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Color poly crystal silicone micro particle and its preparing method

A polysilicon and industrial polysilicon technology, applied in glass manufacturing equipment, silicon, manufacturing tools, etc., can solve the problems of incompatibility with various color varieties and singleness of car decorative paint, and achieve bright and beautiful metallic luster, sufficient material sources, and equipment varieties. less effect

Inactive Publication Date: 2006-03-22
陈邹红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, industrial polysilicon particles that have been crushed, separated in particle size, and cleaned can meet the above requirements, but the existing industrial polysilicon particles only have a single color of dark gray, which is not suitable for car decoration paints that require multiple colors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 10 kilograms of the above-mentioned polysilicon particle spare material with a particle size of 500 microns and spread it in a temperature-adjustable muffle furnace with a diameter of 1000 mm. The thickness of the polysilicon particle standby material spread in the muffle furnace is close to 1 cm. First set the temperature control of the muffle furnace at 200°C, when the temperature in the muffle furnace rises to 200°C, then set the temperature control at 400°C; when the temperature in the muffle furnace rises to 400°C, then set the temperature control at 600°C; when the temperature in the muffle furnace rises to 600°C, set the temperature control at 800°C; when the temperature in the muffle furnace rises to 800°C, then set the temperature control at 1000°C; It takes about 3 hours to raise the temperature internally to 1000°C, and then keep the temperature for 0.5 hours to fully and uniformly nucleate and crystallize all the polysilicon particle spare materials. Ne...

Embodiment 2

[0024] Get 10 kilograms of the above-mentioned polysilicon microparticles spare material with a particle size of 1.3 microns and spread them in a temperature-adjustable muffle furnace with a diameter of 1000 mm. example. First set the temperature control of the muffle furnace at 500°C, when the temperature in the muffle furnace rises to 500°C, then set the temperature control at 800°C; when the temperature in the muffle furnace rises to 800°C, the temperature in the muffle furnace rises to 800°C ℃, then set the temperature control at 1000 ℃; in this way, the temperature in the muffle furnace is gradually raised to 1000 ℃, and the total time is about 3 hours; Nucleation, crystallization. Next, set the temperature of the muffle furnace at 1300°C; when the temperature in the muffle furnace rises to 1300°C, it takes about 1 hour; then keep the temperature for 2 hours to make all the polysilicon particles close to the critical temperature of discoloration. Next, the temperature o...

Embodiment 3

[0030] Take 10 kilograms of polysilicon microparticle spare materials with a particle size of 26 microns and a silicon content higher than 98.5%, and spread them evenly in a temperature-adjustable muffle furnace with a diameter of 1000 mm. Gradually increase the temperature of the muffle furnace, and gradually raise the temperature inside the muffle furnace to 1000° C., and then keep the temperature constant for 1 hour. Next, the temperature of the muffle furnace was controlled and set at 1300° C.; the temperature in the muffle furnace was raised to 1300° C. and then kept constant for 2 hours. Next, the temperature of the muffle furnace is controlled and set at 1340° C. to 1350° C., and the temperature in the muffle furnace is raised to the set temperature and then kept at a constant temperature for 0.2 hours. Then cut off the power supply to gradually cool down to room temperature in the muffle furnace, and the sintered polysilicon particles become rose red with metallic luster...

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Abstract

The present invention is color polycrystalline silicon particle product and its preparation process. The color polycrystalline silicon particle product has silicon content over 98.5 % and particle size of 1.3-500 microns, and is blue, rose, yellow or green with metal luster. The preparation process includes the steps of: preparing polycrystalline silicon particle material with silicon content over 98.5 % and particle size of 1.3-500 microns; heating inside some container to 1000 deg c and maintaining for 0.5-1 hr; heating to 1300 deg c and maintaining for 1-2 hr; and further heating to 1310-1330 deg c for obtaining blue product, to 1340-1350 deg c for obtaining rose product, to 1360-1365 deg c for obtaining yellow product or to 1370-1380 deg c for obtaining green product, and maintaining for 0.2 hr; cooling gradually to room temperature; and sieving to obtain product.

Description

technical field [0001] The invention relates to a polysilicon particle and a method for sintering the polysilicon particle, in particular to a polysilicon particle with a specific color and a method for sintering the polysilicon particle with a specific color. technical background [0002] Silicon particles are widely used in chemical industry, cosmetics, electronics, light industry, smelting, thermal insulation refractory materials, precision machinery and other industries. With the development of modern industry, the production technology of polysilicon is becoming more and more perfect, and the cost is reduced; therefore, it is possible to replace ordinary silicon particles with polysilicon particles with better physical and chemical properties such as chemical stability, wear resistance, and high temperature resistance, and develop new products. A generation of products. At present, domestic work in this area has not yet been widely carried out. For example, the high-e...

Claims

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Application Information

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IPC IPC(8): C01B33/02C03B20/00
Inventor 陈邹红
Owner 陈邹红
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