Preparation method of high-purity dysprosium oxide

A dysprosium oxide, high-purity technology, applied in chemical instruments and methods, rare earth metal oxides/hydroxides, inorganic chemistry, etc., can solve problems such as hidden environmental safety hazards, low separation rate and efficiency, and increased production costs. The effect of simplified process, simple operation and low equipment investment

Inactive Publication Date: 2017-05-31
SHANGHAI JINGCHUN BIOCHEM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology generally has shortcomings and defects such as long process flow, complicated process, low separation rate and efficiency
In particular, a large amount of highly toxic extractants such as P507 are used in the process, which not only greatly increases production costs, but also brings greater environmental safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of high-purity dysprosium oxide, concrete steps are:

[0020] The first step: put 250g of 99.5% dysprosium oxide raw material into 1500mL of deionized water with a stirring device, and slowly add 300mL of a refined preparation with a mass concentration of 5% under continuous stirring (electronic grade nitric acid is made into a solution with deionized water ), the resulting mixture was stirred at room temperature, the speed was controlled at 1200rpm, and the stirring time was 6h;

[0021] The second step: transfer the mixture obtained in the first step to a container, and perform ultrasonic irradiation and oscillation, the ultrasonic frequency is 53KHz, the irradiation oscillation time is 8h, and the temperature is controlled at 30°C to 50°C;

[0022] The third step: transfer the mixture obtained in the second step to a kettle with a stirring device, stir at room temperature for 3 hours at a stirring speed of 1800 rpm, and filter under reduc...

Embodiment 2

[0025] A kind of preparation method of high-purity dysprosium oxide, concrete steps are:

[0026] The first step: put 600g of 99.5% dysprosium oxide raw material into 1800mL of deionized water with a stirring device, and slowly add 180mL of a refined preparation with a mass concentration of 10% under continuous stirring (electronic grade nitric acid is made into a solution with deionized water ), the resulting mixture was stirred at room temperature, the speed was controlled at 1800rpm, and the stirring time was 9h;

[0027] The second step: transfer the mixture obtained in the first step to a container, and perform ultrasonic irradiation and oscillation, the ultrasonic frequency is 35KHz, the irradiation oscillation time is 10h, and the temperature is controlled at 30°C to 50°C;

[0028] The third step: transfer the mixture obtained in the second step to a kettle with a stirring device, stir at room temperature for 5 hours at a stirring speed of 1200 rpm, and filter under red...

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PUM

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Abstract

The invention discloses a preparation method of high-purity dysprosium oxide. The preparation method is characterized in that dysprosium oxide raw material is added into deionized water, a refining agent is added, the raw materials are stirred at room temperature; the mixture is transferred into a container and subjected to ultrasonic irradiation oscillation; the mixture is transferred into a kettle with a stirring device, stirred for 3-5 hours at room temperature and then subjected to reduced pressure filtration; the obtained solid is put into deionized water and washed to be neutral in pH and subjected to reduced pressure suction filtration and vacuum drying at 150-180 DEG C to obtain a dysprosium oxide pure product with the purity of 99.99% or more. According to the method disclosed by the invention, the high-purity dysprosium oxide pure product with the purity of 99.99% or more can be directly prepared by deeply purifying dysprosium oxide raw material with the purity of 99.5%, the operation steps are simple and the method is convenient to operate, the equipment investment is low, and a new way is provided for preparing the high-purity dysprosium oxide product.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic materials, and in particular relates to a method for preparing high-purity dysprosium oxide. The purity of dysprosium oxide prepared by the method can reach more than 99.99%. Background technique [0002] Dysprosium oxide is a white powder, slightly hygroscopic, and can absorb moisture and carbon dioxide in the air. Dysprosium oxide is an important rare earth material with a wide range of uses. In addition to being used as control rods for nuclear reactors in the atomic energy industry, it can also be used for metal halide lamps, magneto-optical memory materials, glass, NdFeB permanent magnet additives, etc. Dysprosium oxide is an important raw material for producing dysprosium metal. Dysprosium is a strategic metal with extremely important uses and is an important part of infrared generators and laser materials. With the development of contemporary high-tech new materials, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F17/00
CPCC01F17/206C01P2006/80
Inventor 凌青刘玉强
Owner SHANGHAI JINGCHUN BIOCHEM TECH CO LTD
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