A kind of foam glass prepared by using high-alumina, alkali-free and boron-free glass fiber waste and its manufacturing method
A glass fiber and foam glass technology, which is applied in the field of foam glass and its manufacturing, can solve the problems of incomplete foaming of foam glass, inability to provide oxygen, and high material density, and achieve low production cost, thin bubble wall and high quality. Excellent performance
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[0026] The embodiment of the present invention adopts alkali-free boron-free and high aluminum (containing Al 2 o 3 16wt%) glass fiber waste as the main raw material. The raw material composition of foam glass of each embodiment is as shown in Table 1.
[0027] Table 1 Raw material composition (wt%) of cellular glass of each embodiment of the present invention
[0028]
[0029] The manufacture method of cellular glass of the embodiment of the present invention, its steps are as follows:
[0030] a. Clean, dry, ball mill and pass through a 250-mesh sieve to obtain glass powder;
[0031] b. Add glass powder and various components into a ball mill and mill for 2 hours to form a foam glass batch;
[0032] c. Add the foam glass batch material into the heat-resistant steel mold, and put it into the foaming furnace for the following foaming process:
[0033] In the preheating stage, the temperature is raised from room temperature to 300-500°C at a rate of 1-5°C / min, and the tem...
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