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

Leaching method of nickel cobalt lithium manganate waste battery positive-negative electrode mixed material

A technology of nickel-cobalt lithium manganate and mixed materials is applied in the field of leaching of positive and negative electrode mixed materials of nickel-cobalt lithium manganate waste batteries, which can solve the problems of industrial pure oxygen storage, transportation and use, and industrial pure oxygen is uneconomical for self-use. The problems such as the small amount of industrial pure oxygen can achieve obvious economic and environmental benefits, reduce pollution control costs, and improve the effect of metal leaching rate.

Inactive Publication Date: 2014-04-30
SICHUAN NORMAL UNIVERSITY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The consumption of nitric acid in the nitric acid leaching method is large, and a large amount of nitrogen oxides will be produced, polluting the environment
All wet processes have the problem of how to economically increase the leaching speed, increase the metal leaching rate, and reduce the consumption of acid and other auxiliary materials.
Although the pure oxygen leaching method in the nitric acid processing industry and the pure oxygen leaching method in the mixed acid processing industry have solved the above problems, the leaching equipment is more complicated, and the amount of industrial pure oxygen required for the leaching of waste batteries is not large, and waste battery treatment enterprises produce on-site Industrial pure oxygen is not economical for personal use, and the storage, transportation and use of industrial pure oxygen are troublesome

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Mix 100g of nickel-cobalt lithium manganate waste battery positive and negative electrode mixed materials (containing 14.5% nickel, 20.3% cobalt, 17.5% lithium, 2.2% aluminum, 2.5% copper, 12.9% manganese) and ≤1.5mm wheat straw powder 29g was added to a titanium-lined pressure reaction kettle with a volume of 2L, and 1650ml of a mixed acid solution with a sulfuric acid concentration of 1.5mol / L and a nitric acid concentration of 5g / L was added, and the leaching was carried out under closed stirring (stirring speed 80r / min) at 50℃~60℃ 4h, liquid-solid separation was carried out after leaching to obtain 1600ml of leaching solution (without leaching residue washing water). The leaching rates of nickel, cobalt, lithium, copper, aluminum and manganese were 99.2%, 99.0%, 99.1%, 98.5%, 99.0% and 99.0%, respectively (according to the nickel, cobalt, lithium entering the leaching solution and the leaching residue washing solution) , copper, aluminum and manganes...

Embodiment 2

[0026] Example 2: Mix 300g of nickel-cobalt lithium manganate waste battery positive and negative electrode mixed materials (containing 14.5% nickel, 20.3% cobalt, 17.5% lithium, 2.2% aluminum, 2.5% copper, 12.9% manganese) and ≤1.5mm wheat straw powder 105g was added to a titanium-lined pressure reaction kettle with a volume of 5L, 3000ml of mixed acid solution with a sulfuric acid concentration of 3mol / L and a nitric acid concentration of 10g / L was added, and leached for 2h at 70℃~80℃ with closed stirring (stirring speed 70r / min) , and liquid-solid separation is carried out after the leaching is completed to obtain 2800ml of leaching solution (excluding leaching residue washing water). The leaching rates of nickel, cobalt, lithium, copper, aluminum and manganese were 99.4%, 99.2%, 99.5%, 99.2%, 98.6% and 99.1%, respectively (according to the nickel, cobalt, lithium entering the leaching solution and the leaching residue washing solution) , copper, aluminum and manganese ...

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 provides a leaching method of a nickel cobalt lithium manganate waste battery positive-negative electrode mixed material, which comprises the following steps: adding a positive-negative electrode mixed material subjected to roasting pretreatment and separated from nickel cobalt lithium manganate waste batteries and ryegrass powder into a pressure-resistant sulfuric-acid / nitric-acid-corrosion-resistant reaction kettle, adding a sulfuric acid-nitric acid mixed solution, and carrying out agitation leaching under sealed conditions.

Description

technical field [0001] The invention relates to a method for leaching the positive and negative electrode mixed materials of nickel-cobalt lithium manganate waste battery. Background technique [0002] Nickel-cobalt lithium manganese oxide battery (battery whose main metal elements are nickel, cobalt, manganese, and lithium in the positive and negative mixed materials) is a new type of battery. After the battery is used and scrapped, a large number of waste batteries will be produced. Because this type of battery contains a large amount of heavy metals, if it is discarded into the environment, it will cause great direct and potential harm to the environment. The positive and negative mixed materials of nickel cobalt lithium manganate battery mainly contain nickel, cobalt, lithium, copper, aluminum and manganese, of which the total content of nickel, cobalt and lithium is as high as 50%, which is very valuable for recycling. At present, the processes for recovering cobalt, ...

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): C22B7/00C22B23/00C22B47/00
CPCY02P10/20
Inventor 龙炳清龚婕王杰才
Owner SICHUAN NORMAL UNIVERSITY
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