Macroporous resin and ion exchange device for adsorbing high-concentration rhenium

An ion exchange device and ion exchange column technology, applied in the ion exchange, ion exchange, anion exchange and other directions of chelate compounds, can solve the problems of low exchange capacity and efficiency, and achieve improved efficiency, increased feed concentration, and cross-linking. low degree of effect

Active Publication Date: 2019-02-15
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the invention is to provide a macroporous resin and ion exchange device for the adsorption of high-concentration rhenium, which is used to solve the problems of low exchange capacity and efficiency of ordinary ion-exchange resins and adsorption devices when dealing with high-concentration rhenium solutions

Method used

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  • Macroporous resin and ion exchange device for adsorbing high-concentration rhenium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035]Adopt the method for suspension polymerization to prepare macroporous divinylbenzene-methyl acrylate copolymer skeleton, and add the pore-forming agent that is made up of isobutanol and toluene by volume ratio of 1:1; Then, adopt iron trichloride as catalyst, adopt chlorine Chloromethylation reaction was carried out between diethyl ether and macroporous divinylbenzene-methyl acrylate copolymer backbone to obtain chlorine spheres with a chlorine content of 20%. Take 100 g of the prepared chlorine spheres, soak them in methanol to swell, add methanol to a volume that is 3 times the volume of the chlorine spheres, and the swelling time is 2 h; Kylation reaction, the reaction temperature is 60 ℃, the reaction time is 10h, to obtain macroporous ion exchange resin.

[0036] The prepared macroporous resin was pretreated, then sulfated and transformed, and the transformed resin was used for adsorption experiments. Control the feed rhenium concentration to 500 mg L -1 , the tem...

Embodiment 2

[0038] Adopt the method for suspension polymerization to prepare macroporous divinylbenzene-methyl acrylate copolymer skeleton, and add the pore-forming agent that is made up of isobutanol and toluene by volume ratio of 1:1; Then, adopt iron trichloride as catalyst, adopt chlorine Chloromethylation reaction was carried out between ether and macroporous divinylbenzene-methyl acrylate copolymer backbone to obtain chlorine spheres with a chlorine content of 22%. Take 100 g of the prepared chlorine spheres, soak them in methanol to swell, add methanol to 4 times the volume of the chlorine spheres, and the swelling time is 5 h; Kylation reaction, the reaction temperature is 70 ℃, the reaction time is 10h, to obtain macroporous ion exchange resin.

[0039] The prepared macroporous resin was pretreated, then sulfated and transformed, and the transformed resin was used for adsorption experiments. Control the feed rhenium concentration to 500 mg L -1 , the temperature is 25 ℃, the fl...

Embodiment 3

[0041] Adopt the method for suspension polymerization to prepare macroporous divinylbenzene-methyl acrylate copolymer skeleton, and add the pore-forming agent that is made up of isobutanol and toluene by volume ratio of 1:1; Then, adopt iron trichloride as catalyst, adopt chlorine The chloromethylation reaction between diethyl ether and macroporous divinylbenzene-methyl acrylate copolymer backbone resulted in chlorine spheres with a chlorine content of 21%. Take 100 g of the prepared chlorine spheres, soak them in methanol to swell, add methanol to a volume 3 times the volume of the chlorine spheres, and the swelling time is 10 h; Kylation reaction, the reaction temperature is 80 ℃, the reaction time is 15h, to obtain macroporous ion exchange resin.

[0042] The prepared macroporous resin was pretreated, then sulfated and transformed, and the transformed resin was used for adsorption experiments. Control the feed rhenium concentration to 500 mg L -1 , the temperature is 25 ℃...

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Abstract

The invention discloses macroporous resin for adsorbing high-concentration rhenium. The macroporous resin for adsorbing the high-concentration rhenium is prepared by the following preparation steps: preparing a macroporous divinyl benzene-methyl acrylate copolymer skeleton by adopting a suspension polymerization method, and then performing chloromethylation on small copolymer spheres; soaking theprepared chlorine spheres in methyl alcohol for swelling after the chlorine spheres are washed and dried; and adding diaminopro to perform amination reaction to obtain macroporous weak alkaline ion exchange resin. The invention also provides a columnar ion exchange device using the resin; a set of heat exchange component is arranged on the periphery of an ion exchange column, so that the temperature of the ion exchange column is reduced to promote the adsorption of rhenium. According to the ion exchange resin and the device provided by the invention, the problems of low adsorption rate and lowexchangeable capacity of the common ion exchange resin under high rhenium concentration and common operation conditions are solved; the rhenium ion exchange efficiency is greatly improved; and high-efficiency enrichment and recycling of the rhenium are promoted.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy and rare metal recycling, and in particular relates to a macroporous resin and an ion exchange device for high-concentration rhenium adsorption. Background technique [0002] Rhenium is an important strategic rare metal with special properties such as high melting point, creep resistance, high strength, corrosion resistance, and wear resistance. It is widely used in national economic fields such as aerospace, national defense, electronics industry, and chemical industry. The abundance of rhenium in nature is extremely low, and there are very few independent minerals, mostly associated with porphyry copper ore and molybdenite. Due to the scarcity and special distribution of its resources, the separation and extraction of rhenium are difficult, so the output of rhenium has been low and expensive for a long time. Rhenium is often associated with copper-molybdenum ore and enters the smelting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F8/32C08F8/24C08F212/36C08F220/14C08J9/28B01J20/26B01D15/36
CPCB01D15/361B01J20/26C08F8/24C08F8/32C08F212/36C08J9/28C08J2201/0502C08J2325/00C08F220/14
Inventor 郑国渠张惠斌曹华珍
Owner ZHEJIANG UNIV OF TECH
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