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Method for recycling copper aluminum and rubber in waste power lithium battery

A lithium battery, copper-aluminum technology, applied in the field of lithium battery recycling, can solve the problems of reduced product sales value, large mutual inclusion of copper and aluminum products, and reduced product purity, so as to achieve high sales economic income and low mutual inclusion of copper and aluminum products , the effect of high product purity

Active Publication Date: 2019-02-22
CHANGSHA RES INST OF MINING & METALLURGY
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Problems solved by technology

For waste power lithium batteries, the copper foil and aluminum foil in the positive and negative electrodes and the rubber particles used for packaging are currently sorted by air separation and electric separation after crushing. The disadvantage of this sorting method is that Copper-aluminum products contain a lot of each other, the purity of the product is reduced, and the sales value of the product is also reduced

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  • Method for recycling copper aluminum and rubber in waste power lithium battery

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Embodiment Construction

[0019] In order to facilitate the understanding of the present invention, the present invention will be described more fully and in detail below in conjunction with the accompanying drawings and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments.

[0020] as attached figure 1 As shown, a method for recycling copper, aluminum and rubber in waste power lithium batteries comprises the following steps:

[0021] 1) Dismantling: 200kg of waste power battery packs are discharged and disassembled to obtain 150kg of battery cells;

[0022] 2) Crushing and granulation: 150kg of battery cells are crushed in one stage, and the dust removal equipment connected to the crushing equipment absorbs and collects plastic separators and fine-grained battery powders with light density, and then sieves them to obtain plastic separator products and battery powder products ;

[0023] 3) Screening: The first-stage crushed heav...

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Abstract

The invention discloses a method for recycling copper aluminum and rubber in a waste power lithium battery. The method is characterized by comprising the following steps of 1) disassembly: disassembling a waste power battery pack to obtain a battery unit; 2) crushing and granulation: conducting one-stage crushing and two-stage granulation through an ultra-fine grinding granulator on the battery unit to obtain a product A; 3) screening: screening the product A through a screening device to obtain 100-160-mesh anode and cathode powder under the screening device and a 100-160-mesh product B on the screening device; 4) magnetite induced gravity separation: conducting the magnetite induced gravity separation on the product B first to obtain pure rubber particles and a copper-aluminum mixture and conducting the second magnetite induced gravity separation on the copper-aluminum mixture to obtain pure copper particles and aluminum particles. The ultra-fine high-purity magnetite induced gravityseparation technology is adopted to better recycle the copper-aluminum and the rubber in the waste power lithium battery, and the obtained copper and aluminum and the rubber have low mutual content.

Description

technical field [0001] The invention relates to a method for recycling lithium batteries, in particular to a method for recycling copper, aluminum and rubber in waste power lithium batteries. Background technique [0002] In recent years, with the guidance of domestic policies on new energy vehicles, the sales volume of new energy vehicles in my country has been greatly improved. In 2017, the cumulative total sales of new energy vehicles in my country reached 777,000 units, a year-on-year increase of 53%. Among them, the cumulative annual sales volume of pure electric vehicles was 652,000, and that of plug-in hybrid vehicles was 125,000. Domestic sales of new energy vehicles are expected to exceed 2 million units in 2020, and the year-on-year growth rate of future sales will exceed 40%. At present, my country's new energy vehicles mostly use ternary lithium batteries, lithium iron phosphate, etc. as power batteries. Due to cyclic charging and discharging, their battery capa...

Claims

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Application Information

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IPC IPC(8): H01M10/54H01M10/052B03B7/00
CPCB03B7/00H01M10/052H01M10/54Y02E60/10Y02W30/84
Inventor 杨柳毅万洪强王奉刚
Owner CHANGSHA RES INST OF MINING & METALLURGY
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