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

Method of extracting lithium isotope <6>Li with centrifugal extraction machine

A centrifugal extractor and a technology for extracting lithium, which are applied to the separation of different isotopic elements, separation methods, chemical instruments and methods, etc., can solve the problems of high cost, small separation coefficient, and low processing capacity, and achieve improved corrosion resistance. Strong corrosion resistance and compact structure

Active Publication Date: 2017-08-29
ZHENGZHOU TIANYI EXTRACTION TECH
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the purpose of the invention is to provide a kind of application centrifugal extractor to extract lithium isotope for the deficiencies in the prior art. 6 Li's method solves the problems of high cost, small separation coefficient, and low processing volume, and achieves a high extraction rate at the same time.

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 extracting lithium isotope &lt;6&gt;Li with centrifugal extraction machine
  • Method of extracting lithium isotope &lt;6&gt;Li with centrifugal extraction machine
  • Method of extracting lithium isotope &lt;6&gt;Li with centrifugal extraction machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method of extracting lithium isotopes using a centrifugal extractor 6 Li's method includes the following steps:

[0047] (1) Extraction section: Lithium hydroxide aqueous solution and extractant are mixed and added to a centrifugal extractor for extraction at a volume ratio of 1:1; normal temperature, 5-stage countercurrent extraction; the extractant is tributyl phosphate and kerosene, and The volume ratio is, tributyl phosphate / kerosene=1:2;

[0048] (2) Alkali washing section: the organic phase extracted in step 1) is added to a centrifugal extractor for alkali washing, normal temperature, 2-3 stage countercurrent extraction; the volume of the organic phase and the lye is 1:1; the The lye is a sodium hydroxide solution with a mass concentration of 20%;

[0049] (3) stripping section: strip the organic phase obtained in step 2) in the centrifugal extractor, normal temperature, 4-5 stages of countercurrent stripping; the volume of the organic phase and the stripping...

Embodiment 2

[0053] A method of extracting lithium isotopes using a centrifugal extractor 6 Li's method includes the following steps:

[0054] (1) Extraction section: Lithium hydroxide aqueous solution and extraction agent are mixed and added to a centrifugal extractor for extraction with a volume ratio of 1:6; normal temperature, 6-stage countercurrent extraction; the extraction agent is tributyl phosphate and kerosene, which The volume ratio is, tributyl phosphate / kerosene=1:4;

[0055] (2) Alkali washing section: the organic phase extracted in step 1) is added to a centrifugal extractor for alkali washing, normal temperature, 3-stage countercurrent extraction; the volume ratio of the organic phase and the lye is 3: 1; the alkali Liquid is the sodium hydroxide solution that mass concentration is 30%;

[0056] (3) stripping section: the organic phase obtained in step 2) is stripped in the centrifugal extractor, at normal temperature, 4-5 stages of countercurrent stripping; the volume of...

Embodiment 3

[0059] A method of extracting lithium isotopes using a centrifugal extractor 6 Li's method includes the following steps:

[0060] (1) Extraction section: Lithium hydroxide aqueous solution and extraction agent are mixed and added to a centrifugal extractor for extraction with a volume ratio of 1:5; normal temperature, 5-stage countercurrent extraction; the extraction agent is tributyl phosphate and kerosene, which The volume ratio is, tributyl phosphate / kerosene=1:3;

[0061] (2) Alkaline washing section: the organic phase extracted in step 1) is added to a centrifugal extractor for alkaline washing, normal temperature, 3-stage countercurrent extraction; the volume ratio of the organic phase and the lye is 2: 1; the alkali Liquid is the sodium hydroxide solution that mass concentration is 25%;

[0062] (3) stripping section: strip the organic phase obtained in step 2) in the centrifugal extractor, normal temperature, 4-stage countercurrent stripping; the volume ratio of the ...

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 extracting lithium isotope <6>Li with a centrifugal extraction machine. A device includes an extraction section, an alkali washing section, and a back extraction section. The lithium isotope extraction device in the invention is a novel and high-effective centrifugal extraction device, when the device is combined with a technology of extracting the lithium isotope through a solvent extraction method, stage efficiency and separation effect are greatly improved, the number of extraction stages is reduced, processing load is increased, and recovery rate of an extraction agent is increased. The method solves the problems of high cost, low processing load and difficulty in separation in the prior art, and has excellent market application prospect.

Description

technical field [0001] The present invention relates to a lithium isotope 6 The extraction method of Li, especially relates to a kind of extraction lithium isotope of application centrifugal extractor 6 Li's method. Background technique [0002] Lithium is the lightest metal in nature, and it exists in two stable isotopes namely 6 Li and 7 The relative abundance of Li is 6 Li is 7.53%, 7 Li is 92.47%. In the nuclear energy industry, 6 Li and 7 Li has different nuclear reaction properties and plays an important role in nuclear materials. Therefore, their separation has always been an important research topic. [0003] At present, there are many separation methods of lithium isotopes, which can be roughly divided into chemical methods and physical methods. Chemical methods include lithium amalgam method, solvent extraction, ion exchange chromatography, fractional precipitation and fractional crystallization, etc. Physical methods include electromagnetic methods, mol...

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): B01D59/24B01D59/20
CPCB01D59/20B01D59/24
Inventor 王利军
Owner ZHENGZHOU TIANYI EXTRACTION TECH
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