Method for preparing foam glass by using waste silicon carbon material

A technology of foam glass and silicon carbon materials, which is applied in glass forming, glass manufacturing equipment, solid waste removal, etc., and can solve problems such as damage to silicon carbide rods, increase in contact resistance, corrosion or oxidation, etc.

Inactive Publication Date: 2010-06-30
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the following shortcomings of the silicon carbide rod itself, 1. From the analysis of the shape and structure, the combination of the thick end and the heating part of the silicon carbide rod is not very firm after long-term use. After a long period of use, the thick end and the heating part sometimes become loose. The contact resistance increases, causing damage to the silicon carbide rod, and the service life will be greatly reduced, and the power consumption is also large; 2. Its continuous working life is about 2000-5000h, and the service life of repeated heating is about 1000h ;3. During the use process, silicon carbide rods will react with many chemical substances volatilized from the fired products. , metal oxide contact, reaction, corrosion or oxidation will also occur

Method used

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  • Method for preparing foam glass by using waste silicon carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1) Clean the waste flat glass, dry it, and ball mill it to more than 200 mesh, then clean the waste silicon carbon rod, dry it, and grind it to more than 200 mesh;

[0021] 2) Take 92% of the waste flat glass after ball milling, 3% of the waste silicon carbon rod after ball milling, 3% of borax and 2% of sodium fluorosilicate in the ball mill jar and ball mill to 200 mesh to prepare the mixed material;

[0022] 3) In the preheating stage, put the ball-milled mixture into the mold and raise the temperature to 400°C for 20 minutes at a heating rate of 10°C / min;

[0023] 4) In the foaming stage, the temperature is raised from 400°C to 800°C at a heating rate of 20°C / min;

[0024] 5) In the bubble stabilization stage, keep warm at 800°C for 20 minutes;

[0025] 6) In the rapid cooling stage, cool to 600°C at a cooling rate of 25°C / min and keep warm for 20 minutes;

[0026] 7) In the annealing stage, the cooling rate is 1°C / min, and the annealing is below 100°C to obtain ...

Embodiment 2

[0029] 1) Clean the waste flat glass, dry it, and ball mill it to more than 200 mesh, then clean the waste silicon carbon rod, dry it, and ball mill it to more than 200 mesh;

[0030] 2) Take 90% of ball-milled waste flat glass, 5% of ball-milled waste silicon carbon rods, 3% of borax and 2% of sodium fluorosilicate in a ball-milling jar and ball-mill to more than 200 mesh according to mass percentage. Mixture;

[0031] 3) In the preheating stage, put the ball-milled mixture into the mold and raise the temperature to 400°C at a heating rate of 11°C / min for 25 minutes;

[0032] 4) In the foaming stage, the temperature is raised from 400°C to 820°C at a heating rate of 18°C / min;

[0033] 5) In the bubble stabilization stage, keep warm at 820°C for 25 minutes;

[0034] 6) In the rapid cooling stage, cool to 590°C at a cooling rate of 20°C / min and keep warm for 25 minutes;

[0035] 7) In the annealing stage, the cooling rate is 2°C / min, and the annealing is below 100°C to obtai...

Embodiment 3

[0038] 1) Clean the waste flat glass, dry it, and ball mill it to more than 200 mesh, then clean the waste silicon carbon rod, dry it, and ball mill it to more than 200 mesh;

[0039] 2) Take 90% of ball-milled waste flat glass, 4% of ball-milled waste silicon carbon rods, 2% of borax and 4% of sodium fluorosilicate in a ball mill jar and ball mill to more than 200 mesh according to the mass percentage. Mixture;

[0040] 3) In the preheating stage, put the ball-milled mixture into the mold and raise the temperature to 400°C at a heating rate of 12°C / min for 30 minutes;

[0041] 4) In the foaming stage, the temperature is raised from 400°C to 790°C at a heating rate of 15°C / min;

[0042] 5) In the bubble stabilization stage, keep warm at 790°C for 30 minutes;

[0043] 6) In the rapid cooling stage, cool to 580°C at a cooling rate of 15°C / min and keep warm for 30 minutes;

[0044] 7) In the annealing stage, the cooling rate is 2°C / min, and the foam glass is obtained by anneal...

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Abstract

The invention relates to a method for preparing foam glass by using a waste silicon carbon material, which comprises the following steps of: putting waste plate glass, a waste silicon carbon rod, borax and sodium fluosilicate into a ball-milling jar for grinding to over 200 meshes to produce mixed materials; and putting the obtained mixed materials into a mould, and preheating, foaming, foam-stabilizing, fast cooling and annealing the mixed materials to produce the foam glass. In the method, the main raw materials and a foaming agent are waste materials, and can be changed into treasure, so the method has a certain economical and environmental-friendly benefit.

Description

technical field [0001] The invention relates to a method for manufacturing foam glass, in particular to a method for preparing foam glass by using waste silicon carbon materials. Background technique [0002] Silicon carbon rod electric heating element is a rod-shaped and tubular non-metallic high-temperature electric heating element made of high-purity green hexagonal silicon carbide as the main raw material, which is processed into a billet according to a certain material ratio, and is sintered by 2200 ℃ high-temperature silicification and recrystallization. [0003] Due to the following shortcomings of the silicon carbide rod itself, 1. From the analysis of the shape and structure, the combination of the thick end and the heating part of the silicon carbide rod is not very firm after long-term use. After a long period of use, the thick end and the heating part sometimes become loose. The contact resistance increases, causing damage to the silicon carbide rod, and the serv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/08B09B3/00
Inventor 高淑雅郭晓琛田鹏郭宏伟
Owner SHAANXI UNIV OF SCI & TECH
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