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A kind of geopolymer cement material and preparation method thereof

A technology of geopolymer cement and metakaolin is applied in the field of geopolymer cement material and its preparation method, which can solve the problems of single basic raw material and loss, and achieve the effects of improving compressive strength and flexural strength, avoiding loss and improving performance.

Active Publication Date: 2022-07-12
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 slag and 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 geopolymer cement basic raw materials. A single problem can better promote the popularization and application of geopolymer cement

Method used

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  • A kind of geopolymer cement material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The waste FCC catalyst F was immersed in an ammonium bicarbonate solution with a mass concentration of 10%, and the mass ratio of the ammonium bicarbonate solution to the waste catalyst was 3:1, transferred to a high-pressure container, and the treatment time at 100 °C was 3 hours. The material was dried at 100°C for 3 hours and calcined at 500°C for 2 hours to obtain pretreated waste FCC catalyst A; the SEM image of the obtained pretreated waste 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.

[0032] The activator is composed of 10 parts by mass of NaOH and 30 parts by mass of water glass, the original modulus of the water glass is 3.2, and the modulus is adjusted to 1.8.

[0033] Take 18 parts of pretreated waste FCC catalyst A, 25 parts of metakaolin, 8 parts of slag, and 4 parts of water, stir evenly, then add 25 parts of the above-mentioned activator, stir evenly, ...

Embodiment 2

[0035] The waste FCC catalyst F was immersed in an ammonium bicarbonate solution with a mass concentration of 15%, and the mass ratio of the ammonium bicarbonate solution to the spent catalyst was 5:1, transferred to a high-pressure container, and the treatment time at 105 °C was 5 hours. The material was dried at 110°C for 4 hours and calcined at 550°C for 3 hours to obtain pretreated waste FCC catalyst B; the waste FCC catalyst B was observed with a scanning electron microscope, and columnar protrusions were formed on its surface.

[0036] The activator is composed of 15 parts by mass of NaOH and 40 parts by mass of water glass, the original modulus of the water glass is 3.2, and the modulus is adjusted to 1.6.

[0037] Take 12 parts of pretreated waste FCC catalyst B, 30 parts of metakaolin, 12 parts of slag, and 2 parts of water, stir evenly, then add 30 parts of the above-mentioned activator and stir evenly to obtain geopolymer cement material. The setting time and streng...

Embodiment 3

[0039] The waste FCC catalyst F was immersed in an ammonium bicarbonate solution with a mass concentration of 20%, and the mass ratio of the ammonium bicarbonate solution to the spent catalyst was 10:1, transferred to a high-pressure container, and the treatment time at 100 °C was 6 hours. The material was dried at 120°C for 6 hours, and calcined at 600°C for 4 hours to obtain pretreated waste FCC catalyst C; the waste FCC catalyst C was observed by scanning electron microscope, and columnar protrusions were formed on its surface.

[0040] The activator is the same as in Example 1.

[0041] Take 8 parts of pretreated waste FCC catalyst, 32 parts of metakaolin, 15 parts of slag, and 5 parts of water, stir evenly, then add 25 parts of activator, stir evenly to obtain geopolymer cement material. The setting time and strength were measured in the same manner as in Example 1. 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. Described geopolymer cement material, by weight, comprises the following components: 15-35 parts of metakaolin, 5-25 parts of slag, 3-23 parts of waste catalyst, 10-42 parts of activator, 2-16 parts of water . The geopolymer cement material of the invention can turn waste slag and waste catalyst into treasure, not only has good compressive strength and flexural strength, but also can avoid the loss of metal pollutants in the waste catalyst, and solves the problem of the basic raw material of geopolymer cement. A single problem can better promote the popularization and application of geopolymeric cement.

Description

technical field [0001] The invention relates to a geopolymer cement material and a preparation method thereof. Background technique [0002] Geopolymer cement is a new type of high-performance inorganic polymer material, and it is the most promising class of alkali-activated cementitious materials. Geopolymer cement has been widely used 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 geopolymeric cement are the same as those of cement and ceramics, but compared with cement and ceramics, geopolymeric cement has great advantages: (1) The manufacture of geopolymeric cement materials does not require high temperature calcination or sintering, and the geopolymerization reaction It can be completed at room temperature to 150 ℃, and there is almost no NO in the production process 2 , SO 2 and CO production, CO 2 (2) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B12/00C04B7/153
CPCC04B12/005C04B7/1535Y02P40/10
Inventor 刘淑鹤方向晨王学海王宽岭汪鹏
Owner CHINA PETROLEUM & CHEM CORP
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