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

Adsorption particles for extracting lithium from natural brine based on molecular sieve adsorbent and preparation method of adsorption particles

A technology for adsorbing particles and molecular sieves, which is applied in the direction of adsorption of water/sewage treatment, chemical instruments and methods, and improvement of process efficiency. The effect of improving the strength of acid and alkali resistance

Active Publication Date: 2022-05-31
北京中科顺谷科技发展有限公司
View PDF12 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it does not consider how to improve the recovery efficiency of lithium ions alone.

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
  • Adsorption particles for extracting lithium from natural brine based on molecular sieve adsorbent and preparation method of adsorption particles
  • Adsorption particles for extracting lithium from natural brine based on molecular sieve adsorbent and preparation method of adsorption particles
  • Adsorption particles for extracting lithium from natural brine based on molecular sieve adsorbent and preparation method of adsorption particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The present embodiment provides a preparation method flow of natural brine lithium extraction and adsorption particles based on molecular sieve adsorbent, such as figure 1 shown

[0040] First, aluminum chloride hexahydrate, lithium hydroxide and sodium silicate are respectively made into aqueous solutions; aluminum chloride hexahydrate solution is coagulated with lithium hydroxide solution to form a first molecular sieve structure slurry; lithium hydroxide is configured into a solution to form The second molecular sieve structure slurry.

[0041] Add sodium silicate: boron hydroxide mass ratio 10:1 solution to the first molecular sieve structure slurry and mix, and control the pH value to 5.9; add silica aerogel with an average particle size of 10 μm to the second molecular sieve structure slurry Particles (mass ratio is 8:1), and boron hydroxide (mass ratio with the slurry is 1:10) is added to mix, and then accompanied in a container with extraction under the action ...

Embodiment 2

[0045] The only difference between this example and Example 1 is that boron hydroxide is not added to the second molecular sieve structure slurry. like figure 2 Shown are the schematic diagrams of the granular products of Examples 1 and 2, their microscopic particle structure and their composition, wherein the crushed particles comprise a sodium silicate-bonded aluminum hydroxide molecular sieve matrix and a silica aerosol. glue particles. The matrix is ​​sodium silicate via such as image 3 (a) the through hole formed by the aluminum hydroxide particle skeleton bonded by sodium silicate and the hydrous lithium chloride free radical or hydrous lithium chloride-tetrahydroxyboron double free radical in the through hole formed by the schematic structure, Silica aerogel particles are image 3 (b) The three-dimensional network mesopores formed by the silica particles formed by the schematic structure and the hydrous lithium chloride free radicals or the hydrous lithium chloride...

Embodiment 3

[0047] The difference from Example 1 is that only the first molecular sieve structure slurry coagulated with aluminum chloride hexahydrate solution and lithium hydroxide solution is used to bond sodium silicate to form through-holes to fill aqueous lithium chloride free radicals. The lithium adsorption effect of Examples 1-3 is shown in Table 1

[0048] Table 1 Lithium ion adsorption rate and wear coefficient of Examples 1-3 compared with the results of the prior art

[0049]

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to adsorption particles for extracting lithium from natural brine based on a molecular sieve adsorbent and a preparation method of the adsorption particles. The adsorption particles comprise a sodium silicate bonded aluminum hydroxide molecular sieve or a molecular sieve formed by coupling the sodium silicate bonded aluminum hydroxide molecular sieve and silicon dioxide aerogel, water-containing lithium chloride or lithium chloride-tetrahydroxy boron free radicals and PVC (polyvinyl chloride), therefore, the through hole bedding state structure is formed. The adsorbent product has unique adsorption performance only limited to a lithium chloride solution as a solute, and meanwhile, the embedded lithium chloride low-concentration solution adopted by the adsorbent and the lithium chloride solution in brine are subjected to concentration balance adsorption and clear water concentration-free desorption in the adsorption work. A pore-forming agent of an azo granulation material is adopted for extrusion preparation of finished product particles, and the advantage of no pollution caused by physical adsorption is achieved. According to the composition scheme of the adsorption particles, the problem that the adsorption rate is reduced by 40-50% after the adsorbent is granulated is solved, the highest adsorption rate of 4-8 mg / g is achieved, and the highest adsorption rate is improved by 50% compared with that of a current lithium aluminate adsorbent.

Description

technical field [0001] The invention relates to an adsorbent for extracting lithium from natural brine, in particular to natural brine lithium extraction and adsorption particles based on a molecular sieve adsorbent and a preparation method thereof, belonging to the field of metal ion extraction. Background technique [0002] Lithium elements in lithium batteries cannot be obtained directly. Lithium resources generally come from water bodies associated with natural multi-minerals. For example, natural brine is rich in lithium ions, which has become the key mining target of lithium resources. There are mainly two directions in the mining of the existing technology. The first is to adopt the type of lithium adsorbent, and the second is to adopt halogen exchange for the removal of high-magnesium brine. The former is mostly through lithium chloride solution and lithium hydroxide, or carbonic acid. Lithium or lithium chloride is mixed; then NaOH is used as the alkaline reagent to...

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): B01J20/26B01J20/30C02F1/28C22B3/24C22B26/12
CPCB01J20/18B01J20/046B01J20/261B01J20/3007B01J20/3021C02F1/281C02F1/285C22B3/24C22B26/12Y02P10/20
Inventor 胡国荣陆一平邹建平
Owner 北京中科顺谷科技发展有限公司
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