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Zinc tin amalgam granule and preparation method and application thereof

A mercury particle, zinc-tin technology, which is applied in the field of solid amalgam materials and their preparation, can solve the problems such as the inability to precisely control the proportion of mercury and the content of mercury, the complicated preparation process of the ternary amalgam, the easy deterioration of the amalgam and the blackening, and the like. Protect the production environment and workers' personal safety, avoid oxygen and water vapor pollution, and have a wide range of processing temperatures

Active Publication Date: 2012-08-08
上海亚尔精密零件制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem solved by the present invention is to overcome the problem that the mercury ratio and mercury content in the amalgam cannot be accurately controlled in the prior art, the preparation process of the ternary amalgam is complicated, the prepared amalgam is easily deteriorated and blackened, and mercury spillage occurs. Defects, a zinc-tin amalgam particle and preparation method thereof are provided

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  • Zinc tin amalgam granule and preparation method and application thereof
  • Zinc tin amalgam granule and preparation method and application thereof
  • Zinc tin amalgam granule and preparation method and application thereof

Examples

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Embodiment 1

[0059] The zinc-tin amalgam is prepared according to the weight ratio Zn:Sn:Hg=4:60:36, and the zinc-tin amalgam particles with an average weight of 10 mg are prepared.

[0060] The preparation method of zinc-tin amalgam particles:

[0061] 1) Under an argon atmosphere, add raw materials: 0.6Kg of zinc flakes, 9Kg of tin particles and 5.4Kg of liquid mercury into a closed container, heat up to 400°C to melt the raw materials, and mix under a pressure of 20psi for 1.5 hours until mixed Obtain an alloy solution uniformly; in an inert gas atmosphere, by applying pressure, the pressure is controlled at 55psi, the alloy solution is pressed out, and alloy droplets are formed through a vibrating nozzle. The frequency and amplitude are controlled at 600Hz and 0.3mm respectively, and the alloy solution is made into Alloy droplets, the diameter of alloy droplets is 1.1-1.3mm;

[0062] 2) indirectly cooling the inert gas flow with liquid nitrogen, and condensing the alloy droplets at -1...

Embodiment 2

[0068] The zinc-tin amalgam is formulated according to the weight ratio Zn:Sn:Hg=4.9:90:5.1, and the zinc-tin amalgam particles with an average weight of 25 mg are prepared.

[0069] The preparation method of zinc-tin amalgam particles:

[0070] 1) Under an argon atmosphere, add raw materials: 0.98Kg of zinc flakes, 18Kg of tin particles and 1.02Kg of liquid mercury into a closed container, heat up to 400°C to melt the raw materials, and mix under a pressure of 1psi for 1 hour until mixed Obtain an alloy solution uniformly; in an inert gas atmosphere, by applying pressure, the pressure is controlled at 70psi, the alloy solution is pressed out, and the alloy droplet is formed through a vibrating nozzle, and the frequency and amplitude are controlled at 200Hz and 0.8mm respectively, and the alloy solution is made into Alloy droplets, the diameter of the alloy droplets is 1.6-1.8mm;

[0071] 2) indirectly cooling the inert gas flow with liquid nitrogen, and condensing the alloy ...

Embodiment 3

[0077] The zinc-tin amalgam is prepared according to the weight ratio Zn:Sn:Hg=1:29:70, and the zinc-tin amalgam particles with an average weight of 1 mg are prepared.

[0078] The preparation method of zinc-tin amalgam particles:

[0079] 1) Under an argon atmosphere, add raw materials: 0.15Kg of zinc flakes, 4.35Kg of tin particles and 10.5Kg of liquid mercury into a closed container, heat up to 450°C to melt the raw materials, and mix under a pressure of 25psi for 3 hours to Mix evenly to obtain an alloy solution; in an inert gas atmosphere, pressurize the alloy solution at a pressure of 50psi, and form alloy droplets through a vibrating nozzle. The frequency and amplitude are controlled at 800Hz and 0.1mm respectively, and the alloy solution is made Form alloy droplets, the diameter of alloy droplets is 0.5-0.7mm;

[0080] 2) indirectly cooling the inert gas flow with liquid nitrogen, and condensing the alloy droplets at -100°C with the cooled inert gas flow to obtain a z...

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Abstract

The invention discloses a zinc tin amalgam granule, and a preparation method and application thereof. The preparation method comprises the following steps: in an inert gas atmosphere, adding raw materials, namely 1-4.9wt% of zinc, 29-90wt% of tin and 5.1-70wt% of mercury into a closed vessel; heating to melt the raw materials; uniformly mixing the raw materials to obtain an alloy solution; in the inert gas atmosphere, preparing the alloy solution into alloy droplets (having the diameter of 0.5-2 mm); indirectly cooling the inert gas flow with a liquid; condensing the alloy droplets at -100 to -190 DEG C; in the inert gas atmosphere at 0-15 DEG C and with the relative humidity of 20-40%, performing stabilization treatment for 1-7 days; performing component detection; coating zinc powder and / or tin powder according to the detection result; detecting a water content; and polishing glass powder according to the detection result, and thus obtaining the zinc tin amalgam granule. The preparation method is simple and applicable to large-scale production; the zinc tin amalgam granule is stable in component content, high in quality and difficult to become black; and the mercury overflowing phenomenon on the surface can be avoided.

Description

technical field [0001] The invention relates to a solid amalgam material and its preparation method and application, in particular to a zinc-tin amalgam particle and its preparation method and application. Background technique [0002] Mercury is an indispensable working substance in fluorescent lamps. A lot of practice has shown that: only when mercury releases ultraviolet rays of a specific wavelength of 253.7nm, fluorescent lamps can obtain the highest luminous efficiency, and the optimum vapor pressure value for obtaining ultraviolet rays is Ph=0.8 Pa. As the temperature increases, the mercury vapor pressure also increases, and more UV radiation is self-absorbed by the mercury, thereby reducing lamp efficacy and reducing light output. [0003] The traditional fluorescent lamp manufacturing process is to introduce liquid mercury. Since the amount of mercury cannot be accurately controlled when injecting liquid mercury, the mercury content in the lamp is too much. cause ...

Claims

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Application Information

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IPC IPC(8): B22F9/08B22F1/00C22C7/00C22C13/00
Inventor 何健荣盛誉顾峰毅顾新颜
Owner 上海亚尔精密零件制造有限公司