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Tin amalgam particle and preparing method and application thereof

An amalgam and particle technology, applied in the field of solid amalgam materials and its preparation, can solve problems such as increasing the difficulty and complexity of the process, affecting the quality of amalgam, and polluting the production site, so as to protect the production environment and the personal safety of workers, and prevent Effect of secondary pollution and saving mercury source

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

This method is easy to generate mercury vapor in the production process, which escapes from the airtight container, endangers human health, and pollutes the production site.
In the sphere cooling stage, oil is generally used as the cooling medium, and it is a direct cooling method that injects the sphere into the cooling medium; this cooling method is simple and economical, but it has many disadvantages
First of all, the method cools slowly and takes a long time; during the preparation process, solid particles will be dispersed and floated in the medium, which will affect the purity of the amalgam itself.
In addition, after the sphere is condensed, it must be degreased when it is taken out of the medium, which increases the difficulty and complexity of the process, and incomplete degreasing will also affect the quality of the amalgam, which in turn will affect the subsequent lamp making.

Method used

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  • Tin amalgam particle and preparing method and application thereof
  • Tin amalgam particle and preparing method and application thereof
  • Tin amalgam particle and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Tin amalgam proportioning Sn:Hg=75:25 by weight, the preparation average weight is the tin amalgam particle of 15mg, and preparation method is as follows:

[0039] 1) Under an argon inert gas atmosphere, add 75wt% tin particles and 25wt% liquid mercury into a closed stainless steel metal container, raise the temperature to 400°C to melt the tin and mercury, and mix under a pressure of 15psi for 1.5 hours until mixed Uniform alloy solution;

[0040] 2) In an inert gas atmosphere, by applying pressure, the pressure is controlled at 50psi, the alloy solution is pressed out, and the alloy liquid droplets are formed through the vibrating nozzle. The frequency and amplitude are controlled at 400Hz and 0.4mm respectively, and the alloy solution is made into alloy droplets. , the diameter of the alloy droplet is 1.4-1.6mm;

[0041] 3) Pass liquid nitrogen into the hollow area between the inner tube and the outer tube in the double-layer casing, and pass the alloy droplet throu...

Embodiment 2

[0044] Tin amalgam proportioning Sn by weight: Hg=71: 29, prepare the tin amalgam particle that average weight is 25mg, preparation method is as follows:

[0045] 1) Under an argon inert gas atmosphere, add 71wt% of tin particles and 29wt% of liquid mercury into a closed stainless steel metal container, raise the temperature to 400°C to melt the tin and mercury, and mix under a pressure of 20psi for 2 hours until mixed Uniform alloy solution;

[0046]2) Under an inert gas atmosphere, by applying pressure, the pressure is controlled at 80psi, the alloy solution is pressed out, and the alloy liquid droplets are formed through the vibrating nozzle. The frequency and amplitude are controlled at 100Hz and 0.6mm respectively, and the alloy solution is made into alloy droplets. , the diameter of the alloy droplet is 1.6-1.8mm;

[0047] 3) Pass liquid nitrogen into the hollow area between the inner tube and the outer tube in the double-layer casing, and pass the alloy droplet through...

Embodiment 3

[0050] Tin amalgam proportioning Sn:Hg=90:10 by weight, the preparation average weight is the tin amalgam particle of 1mg, and preparation method is as follows:

[0051] 1) Under an argon inert gas atmosphere, add 90wt% tin particles and 10wt% liquid mercury into a closed stainless steel metal container, raise the temperature to 450°C to melt the tin and mercury, and mix under a pressure of 1psi for 1 hour until mixed Uniform alloy solution;

[0052] 2) Under an inert gas atmosphere, by applying pressure, the pressure is controlled at 40psi, the alloy solution is pressed out, and alloy droplets are formed through the vibrating nozzle. The frequency and amplitude are controlled at 700Hz and 0.1mm respectively, and the alloy solution is made into alloy droplets. , the diameter of the alloy droplet is 0.5-0.7mm;

[0053] 3) Pass liquid nitrogen into the hollow area between the inner tube and the outer tube in the double-layer casing, and pass the alloy droplet through the inner ...

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Abstract

The invention discloses a tin amalgam particle and a preparing method thereof. The preparing method includes steps of: (1) adding 71-90wt% of tin and 10-29wt% of mercury into a sealed container in atmosphere of inert gases, fusing tin and mercury by raising temperature, and evenly mixing to obtain an alloy solution; (2) in atmosphere of inert gases, preparing the alloy solution into alloy drops with diameters of 0.5-2.0 mm; and (3) indirectly cooling inert gas current through liquid and condensing the alloy drops by aid of the cooled inert gas current at temperature of -100 DEG C to -190 DEG C to obtain the tin amalgam particle. The invention further discloses application of the tin amalgam particle in low-temperature fluorescent lamps. The tin amalgam particle can effectively control mercury vapor pressure, enables the fluorescent lamps to reach optimum light effect, can replace liquid mercury, accurately controls the amount of mercury guided into the lamps, is low in mercury content, can save mercury resources to the maximum limit and achieves effect of energy conservation and emission reduction. The preparing process is simple, feasible and suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a solid amalgam material and its preparation method and application, in particular to a 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] At present, major measures of "phasing out incandescent lamps and promoting energy-saving lamps" are being carried out globally. However, mercury must be used in the production of energy-saving fluorescent lamps. Many countries in Euro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08B22F1/00C22C13/00
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
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