Method for preparing high-purity beryllium from industrial beryllium

An industrial, high-purity technology, applied in the direction of improving process efficiency, can solve problems such as adverse environmental impact, complex preparation process lines for high-purity beryllium, secondary pollution of intermediate products, etc.

Active Publication Date: 2021-05-18
东方电气集团科学技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some enterprises use physical purification to prepare high-purity beryllium, and the product grade can generally meet 3N, the highest can reach 4N, but it can hardly meet the requirements of 5N beryllium products; some enterprises use chemical methods to prepare high-purity beryllium, and the product grade can meet 5N requirements. However, it brings adverse effects on the environment during the production process. Therefore, relevant environmental impact measures should be put forward in the production process of 5N ultra-high-purity beryllium prepared by chemical purification;
[0005] 2. The production process of high-purity beryllium is complex. The preparation process uses a combination of chemical and physical methods. There are many intermediate links. During the preparation process, it is easy to cause secondary pollution of intermediate products, and intermediate products also need anti-virus treatment;

Method used

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  • Method for preparing high-purity beryllium from industrial beryllium
  • Method for preparing high-purity beryllium from industrial beryllium
  • Method for preparing high-purity beryllium from industrial beryllium

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] Such as figure 1 Shown: a method for preparing high-purity beryllium with industrial beryllium, under the protection of inert gas, comprises the following steps:

[0072] A. Alkali washing: put industrial beryllium into 10% sodium hydroxide aqueous solution, stir until completely dissolved, and obtain sodium beryllium acid solution;

[0073] B. primary filtration: the gained sodium beryllium acid solution is filtered to remove impurities such as Si, B and Cu therein (this part of the impurity is an impurity that does not react with OH-), to obtain a primary filtrate and a primary filter residue;

[0074] C. pickling: passing the gained primary filtrate into a 10% hydrochloric acid solution for reaction to obtain a beryllium chloride solution;

[0075] D. Precipitation: pass into excessive weak base in the gained beryllium chloride solution, generate the beryllium hydroxide solution with white precipitate;

[0076] E. Secondary filtration: filter the obtained beryllium...

Embodiment 2

[0083] Based on embodiment 1, the difference of this embodiment is:

[0084] In step A, the concentration of aqueous sodium hydroxide solution is 20%;

[0085] In step C, the concentration of the hydrochloric acid solution is 20%;

[0086] In step F, place the obtained secondary filter residue at a constant temperature of 130°C and dry to obtain powdered beryllium hydroxide;

[0087] In step G, set the voltage to 3V.

Embodiment 1-2

[0089] Based on Embodiment 1-2, the difference of this embodiment is:

[0090] In step A, the concentration of aqueous sodium hydroxide solution is 13%;

[0091] In step C, the concentration of the hydrochloric acid solution is 15%;

[0092] In step F, place the obtained secondary filter residue at a constant temperature of 110°C and dry to obtain powdered beryllium hydroxide;

[0093] In step G, set the voltage to 2.9V.

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Abstract

The invention discloses a method for preparing high-purity beryllium from industrial beryllium, and belongs to the technical field of metallurgical material preparation processes. According to the method for preparing the high-purity beryllium from the industrial beryllium, industrial beryllium is used as a raw material, alkali washing, primary filtration, acid pickling, precipitation, secondary filtration, drying, melting electrolysis and aftertreatment are carried out under the protection of inert gas, and preparation of the high-purity beryllium is achieved; and meanwhile, according to the preparation method, tail gas, waste residues and waste liquid generated in the working procedures are subjected to recycling or environment-friendly treatment, waste recycling is achieved, the maximum utilization rate of raw materials is increased, and the environment-friendly problem is effectively solved.

Description

technical field [0001] The invention relates to a method for preparing high-purity beryllium, in particular to a method for preparing high-purity beryllium from industrial beryllium, which belongs to the technical field of metallurgical material preparation technology. Background technique [0002] The preparation of high-purity metal materials generally uses industrial-grade pure base metals or high-purity metal compounds as raw materials, and is prepared by corresponding physical and / or chemical methods. The purity of metal materials is a key factor affecting material performance. With the development of technologies in key fields such as aviation, aerospace, nuclear industry, military industry, and semiconductors, the application and market demand of high-purity metal materials continue to grow. A variety of high-purity metal materials have been used as high-tech strategic materials, and their purity Make higher demands. The preparation, characteristics and application o...

Claims

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Application Information

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IPC IPC(8): C22B35/00C25C3/34
CPCC22B35/00C25C3/34Y02P10/20
Inventor 袁小武李宏卢苇黎亚文杨武勇雷聪
Owner 东方电气集团科学技术研究院有限公司
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