Foamed heat insulation material and preparation method thereof

[0044] This embodiment relates to a foam insulation material, including the following raw materials in parts by weight: 40 parts of fly ash, 60 parts of discarded ordinary flat glass powder, 10 parts of borax, and 1 part of limestone;

[0045] The present embodiment also relates to the preparation method of the thermal insulation material, comprising the following steps: (the preparation flow chart is shown in figure 1 )

[0046] 1) Mix high-alumina fly ash, discarded ordinary flat glass powder, borax and limestone, add an equal amount of water and carry out wet grinding and mixing for 6-10 hours until the particle size of the material is 40-48 μm to obtain a slurry;

[0047] 2) drying the slurry at 100° C. to obtain a mixed powder, granulating, and then adopting a dry pressing method to press and form at 15 MPa to obtain a green body;

[0048] 3) Put the green body into a high-temperature furnace with a heating rate of 3°C / min, sinter at 850°C for 0.5h, and cool down to room

[0050] This embodiment relates to a foam insulation material, including the following raw materials in parts by weight: 45 parts of fly ash, 55 parts of discarded ordinary flat glass powder, 20 parts of borax, and 0.5 part of limestone;

[0051] The present embodiment also relates to a preparation method of the thermal insulation material, comprising the steps of:

[0052] 1) Mix high-alumina fly ash, discarded ordinary flat glass powder, borax and limestone, add an equal amount of water and carry out wet grinding and mixing for 6-10 hours until the particle size of the material is 35-40 μm to obtain a slurry;

[0053]2) drying the slurry at 120° C. to obtain a mixed powder, granulating, and then adopting a dry pressing method to press and form at 14 MPa to obtain a green body;

[0054] 3) Put the green body into a high-temperature furnace with a heating rate of 5°C / min, sinter at 800°C for 1 hour, and cool down to room temperature with the furnace, then cut off the irregular e

[0056] This embodiment relates to a foam insulation material, including the following raw materials in parts by weight: 50 parts of fly ash, 50 parts of discarded ordinary flat glass powder, 30 parts of borax, and 1.5 parts of limestone;

[0057] The present embodiment also relates to a preparation method of the thermal insulation material, comprising the steps of:

[0058] 1) Mix high-alumina fly ash, discarded ordinary flat glass powder, borax and limestone, add an equal amount of water and carry out wet grinding and mixing for 6-10 hours until the particle size of the material is 25-35 μm to obtain a slurry;

[0059] 2) drying the slurry at 110° C. to obtain a mixed powder, granulating, and then adopting a dry pressing method to press and form at 16 MPa to obtain a green body;

[0060] 3) Put the green body into a high-temperature furnace with a heating rate of 5°C / min, sinter at 900°C for 0.5h, and cool down to room temperature with the furnace, and then cut off the irregul