Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for recycling cobalt from waste and old lithium ion battery

A lithium-ion battery and lithium battery technology, applied in the direction of cobalt oxide/cobalt hydroxide, etc., can solve the problems of secondary pollution, increased treatment costs, and limit the scale of waste lithium battery treatment, and achieve the effect of simple and feasible preparation process

Inactive Publication Date: 2008-12-10
TSINGHUA UNIV
View PDF4 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, lithium batteries contain a small amount of metal elemental lithium, and elemental lithium is highly flammable and explosive. In addition, the processing speed of manual disassembly or small machinery will limit the processing scale of waste lithium batteries. Therefore, these There are great limitations in the application of the method
In addition, the use of methods such as incineration to remove organic matter, solvent extraction, separation and recovery of cobalt, on the one hand, is prone to secondary pollution, and on the other hand, increases the cost of treatment

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 for recycling cobalt from waste and old lithium ion battery
  • Method for recycling cobalt from waste and old lithium ion battery
  • Method for recycling cobalt from waste and old lithium ion battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention is illustrated below in conjunction with embodiment.

[0028] Take 5 waste lithium batteries, with a total weight of 230g, and the metal components are shown in Table 1. The non-metallic substance part includes carbon, plastic casing, organic diaphragm and electrolyte, etc.

[0029] Table 1 Lithium-ion battery metal component content (%)

[0030]

[0031] These batteries were soaked in salt water for 5 hours to release the residual electricity. On the one hand, the short circuit of the battery during the crushing process was avoided to cause an explosion, and on the other hand, the content of lithium intercalation in the CuC electrode was reduced. Air-dry the fully discharged battery, and then crush the waste lithium battery with a crusher equipped with a 12mm aperture screen to obtain 206.6g of undersize; pour the undersize into an ultrasonic cleaning tank for ultrasonic cleaning, at room temperature, fully Wash under stirring conditions for ...

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 for recovering cobalt from a waste lithium ion battery. The method comprises the following steps that: the waste lithium ion battery is placed into salt solution to be discharged; the discharged waste lithium ion battery is mechanically crushed; the crushed waste lithium ion battery is stirred and cleaned by ultrasonic wave; a grizzly screen is used to separate after the cleaning; the leaching of filtrate Co and Li is performed; Fe<3+> is removed through purification; Cu<2+> is removed through purification; the cobalt is precipitated by ammonium oxalate; and finally a filtered cobalt oxalate precipitate is cleaned by de-ionized water, is dried in a drying box, and then is placed into a muffle furnace for heat treatment for 2 hours at a temperature of 600 DEG C to produce Co2O3 powder. The method has simple and convenient and feasible preparation process, the produced Co2O3 can meet the requirement of product quality of Co2O3-Y1(GB6518-86), and the recovery rate of the Co during the whole process is more than 89 percent.

Description

technical field [0001] The invention relates to a method for separating and recovering cobalt from waste lithium ion batteries, and belongs to the technical field of recycling waste lithium batteries. Background technique [0002] Lithium-ion batteries are more and more widely used in daily life due to their advantages such as high energy density, high working voltage, long cycle life and no memory effect. These lithium-ion batteries usually cause certain harm to the environment after they are scrapped. At the same time, the metal Co contained in lithium batteries is a strategic resource with high value. Recycling waste lithium batteries and waving hands. [0003] At present, domestic research on lithium-ion battery recycling has made important progress, and there are a number of patents on waste lithium battery recycling technology. [0004] Patent [200310103584.7] recycles waste lithium batteries through roasting, crushing, sorting, and electrolytic recovery of Cu and Co...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/04
Inventor 李金惠王泽峰陈瑶
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com