Foam glass used for continuous furnace thermal insulation layer, and preparation method thereof
A foam glass and insulation layer technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve problems such as uneven foaming, affecting the strength of foam glass, reducing the strength and thermal conductivity of foam glass, and achieving various The effect of excellent performance
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[0024] Example 1:
[0025] A foam glass for continuous furnace insulation layer, and its preparation method is as follows:
[0026] Step 1. The raw material waste glass, the foaming agent calcium carbonate, the fluxing agent sodium fluorosilicate, and the stabilizer sodium phosphate are sent to the ball mill in the ball mill, and the particle size after ball milling is 150 meshes to obtain the mixture. Among them, the waste glass is flat glass powder, made of SiO 2 , Al 2 O 3 , CaO, MgO, Na 2 O, K 2 O composition, and SiO 2 , Al 2 O 3 , CaO, MgO, Na 2 O, K 2 The weight content of O is 75%, 2.5%, 3%, 4.5%, 10%, and 5%; the mass percentages of calcium carbonate, sodium fluorosilicate and sodium phosphate are 1%, 6%, and 7%, respectively.
[0027] Step 2: Send the ground mixture into a high temperature resistant mold, preheat at 450°C for 25min, then heat up to 850°C for foaming, and keep it warm for 40min, then lower the temperature to 530°C for annealing, keep it warm for 60min, and f...
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[0029] Example 2:
[0030] A foam glass for continuous furnace insulation layer, and its preparation method is as follows:
[0031] Step 1. The raw material waste glass, the foaming agent calcium carbonate, the fluxing agent sodium fluorosilicate, and the stabilizer sodium phosphate are sent to the ball mill in the ball mill, and the particle size after ball milling is 150 meshes to obtain the mixture. Among them, the waste glass is flat glass powder, made of SiO 2 , Al 2 O 3 , CaO, MgO, Na 2 O, K 2 O composition, and SiO 2 , Al 2 O 3 , CaO, MgO, Na 2 O, K 2 The weight content of O is 75%, 2.5%, 3%, 4.5%, 10%, 5%; the mass percentages of calcium carbonate, sodium fluorosilicate, and sodium phosphate are 0.8%, 6%, and 7%, respectively.
[0032] Step 2. Send the ground mixture into a high temperature resistant mold, preheat at 450°C for 30min, then heat up to 860°C for foaming, and hold for 45min, then cool to 500°C for annealing, hold for 50min, and finally cool down with the furnace ...
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