A glass-ceramic made from fly ash
A technology of glass-ceramics and fly ash, which is applied in the field of comprehensive utilization and resource utilization of fly ash, can solve the problems of high production energy consumption, low utilization rate of waste residue, long process flow, etc., and achieve excellent performance, high performance, The effect of efficient comprehensive utilization
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example 1
[0058] The specific preparation method is as follows:
[0059] 1) Take fly ash from a place in Xinjiang as all raw materials without adding auxiliary materials, dry it at 105°C for 2 hours, and then perform ball mill classification, take fly ash powder with a particle size of 48 μm and add polyvinyl alcohol with a mass percentage of fly ash of 5% After uniform mixing, the glass-ceramic green body powder is obtained;
[0060] 2) The green body powder is flatly spread in the forming abrasive tool, and the glass-ceramic green body is obtained after holding the pressure at 20 MPa for 30 seconds with a green body forming press.
[0061] 3) Put the glass-ceramic body into the tunnel kiln and raise the temperature directly from room temperature to 950°C at a heating rate of 10°C / min and keep it warm for 30 minutes, then raise the temperature to 1180°C at a heating rate of 5°C / min and keep it warm for 60 minutes. After the furnace cools down, the samples are taken out, polished and t...
example 2
[0064] The specific preparation method is as follows:
[0065]1) Take the fly ash in Example 1 as the main raw material, choose waste glass and perlite as the ingredients, dry the fly ash and the ingredients at 105°C for 2 hours, crush and classify by ball milling, and separate the components according to mass percentage 90% of fly ash, 5% of waste glass, and 5% of perlite are weighed and blended, and the powder with a particle size of 37 μm is added to 5% by mass of glycerin and mixed evenly to obtain a glass-ceramic green body powder;
[0066] 2) The green body powder is flatly spread in the forming abrasive tool, and the green body forming press is used to hold the pressure at 30 MPa for 30 seconds to obtain the glass-ceramic green body.
[0067] 3) Put the glass-ceramic body into the tunnel kiln and raise the temperature directly from room temperature to 1160°C for 60 minutes at a rate of 10°C / min. After cooling down with the furnace, take out the sample, polish it, and tr...
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