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

Method for one-step preparation of battery-grade lithium carbonate from lepidolite

A lepidolite, battery-grade technology, applied in the direction of lithium carbonate;/acid carbonate, etc., to achieve the effect of low production cost, stable process and improved recovery rate

Inactive Publication Date: 2020-03-17
江西南氏锂电新材料有限公司
View PDF4 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And it does not involve the roasting process method and the composition of related auxiliary materials

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 one-step preparation of battery-grade lithium carbonate from lepidolite
  • Method for one-step preparation of battery-grade lithium carbonate from lepidolite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Get its main chemical composition of the lepidolite raw material that Yichun tantalum niobium lithium ore produces as following table (wt%) surplus is fluorine,

[0043] Li 2 o

K 2 o

Na 2 o

AL 2 o 3

SiO 2

Fe 2 o 3

Rb 2 o

Cs 2 o

4.32 7.51 0.46 23.8 54.32％ 0.38 1.66 0.28

[0044] 1) To make lepidolite concentrate powder by crushing, crush the above-mentioned lepidolite raw materials through a crushing device, then pass through a high-gradient magnetic separator to remove weak magnetic iron minerals, and pass through a sieve of more than 100 mesh to obtain lepidolite concentrate pink;

[0045] 2), mix the ingredients, fully mix the lepidolite concentrate powder and compound salt potassium sulfate and sodium sulfate, control the addition of potassium sulfate and sodium sulfate to be 45% of the lepidolite concentrate powder quality, the ratio of potassium sulfate and sodium sulfate is different Accou...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for one-step preparation of battery-grade lithium carbonate from lepidolite. Specifically, lepidolite is adopted as the raw material to mix with auxiliary materials, the mixed raw material and auxiliary materials are subjected to roasting in a rotary kiln device so as to extract lithium, and the process include: crushing of concentrate powder for making lepidolite,mixing, roasting, leaching and extraction of lithium, impurity removal, lithium precipitation for preparation of battery-grade lithium carbonate, etc. The method directly prepares the battery-grade lithium carbonate product by precipitation without the process of producing industrial-grade lithium carbonate. And the method uses the process of extracting lithium by chlorine salt roasting, has smaller influence on the environment, improves the lithium recovery rate, is stable in process and easy to operate, and facilitates industrial production.

Description

Technical field: [0001] The invention relates to a method for extracting high-purity lithium carbonate from lepidolite raw materials, in particular to a method for preparing battery-grade lithium carbonate in one step using lepidolite as a raw material. Background technique: [0002] Lithium carbonate is an important chemical raw material and an important raw material for the manufacture of new energy lithium batteries. With the promulgation of the national new energy development plan, lithium battery new energy has become one of the energy industries supported by the state; and sulfur battery lithium carbonate is an important basic raw material for the development of lithium battery new energy, and its demand is increasing and its price is getting higher and higher. come higher. [0003] At the current stage of technology, the preparation of lithium salt from lithium ore generally uses lithium ore to make lepidolite raw material powder, and the majority of lithium is extra...

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): C01D15/08
CPCC01D15/08C01P2004/61C01P2006/80
Inventor 南进喜南天曾小毛刘剑叶吴进方曾位勇钟斌王家前张国强苏杰民叶盛旗廖长青邱联春
Owner 江西南氏锂电新材料有限公司
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