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Method for preparing lightweight high-strength foam glass

A foam glass and high-strength technology is applied in the field of preparing lightweight and high-strength foam glass, which can solve the problems of complicated application procedures, high foaming temperature and high energy consumption, and achieve the effects of simple construction operation, simple preparation process and obvious economic benefits.

Inactive Publication Date: 2010-11-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The foam glass prepared by this method has small pore size and low flexural strength
CN200946127Y discloses a kind of foam glass with wire mesh, which solves the problem of low mechanical strength of foam glass, but still cannot solve the problem of light weight, and cannot produce large-format products, and the problems of complicated use procedures, construction quality and difficult effect guarantee
However, the density of foam glass prepared by this method is also higher than 1.0g / cm 3 , high foaming temperature and high energy consumption, it is difficult to be widely used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: 1) First, the waste and old flat glass is cleaned, and ball milled after drying to become a powder of more than 270 orders;

[0019] 2) Secondly, by mass fraction, 90% cullet powder, 1.5% SiC, 3.5% borax, 3% NaNO 3 2% mullite fibers with a diameter of 0.01 to 0.05mm and a length of 1 to 100mm are added to a ball mill jar and milled for 20 minutes to obtain a batch;

[0020] 3) Then, add the above-mentioned batch materials into the heat-resistant steel mold, compact the mold, and finally move the mold into the foaming furnace and burn it according to the following process;

[0021] In the preheating stage, after heating up from room temperature to 400°C at a heating rate of 15°C / min, keep it warm for 20 minutes;

[0022] In the foaming stage, the heating rate is 5°C / min to 820°C;

[0023] In the foam stabilization stage, keep warm at a constant temperature of 820°C for 30 minutes;

[0024] In the rapid cooling stage, the cooling rate is 20°C / min, cooled ...

Embodiment 2

[0027] Embodiment 2: 1) at first, the glass of the bottle and jar is cleaned, and after drying, the ball mill becomes a powder of more than 270 orders;

[0028] 2) Secondly, 87% cullet powder, 1.5% SiC, 3.5% borax, 3% NaNO 3 , 5% of high silica fibers with a diameter of 0.01 to 0.05 mm and a length of 1 to 100 mm are added to a ball mill tank and ball milled for 60 minutes to obtain batch materials;

[0029] 3) Then, add the above-mentioned batch materials into the heat-resistant steel mold, compact the mold, and finally move the mold into the foaming furnace and burn it according to the following process;

[0030] In the preheating stage, the temperature is raised from room temperature to 400°C at a rate of 10°C / min, and then kept for 30 minutes;

[0031] In the foaming stage, the heating rate is 8°C / min to 780°C;

[0032] In the bubble stabilization stage, keep warm at a constant temperature of 780°C for 60 minutes;

[0033] In the rapid cooling stage, the cooling rate is 2...

Embodiment 3

[0036] Embodiment 3: 1) First, the electronic glass is cleaned, dried and ball milled to become a powder of more than 270 mesh;

[0037] 2) Secondly, by mass fraction, 93% cullet powder, 1% SiC, 2% borax and 2% NaNO 3 , 2% SiC fibers with a diameter of 0.01 to 0.05 mm and a length of 1 to 100 mm are added to a ball mill tank and ball milled for 10 minutes to obtain batch materials;

[0038] 3) Then, add the above-mentioned batch materials into the heat-resistant steel mold, compact the mold, and finally move the mold into the foaming furnace and burn it according to the following process;

[0039] In the preheating stage, the temperature is raised from room temperature to 400°C at a rate of 20°C / min, and then kept for 10 minutes;

[0040] In the foaming stage, the heating rate is 10°C / min to 850°C;

[0041] In the bubble stabilization stage, keep warm at a constant temperature of 850°C for 10 minutes;

[0042] In the rapid cooling stage, the cooling rate is 23°C / min, cooled...

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Abstract

The invention relates to a method for preparing lightweight high-strength foam glass, which comprises the following steps of: firstly, cleaning cullet, drying the cleaned cullet, and performing ball milling to form powder; secondly, mixing the cullet powder, SiC, borax, NaNO3 and high-strength high-temperature resistance fibers to obtain a batch mixture; thirdly, adding the batch mixture into a heat resistant steel die, and performing compaction and die filling; and finally, transferring the die into a foaming furnace, and sintering in phases of preheating, foaming, foam stabilization, rapid cooling and annealing to obtain the foam glass. The method is favorable for utilizing waste and protecting environment, and the prepared foam glass has the advantages of low density, high strength, low conductivity factors, simple preparation process and simple and convenient construction and operation. Therefore, the method can protect environment effectively and turn waste into wealth, and the high-strength foam glass block can absorb explosion energy, and reduce the physical and property damage caused by collapse of wall construction materials due to terrorist attacks or natural disasters.

Description

technical field [0001] The invention relates to a method for preparing foam glass, in particular to a method for preparing lightweight high-strength foam glass through fiber reinforcement. It is used in the field of wall construction or military anti-riot, earthquake-proof and other construction environments. Background technique [0002] In the past few decades, there have been many natural disasters and man-made terrorist attacks around the world, causing tens of thousands of casualties and countless property losses. For example, the earthquake that occurred in Tangshan City, Hebei Province, my country on July 28, 1976 killed more than 240,000 people and injured 160,000 people. In 1993, terrorists detonated a car bomb in the garage of the World Trade Center in New York City, causing significant loss of life and property. In 1998, the U.S. embassies in Nairobi and Dar es Salaam were also attacked by terrorist car bombs, causing heavy loss of life and property respectively...

Claims

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Application Information

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IPC IPC(8): C03C11/00
CPCC03C11/007
Inventor 高淑雅郭晓琛
Owner SHAANXI UNIV OF SCI & TECH
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