Method for preparing high-performance brine lithium-extraction adsorption agent and adsorption agent prepared by method

A lithium adsorption, high-performance technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of low pore volume and specific surface area of ​​anion exchange resin, affecting lithium extraction capacity, and low loading of active inorganic particles, etc. The adsorption speed is fast, the service life is ensured, and the service life is long.

Active Publication Date: 2014-09-03
西藏容汇锂业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the loading problem of active inorganic particles and maintains its lithium extraction activity, but the pore volume and specific surface area of ​​t

Method used

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  • Method for preparing high-performance brine lithium-extraction adsorption agent and adsorption agent prepared by method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The method for preparing high-performance brine extracting lithium adsorbent comprises the following steps:

[0032] (1) In a 2000ml flask equipped with a stirring and temperature control device, add water, dispersant, and sodium chloride, and stir at room temperature until dissolved to form an aqueous phase. Wherein, water 500ml; dispersant is gelatin 2.0g, methyl hydroxypropyl cellulose 0.5g; Sodium chloride 25g.

[0033] (2) The oil phase is composed of reactants and porogens, the reactants include monomers and cross-linking agents. Specifically, the monomer is 100 g of butyl methacrylate; the crosslinking agent is 200 g of divinylbenzene and 100 g of diethylene glycol dimethacrylate; the porogen is 150 g of octanol and 50 g of toluene. A total of 600g of oil phase.

[0034] (3) Add the initiator to the oil phase formed in step (2), and stir at room temperature until completely dissolved. The initiator is 1 g of benzoyl peroxide and 1 g of azobisisobutyronitrile. ...

Embodiment 2

[0041] The method for preparing high-performance brine extracting lithium adsorbent comprises the following steps:

[0042] (1) In a 2000ml flask equipped with a stirring and temperature control device, add water, dispersant, and sodium chloride, and stir at room temperature until dissolved to form an aqueous phase. Wherein, water 500ml; dispersant is gelatin 0.5g, polyvinyl alcohol 1.5g; Sodium chloride 50g.

[0043] (2) The oil phase is composed of reactants and porogens, the reactants include monomers and cross-linking agents. Specifically, the monomer is 100 g of butyl methacrylate; the crosslinking agent is 160 g of divinylbenzene and 40 g of diethylene glycol dimethacrylate; the porogen is 100 g of isoamyl alcohol and 200 g of toluene. A total of 600g of oil phase.

[0044] (3) Add the initiator to the oil phase formed in step (2), and stir at room temperature until completely dissolved. The initiator is 1 g of benzoyl peroxide and 2 g of azobisisobutyronitrile.

[0...

Embodiment 3

[0051] The method for preparing high-performance brine extracting lithium adsorbent comprises the following steps:

[0052] (1) In a 2000ml flask equipped with a stirring and temperature control device, add water, dispersant, and sodium chloride, and stir at room temperature until dissolved to form an aqueous phase. Wherein, water 500ml; dispersant is gelatin 2.0g, polyvinyl alcohol 0.5g; Sodium chloride 25g.

[0053] (2) The oil phase is composed of reactants and porogens, the reactants include monomers and cross-linking agents. Specifically, the monomer is 100g of methyl methacrylate, 50g of butyl methacrylate; the crosslinking agent is 200g of divinylbenzene, 50g of allyl methacrylate; the porogen is 150g of isoamyl alcohol, toluene 150g. A total of 700g of oil phase.

[0054] (3) Add the initiator to the oil phase formed in step (2), and stir at room temperature until completely dissolved. The initiator is 2 g of benzoyl peroxide and 2 g of azobisisobutyronitrile.

[...

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Abstract

The invention discloses a method for preparing a high-performance brine lithium-extraction adsorption agent by using an in-situ polymerization and synthesis method. The method comprises the steps of uniformly dispersing active aluminum hydroxide powder in an adsorbent resin duct, and then reacting with a lithium salt solution. The reaction efficiency is increased, and the activity of an adsorbent is ensured. According to the method, by crosslinking and winding of a macromolecular chain in a resin nano pore, the loss of active nano particles is effectively inhibited, and the service life of the adsorbent is ensured. The invention further discloses an adsorbent prepared by using the method for preparing the high-performance brine lithium-extraction adsorption agent.

Description

technical field [0001] The invention relates to the technical field of adsorbents, in particular to a method for preparing an adsorbent for extracting lithium from brine with high performance. The invention also relates to adsorbents prepared by this method. Background technique [0002] Lithium and its compounds are widely used in electronics, metallurgy, chemical industry, medicine, energy and other fields due to their excellent performance. It has an important strategic position in the national economy and national defense construction, and is known as "new energy in the 21st century". [0003] Before the mid-1980s, countries around the world mainly used lithium ore as raw material to produce lithium salt. This method has a long history and a relatively mature process, but its energy consumption is high, which will pollute the environment to a certain extent, and lithium ore resources are increasingly scarce, showing its limitations. On the other hand, lithium resources...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/30C22B26/12
Inventor 石洪雁朱志荣钱洪明李晓红
Owner 西藏容汇锂业科技有限公司
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