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Method for predicting active silica-alumina ratio of alkali heat activated geopolymer raw material

An active silicon-alumina and geopolymer technology, which is applied in measurement devices, analytical materials, material analysis using wave/particle radiation, etc. Large and other problems, to achieve the effect of eliminating costs and procedures, simple operation process, and wide application range

Pending Publication Date: 2022-03-01
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, it is necessary to provide a method for predicting the active silicon-aluminum ratio of alkali-thermally activated polymer raw materials, so as to solve the problem of complex solid waste raw materials, low content of active silicon-aluminum components, and different solid waste raw materials in the prior art. Difficult technical problems in promoting the preparation of geopolymers

Method used

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  • Method for predicting active silica-alumina ratio of alkali heat activated geopolymer raw material
  • Method for predicting active silica-alumina ratio of alkali heat activated geopolymer raw material
  • Method for predicting active silica-alumina ratio of alkali heat activated geopolymer raw material

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Embodiment 1

[0038] A method for predicting the active silicon-aluminum ratio of the polymer raw material activated by alkali heat, comprising the following steps:

[0039] (1) Use X-ray fluorescence spectrometer to test the chemical composition of shale vanadium extraction tailings, fly ash, and silica fume to obtain the silicon-aluminum mass fraction of the silicon-aluminum raw material. The results are shown in Table 1;

[0040] (2) The mass ratio of the three raw materials is 100:0:4, 90:10:4, 80:20:4, 70:30:4, 60:40:4, 50:50:4 corresponding to 6 groups Mix the raw materials, and calculate the raw material silicon-aluminum molar ratios of the 6 groups of mixed raw materials respectively, which are recorded as M1, M2, M3, M4, M5, and M6, and the results are shown in Table 2;

[0041] (3) Mix the above-mentioned 6 groups of mixed raw materials with NaOH accounting for 25% of the mass of each group of mixed raw materials, mix and stir evenly, and perform an alkali heat activation treatmen...

Embodiment 2

[0050] A method for predicting the active silicon-aluminum ratio of the polymer raw material activated by alkali heat, comprising the following steps:

[0051] (1) Use an X-ray fluorescence spectrometer to test the chemical composition of fly ash, granite powder, and sludge to obtain the silicon-aluminum mass fraction of the silicon-aluminum raw material. The results are shown in Table 3;

[0052] (2) The mass ratio of the three raw materials is 80:10:10, 60:20:20, 40:30:30, 20:40:40, 40:50:10, 20:60:20, 20:70 :10, 10:80:10 to obtain the corresponding 8 groups of mixed raw materials, and calculate the raw material silicon aluminum molar ratio of 8 groups of mixed raw materials, recorded as M1, M2, M3, M4, M5, M6, M7, M8, the results are shown in Table 4 ;

[0053] (3) Mix the above-mentioned 8 groups of mixed raw materials with NaOH accounting for 15% of the mass of each group of mixed raw materials, mix and stir evenly, undergo alkali heat activation treatment at 600 ° C for...

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Abstract

The invention relates to a method for predicting the active silicon-aluminum ratio of an alkali heat activated geopolymer raw material. The method comprises the following steps: determining the silicon content and the aluminum content in a silicon-aluminum raw material; mixing the silicon-aluminum raw materials according to different proportions to obtain n groups of mixed raw materials, and calculating the raw material silicon-aluminum molar ratio of the n groups of mixed raw materials; carrying out alkali heat activation treatment on the mixed raw materials to obtain activated materials, testing the content of raw material active silicon-aluminum in the activated materials, and calculating the raw material active silicon-aluminum molar ratio of the n groups of mixed raw materials; establishing a prediction model of the raw material silicon-aluminum molar ratio and the raw material active silicon-aluminum molar ratio; and predicting the raw material active silicon-aluminum molar ratio of the silicon-aluminum raw material in different proportions according to the linear equation. The method for predicting the active silica-alumina ratio of the alkali heat activated geopolymer raw material, provided by the invention, can be suitable for various raw materials for preparing the geopolymer, is simple in operation flow, convenient to operate, economical, efficient and wide in application range, and has a huge guiding value for alkali activation treatment of the raw material and the preparation process of the geopolymer.

Description

technical field [0001] The invention relates to the technical field of geopolymer preparation, in particular to a method for predicting the active silicon-aluminum ratio of alkali-thermally activated geopolymer raw materials. Background technique [0002] Geopolymers are new inorganic polymer materials synthesized by the reaction between aluminosilicates and alkali metal compounds at or near ambient temperature, and are considered to be the third generation after lime and ordinary Portland cement cement. Due to its simple production process, low impact on the environment, and excellent mechanical properties, durability, high temperature resistance, and solidification of heavy metal ions, it can be used as a variety of building materials, refractory ceramics, composite materials, substrates for immobilizing toxic waste, and many other materials. rapidly emerging material usage. [0003] Natural mineral raw materials such as metakaolin are widely used as raw materials for pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223G01N23/2202
CPCG01N23/223G01N23/2202
Inventor 包申旭徐贤庆张一敏罗勇鹏
Owner WUHAN UNIV OF TECH
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