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Lithium ion battery recycling method

A lithium-ion battery, recycling technology, applied in battery recycling, secondary battery, recycling technology, etc., can solve the problems of toxic substances, air pollution, polluted environment, etc., and achieve the effect of shortening the battery discharge time

Active Publication Date: 2020-12-18
江西省中子能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a lithium-ion battery recovery treatment method, which is mainly used to solve the problem of air pollution in the treatment of waste lithium-ion batteries by the fire method, and to solve the problem of toxic substances and environmental pollution caused by the treatment of waste lithium-ion batteries by the water method The problem

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  • Lithium ion battery recycling method

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Effect test

Embodiment 1

[0018] A kind of lithium ion battery recovery treatment method of the present embodiment,

[0019] Including the following steps:

[0020] 1) Cut the drain port: flush one end of the waste battery, and use a cutting machine to cut off the flat end of the battery by 0.5cm in a nitrogen environment, so that the waste battery exposes the internal battery cell, and the end of the waste battery is cut out of the drain port;

[0021] 2) Heating and stirring: pour the waste battery with the cut discharge port into the turning furnace, and add solid particles into the turning furnace in advance, the solid particles are a mixture of sand and iron particles, sand particles: iron particles = 2:1, start turning over Furnace, so that waste batteries and solid particles are fully mixed and rubbed against each other, and heated nitrogen is introduced into the turning furnace, and the tail gas discharged from the turning furnace is discharged into the turning furnace again, stirred for 1H, an...

Embodiment 2

[0029] A kind of lithium ion battery recovery treatment method of the present embodiment,

[0030] Including the following steps:

[0031] 1) Cut the drain port: flush one end of the waste battery, and use a cutting machine to cut off the flat end of the battery by 1 cm in a nitrogen environment, so that the waste battery exposes the internal battery cell, and the end of the waste battery is cut out of the drain port;

[0032] 2) Heating and stirring: Pour the waste battery with the cut discharge port into the turning furnace. Solid particles are added to the turning furnace in advance. The solid particles are a mixture of sand particles and iron particles. Sand particles: iron particles = 5:1, start turning over Furnace, so that waste batteries and solid particles are fully mixed and rubbed against each other, and heated nitrogen is introduced into the turning furnace, and the tail gas discharged from the turning furnace is discharged into the turning furnace again, stirred f...

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Abstract

The invention relates to the technical field of waste battery recycling, and provides a lithium ion battery recycling method. The method comprises the following steps: cutting a drainage port: cuttingthe drainage port at one end of the waste battery; heating and stirring: fully mixing and rubbing the waste battery and the solid particles with each other, and introducing heated nitrogen; sieving:filtering and separating waste batteries and solid particles by using a screen; crushing: crushing the waste batteries into crushed slag; stirring: fully mixing the waste battery disintegrating slag with the sieved solid particles, and performing mutual friction; magnetic separation: separating magnetic substances from non-magnetic substances through a magnetic separator; chemical precipitation separation: dissolving the solid powder into alkali liquor, adding sulfuric acid to obtain metal sulfate, and adding sodium carbonate to obtain carbonate precipitate; and washing and drying: washing anddrying the carbonate precipitate. The method has the beneficial effects that the battery discharging time is shortened, namely, the pyrogenic process waste battery recycling efficiency is high, and the wet process waste battery recycling rate is also achieved.

Description

technical field [0001] The invention relates to the technical field of recycling waste batteries, in particular to a method for recycling lithium-ion batteries. Background technique [0002] Lithium-ion batteries are currently the most effective and promising energy storage technology due to their high specific energy and long cycle life. At the same time, lithium-ion batteries are now widely used in the field of new energy electric vehicles. my country is one of the world's largest producers and consumers of lithium-ion batteries. The increase in lithium-ion battery production will inevitably lead to an increase in the amount of lithium-ion battery scrap. The use of waste lithium-ion batteries is fully and rationally utilized for lithium-ion batteries. The cost reduction has important economic value. It can not only reduce the preparation cost and reduce environmental pollution, but also alleviate the situation of decreasing lithium resources, which has important social an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54H01M10/0525
CPCH01M10/54H01M10/0525Y02W30/84Y02E60/10
Inventor 高忠
Owner 江西省中子能源有限公司