectively, so that corresponding components in the waste lithium batteries are convenient to recover, the recovery rate is high, and secondary pollution is not easy to generate. By adopting iron removal treatment, separation of waste plastics by specific gravity, separation by plastic diaphragms and separation of copper powder and aluminum powder by airflow, and dust removal treatment of the collected materials, the recovery treatment is sufficient, and the recovery of the waste lithium batteries is facilitated.

Description

technical field [0001] The invention relates to the technical field of recycling and processing of lithium batteries, in particular to a method for recycling and processing waste lithium batteries. Background technique [0002] Discarded lithium batteries contain a large amount of non-renewable heavy metal resources with high economic value. The positive electrode materials in lithium batteries contain a large amount of metal materials such as copper and aluminum, and the negative electrode materials contain a large amount of carbon powder. If they can be effectively recycled and disposed of Or unqualified lithium batteries can not only reduce the pressure of waste batteries on the environment, but also avoid the waste of heavy metal resources such as copper and aluminum. However, the current recovery and treatment methods for waste lithium batteries generally have the problem that the recovery rate is not high enough, which is prone to secondary pollution, and the recovery ...

Claims

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Application Information

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IPC IPC(8): B09B3/00B09B5/00C22B7/00C22B15/00C22B21/00B29B17/02H01M10/54
CPCB09B3/00B09B5/00C22B7/005C22B15/00C22B21/0007B29B17/02H01M10/54B09B3/80Y02W30/52Y02W30/62Y02W30/84Y02P10/20
Inventor 吴进波
Owner 天津华庆百胜能源有限公司
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