A method for producing foam glass products at low temperature

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...

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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

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