Method of separating and recovering valuable metals from waste lithium battery materials and application thereof

A waste lithium battery, separation and recycling technology, applied in battery recycling, recycling technology, waste collector recycling and other directions, can solve the problems of short leaching time, low pollution, high price, and achieve high-efficiency leaching, low cost, and high-efficiency preparation. Effect

Inactive Publication Date: 2019-04-23
武昌首义学院
View PDF8 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, for the acid used in the leaching process, although the leaching time is short, the temperature is low, and the pollution is smal

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method of separating and recovering valuable metals from waste lithium battery materials and application thereof
  • Method of separating and recovering valuable metals from waste lithium battery materials and application thereof
  • Method of separating and recovering valuable metals from waste lithium battery materials and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0049] Example 1

[0050] A method for separating and recovering valuable metals from waste battery materials and preparing lithium carbonate, the steps are as follows:

[0051] (1) discharging, disassembling and separating the battery material to obtain a battery positive electrode material;

[0052] (2) leaching the battery cathode material obtained in step (1) with 2.5 mol / L sulfuric acid and 0.4 g / g glucose, wherein the leaching time is 30 min, the leaching temperature is 80° C., the solid-liquid ratio is 25 g / L, and the leaching time is 30 min. Stirring is carried out during the process, and the reaction is filtered to obtain the leachate;

[0053] (3) adding additives to the leaching solution obtained in step (2) to adjust the pH value of the leaching solution to 11, so that nickel, cobalt and manganese ions in the leaching solution are precipitated, the temperature of the precipitation reaction is 30 ° C, and the reaction time is 90 min. Filtration to obtain nickel-co...

Example Embodiment

[0057] Example 2

[0058] A method for separating and recovering valuable metals from waste battery materials and preparing lithium carbonate, the steps are as follows:

[0059] (1) discharging, disassembling and separating the battery material to obtain a battery positive electrode material;

[0060] (2) leaching the battery cathode material obtained in step (1) with 2 mol / L sulfuric acid and 0.4 g / g glucose, wherein the leaching time is 30 min, the leaching temperature is 80° C., and the solid-liquid ratio is 30 g / L. The leaching process Stirring is carried out in the reaction, and the leaching solution is obtained by filtration after completion of the reaction;

[0061] (3) adding additives to the leaching solution obtained in step (2) to adjust the pH value of the leaching solution to 11, so that nickel, cobalt and manganese ions in the leaching solution are precipitated, the temperature of the precipitation reaction is 50 ° C, and the reaction time is 45 min. Filtration...

Example Embodiment

[0065] Example 3

[0066] A method for separating and recovering valuable metals from waste battery materials and preparing lithium carbonate, the steps are as follows:

[0067] (1) discharging, disassembling and separating the battery material to obtain a battery positive electrode material;

[0068] (2) leaching the battery cathode material obtained in step (1) with 1.5 mol / L sulfuric acid and 0.4 g / g glucose, wherein the leaching time is 30 min, the leaching temperature is 80 °C, the solid-liquid ratio is 25 g / L, and the leaching time is 30 min. Stirring is carried out during the process, and the reaction is filtered to obtain the leachate;

[0069] (3) adding additives to the leaching solution obtained in step (2) to adjust the pH value of the leaching solution to 11, so that nickel, cobalt and manganese ions in the leaching solution are precipitated, the temperature of the precipitation reaction is 70 ° C, and the reaction time is 90 min. Filtration to obtain nickel-cob...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method of separating and recovering valuable metals from waste lithium battery materials. The method comprises the following steps that a positive electrode material of a battery is leached by using sulfuric acid and a reducing agent, and filtering is carried out after the reaction is completed to obtain a leachate, wherein the reducing agent is one kind or multiple kindsof glucose, cane sugar, vitamin C, grape seeds, sodium thiosulfate and sodium sulfite; an additive is added into a leaching solution so as to adjust the pH value of the leaching solution in the rangeof 10-12, nickel, cobalt and manganese ions in the leaching liquid are enabled to be co-precipitated, and filtering is carried out to obtain a nickel-cobalt-manganese-containing precipitate and a lithium-ion solution after the reaction is finished; and the lithium-ion solution is concentrated to 20-45 g/L, excessive anhydrous sodium carbonate is added into the concentrated lithium-ion solution for reaction to obtain precipitate lithium carbonate; and the invention further discloses application of the product prepared by the method in battery production. According to the method and the application, leaching efficiency is high the process is simple, the waste liquid can be treated to prepare the terminal product lithium carbonate, and the pollution caused by the waste lithium battery to theenvironment can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of waste battery recycling, and more particularly, relates to a method for recycling valuable metals from positive electrode materials of lithium batteries and the application of products obtained by the recycling method. Background technique [0002] With the continuous expansion of the application field of lithium-ion batteries, especially as the power source of new energy devices such as electric vehicles whose share is constantly increasing, lithium-ion batteries have been widely used. At the same time, the recycling problem of waste lithium-ion batteries has become increasingly prominent, because the cathode materials of waste lithium-ion batteries contain a large amount of valuable metals, which will cause environmental pollution and waste of rare metal resources if not properly disposed of. [0003] Nickel-cobalt manganate lithium battery is a relatively mature and reliable lithium battery for commerc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22B7/00C22B26/12C22B23/00C22B47/00C01D15/08H01M10/54
CPCC01D15/08C22B7/007C22B23/043C22B23/0461C22B26/12C22B47/00H01M10/54Y02P10/20Y02W30/84
Inventor 郑莹刘建文赵景瑞陈秋丽张思维凌海莫文婷
Owner 武昌首义学院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap