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Anti-radiation building putty powder and preparation method thereof

A radiation protection and putty powder technology, which is applied in the field of radiation protection materials, can solve problems such as volume expansion of the putty layer, reduce radiation shielding and safety, and segregation of building putty components, so as to improve shielding performance and realize harmless disposal. Effect

Inactive Publication Date: 2013-04-03
YANCHENG INST OF TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lead powder is highly toxic, and iron powder is easy to oxidize, causing volume expansion of the putty layer
In addition, due to the different density of the raw materials, the anti-radiation fillers mixed with the above raw materials are prone to component segregation, which reduces its radiation shielding and safety.

Method used

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  • Anti-radiation building putty powder and preparation method thereof
  • Anti-radiation building putty powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Dry-mill the CRT glass in a ball mill; pass through a 60-mesh sieve to obtain fine powder, and mix it with 30 parts of ordinary construction cement to obtain a ground radiation-proof construction putty; main properties: density 2.641g / cm 3 , the line attenuation coefficient (1 / cm) corresponding to the ray energy of 30KeV~200KeV is 17.09~0.66; the specific lead equivalent (mmPb / mm) corresponding to 80KeV and 100KeV is 0.072 and 0.03 respectively.

Embodiment 2

[0026] Send the ground powder in Example 1 into a rotary kiln, heat up to 550°C for calcination and keep warm for 230 minutes for mineralization; then leave the kiln and cool down to below 100°C; then send it into a ball mill for dry ball milling; pass through a 100-mesh sieve, Obtain fine powder; mix evenly with 30 parts of ordinary construction cement to obtain sintered anti-radiation construction putty; main properties: density is 2.631g / cm 3 , the line attenuation coefficient (1 / cm) corresponding to the ray energy of 30KeV~200KeV is 17.09~0.66; the specific lead equivalent (mmPb / mm) corresponding to 80KeV and 100KeV is 0.08 and 0.04 respectively.

Embodiment 3

[0028]Dry-mill the conical-neck glass in a ball mill; pass through a 100-mesh sieve to obtain a fine powder; mix it with 40 parts of ordinary construction cement to obtain an abrasive radiation-proof construction putty; main properties: density 2.61g / cm 3 , the linear attenuation coefficient (1 / cm) corresponding to the ray energy of 30KeV~200KeV is 26.29~1.04; the specific lead equivalent (mmPb / mm) corresponding to 80KeV~100KeV is 0.09 and 0.06 respectively.

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Abstract

The invention provides anti-radiation building putty powder and a preparation method thereof. Color picture tube glass and reinforced ingredients are mixed in proportion and ground till the particle size is 60 to 100 meshes to obtain ground powder; the ground powder is further mixed with cement in proportion to obtain ground anti-radiation building putty powder; the ground powder can be further calcined and mineralized and then mixed with the cement in proportion to obtain sintered anti-radiation building putty powder, so that the anti-radiation building putty powder can obtain higher chemical stability and use safety. By the method, the waste color picture tube glass is turned into resources, and the harmless disposal, recycling and high-value utilization of the waste color picture tube glass are implemented. The anti-radiation building putty powder can be widely applied to the surface treatment of a radiation protection body and a radioactive building material (building).

Description

technical field [0001] The invention relates to a powdery building putty powder applied on the surface of a radiation-protected building structure and a preparation method thereof, belonging to the technical field of radiation-protecting materials. Background technique [0002] The color picture tube of electronic products such as color television and desktop computer is an aggregate of glassy screen, cone, neck and molten solder, wherein, the screen contains 8-12% barium oxide and 8-12% strontium oxide, and the screen's The inner surface is also coated with fluorescent powder containing heavy metals such as lead oxide and cadmium; the cone contains 20-26% lead oxide, and the inner and outer surfaces of the cone are respectively coated with graphite and ferric oxide; the neck Contains 40-42% of lead oxide; the molten solder (sealed screen tube, tube cone) contains up to 40-50% of lead oxide and zinc borate. They account for about 65.5%, 29%, 1% and 4.5% of the mass of pictu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
Inventor 程俊华张健程俊静徐新民陈刚陈汝祝陈华王沛钊
Owner YANCHENG INST OF TECH
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