Geopolymer cement material and preparation method thereof
A technology of geopolymer cement and metakaolin, which is applied in the field of geopolymer cement materials and its preparation, and can solve the problems of single basic raw materials and loss
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Embodiment 1
[0029] The spent FCC catalyst F was immersed in ammonium bicarbonate solution with a mass concentration of 10%. The mass ratio of ammonium bicarbonate solution to spent catalyst was 3:1. The material was dried at 100°C for 3 hours and calcined at 500°C for 2 hours to obtain pretreated spent FCC catalyst A; the SEM image of the obtained pretreated spent FCC catalyst A is shown in figure 1 . Depend on figure 1 It can be seen that columnar protrusions are formed on the surface of the spent catalyst.
[0030] The activator is composed of 10 parts by mass of NaOH mixed with 30 parts by mass of water glass, the original modulus of water glass is 3.2, and the modulus is adjusted to 1.8.
[0031] Take 18 parts of pretreated waste FCC catalyst A, 45 parts of metakaolin, and 4 parts of water, and stir evenly, then add 15 parts of the above-mentioned activator, stir evenly, and obtain a geopolymer cement material. Test the setting time of the well-mixed soil-polymer cement material, w...
Embodiment 2
[0033] The spent FCC catalyst F was immersed in ammonium bicarbonate solution with a mass concentration of 15%. The mass ratio of ammonium bicarbonate solution to spent catalyst was 5:1. The material was dried at 110°C for 4 hours and calcined at 550°C for 3 hours to obtain the pretreated spent FCC catalyst B; the spent FCC catalyst B was observed with a scanning electron microscope, and columnar protrusions were formed on its surface.
[0034] The activator is composed of 15 parts by mass of NaOH mixed with 40 parts by mass of water glass, the original modulus of water glass is 3.2, and the modulus is adjusted to 1.6.
[0035] Take 10 parts of pretreated spent FCC catalyst B, 40 parts of metakaolin, and 2 parts of water, and stir evenly, then add 28 parts of the above-mentioned activator, stir evenly, and obtain a geopolymer cement material. Measure coagulation time and intensity with embodiment 1 method. The specific results are shown in Table 1.
Embodiment 3
[0037] The spent FCC catalyst F was immersed in ammonium bicarbonate solution with a mass concentration of 20%, and the mass ratio of ammonium bicarbonate solution to spent catalyst was 10:1, and transferred to a high-pressure container. The treatment time was 6 hours at 100°C, and the treated The material was dried at 120°C for 6 hours and calcined at 600°C for 4 hours to obtain the pretreated spent FCC catalyst C; the spent FCC catalyst C was observed with a scanning electron microscope, and columnar protrusions were formed on its surface.
[0038] Described activator is with embodiment 1.
[0039] Take 8 parts of pretreated waste FCC catalyst, 45 parts of metakaolin, and 10 parts of water, and stir evenly, then add 30 parts of activator, stir evenly, and obtain geopolymer cement material. Measure coagulation time and intensity with embodiment 1 method. The specific results are shown in Table 1.
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