Intelligently-controlled high-purity ultra-fine aluminum powder atomization classification device specially used for aerospace, and technology thereof

Abstract

The invention discloses an intelligently-controlled high-purity ultra-fine aluminum powder atomization classification device specially used for aerospace. The device comprises an atomization classification chamber that is in a 'V' shape; a cooling cavity is connected at one side of the atomization classification chamber, and a fine powder outlet is formed in the other side of the atomization classification chamber; a crude powder outlet is formed in the bottom of the middle of the atomization classification chamber; a nitrogen fluidization air inlet is also formed in one side of the bottom of the atomization classification chamber; the nitrogen fluidization air inlet is close to the cooling cavity; a nitrogen fluidization air outlet is formed in the other side of the bottom of the atomization classification chamber; the nitrogen fluidization air outlet is formed under the fine powder outlet; and the crude powder outlet is formed between the nitrogen fluidization air inlet and the nitrogen fluidization air outlet. The high-purity ultra-fine aluminum powder atomization classification intelligent control device has the beneficial effect that ultra-fine spherical aluminum powder is continuously, closely and effectively classified in the atomization process, so that the aluminum powder which is specially used for the aerospace and has high purity and high ultra-fine powder content can be produced.

Description

technical field [0001] The invention relates to the field of aluminum powder atomization, in particular to an aluminum powder atomization and classification device and process. Background technique [0002] The existing foreign laminar flow atomization technology has a high yield of fine powder, but because the liquid flow is too fine, it is easy to block the nozzle and it is not easy to carry out industrial production; the ultrasonic pneumatic atomization technology, the particle size D50 of aluminum powder when atomized with nitrogen gas is 30 microns, the particle size distribution is small and cannot meet the ultra-fine requirements; [0003] The existing domestic aluminum powder atomization device is a non-nitrogen atomization device, which is easy to explode and has a low fine powder output rate. It cannot continuously produce high-end products, and the exhaust gas emission problem in the production process cannot meet the standards, so it is difficult to achieve ultra...

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Problems solved by technology

[0002] The existing foreign laminar flow atomization technology has a high yield of fine powder, but because the liquid flow is too fine, it is easy to block the nozzle and it is not easy to carry out industrial production; the ultrasonic pneumatic atomization technology, the particle size D50 of aluminum powder when atomized with nitrogen gas is 30 microns, the particle size distribution is small and cannot meet the ultra-fine requirements;

[0003] The existing domestic aluminum powder atomization device is a non-nitrogen atomization device, which is easy to explode and has a low fine powder output rate. It cannot continuously produce high-end products, and the exhaust gas emission problem in the production process cannot meet the standards, so it is difficult to achieve ultra-fine spherical shape. Large-scale production of atomized aluminum powder

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