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A kind of production equipment and production method of high-purity nano metal superfine powder

A nano-metal and production equipment technology, which is applied in the field of high-purity nano-metal superfine powder production equipment, can solve problems such as high cost, high production cost, and raw material restrictions, and achieve the effects of wide application range, low cost, and short production process

Inactive Publication Date: 2011-11-30
XIAN HUIWEI NANO METAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the use of nanomaterials as raw materials and hydrogen as a reducing gas, the above three existing production methods are high-cost production methods
[0005] In summary, the existing methods for producing nano-metal ultrafine powder must use nano-materials as raw materials and hydrogen as a reducing gas, so not only the raw materials are limited, but also the production cost is high

Method used

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  • A kind of production equipment and production method of high-purity nano metal superfine powder
  • A kind of production equipment and production method of high-purity nano metal superfine powder
  • A kind of production equipment and production method of high-purity nano metal superfine powder

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Effect test

Embodiment 1

[0059] In this embodiment, the raw material to be processed is molybdenum wire. Therefore, in the present embodiment, the high-purity nano-metal ultrafine powder production equipment used includes the raw material delivery and pretreatment device one, the supersonic nozzle 3 arranged inside the raw material delivery and pretreatment device one, the feed inlet and the raw material The high-temperature liquid mist combustion fast reducer 4 connected to the discharge port of the conveying and pretreatment device 1, the inert gas rapid condensation device 5 connected to the discharge port of the high-temperature liquid mist combustion fast reducer 4, and the inert gas The multi-stage metal ultrafine powder classification device connected to the discharge port of the gas rapid condensation device 5 and a plurality of devices are respectively arranged below the multi-stage metal ultrafine powder classification device and are connected to the discharge port below the multi-stage metal...

Embodiment 2

[0075] In this embodiment, the raw material to be processed is selenium (Se) powder with an average particle diameter of 60 μm, so it is different from the high-purity nano metal ultrafine powder production equipment in Example 1: the raw material delivery and pretreatment device 1 used It is the raw material conveying and pretreatment device 2 and uses hydrocarbon fuel as the gas source (that is, under the action of hydrocarbon fuel) to carry out powder feeding. The powder feeding device is powder feeder 1 and the powder feeder 1 is equipped with electronic lighter. In actual use, the ignited selenium powder can also be sent to the high-temperature liquid mist combustion fast reducer 4 by using the powder feeding inclined plate as a powder feeding device. The front part of the high-temperature liquid mist combustion fast reducer 4 is provided with a powder feeding channel 4-9 connected to the discharge port of the powder feeder 1 .

[0076] In this embodiment, the difference...

Embodiment 3

[0078] In this embodiment, the raw materials to be processed are copper (Cu) wire with a diameter of 2mm and indium (In) powder, gallium (Ga) powder and selenium (Se) powder with an average particle size of 60 μm, and the atomic The molar ratio is 1:0.7-1:0.1-0.3:2, and the molar content of Se can be adjusted within the range of 1.3-2.5 according to specific needs during actual processing and preparation. Therefore, in this embodiment, the difference from the high-purity nano metal superfine powder production equipment in embodiment 1 is that the raw material conveying and pretreatment device 1 used is to convey and pretreat the metal wire and metal powder that are input at the same time Raw material conveying and pretreatment device III. The raw material conveying and pretreatment device three includes an arc torch with a wire input device capable of performing arc melting on simultaneously input metal wire and metal powder, and a powder feeding device is provided at the feed...

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Abstract

The invention discloses a production equipment and production method of high-purity nano metal ultrafine powder. The production equipment includes a raw material conveying and pretreatment device, a supersonic nozzle, a high-temperature liquid mist combustion fast reducer, an inert gas fast condensation device, a multi-stage A metal ultrafine powder classification device and a powder collection device, and the interior of each device is connected in turn to form a production circulation channel for producing high-purity nano metal ultrafine powder. The tail of the channel is connected with an induced draft fan that communicates with the inside; the production method includes steps: 1. Raw material transportation and pretreatment; 2. Metal oxide atomization and transportation; 3. High temperature rapid reduction reaction; 4. Rapid condensation; , and then form a high-temperature reducing atmosphere with hydrocarbon fuel and high-pressure oxygen-enriched, and finally produce spherical nano-metal ultrafine powder. The invention has reasonable design, wide range of applicable raw materials, short production process and high efficiency, and can realize continuous industrial production.

Description

technical field [0001] The invention belongs to the technical field of nano-metal powder material preparation, and in particular relates to a production equipment and production method of high-purity nano-metal superfine powder. Background technique [0002] In recent years, with the rapid development of the field of new materials, the demand for nano-metal superfine powders has increased dramatically, and the corresponding quality and performance requirements for nano-metal superfine powders have also been increasing. Taking molybdenum as an example, its metal and alloy materials have the characteristics of high melting point, high hardness, high strength, good wear resistance, good thermal conductivity, small expansion coefficient, and good corrosion resistance, and are widely used in electronics, chemical industry, metallurgy, etc. , national defense and aerospace industry and other technical fields, such as liquid crystal display transparent conductive layer, solar cells...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/20B22F9/22
Inventor 杨俊武贾兰惠杨继东武婷
Owner XIAN HUIWEI NANO METAL MATERIALS
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