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Method for low temperature production of foam glass product

A technology of foam glass and products, which is applied in the field of low-temperature production of foam glass products with high strength, which can solve the problems of non-environment-friendly materials, large energy consumption, and high foaming temperature, so as to increase strength, reduce production costs, and improve The effect of production efficiency

Inactive Publication Date: 2013-10-02
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The raw material of foam glass comes from waste glass, but its foaming temperature is generally high, ranging from 850-1000°C, even as high as 1200°C. The energy consumption is relatively large, and the cost of fuel is an important factor restricting its large-scale promotion and use. , does not meet its definition of an environmentally friendly material

Method used

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  • Method for low temperature production of foam glass product
  • Method for low temperature production of foam glass product
  • Method for low temperature production of foam glass product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Depend on figure 1 It can be seen that figure 1 It is the DTA curve of the glass powder, and the softening temperature of the glass powder can be obtained through this curve, so as to determine the heat treatment process of the foam glass. Before 600°C, the curve fluctuates greatly, which may be due to the evaporation of water and the reaction inside the glass powder. There is an endothermic peak around 750°C, but it is not very obvious, so the softening temperature and endothermic peak of the glass cannot be directly determined. It is about 750°C, so the softening temperature of the glass frit is tentatively set at 750°C.

[0023] Such as figure 2 as shown, figure 2 It is the DTA curve of manganese dioxide, through which the decomposition temperature of manganese dioxide can be analyzed to determine whether it can release gas when the glass powder is softened. The DTA curve of manganese dioxide has an endothermic peak at 525-700°C, which is due to the decompo...

Embodiment 2

[0030] Glass powder 100, manganese dioxide 1, sodium fluorosilicate 3, sodium phosphate 3, sodium carbonate 10, carbon fiber 1. The preheating temperature is 430°C, the time is 10 minutes, the foaming temperature is 780°C, the time is 7 minutes, the annealing temperature is 500°C, and the holding time is 30 minutes. The pore size of the prepared foam glass is small, less than 1mm, and the apparent density is 0.552g / cm 3 , The compressive strength is 5.16MPa.

Embodiment 3

[0032] Glass powder 100, manganese dioxide 3, sodium fluorosilicate 5, sodium phosphate 4, sodium carbonate 5, carbon fiber 3. The preheating temperature is 430°C, the time is 15 minutes, the foaming temperature is 750°C, the time is 10 minutes, the annealing temperature is 500°C, and the holding time is 30 minutes. The prepared foam glass has a relatively uniform pore size of about 2mm and an apparent density of 0.546g / cm 3, The compressive strength is 6.08 MPa.

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Abstract

The invention discloses a method for low temperature production of a foam glass product. The method includes: placing the raw material flat glass powder, the foaming agent manganese dioxide, the fluxing agent sodium silicofluoride and sodium carbonate, the foam stabilizer sodium phosphate and carbon fiber into a ball mill to undergo ball milling, preheating the ball milled particles at 430DEG C for 10-20min, controlling the foaming temperature at 750-780DEG C, the heat preservation time at 7-15min, and keeping the annealing temperature at 550DEG C, and the heat preservation time at 30min, and finally conducting cooling to room temperature. Specifically, in terms of the mass of the flat glass powder, the manganese dioxide accounts for 1-5%, the sodium silicofluoride accounts for 3-5%, the sodium carbonate accounts for 3-5%, the sodium phosphate accounts for 5-10%, and the carbon fiber accounts for 1-5%. The foam glass prepared by the invention has a uniform aperture, most of the holes are closed, the performance is excellent, and reaches the use standard. Low temperature firing of foam glass not only can reduce the production cost, but also can greatly improve the production efficiency at the same time.

Description

technical field [0001] The invention discloses a method for producing foam glass products with relatively high strength at low temperature. Background technique [0002] Our country has made some progress in the research of new wall materials. There are many ways to produce foam glass, and the requirements for the performance of foam glass are getting higher and higher. The main raw materials of foam glass are waste glass and fly ash, etc., by adding some other auxiliary materials, after crushing, ball milling and uniform mixing, and then through the process of preheating, melting and softening, foaming and annealing, it is formed with some characteristics such as heat insulation It is a new type of environmentally friendly building material with superior properties such as sound absorption, moisture resistance, and fire prevention. [0003] The raw material of foam glass comes from waste glass, but its foaming temperature is generally high, ranging from 850-1000°C, even as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/08
CPCY02P40/57
Inventor 赵毅红吴龙陈荣发杨华李青青陆华锋李志龙赵杰潘毅刘韬
Owner YANGZHOU UNIV
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