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Method for preparing full closed pore foam glass

A closed-cell foam and glass technology, which is applied in the field of preparation of fully closed-cell foam glass, can solve the problems of small closed-cell rate of foam glass, and achieve the effects of small thermal conductivity, simple operation process and low cost

Inactive Publication Date: 2012-07-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the closed cell rate of the prepared foam glass is generally small, so the foam glass with high closed cell rate needs to be developed urgently.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, 1) at first, according to mass fraction with 75% fly ash, 20% glass powder, 5% purple wood knots are put into ball mill and ball milled to can pass through 200 mesh standard sieves, form batch;

[0021] SiO in the fly ash 2 The content is more than 60%, and the glass powder is ordinary flat glass, bottle glass, which is cleaned, dried, broken, and ball-milled to 200 mesh glass powder;

[0022] 2) Next, put the batch material into the disc granulator, add atomized distilled water with 10% mass of the batch material, and prepare the batch material into spherical particles with a particle size of 0.5-2mm;

[0023] 3) Then, evenly put the prepared spherical particles into the heat-resistant mold, the thickness of the pavement: 3cm; the refractoriness of the heat-resistant mold is higher than 1400°C, and can be reused at 1350°C. During use, the mold Paint the release agent on the inner wall

[0024] 4) Finally, move the mold together with the spherical partic...

Embodiment 2

[0025] Embodiment 2, 1) first, according to mass fraction with 78% fly ash, 18% glass powder, 4% purple wood knots are put into ball mill and ball milled to can pass through 200 mesh standard sieves, form batch;

[0026] SiO in the fly ash 2 The content is more than 60%, and the glass powder is ordinary flat glass, bottle glass, which is cleaned, dried, broken, and ball-milled to 200 mesh glass powder;

[0027] 2) Next, put the batch material into the disc granulator, add atomized distilled water with 10% mass of the batch material, and prepare the batch material into spherical particles with a particle size of 0.5-2mm;

[0028] 3) Then, evenly put the prepared spherical particles into the heat-resistant mold, the thickness of the pavement: 3cm; the refractoriness of the heat-resistant mold is higher than 1400°C, and can be reused at 1350°C. During use, the mold Paint the release agent on the inner wall

[0029] 4) Finally, move the mold together with the spherical particles...

Embodiment 3

[0030] Embodiment 3, 1) first, according to mass fraction with 81% fly ash, 16% glass powder, 3% purple wood knots are put into ball mill and ball milled to can pass through 200 mesh standard sieves, form batch;

[0031] SiO in the fly ash 2 The content is more than 60%, and the glass powder is ordinary flat glass, bottle glass, which is cleaned, dried, broken, and ball-milled to 200 mesh glass powder;

[0032] 2) Next, put the batch material into the disc granulator, add atomized distilled water with 10% mass of the batch material, and prepare the batch material into spherical particles with a particle size of 0.5-2mm;

[0033]3) Then, evenly put the prepared spherical particles into the heat-resistant mold, the thickness of the paving material: 4cm; the refractoriness of the heat-resistant mold is higher than 1400°C, and can be reused at 1350°C. During use, the mold Paint the release agent on the inner wall

[0034] 4) Finally, move the mold together with the spherical par...

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Abstract

The invention relates to a method for preparing full closed pore foam glass, which comprises the following steps of: firstly, placing fly ashes, glass powders and camwood knags into a ball mill and milling to pass through a standard sieve of 200-mesh so as to form a batch mixture; secondly, placing the batch mixture and atomized distilled water into a pan-type pelletizer to prepare spherical particles; uniformly placing the prepared spherical particles into a heat resistant mold; and finally, transferring the mold and the spherical particles into a foaming kiln and firing to obtain the full closed pore foam glass. In the invention, the full closed pore foam glass is produced by utilizing a palletizing method with the fly ashes as main materials; because of large usage amount of the fly ash, not only waste materials are turned into wealth but also the environment is protected. The foam glass prepared according to the method has favorable structural strength, low water absorption, smallthermal coefficient, high closed pore rate, same pore diameter of pores and uniform pore distribution and can be used as excellent heat insulation materials. The preparation process has simple operation course, low cost, energy saving and environmental protection and is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for manufacturing foam glass, in particular to a method for preparing fully closed-cell foam glass. Background technique [0002] Foam glass is made of waste glass, fly ash, mica, perlite, pumice powder, volcanic ash and other substances rich in glass phase as the main raw materials, adding foaming agent, modifier, accelerator, etc., finely pulverized and uniformly mixed The ingredients are placed in a specific mold and heated at a temperature of 750-900°C to soften, foam and anneal the glass to form a porous glass material filled with numerous uniform bubbles inside. [0003] Foam glass has physical properties such as low density, high strength, and small thermal conductivity. It not only has the inherent permanence, safety, reliability, chemical corrosion resistance, and ant-mouse resistance of glass materials, but also has the advantages of being compatible with other buildings. Compared with materials, it also has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C11/00
Inventor 郭宏伟李文福高档妮谭树英周小华刘新年盖言成
Owner SHAANXI UNIV OF SCI & TECH