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Wet crushing recovery method of waste lithium ion battery

A lithium-ion battery and recycling method technology, applied in the field of power battery recycling and processing, can solve problems such as environmental pollution, and achieve the effects of improving process efficiency and reducing acid consumption

Inactive Publication Date: 2019-06-07
上海毅信环保科技有限公司
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  • Abstract
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Problems solved by technology

However, a large amount of wastewater containing lithium salts and organic matter will be produced in the hydraulic separation process, and if the wastewater is not recycled, it will pollute the environment

Method used

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  • Wet crushing recovery method of waste lithium ion battery

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Embodiment Construction

[0033] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0034] join figure 1 , shown in the figure is a wet crushing recovery method for waste lithium-ion batteries, including the following steps:

[0035] Step S1, dismantling the waste lithium-ion battery into lithium battery cells, and performing discharge treatment on the disassembled lithium battery cells. In this embodiment, a salt water immersion method is used to discharge the disassembled lithium battery cells.

[0036] Step S2, performing multi-stage continuous wet crushing treatment on the discharged lithium battery cells to obtain a water-soluble lithium salt mixture. In this embodiment, the multi-stage continuous wet crushing process is realized by using a continuous multi-stage wet crusher, which includes at least one stage of impact c...

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Abstract

The invention discloses a wet crushing recovery method of a waste lithium ion battery. The method comprises the following steps of 1, disassembling the waste lithium ion battery into a lithium batterymonomer, and carrying out discharging treatment; 2, carrying out multistage continuous wet crushing treatment on the lithium battery monomer; 3, screening the lithium salt mixture; 4, carrying out vibration treatment and centrifugal separation treatment on the screened slurry in sequence; 5, carrying out cleaning treatment on the solid mixture, and on the other hand, detecting the TDS content ofthe water-phase mixture; 6, drying the solid mixture; 7, carrying out sorting treatment on the dried solid mixture by adopting a magnetic separation manner; and 8, carrying out sorting treatment on the residual solid mixture obtained by sorting by adopting a wind separation manner. No waste water is discharged in the whole process, and the waste gas can achieve up-to-standard emission.

Description

technical field [0001] The invention relates to the technical field of power battery recycling and processing, in particular to a wet crushing recycling method for waste lithium ion batteries. Background technique [0002] Lithium-ion batteries have the advantages of high energy, long life, and low pollution, and are widely used in many fields such as computers, electric bicycles, electric vehicles, and national defense. Especially in recent years, with the explosive growth of electric vehicles, the demand and scrapping of lithium-ion batteries have increased significantly. A large number of discarded lithium-ion batteries cause waste of resources and energy and environmental pollution. Waste lithium-ion batteries contain a large number of available resources, such as iron, copper, aluminum and other valuable metals. If these waste lithium-ion batteries are not recycled properly, it will It will cause a great waste of resources and environmental pollution. The positive and...

Claims

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Application Information

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IPC IPC(8): C22B26/12C22B7/00H01M10/54
CPCY02W30/84Y02P10/20
Inventor 赵焱罗坚施沛颖刘一彬杨晓丽
Owner 上海毅信环保科技有限公司
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