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Adsorption carrier for recycling of metal in waste lithium ion batteries and preparation method thereof

A technology of lithium ion battery and adsorption carrier, which is applied to the field of adsorption carrier for metal recovery and its preparation, can solve the problem of insufficient application of lithium metal battery, and achieve the effect of reducing cost

Inactive Publication Date: 2018-10-12
四会市恒星智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Lithium batteries can be roughly divided into lithium metal batteries and lithium ion batteries. Although lithium metal batteries are superior to lithium ion batteries in terms of safety, specific capacity, self-discharge rate and performance-price ratio, due to their own high technical requirements, The application of lithium metal batteries is far less than that of lithium ion batteries

Method used

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Examples

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Effect test

preparation example Construction

[0019] The invention provides a method for preparing an adsorption carrier used for recycling metals in waste lithium ion batteries, comprising the following steps:

[0020] (1) Mix chitosan and pyroglutamic acid, add water to dissolve, then add acidic solution to adjust the pH value to 4.0-5.0, heat to 40-45°C and keep stirring for 30-40min, then add manganese dioxide and For thiocarbazide, continue to keep warm for 2 to 3 hours, after centrifugal filtration, send the filter residue into a freeze dryer, dry the obtained solid and make it into a micropowder through an ultrafine pulverizer;

[0021] (2) Dissolving and dispersing the above-mentioned micropowder and soluble metal salt into an aqueous acetic acid solution, stirring and reacting at 50-60°C for 3-5 hours, and preparing an adsorption carrier precursor;

[0022] (3) impregnating the adsorption carrier precursor with an acidic solution to separate out metal ions in the adsorption carrier precursor to prepare the adsorp...

Embodiment 1

[0052] A method for recovering valuable metals from waste lithium-ion batteries:

[0053] (1) Preparation of adsorption carrier:

[0054] (1.1) Mix chitosan and pyroglutamic acid, add water to dissolve, then add hydrochloric acid solution to adjust the pH value to 4.5, heat to 42 ° C and keep stirring for 30 minutes, then add manganese dioxide and thiocarbazide, continue Insulated for 3 hours, after centrifugal filtration, the filter residue was sent to a freeze dryer, and the obtained solid was dried and made into a fine powder by an ultrafine pulverizer;

[0055] The micropowder is prepared from the following materials in parts by weight: 40 parts of chitosan, 8 parts of pyroglutamic acid, 25 parts of manganese dioxide, and 0.3 parts of thiocarbazide;

[0056] (1.2) Dissolving and dispersing the above micropowder and cobalt sulfate into an aqueous acetic acid solution with a mass fraction of 2%, stirring and reacting at 55° C. for 4 hours, to prepare an adsorption carrier p...

Embodiment 2

[0063] A method for recovering valuable metals from waste lithium-ion batteries:

[0064] (1) Preparation of adsorption carrier:

[0065] (1.1) Mix chitosan and pyroglutamic acid, add water to dissolve, then add hydrochloric acid solution to adjust the pH value to 4.0, heat to 40 ° C and keep stirring for 30 minutes, then add manganese dioxide and thiocarbazide, continue Heat preservation reaction for 2 hours, after centrifugal filtration, send the filter residue into a freeze dryer, dry the obtained solid and make it into a micropowder through an ultrafine pulverizer;

[0066] The micropowder is prepared from the following materials in parts by weight: 33 parts of chitosan, 3 parts of pyroglutamic acid, 20 parts of manganese dioxide, and 0.1 part of thiocarbazide;

[0067] (1.2) Dissolving and dispersing the above micropowder and cobalt sulfate into an aqueous solution of acetic acid with a mass fraction of 0.5%, stirring and reacting at 50° C. for 3 hours, to prepare an ads...

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Abstract

The invention belongs to the technical field of recycling of waste lithium batteries, and particularly relates to an adsorption carrier for recycling of metal in waste lithium ion batteries and a preparation method thereof. The preparation method comprises the following steps of (1) mixing chitosan and pyroglutamic acid, adding water to dissolve, adding an acid solution, adjusting the pH (potential of hydrogen) value to 4.0 to 5.0, heating, warming and stirring; adding manganese dioxide and thiocarbazide, reacting for 2 to 3h under the heat preservation condition, centrifuging and filtering, sending filtering residue into a freeze-drying machine, drying the solid, and crushing by a superfine crusher, so as to obtain a micropowder; (2) dissolving the micropowder and soluble metal salt, dispersing into an acetic acid water solution, and stirring to react, so as to obtain a precursor of the adsorption carrier; (3) impregnating the precursor of the adsorption carrier by the acid solution,so as to obtain the adsorption carrier. The adsorption carrier has the advantages that the metal is recycled from the waste lithium ion batteries in a targeted way; the adsorption carrier for the recycling of metal ions can be repeatedly utilized, so as to effectively reduce the recycling cost of the metal.

Description

technical field [0001] The invention belongs to the technical field of recycling waste lithium batteries, and in particular relates to an adsorption carrier used for recycling metals in waste lithium ion batteries and a preparation method thereof. Background technique [0002] Lithium batteries can be roughly divided into lithium metal batteries and lithium ion batteries. Although lithium metal batteries are superior to lithium ion batteries in terms of safety, specific capacity, self-discharge rate and performance-price ratio, due to their own high technical requirements, The application of lithium metal batteries is far less than that of lithium ion batteries. Lithium-ion battery is a secondary battery (rechargeable battery), which mainly relies on lithium ions to move between the positive and negative electrodes to work. During the charging and discharging process, Li + Intercalation and deintercalation back and forth between two electrodes: when charged, Li + It is dei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30H01M10/54
CPCB01J20/06B01J20/22B01J20/24H01M10/54Y02W30/84
Inventor 丘焕山
Owner 四会市恒星智能科技有限公司
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