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Extracting method of high-purity ammonium rhenate

An extraction method and technology of ammonium rhenate, applied in the field of extraction of high-purity ammonium rhenate, can solve the problems of limited rhenium extraction/purification process effect, difficulty in efficiently preparing high-purity ammonium rhenate, low efficiency, etc., and achieve good adsorption The ability to enrich rhenium, easy to popularize and use in industrialization, and easy to operate

Active Publication Date: 2020-06-02
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the existing rhenium extraction / purification process has limited effects, low efficiency or low purity, and is difficult to efficiently prepare high-purity ammonium rhenate, the invention provides a method for extracting high-purity ammonium rhenate

Method used

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  • Extracting method of high-purity ammonium rhenate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of anion exchange resin:

[0041] a1) Place the lactose powder with an average particle size of 1 mm in methyl acrylate for immersion and adsorption for 10 minutes, and filter out the lactose powder after the immersion and adsorption are saturated;

[0042] a2) Add divinylbenzene to benzene methane to prepare a 16.5wt% reaction solution, add cumene hydroperoxide to the reaction solution, the concentration of cumene hydroperoxide in the reaction solution is 0.10wt%, and every 100mL 5.5 g of lactose powder adsorbed with methyl acrylate was added to the reaction solution, and reacted under stirring conditions, and filtered to obtain polymer beads with a crosslinking degree of 5.5%.

[0043] a3) immerse the polymer ball in water to dissolve the lactose skeleton, then add ferric chloride and chloroethyl ether to carry out chloromethylation reaction, and obtain a chlorinated ball with a chlorine content of 17wt%;

[0044] a4) Dip the chlorinated pellets into 3 ti...

Embodiment 2

[0046] Preparation of anion exchange resin:

[0047] a1) Place the lactose powder with an average particle size of 3 mm in methyl acrylate for immersion and adsorption for 3 minutes, and filter out the lactose powder after the immersion and adsorption are saturated;

[0048] a2) Add divinylbenzene to benzene methane to prepare 18wt% reaction solution, add cumene hydroperoxide to the reaction solution, the concentration of cumene hydroperoxide in the reaction solution is 0.10wt%, and every 100mL reaction Add 6 g of lactose powder adsorbed with methyl acrylate to the solution, place it under ultrasonic vibration for reaction, and filter to obtain polymer beads with a crosslinking degree of 5.0%.

[0049] a3) Put the polymer pellets in water and soak to dissolve the lactose skeleton, then add ferric chloride and chloroethyl ether to carry out chloromethylation reaction to obtain chlorinated pellets with a chlorine content of 18wt%;

[0050] a4) Dip the chlorinated pellets into 4...

Embodiment 3

[0052] Preparation of anion exchange resin:

[0053] a1) Place the lactose powder with an average particle size of 1.5 mm in methyl acrylate for immersion and adsorption for 5 minutes, and filter out the lactose powder after the immersion and adsorption are saturated;

[0054] a2) Divinylbenzene is added to benzene methane to prepare a 10wt% reaction solution, and cumene hydroperoxide is added to the reaction solution. The concentration of cumene hydroperoxide in the reaction solution is 0.05wt%, and every 100mL of reaction 3 g of lactose powder adsorbed with methyl acrylate was added to the solution, and reacted under stirring conditions, and filtered to obtain polymer beads with a crosslinking degree of 4.5%.

[0055] a3) immerse the polymer pellets in water to dissolve the lactose skeleton, then add ferric chloride and chloroethyl ether to carry out chloromethylation reaction, and obtain chlorinated pellets with a chlorine content of 15wt%;

[0056] a4) Dip the chlorinated...

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Abstract

The invention relates to the technical field of recycling of hydrometallurgical process and rare and precious metal recycling, in particular to an extracting method of high-purity ammonium rhenate. The method comprises the following steps of firstly, coarse ammonium rhenate re-dissolving, wherein coarse ammonium rhenate is dissolved in dilute sulphuric acid, and after filtering, a rhenium solutionis prepared; secondly, ion exchange, wherein negative ion exchange resin is used for carrying out ion exchange on the rhenium solution, and after desorption, a coarse extracted solution is obtained;and thirdly, impurity removal for crystallization, wherein positive ion exchange resin is used for carrying out further ion exchange on the coarse extracted solution, after positive ion impurities areremoved, crystallization is carried out, so that high-purity ammonium rhenate crystals are obtained. The method is high in extraction efficiency, and easy to operate, the extracted ammonium rhenate is high in purity, metal ion impurities can be effectively removed, the equipment requirement is low, and the method is easily popularized and industrially used.

Description

technical field [0001] The invention relates to the technical field of chemical hydrometallurgy and rare precious metal recycling, in particular to a method for extracting high-purity ammonium rhenate. 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 process with the concentrate. ...

Claims

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Application Information

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IPC IPC(8): C22B61/00C22B3/42C22B3/22
CPCC22B61/00C22B3/42C22B3/22Y02P10/20
Inventor 郑国渠张惠斌曹华珍
Owner ZHEJIANG UNIV OF TECH
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