Lightweight heat-insulating and hydrophobic glass beads for construction and preparation method thereof
A technology for water-repellent glass and construction, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve problems such as unfavorable industrial production, achieve recycling, convenient industrial application, and low water absorption
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Embodiment 1
[0022] The lightweight heat-insulating and hydrophobic glass beads for construction provided in this embodiment include the following components in mass percentages: 72% of clay-formed perlite mining tailings, 10% of expanded perlite micropowder, 5% of soda ash, 1.2% of fluorite powder, green Silicon carbide dust collection powder 0.8%, quicklime powder 1.0%, water glass 10%.
[0023] The specific steps are:
[0024] Grinding and pulverizing the clay-formed perlite mining tailings, the expanded perlite micropowder, the fluorite powder, the soda ash, the green silicon carbide dust collection powder and the quicklime powder into the feeder, Put it into the Raymond mill through a bucket elevator, mix and grind it into powder, and pass through a 100-mesh sieve to obtain raw material powder;
[0025] Humidification and granulation: add the raw material powder into the water glass and mix evenly for humidification, and then granulate the humidified raw material powder to obtain a b...
Embodiment 2
[0030] The difference between this example and Example 1 is that the lightweight heat-insulating and hydrophobic glass beads for construction include the following components in mass percentages: 77% of clay-formed perlite mining tailings, 5% of expanded perlite micropowder, Soda ash 3%, fluorite powder 2%, green silicon carbide dust collection powder 0.7%, quicklime powder 0.3%, water glass 12%;
[0031] The step of making beads by puffing includes: the dried and preheated particles are lifted to the top of the puffing furnace by a bucket elevator, and put into the puffing furnace at 1250°C through a flow divider, and vitrified and expanded for 17 s to obtain the light weight for construction. Insulation and hydrophobic glass beads;
[0032] The lightweight heat-insulating and hydrophobic glass beads for construction are closed-cell glass beads, and the bulk density is 126 kg / m after testing. 3 , the particle size is 8-16 mesh, the thermal conductivity is 0.052 W / (m.K), the ...
Embodiment 3
[0034] The difference between this example and Example 1 is that the lightweight heat-insulating and hydrophobic glass beads for construction include the following components in mass percentages: 62% of clay-formed perlite mining tailings, 20% of expanded perlite micropowder, Soda ash 5%, fluorite powder 2%, green silicon carbide dust collection powder 1%, quicklime powder 0.5%, water glass 9.5%;
[0035] The step of making beads by puffing includes: the dried and preheated particles are lifted to the top of the puffing furnace by a bucket elevator and put into the puffing furnace at 1230°C through a flow divider, and vitrified and expanded for 20 s to obtain the lightweight Insulation and hydrophobic glass beads;
[0036] The lightweight heat-insulating and hydrophobic glass beads for construction are closed-cell glass beads. After testing, the bulk density is 124 kg / m 3 , the particle size is 8-16 mesh, the thermal conductivity is 0.048 W / (m.K), the volume water absorption ...
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Abstract
Description
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