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A device and method for spheroidizing powder using a line-focusing solar furnace

A technology of spheroidization treatment and powder spheroidization section, which is applied in the field of concentrated solar energy utilization and materials, and achieves the effects of low risk, simple and controllable device, and orderly delivery

Active Publication Date: 2021-11-23
GUANGDONG FIVESTAR SOLAR ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the technical defects of the existing powder spheroidization process and provide a brand-new device and method for spheroidizing powder using a line-focused solar furnace. This invention uses solar energy to heat the powder until it melts for the first time. , the powder is evenly dispersed and falls freely

Method used

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  • A device and method for spheroidizing powder using a line-focusing solar furnace
  • A device and method for spheroidizing powder using a line-focusing solar furnace
  • A device and method for spheroidizing powder using a line-focusing solar furnace

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Embodiment 1

[0044] In order to facilitate the understanding of this embodiment, some terms in the field of solar energy utilization and material processing involved in this embodiment are briefly introduced as follows:

[0045] "Heliostat" refers to an optical device that reflects the light of the sun or other celestial bodies in a fixed direction, also known as a star-fixing mirror.

[0046] "Slot concentrator" refers to a line-focus concentrator with a trough-shaped reflector section for reflecting and converging solar radiation.

[0047] "Protective gas" means a gas that prevents chemical reactions of powders at high temperatures, especially oxidation reactions. In the scheme of the present invention, it can be N 2 Or rare gases such as helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) or their mixtures.

[0048] "Vacuum tube" refers to a tube with double-ended openings and a vacuum interlayer. In order to absorb sunlight, the outer tube is a glass light-transmitting tube,...

Embodiment 2

[0054] In this embodiment, the method of spheroidizing powder is introduced in detail.

[0055] First, open the protective gas cylinder 10, turn on the fan 12, and discharge the air in the protective gas circuit and the powder drop channel, wherein the powder drop channel is composed of the powder dispersing device 5, the powder preheating section 6, the powder spheroidizing section 7, and the powder drop channel. The cooling sections 8 are sequentially connected to form;

[0056] Secondly, start the heliostat to track the sun, reflect the sunlight to the trough concentrator, and the trough concentrator will reflect the sunlight twice to form a stable line concentration at the position of the powder spheroidizing section 7 ;

[0057] Finally, the powder storage device 4 is opened, and the powder falls freely in the powder preheating section 6 , powder spheroidizing section 7 , powder cooling section 8 and powder collecting device 9 after passing through the powder dispersing ...

Embodiment 3

[0060] This embodiment discloses an aluminum alloy powder spheroidization device utilizing concentrated solar energy, according to figure 1 The powder spheroidization processing system is established as shown. Among them, a 10m×12m heliostat is used, a trough concentrator with an opening of 5.77m and a height of 8m is used, and a solar trough vacuum heat collection tube with an outer diameter of 120mm is used for the powder spheroidization section (the inner tube is a metal tube with an outer diameter of 70mm , metal tube thickness 3mm). Nitrogen was used as a protective gas. In the solar radiation is 600W / M 2 Under moderate weather conditions, the metal tube can be heated to 850 degrees Celsius. The aluminum alloy powder falls in a pipe diameter of 64mm—the average temperature of the pipe wall is 850 degrees Celsius—and at 7.5m, it can ensure that the aluminum alloy powder with a particle size of less than 60 microns is completely melted, and the melted aluminum alloy powd...

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Abstract

The invention discloses a device and method for spheroidizing powder by using a line-focusing solar furnace. The system continuously tracks the sun through heliostats to achieve stable linear aggregation. The powder delivery, spheroidization, cooling and collection system realizes continuous delivery of powder and collection of spheroidized powder. The concentrator system is at the position of the powder spheroidization section Stable line aggregation is formed, and the powder falls from top to bottom in the powder spheroidization section under the action of gravity. During the falling process, it is heated to melting by concentrated solar energy, and forms a spherical shape under the action of surface tension, and continues to fall in the powder cooling section. Cooling, forming a high-quality spherical powder protection gas circuit to realize cooling, preheating and preventing oxidation of the powder. The invention utilizes concentrated solar energy to realize spheroidization of powder, which is energy-saving, safe, and can realize large-scale and batch production in the true sense.

Description

technical field [0001] The invention relates to the field of concentrating solar energy utilization and materials, in particular to a device and method for spheroidizing powder by using a line-focusing solar furnace. Background technique [0002] With the development of society, various processing techniques are becoming more and more refined, and the requirements for materials are getting higher and higher. The industry that uses powder as raw material has put forward higher and higher requirements for the quality of powder, and two of the quality indicators are that the surface of powder particles is required to be smooth and have a high degree of sphericity. In the industrial field, whether it is metal powder or non-metal powder, the process has requirements for its sphericity, and the higher the sphericity, the better. The following is an example of additive design and nylon powder coating. [0003] Additive manufacturing (usually also called 3D printing) refers to the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/08B29B9/10B29B9/12B33Y70/00
CPCB22F9/082B22F2009/0848B22F2009/0876B29B9/10B29B9/12B29B2009/125B33Y70/00
Inventor 吴治永王志峰
Owner GUANGDONG FIVESTAR SOLAR ENERGY
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