Leaching system for recycling lithium and cobalt from waste lithium cobalt oxide battery and method and application thereof

A lithium cobalt oxide and leaching technology, which is applied in the field of waste resource recycling, can solve the problems of lithium battery recycling companies increasing process costs and increasing the difficulty of subsequent treatment of waste acid, etc., to achieve leaching process optimization, high leaching efficiency, and low raw material costs Effect

Pending Publication Date: 2021-04-16
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventor found that the use of a large amount of acid solution in the acid leaching process will increase the difficulty of subsequent treatment of waste acid and increase the process cost for lithium battery recycling enterprises

Method used

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  • Leaching system for recycling lithium and cobalt from waste lithium cobalt oxide battery and method and application thereof
  • Leaching system for recycling lithium and cobalt from waste lithium cobalt oxide battery and method and application thereof
  • Leaching system for recycling lithium and cobalt from waste lithium cobalt oxide battery and method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A kind of leaching method of reclaiming the lithium cobalt in waste lithium cobalt oxide battery comprises the following steps:

[0045] (1) Discharge and disassemble the waste lithium cobaltate battery to obtain the positive electrode of the electrode, and obtain lithium cobaltate powder after crushing and other treatments.

[0046] (2) Make the leaching system of lithium cobalt, i.e. lithium cobalt oxide, polyvinyl chloride and water. Wherein, the volume of water is 210ml, and the mass sum of polyvinyl chloride and lithium cobaltate is 21g.

[0047] (3) After mixing the leaching system made in (2), put it into the reaction kettle and seal it, and continuously feed nitrogen for five minutes. After energized heating to 275°C, the reaction kettle was cooled with cooling water, and after cooling, Li + and Co 3+ mixed solution.

[0048] Experiments were carried out under different mass ratios of polyvinyl chloride and lithium cobaltate, and the Li in the solution after t...

Embodiment 2

[0050] A kind of leaching method of reclaiming the lithium cobalt in waste lithium cobalt oxide battery comprises the following steps:

[0051] (1) Discharge and disassemble the waste lithium cobaltate battery to obtain the positive electrode of the electrode, and obtain lithium cobaltate powder after crushing and other treatments.

[0052] (2) Make the leaching system of lithium cobalt, i.e. lithium cobalt oxide, polyvinyl chloride and water. Among them, the volume of water is 210ml, the mass of polyvinyl chloride is 14g, and the mass of lithium cobaltate is 7g.

[0053] (3) After mixing the leaching system made in (2), put it into the reaction kettle and seal it, and continuously feed nitrogen for five minutes. After electrified heating to different temperatures, the reaction kettle is cooled with cooling water, and after cooling, a mixture containing Li is obtained. + and Co 3+ mixed solution.

[0054] Experiments were carried out at different reaction temperatures, and...

Embodiment 3

[0056] A method for leaching lithium cobalt in reclaiming waste lithium cobalt oxide batteries, comprising the following steps:

[0057] (1) Discharge and disassemble the waste lithium cobaltate battery to obtain the positive electrode of the electrode, and obtain lithium cobaltate powder after crushing and other treatments.

[0058] (2) Make the leaching system of lithium cobalt, i.e. lithium cobalt oxide, polyvinyl chloride and water. Among them, the volume of water is 210ml, the mass of polyvinyl chloride is 14g, and the mass of lithium cobaltate is 7g.

[0059] (3) After mixing the leaching system made in (2), put it into the reaction kettle and seal it, and continuously feed nitrogen for five minutes. After heating to 325°C with electricity, keep it warm for a period of time, then cool the reaction kettle with cooling water, and after cooling, get a solution containing Li + and Co 3+ mixed solution.

[0060] Experiments were carried out at different holding times, and...

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Abstract

The invention provides a leaching system for recycling lithium and cobalt from a waste lithium cobalt oxide battery and a method and an application thereof, and belongs to the technical field of waste resource recycling. Different from a traditional method for leaching lithium by adopting acid liquor, the method has the advantages that a lithium cobalt oxide-polyvinyl chloride-water leaching system is adopted, lithium cobalt in a lithium cobalt oxide battery positive electrode material is leached in one step, the acid liquor is not needed, and compared with other lithium leaching methods, the materials used in the method are waste polyvinyl chloride and water, so that the raw material cost is low; the leaching efficiency of lithium cobalt is relatively high; and meanwhile, the co-treatment of the waste lithium battery positive electrode material and the waste polyvinyl chloride can be realized, so that the economic and environment-friendly benefits are good, and the system has a good practical application value.

Description

technical field [0001] The invention belongs to the technical field of waste resource recovery and utilization, and in particular relates to a leaching system for recovering lithium cobalt from waste lithium cobalt oxide batteries and its method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] With the reduction of electricity price and the improvement of social environmental awareness, electric vehicles are more and more favored by people. Lithium batteries are widely used in the field of electric vehicles due to their high energy density, high voltage and long cycle life. With the large-scale development of electric vehicles, the amount of scrapped lith...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B26/12C22B23/00H01M10/54
CPCY02W30/84Y02P10/20
Inventor 陈娟熊中朴于洋任霄汉董勇许焕焕
Owner SHANDONG UNIV
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