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Resource recycling method for waste lithium ion power battery

A lithium-ion battery and power battery technology, which is applied in the recycling of waste collectors, etc., can solve the problems of secondary pollution and low metal recovery rate, and achieve the effect of realizing recycling, improving metal recycling rate, and improving environmental protection indicators

Active Publication Date: 2018-01-23
JIANGXI UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the deficiencies of the prior art, to provide a method to solve the problem of low metal recovery rate and easy secondary pollution in the recycling process of waste lithium-ion power batteries, and to realize efficient and clean recycling of waste lithium-ion power batteries Recycle

Method used

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  • Resource recycling method for waste lithium ion power battery

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Effect test

Embodiment 1

[0041] (1) Discharge pretreatment: First, use a special battery puncher to punch holes in the waste lithium-ion power battery. On average, each battery will punch 3-4 holes, and then soak the battery in salt water for discharge treatment. The discharge time is 4 Hours.

[0042] (2) Dismantling: Use a special waste power battery dismantling device to disassemble the shell and gold-plated waste power battery obtained in step (1), and separate to obtain gold-plated, iron or aluminum shells, and batteries. They are respectively used for the subsequent recovery of gold, iron and aluminum, and the batteries are used for subsequent recycling.

[0043] (3) Incineration: Use a converter to incinerate the cells of the waste lithium-ion power battery. The incineration temperature is controlled at 600°C and the incineration time is maintained for 60 minutes to obtain polymetallic materials and flue gas.

[0044] (4) Pulverization: The polymetallic material obtained in step (3) was pulver...

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Abstract

The invention discloses a resource recycling method for a waste lithium ion power battery. The method comprises the following process steps: carrying out electro discharge treatment, dismantling treatment, incineration treatment, polymetallic material crushing treatment, polymetallic material acid leaching treatment, extracting treatment, sedimentation treatment, flue gas secondary combustion treatment, flue gas rapid cooling treatment, flue gas alkali spraying treatment, flue gas urea spraying treatment, flue gas adsorption treatment and the like on the waste lithium ion power battery. The resource recycling method for the waste lithium ion power battery can fully recycle valuable metals from the waste lithium ion power battery, improve the recovery and utilization rate of metal to the maximum extent, and realize the recycling of metal resources; the flue gas can be directly discharged after being subjected to the process treatments such as the secondary combustion treatment, rapid cooling treatment, alkali spraying treatment, urea spraying treatment and adsorption treatment, the environmental protection index during the process of recycling and utilization of the waste lithium ion power battery is improved, no secondary pollution is generated, cleaner production is realized, and the economic benefits and environmental benefits are significant.

Description

technical field [0001] The invention relates to the field of recycling waste power batteries, in particular to a method for resource recovery of waste lithium-ion power batteries. Background technique [0002] With the rapid development of the new energy vehicle market, the amount of scrapped lithium-ion power batteries will increase significantly. Lithium-ion power batteries are mainly composed of positive electrodes, negative electrodes, separators, and electrolytes. Typical lithium-ion power batteries contain valuable metals such as cobalt, lithium, copper, aluminum, nickel, and iron. Among them, copper, lithium, cobalt, and nickel mainly exist in positive electrode materials, which are extremely valuable for recycling. If the waste lithium-ion power battery is not recycled properly, not only the recovery rate of metal resources is not high, it will cause waste of resources, but also cause environmental pollution. The recycling of waste lithium-ion batteries has become o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54
Inventor 严康徐志峰田磊黄金堤
Owner JIANGXI UNIV OF SCI & TECH
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