Method for preparing spherical granular lithium ion sieve

A lithium ion, spherical technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor appearance and insufficient strength of lithium ion sieves, and achieve good fluidity, high production efficiency, and high particle strength. Effect

Active Publication Date: 2016-11-09
CENT SOUTH UNIV
View PDF7 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the technical problems of insufficient strength and poor appearance of existing lithium ion sieves, the present invention provides a method for preparing spherical granular lithium ion sieves by suspension polymerization. The lithium ion sieves produced by this method have high strength, uniform particle size, Lithium adsorbent granulation method suitable for industrial production application

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 preparing spherical granular lithium ion sieve
  • Method for preparing spherical granular lithium ion sieve
  • Method for preparing spherical granular lithium ion sieve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Weigh 2.5 g of sodium chloride, 0.05 g of polyvinyl alcohol, and 0.25 g of gelatin, and dissolve them in 50 mL of pure water to form an aqueous phase. Measure 1.65 mL of styrene, 5.45 mL of divinylbenzene, 4.77 mL of methyl methacrylate, 10 mL of n-heptane, and 0.3 g of benzoyl peroxide, mix and dissolve to obtain an oil phase. First add the water phase to a three-necked flask with a reflux condenser, and stir until completely dissolved; slowly add 5 g of surface-modified powdered ion sieve (modified by soaking in octadecanoic acid ethanol solution) under stirring, and start heating. After the temperature rises to 60°C, add the oil phase. Slowly raise the temperature to 80°C, and conduct constant temperature polymerization for 3 hours; then raise the temperature to 90°C, and boil the balls for 2 hours. The granulated ion sieve spheres were obtained by filtration, and washed 2-3 times with hot water at 80° C. to remove the granular gelatin. The spheres were then placed...

Embodiment 2

[0057] Weigh NaOH 0.1g, MgCl 2 ·6H 2 Add 0.25g of O to 50ml of deionized water to dissolve, then mix the two solutions; then weigh 0.5g of gelatin and 0.1g of polyvinyl alcohol, add them to the above mixed solution, heat and dissolve to obtain the water phase. Measure 9 mL of styrene, 1 mL of methyl methacrylate, and 0.45 g of benzoyl peroxide, mix and dissolve to obtain an oil phase. First add the water phase into a three-necked flask with a reflux condenser, stir and heat, and when the temperature rises to 60°C, slowly add 6g of surface-modified powdered ion sieve (soaked in octadecanoic acid ethanol solution) under stirring. modification), and then slowly add to the oil phase. Slowly raise the temperature to 80°C, and conduct constant temperature polymerization for 3 hours; then raise the temperature to 90°C, and boil the balls for 1 hour. The granulated ion sieve spheres were obtained by filtration, and washed 2-3 times with hot water at 80° C. to remove the granular ge...

Embodiment 3

[0060] Weigh 3 g of sodium chloride, 0.2 g of polyvinyl alcohol, and 0.5 g of gelatin, and dissolve them in 100 mL of pure water to form an aqueous phase. Measure 10 mL of styrene and 0.45 g of benzoyl peroxide, mix and dissolve to obtain an oil phase. First add the water phase into a three-necked flask with a reflux condenser, stir and heat, and when the temperature rises to 70°C, slowly add 6g of surface-modified powdered ion sieve (soaked in octadecanoic acid ethanol solution) under stirring. modification), and then slowly add to the oil phase. Slowly raise the temperature to 80°C, and conduct constant temperature polymerization for 3 hours; then raise the temperature to 90°C, and boil the balls for 1 hour. The granulated ion sieve spheres were obtained by filtration, and washed 2-3 times with hot water at 80° C. to remove the granular gelatin. Then the particles were dried at 60°C to obtain a spherical granular ion sieve precursor, and after acid washing, a spherical gra...

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 diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing a spherical granular lithium ion sieve. The method comprises the following steps: 1) mixing a dispersant and water, dissolving the materials to obtain a water phase; 2) adding a powder lithium ion sieve in the water phase obtained in the step 1), stirring the materials, heating the materials, adding an oil phase containing a monomer and an initiator for performing a suspension polymerisation reaction; wherein the monomer comprises styrene; and 3) after the reaction in the step 2) is complete, continuously heating the materials, hardening the spherical particles prepared by the suspension polymerisation reaction, washing the hardened particles, drying, pickling, and drying the materials to obtain the spherical lithium ion sieve. The prepared spherical granular lithium ion sieve has the advantages of uniform granularity and high intensity, the oil phase recovery rate is greater than 95%, and the powder ion sieve recovery rate is 100%.

Description

technical field [0001] The invention belongs to the field of preparation of ion sieve adsorbent, in particular to a preparation method of spherical granular lithium ion sieve. Background technique [0002] Lithium is a metal with extremely high electrochemical activity and has a wide range of applications. It has important uses in lithium batteries, controllable nuclear fusion reactors, aerospace, glass, ceramics, medicine and other fields. The market demand for lithium is growing rapidly. The reserves of solid lithium ore in the world are becoming increasingly depleted and cannot meet the market demand. Salt lake brine, seawater, well brine, etc. are huge liquid lithium deposits. In recent years, the extraction of lithium from these liquid ores has been paid great attention at home and abroad. At present, nearly 80% of the lithium salt is the product of lithium extraction from brine. Comprehensive development and utilization Lithium brine resources have become the mainstre...

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): C08F112/08C08F212/08C08F220/14C08F212/36C08F2/20C08F2/44C08K9/04C08K3/24B01J20/26
CPCB01J20/02B01J20/264C08F112/08C08F212/08C08F212/36C08K3/24C08K9/04C08F220/14C08F2/20C08F2/44
Inventor 石西昌王尚兴李志伟陈亚徐徽杨喜云
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap