Wet separation technology for waste lithium batteries and application thereof

A waste lithium battery, sorting technology, applied in the direction of battery recycling, solid separation, recycling technology, etc., can solve the problems of resource waste, deterioration, unusable, etc., and achieve the effect of low cost

Active Publication Date: 2021-05-07
HUNAN BRUNP RECYCLING TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the battery deteriorates after a period of cycle, causing the battery to fail and cannot continue to be used, and the discharge of chemical reagents in it to the environment will bring great harm to the environment and cause a waste of resources.

Method used

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  • Wet separation technology for waste lithium batteries and application thereof
  • Wet separation technology for waste lithium batteries and application thereof
  • Wet separation technology for waste lithium batteries and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A wet sorting process for waste lithium batteries, comprising the following steps:

[0043] (1) Perform a stage of wet ball milling under the condition that the ball milling concentration is 60% and the steel ball filling rate is 40% for 1 ton of waste and old ternary square shell lithium battery sorting raw materials to obtain a ball milling product;

[0044] (2) Put the ball mill product into vibrating sieves with mesh sizes of 2mm and 0.15mm respectively for sieving to obtain coarse-grained grades (coarse-grained grade products are returned to the first stage of ball mill feeding), medium-grained grades and fine-grained grades Grade three screened materials;

[0045] (3) The sieved material of the medium particle size is added with water to adjust the concentration to 50%, and the passing condition is that the steel ball filling rate is 45%, and the sieve size is the second stage wet ball milling-sieving of 0.15mm, and the obtained 0.15 Add appropriate amount of wat...

Embodiment 2

[0051] A waste lithium battery wet separation process, comprising the following steps:

[0052] (1) 1 ton of waste lithium cobaltate soft-pack battery sorting raw materials is subjected to a stage of wet ball milling under the conditions that the ball milling concentration is 55% and the steel ball filling rate is 35%, to obtain a ball milling product;

[0053] (2) Put the ball mill product into vibrating sieves with mesh sizes of 2mm and 0.15mm respectively for sieving to obtain coarse-grained grades (coarse-grained grade products are returned to the first stage of ball mill feeding), medium-grained grades and fine-grained grades Grade three screened materials;

[0054] (3) Add appropriate amount of water to the medium-sized product to adjust the concentration to 52%, and pass the second-stage wet ball milling-sieving with a steel ball filling rate of 40% and a sieve size of 0.15mm to obtain a 0.15-2mm The material is added with an appropriate amount of water to adjust the c...

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Abstract

The invention belongs to the field of battery material recovery, and discloses a wet separation technology for waste lithium batteries and application of the wet separation technology. The wet separation technology comprises the following steps of carrying out wet ball milling on separation raw materials of the waste lithium batteries to obtain a ball-milled product; screening the ball-milled product to obtain coarse-grained screened materials, medium-grained screened materials and fine-grained screened materials; carrying out wet ball milling, screening, magnetic separation and table concentration on the medium-grained screened materials to obtain copper, aluminum and steel shells; and carrying out flotation, magnetic separation and table concentration on the fine-grained screened materials to obtain positive electrode material powder, graphite, copper and aluminum. According to the wet separation technology, the gravity, magnetism and flotation combined treatment is adopted, the recovery rate of the steel shells is 99%, the recovery rate of the graphite is 90% to 92%, the recovery rate of cobalt in the positive electrode material powder is 99% or above, the recovery rate of nickel is 99% or above, the recovery rate of manganese is 99% or above, the recovery rate of the copper is 93% to 95%, and the recovery rate of the aluminum is 93% to 95%.

Description

technical field [0001] The invention belongs to the field of battery material recycling, and in particular relates to a wet sorting process of waste lithium batteries and its application. Background technique [0002] Lithium-ion batteries are widely used in military, aviation, mobile electronic terminals, electronic appliances, medical, industrial and other fields due to their advantages of large energy storage capacity, long service life, recyclability, good safety performance, and high working pressure. In recent years, with the continuous development of new energy vehicles, the annual demand and usage of lithium batteries have increased steeply year by year. However, the battery deteriorates after a period of cycle, causing the battery to fail and cannot continue to be used, and the discharge of chemical reagents therein to the environment will bring great harm to the environment, and will also cause a waste of resources. For this reason, lithium batteries can be recycl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00B03B1/00H01M10/54
CPCB03B9/00B03B1/00H01M10/54Y02W30/84H01M6/52B03B2009/066B03B7/00
Inventor 赵捷明巩勤学陈若葵李强李长东
Owner HUNAN BRUNP RECYCLING TECH
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