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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

Active Publication Date: 2020-10-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The geopolymer cement material of the present invention can turn waste catalysts into treasures, not only has good compressive strength and flexural strength, but also can avoid the loss of metal pollutants in waste catalysts, and solves the problem of a single basic raw material of geopolymer cement. problems, can better promote the popularization and application of geopolymeric cement

Method used

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  • Geopolymer cement material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

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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Abstract

The invention discloses a geopolymer cement material and a preparation method thereof. The geopolymer cement material is prepared from the following components in parts by weight: 25 to 50 parts of metakaolin, 5 to 25 parts of waste catalyst, 10 to 40 parts of excitant and 2 to 15 parts of water. According to the geopolymer cement material disclosed by the invention, the waste catalyst can be turned into wealth, the geopolymer cement material not only has good compressive strength and flexural strength, but also can avoid loss of metal pollutants in the waste catalyst, the problem of single basic raw material of geopolymer cement is solved, and popularization and application of the geopolymer cement can be better promoted.

Description

technical field [0001] The invention relates to a geopolymer cement material and a preparation method thereof. Background technique [0002] Geopolymeric cement is a new type of high-performance inorganic polymer material, and it is the most promising type of alkali-activated cementitious materials. Geopolymeric cement has been widely used now, in building materials, high-strength materials, nuclear solid waste materials, Sealing materials and high temperature resistant materials have shown great application prospects. Most of the application fields of geopolymer cement are the same as cement and ceramics, but compared with cement and ceramics, geopolymer cement has great advantages: (1) The manufacture of geopolymer cement materials does not require high-temperature calcination or sintering, and the geopolymerization reaction It can be completed at room temperature to 150°C, and there is almost no NO in the production process 2 , SO 2 and CO produced, CO 2 The emissions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B12/00C04B7/24
CPCC04B7/243C04B12/005Y02P40/10
Inventor 刘淑鹤方向晨王学海王宽岭汪鹏
Owner CHINA PETROLEUM & CHEM CORP
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