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Oxygen-free high-purity arsenic powder preparing method

A high-purity arsenic and zirconia technology, applied in grain processing and other directions, can solve the problems that arsenic powder cannot meet high-purity requirements, destroy products, etc., and achieve the effects of low oxygen content, high recovery rate and high purity

Inactive Publication Date: 2020-08-28
广东先导微电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Due to the limitations of equipment materials in conventional powder making methods, arsenic will interact with grinding materials, resulting in the prepared arsenic powder not meeting the high purity requirements
At the same time, high-purity arsenic is extremely active when it is crushed into powder, and it will react violently when it comes into contact with oxygen and cause combustion, thus destroying the product

Method used

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  • Oxygen-free high-purity arsenic powder preparing method

Examples

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Embodiment 1

[0021] This example is an example of the preparation method of the oxygen-free high-purity arsenic powder of the present invention. The preparation method of the present embodiment oxygen-free high-purity arsenic powder according to figure 1 The process is carried out, specifically: transfer a bottle of 1.50 kg arsenic block (purity: 7N) with a particle size of 3-15 mm into a glove box filled with inert gas through a transition chamber, and the jaw crusher in the glove box The gap between the jaw plates is adjusted to 1 mm, and the frequency is 5 Hz, then the above-mentioned arsenic block is added to the jaw crusher at a constant speed for crushing, and 1.49 kg of small arsenic particles are collected, and then these small arsenic particles are transferred into the glove box. In a ball mill barrel (using 3 kg of zirconia balls with a diameter of 15 mm as the grinding body), ball mill at a speed of 40 r / min for 1 hour to obtain 1.48 kg of arsenic powder, which is packed with an...

Embodiment 2

[0023] This example is an example of the preparation method of the oxygen-free high-purity arsenic powder of the present invention. The preparation method of the present embodiment oxygen-free high-purity arsenic powder according to figure 1 The process is carried out, specifically: transfer a bottle of 3.00kg arsenic block (purity: 7N) with a particle size of 3-15mm into a glove box filled with inert gas through a transition chamber, and the jaw crusher in the glove box The gap between the jaw plates was adjusted to 5 mm, and the frequency was 5 Hz. Then, the above-mentioned arsenic block was fed into the jaw crusher at a constant speed for crushing, and 2.99 kg of small arsenic particles were collected, and then these small arsenic particles were transferred into the glove box. In a ball mill barrel (with 1.5 kg of zirconia balls with a diameter of 5 mm as the grinding body), ball mill at a speed of 80 r / min for 2 hours to obtain 2.98 kg of arsenic powder, which is packed wi...

Embodiment 3

[0025] This example is an example of the preparation method of the oxygen-free high-purity arsenic powder of the present invention. The preparation method of the present embodiment oxygen-free high-purity arsenic powder according to figure 1 The process is carried out, specifically: transfer a bottle of 3.00kg arsenic block (purity: 7N) with a particle size of 3-15mm into a glove box filled with inert gas through a transition chamber, and the jaw crusher in the glove box The gap between the jaw plates was adjusted to 5 mm, and the frequency was 5 Hz. Then, the above-mentioned arsenic block was fed into the jaw crusher at a constant speed for crushing, and 2.99 kg of small arsenic particles were collected, and then these small arsenic particles were transferred into the glove box. In a ball mill bucket (using 3 kg of zirconia balls with a diameter of 5 mm as the grinding body), ball mill at a speed of 80 r / min for 0.5 h to obtain 2.98 kg of arsenic powder, which is packed with ...

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Abstract

The invention discloses an oxygen-free high-purity arsenic powder preparing method, and belongs to the field of arsenic materials. Under protection of protective gas, zirconium oxide balls serve as agrinding body for ball grinding of a high-purity arsenic block, then, uniform arsenic powder with the grain size meeting the metal powder synthesis reaction requirement can be obtained, and screeningdoes not need to be conducted. The prepared arsenic powder is high in purity and low in oxygen content, the residual quantity of grinding body materials in the arsenic powder is low, and the recyclingrate is high. The preparing method is simple and high in efficiency, and large-scale production is easy.

Description

technical field [0001] The invention belongs to the field of arsenic materials and relates to a preparation method of oxygen-free high-purity arsenic powder. Background technique [0002] Arsenic selenide (H 16 As 2 Se 3 ), cobalt arsenide (AsCoH 2 ), cadmium arsenide (As 2 CD 3 h 2 ) and other arsenic compounds are widely used in the fields of infrared optics, semiconductors, and thin film materials. These arsenic compounds are generally synthesized by a green powder synthesis method, wherein the direct combination of arsenic selenide with arsenic powder and selenium powder is a better synthetic method at present, but the used arsenic powder must be of higher purity and smaller particle size ( ≤200 mesh). [0003] Due to the limitations of equipment materials in conventional powder making methods, arsenic will interact with grinding materials, resulting in the prepared arsenic powder not meeting the high purity requirements. At the same time, high-purity arsenic is...

Claims

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Application Information

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IPC IPC(8): B02C21/00B02C23/24
CPCB02C21/00B02C23/24
Inventor 曾小东刘留
Owner 广东先导微电子科技有限公司
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