Method for preparing foamed glass by using waste fiberglass products

A technology of foam glass and glass fiber, which is applied in the field of preparing foam glass by using waste glass fiber products, which can solve the problems of complicated processing technology and achieve the effects of simple operation process, reduced production cost and low melting temperature

Inactive Publication Date: 2011-01-26
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the surface treatment of waste glass fiber mesh cloth and glass fiber mat, and the softness of such products, the t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, 1) at first, dry the alkali-free glass fiber felt and the alkali-free glass fiber grid cloth of discarding, after removing metal, organic matter and impurity therein, it is cut into fragments less than 20mm * 20mm, and after cutting Put the pieces into a ball mill and grind them to 200 mesh to form glass powder;

[0021] 2) Secondly, according to the mass fraction, 91% glass powder, 2% silicon carbide, 5% antimony trioxide, 0.5% sodium sulfate, 0.5% sodium fluoroaluminate, 0.5% sodium nitrate and 0.5% The dicobalt trioxide is put into the ball mill and ball milled for 1 hour to form the foam glass batch;

[0022] 3) Then, put the batch material into the heat-resistant mold and pave it flat, the thickness of the paving material is 5cm;

[0023] 4) Finally, move the mold together with the batch materials into the foaming furnace, and fire according to the following firing system: after heating from room temperature to 360°C at a heating rate of 2°C / min, kee...

Embodiment 2

[0024] Embodiment 2, 1) at first, dry the alkali-free glass fiber felt and the alkali-free glass fiber grid cloth of discarding, after removing metal, organic matter and impurity therein, it is cut into fragments less than 20mm * 20mm, and after cutting Put the pieces into a ball mill and grind them to 200 mesh to form glass powder;

[0025] 2) Secondly, according to the mass fraction, 96% of glass powder, 1% of silicon carbide, 0.5% of antimony trioxide, 0.5% of sodium sulfate, 0.5% of sodium fluoroaluminate, 0.5% of sodium nitrate and 1% The dicobalt trioxide is put into the ball mill and ball milled for 1 hour to form the foam glass batch;

[0026] 3) Then, put the batching material into a heat-resistant mold and pave it flat, the thickness of the paving material is 8cm;

[0027] 4) Finally, move the mold together with the batch materials into the foaming furnace, and fire according to the following firing system: after heating from room temperature to 360°C at a heating r...

Embodiment 3

[0028] Embodiment 3, 1) first, dry the discarded non-alkali glass fiber mat and non-alkali glass fiber grid cloth, remove metal, organic matter and impurities therein and cut it into fragments less than 20mm * 20mm, and after cutting Put the pieces into a ball mill and grind them to 200 mesh to form glass powder;

[0029] 2) Next, put 92% glass powder, 3% silicon carbide, 1% antimony trioxide, 2% sodium sulfate, 1% sodium fluoroaluminate and 1% sodium nitrate into the ball mill according to the mass fraction Medium ball milling for 1 hour to form a foam glass batch;

[0030] 3) Then, put the batch material into the heat-resistant mold and pave it flat, the thickness of the paving material is 6cm;

[0031] 4) Finally, move the mold together with the batch materials into the foaming furnace, and fire according to the following firing system: after heating from room temperature to 360°C at a heating rate of 3°C / min, keep it warm for 30 minutes; then heat it at a heating rate of ...

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PUM

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Abstract

The invention relates to a method for preparing foamed glass by using waste fiberglass products, which comprises the following steps of: firstly, airing collected waste fiberglass mats and fiberglass meshes, manually sorting out the impurities of metal, organic matter and the like, cutting into fragments smaller than 20 mm*20 mm, and ball-milling to 200 meshes to form glass powder; loading the glass powder, silicon carbide, diantimony trioxide, sodium sulfate, sodium fluoaluminate, sodium nitrate and cobalt oxide into a ball mill, and ball-milling to form a batch; loading the batch into a heat-resisting mold, and firing into foam glass. In the invention, the waste fiberglass products are used as a main raw material to produce foam glass, and the prepared foam glass has low density, high strength, small heat conductivity and low water absorption rate. The preparation method has simple operation process, low founding temperature and low cost, not only changes wastes into valuables, but also protects the environment, and is applicable to industrial production.

Description

technical field [0001] The invention relates to a method for manufacturing foam glass, in particular to a method for preparing foam glass by utilizing waste glass fiber products. technical background [0002] In the production process and use of the glass fiber industry, a large amount of glass fiber waste is produced every year, including waste glass fiber hard filaments, waste glass fiber mats, glass fiber mesh cloth, etc. So far, only waste glass fiber hard filaments can be recycled by re-melting and other methods, and waste glass fiber mats and glass fiber mesh cloth can only be buried. The main reason is not only that the surface of these glass fibers has been treated with a sizing agent, but more importantly, the glass fibers made into glass fiber products have high toughness, the collection and crushing process is complicated, and the waste glass fiber mat is easily broken in the glass fiber mesh cloth. Inclusion of impurities such as various metals, if such impuriti...

Claims

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Application Information

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IPC IPC(8): C03C11/00
Inventor 郭宏伟刘新年高档妮董琦李文福王薇盖言成焦宇鸿
Owner SHAANXI UNIV OF SCI & TECH
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