Preparation process of beryllium oxide

A preparation process, a technology of beryllium oxide, applied in the direction of process efficiency improvement, beryllium oxide/hydroxide, etc., can solve problems such as high energy consumption and high pollution, achieve the effect of improving purity and overcoming high energy consumption and high pollution problems

Pending Publication Date: 2018-12-07
峨眉山市中山新材料科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a production process for beryllium oxide, which can im...

Method used

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Experimental program
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Embodiment Construction

[0015] The preparation technology of the beryllium oxide provided by the present embodiment comprises the following steps:

[0016] (1) Raw material pretreatment: choose chrysoberyl ore with a beryllium content of 8-12% as raw material, at first the raw material is crushed to 180-220 mesh powder, and 100 parts by mass of beryl fine powder is added Divide into 80 parts of sodium fluorosilicate, 20 parts of limestone and 12 parts of water, and stir evenly. Finally, the mixture is only made into a cake shape with a diameter of 10-12 cm and a thickness of 3-5 cm, and the cake-shaped block is baked. Dry;

[0017] (2) Block calcining: calcining the dried cake-shaped block at a temperature of 700-740°C for 2.0-2.5 hours;

[0018] (3) Block material regeneration treatment: crush the calcined block material to powder particles with a mesh size of 180-220 mesh, add 60 parts of water to 10 parts by mass of the powder material, and stir and heat, the heating temperature is 100 ℃, the ti...

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Abstract

The invention discloses a preparation process of beryllium oxide. The preparation process of the beryllium oxide comprises the steps of (1) raw material pretreatment, (2) block calcining, (3) block regeneration, (4) hydrogen and oxygen treatment, (5) acid treatment of powder and (6) preparation of beryllium oxide. The beryllium recovery rate of beryllium in ores can be increased above 93%; the constant-temperature calcining, not the high-temperature smelting is adopted, so that the problems of high energy consumption and high pollution can be overcome; and the purity of beryllium hydroxide canbe improved through repeated washing, so that the preparation of beryllium oxide is facilitated.

Description

technical field [0001] The invention relates to a preparation process of beryllium oxide, belonging to the technical field of beryllium oxide production. Background technique [0002] With the rapid development of science and technology, beryllium metals, alloys and oxides have been widely used in atomic energy, aerospace, electronics, petrochemical, ceramics and other fields. Beryllium oxide is a basic raw material and a product with high added value. [0003] The production of beryllium oxide by the fluoride method was invented in the United States. The production of beryllium oxide by the fluoride method mainly includes grinding and calcination. At present, the sulfuric acid method is used to produce beryllium oxide at home and abroad. This method not only requires high-temperature melting, which wastes a lot of energy, but also produces waste water that is not easy to recycle and pollutes the environment. More importantly, the recovery rate of beryllium in the product...

Claims

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Application Information

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IPC IPC(8): C22B1/02C22B3/12C22B3/44C01F3/02C22B35/00
CPCC01F3/02C22B1/02C22B3/12C22B3/44C22B35/00Y02P10/20
Inventor 钟连洪曾学萍钟敏
Owner 峨眉山市中山新材料科技有限公司
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