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Preparation method of metal ferricyanide adsorbent particles for liquid rubidium and cesium resource extraction

A technology of adsorbent and metal iron, which is applied in the direction of alkali metal compounds, alkali metal oxides/hydroxides, chemical instruments and methods, etc., can solve the problems of poor water absorption of polyacrylonitrile matrix, reduction of adsorbent adsorption capacity, and complicated preparation process and other problems, to achieve the effect of good water permeability, fast adsorption process and simple preparation process

Active Publication Date: 2021-10-19
QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese patent CN110090618A discloses a Prussian blue / graded porous carbon composite adsorbent and its preparation method. The Prussian blue / graded porous carbon composite adsorbent uses biomass-based graded porous carbon as a carrier, and utilizes the heteroatoms on the surface of the graded porous carbon to anchor Determine Fe 3+ , while inhibiting Fe in ferric chloride by oxalic acid 3+ release of Prussian blue, and then control the nucleation and growth rate of Prussian blue, and finally grow Prussian blue microcrystals in situ on the surface of hierarchical porous carbon, and prepare nanoscale, highly dispersed Prussian blue / hierarchical porous carbon composite adsorbent, but porous carbon Low loading by means of surface crystalline Prussian blue crystallites
Chinese patent CN103831090A discloses a preparation method of particles, which dissolves metal ferricyanide and polyacrylonitrile in an organic solvent, and then prepares composite particles of polyacrylonitrile / metal ferricyanide by spraying. This method uses a large amount of organic solvent, and the polyacrylonitrile matrix has poor water absorption, which reduces the adsorption capacity of the adsorbent
The Prussian blue loading material prepared by the above method has a complicated preparation process, and the loading capacity still needs to be increased

Method used

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  • Preparation method of metal ferricyanide adsorbent particles for liquid rubidium and cesium resource extraction
  • Preparation method of metal ferricyanide adsorbent particles for liquid rubidium and cesium resource extraction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] A metal feridanide adsorbent particles extracted for liquid 铷 铷 铷 资 附:: 方式:

[0072] In the first step, a polyvinyl alcohol having an alcohol is dissolved in water, and 10% by weight of the aqueous solution of polyvinyl alcohol is prepared.

[0073]In the second step, the polythyl alcohol aqueous solution and the Prussian blue adaptive powder are mixed in mass than 5: 1 ratio, and the three-roll mill is mixed and uniform.

[0074] In the third step, a quantity of the first crosslinking agent solution is added in the mixture obtained in step 2, wherein the mixture is from 1: 3, and the composition of the first crosslinking agent is comprised. 3 wt% boric acid, 1 wt% boron sand, 1 wt% aluminum chloride, 1 wt% calcium chloride, after mechanical agitation, forming a coagulation crosslink product.

[0075] In the fourth step, the granulation of the coagulation cross-linking product of the third step is extruded, the particle size is 2 mm, and drying, the drying temperature is 60...

Embodiment 1

[0079] Example 1 Prussian blue adsorbent particles, finished particle adsorbent content 66.7% (after deduction of moisture), water content 45.6%, Shao A hardness 70. It can be used in the adsorption of 铷 铷 铷 铷 铷 附 附 附 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用 使用

[0080] figure 2 It is a SEM diagram of the Pusher Blue Adaptive Particle Facing Safety, which is prepared by Example 1. The scanning electron microscope is mainly able to see (1) Prussine blue microcrystalline form, the particles are small, while less polymer, the adhesion of the polymer is more Strong, the amount of adsorbent in the particles is large; (3) a large amount of hollow porous structure, adsorbing particles are well water.

Embodiment 2

[0082] A metal feridanide adsorbent particles extracted for liquid 铷 铷 铷 资 附:: 方式:

[0083] In the first step, a polyvinyl alcohol having an alcohol is dissolved in water, and 10% by weight of solution was prepared.

[0084] Step 2, the average molecular weight of 1250,000 polyacrylate is dissolved in water, and a solution having a concentration of 4 wt% is prepared.

[0085] Step 3, the aqueous solution of the polymer prepared by step 2 will be mixed in mass than 10: 1, and the high viscosity mixing paddle is mixed and uniform, resulting in a high viscosity polymer mixed solution.

[0086] In the fourth step, the Prussian blue powder is added to the high viscosity of the high viscosity of step 3, and mixed, stirred or ground to mix evenly.

[0087] Step 5, a quantity of the first crosslinking agent aqueous solution was added to the mixture obtained in step 4, wherein the mixture and the first crosslinking agent solution were 1: 3, and the first crosslinking agent aqueous solution...

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Abstract

The invention discloses a preparation method of metal organic framework compound adsorbent particles for extracting rubidium and cesium resources from salt lake brine, seawater and underground water. The adsorbent particles are prepared by taking a water-absorbing polymer as a carrier, adding transition metal ferrous ferrocyanide, potassium cobalt cyanide, potassium nickel ferrocyanide, potassium titanium ferrocyanide, potassium copper ferrocyanide, potassium cadmium ferrocyanide or other metal organic framework compound adsorbents in a high loading amount, and carrying out secondary cross-linking. The preparation process is simple and is suitable for industrial production. The prepared adsorbent particles have the characteristics of high elasticity, porosity, high water absorption, good permeability and the like. A resin matrix is resistant to strong acid, strong alkali and high-salt environments, the polyhydroxy structure on the surface of the matrix can effectively adsorb adsorbent particles, the solution loss rate is effectively reduced, the method can be applied to extraction of rubidium and cesium elements in salt lake raw brine, old brine, seawater and underground water resources, and meanwhile the high-strength corrosion-resistant matrix is suitable for an industrial adsorption column process.

Description

Technical field [0001] The present invention belongs to the technical field of chemical material, and more particularly to a method for preparing a metal ferric cyanide adsorbent particle for liquid 铷 铷 resource extraction. Background technique [0002] 铷, and its compounds have excellent photoelectric properties to materials and energy. As an important rare valuables, there is an important significance in the economy and strategy. At present, the industrial production of cesium industrial production is mainly based on mining solid ore, but its extraction process is more complicated and energy consumption. The salt lake brine or potassium salt plant in Qinghai, Tibet, etc., lithium tail fluid, drilling ground water, etc., has a high concentration value. At present, there are mainly liquid 铷, resource extracting lithium in salt lake, and the technique of lithium is mainly medium solvent extraction method, precipitation method and adsorption method. The precipitation method is main...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/28B01J20/30C22B26/10C22B3/24
CPCB01J20/267B01J20/0274B01J20/0229B01J20/28016C22B26/10C22B3/24
Inventor 董明哲李军刘海宁叶秀深郭敏吴志坚
Owner QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI
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