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Waste lithium cobalt oxide battery treatment methodand product thereof

A technology of waste lithium cobalt oxide and treatment method, which is applied in the direction of lithium storage battery, battery electrode, battery recycling, etc., can solve the problems of high acid consumption and more secondary waste liquid, etc. The effect of cross-generation upgrade to prepare ternary power lithium battery

Active Publication Date: 2021-10-19
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although hydrometallurgy also has disadvantages such as high acid consumption and secondary waste liquid, etc.

Method used

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  • Waste lithium cobalt oxide battery treatment methodand product thereof
  • Waste lithium cobalt oxide battery treatment methodand product thereof
  • Waste lithium cobalt oxide battery treatment methodand product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0113] like figure 1 As shown, a method for in-situ upgrading of waste lithium cobaltate batteries to nickel-cobalt-aluminum ternary lithium batteries comprises the following steps:

[0114] (1) In order to ensure the safety of the experimental process, 100 waste lithium cobaltate mobile phone lithium batteries of about 2.5kg were fully discharged in 5% NaCl-KCl salt solution for 48 hours, and then dried in the fume hood for 48 hours;

[0115] (2) The massive waste lithium battery after discharge has been coarsely crushed by a shear crusher and finely crushed by a universal crusher to obtain fully dissociated crushed products;

[0116] (3) The crushed product falls into the circular hole vibrating screen for sieving and separation;

[0117] (4) The material on the circular vibrating screen is first sorted by pulsating air flow, and the light product diaphragm and plastic products are blown out from the upper vent and collected as plastic products, and the metal flakes or meta...

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Abstract

The invention discloses a waste lithium cobalt oxide battery treatment method and a product thereof, which belong to the technical field of waste battery treatment. The method comprises the following steps of fully discharging the waste lithium cobalt oxide battery to obtain the discharged waste lithium cobalt oxide battery, crushing the waste lithium cobalt oxide battery to obtain a crushed product of the waste lithium cobalt oxide battery, screening crushing products of the waste lithium cobalt oxide batteries, and acquiring oversize products and undersize products, separating the oversize product to obtain a diaphragm product, a plastic product, an iron product, a copper foil product and an aluminum foil product, mechanically activating the undersize product to obtain an activated product, enabling the activated product to be subjected to acid leaching through degradable organic acid, and acquiring a mixture containing the activated product and organic acid leaching liquid, and filtering the mixture containing the activated product and the organic acid leachate, wherein the obtained filter residue is graphite. After further treatment, a copper sludge product and LiNi0.85Co0.1Al0.05O2 can also be obtained. According to the method, recoverable resources in the waste lithium cobalt oxide battery can be effectively recovered, and heavy metal pollution can be reduced.

Description

technical field [0001] The invention relates to the technical field of waste battery treatment, in particular to a treatment method for waste lithium cobalt oxide batteries and products thereof. Background technique [0002] In the prior art, waste lithium cobalt oxide batteries will not only cause heavy metal pollution, but also cause waste of resources. Among them, there are many kinds of waste lithium battery recycling technologies, which can be mainly divided into pyrometallurgy, hydrometallurgy and biometallurgy. Pyrometallurgy can quickly and efficiently recycle waste lithium batteries in a short distance, but factors such as excessive energy consumption, single product composition, and high equipment investment limit its industrialization. Biometallurgy can selectively recover a variety of non-ferrous metals from spent lithium batteries in an environmentally friendly manner, but harsh reaction conditions, long reaction times, and low metal recovery rates also serious...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/54H01M4/485H01M4/525H01M10/052C22B7/00C22B15/00
CPCH01M10/54H01M4/485H01M4/525H01M10/052C22B7/007C22B15/0065C22B3/16Y02E60/10C01G53/42C01P2002/54C01G53/006C22B7/005C22B26/12C22B3/165C22B3/46C22B23/0415C22B23/0469H01M10/0525C22B1/005C22B15/0067C22B21/0023Y02W30/84
Inventor 李金惠余嘉栋刘丽丽
Owner TSINGHUA UNIV
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