Preparation method of gallium particles

A particle size and coolant technology, which is applied in the field of metal particle preparation, can solve the problems of difficulty in making gallium particles with uniform particle size and smoothness, complicated preparation devices and methods, and high supercooling degree of high-purity gallium. Easy to observe and simplify the effect of the process

Active Publication Date: 2013-06-19
威科赛乐微电子股份有限公司
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Problems solved by technology

[0003] Although gallium has a wide range of uses, because the melting point of gallium is very low, only 30°C, and the supercooling degree of high-purity gallium is large, it often does not solidify until -18°C, so it is difficult to produce gallium with uniform, smooth, and small particle sizes. grain
[0004] The Chinese patent application No. 200810155685.1 authorized and announced on April 22, 2009 and the Chinese patent application No. 200920036936.4 authorized and announced on December 9, 2009 have proposed two raind

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preparation example Construction

[0018] like figure 1 and figure 2 As shown, the preparation method of gallium particles according to the present invention comprises the steps of: adding the coolant into the container 4, so that the coolant forms the coolant layer 3 in the container 4 (step S1); adding the heat insulating agent into the container In 4, to form heat-retaining agent layer 2 (step S2) on coolant layer 3; Liquid gallium 5 is added in titrator 1 (step S3); The titration port 11 of titrator 1 is inserted in heat-retaining agent layer 2 ( Step S4); Make the liquid gallium 5 flow out from the titrator 1, so that the liquid gallium 5 flowing out from the titrator 1 forms a gallium drop 6 at the titration port 11 of the titrator 1, and the gallium liquid drop 6 breaks away from the titration port 11, Flow through the insulation layer 2 and enter the coolant layer 3 to form gallium grains 7 (step S5).

[0019] In the method for preparing gallium particles according to the present invention, it may fu...

Embodiment 1

[0035] A glass tube of Φ70mm*1200mm is used as the container 4; a CBS-1D full-automatic potentiometric titrator is used as the titrator 1; the liquid gallium used is 5N gallium, and the temperature of the liquid gallium is 50° C.; the coolant used is glycerol (glycerin) Alcohol) and water mixed solution, in the mixed solution of glycerin and water, glycerin accounts for 80% by volume, and water accounts for 20% by volume, and the water used is grade II high-purity water, and the mixed solution of glycerin and water passes through The temperature of the low-temperature refrigerator is controlled so that the temperature of the mixture of glycerin and water is minus 30°C; the insulating agent used is grade II high-purity water, and the temperature is 50°C; the layer thickness of the coolant layer 3 is 110cm; the layer thickness of the insulating agent layer 2 10cm; use grade II high-purity water as the cleaning agent; the titration port of the CBS-1D full-automatic potentiometric ...

Embodiment 2

[0037] A quartz tube of Φ70mm*1200mm is used as the container 4; an acid burette is used as the burette 1; the liquid gallium used is 5N gallium, and the temperature of the liquid gallium is 40°C; In the mixture of glycerin and water, glycerin accounts for 60% by volume, water accounts for 40% by volume, and the water is grade II high-purity water. The temperature of the mixture of glycerin and water is controlled by a low-temperature refrigerator, and the temperature is minus 20°C; The insulating agent used is grade II high-purity water at a temperature of 40°C; the layer thickness of the coolant layer 3 is 110cm; the layer thickness of the insulating agent layer 2 is 8cm; grade II high-purity water is used as the cleaning agent; The depth in the agent layer 2 is 0.7cm; the flow rate of the acid burette is controlled at 16ml / min; after cleaning, the residual coolant and cleaning agent on the surface of the gallium particles are blotted with filter paper, and the particle size ...

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Abstract

The invention provides a preparation method of gallium particles. The preparation method includes the steps: adding coolants to a container, so that forming a coolant layer in the container by the coolants; adding insulation agents to the container, so that forming an insulation agent layer on the coolant layer; adding liquid state gallium to a titrator; inserting a titration opening of the titrator into the insulation agent layer, enabling the liquid state gallium to flow out from the titrator, so that forming gallium drops on the titration opening by the liquid state gallium flowing out the titrator, the gallium drops break array the titration opening and flow the insulation agent layer and then enter into the coolant layer, then forming the gallium particles. According to the preparation method of the gallium particle, due to fact that operation is done, combination of the insulation agent and the coolant is adopted, the preparation method is capable of simplifying technologies, easy to operate, and quality of products is easy to observe, and particle diameters of the gallium particles are controllable, and uniformity is good.

Description

technical field [0001] The invention relates to a method for preparing metal particles, in particular to a method for preparing gallium particles. Background technique [0002] Gallium (Gallium) chemical formula Ga, molecular weight 69.72, silver-white metal, density 5.904g / cm 3 , melting point 29.78°C, boiling point 2403°C. Gallium is soft, brittle, and stable in air. Gallium is soluble in acid and alkali when heated; it reacts violently with boiling water, and only slightly reacts with water at room temperature; it can react with most metals at high temperature. Gallium has a wide range of uses. Gallium can be used as a raw material for making optical glass, vacuum tubes, and semiconductors. In addition, gallium can be used in quartz thermometers to measure high temperatures, and it can be added to aluminum to produce heat-treatable alloys. Alloys of gallium and gold are used in decoration and inlays. Ga is also sometimes used as a catalyst in organic synthesis. [00...

Claims

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Application Information

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IPC IPC(8): B22F9/06
Inventor 胡智向卢金生文崇斌毛简吴广杰
Owner 威科赛乐微电子股份有限公司
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