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Refining slag carbonation optimized geopolymer and preparation method thereof

A technology of geopolymer and refining slag, applied in cement production and other directions, can solve problems such as poor stability of raw materials, and achieve good mechanical properties and good structural compactness.

Pending Publication Date: 2020-07-03
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a geopolymer optimized for carbonation of refining slag and its preparation method, which overcomes the deficiencies of the prior art above, and can effectively solve the problem of high alkalinity and free CaO in industrial waste refining slag, which cause it to be used as a building block. The problem of poor stability of raw materials such as materials, water conservancy projects, and road projects

Method used

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  • Refining slag carbonation optimized geopolymer and preparation method thereof
  • Refining slag carbonation optimized geopolymer and preparation method thereof
  • Refining slag carbonation optimized geopolymer and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: The geopolymer optimized for carbonation of the refining slag is obtained according to the following steps: in the first step, the required amount of refining slag after grinding and sieving is mixed and stirred with water, and at the same time, CO 2 Carry out carbonation reaction to obtain carbonized refining slag slurry, wherein the weight ratio of refining slag to water is 1:4.5 to 5.5; the second step is to obtain carbonized refining slag slurry after solid-liquid separation and drying; third step , get the required amount of water glass, sodium hydroxide and water and mix and stir to obtain an alkaline liquid activator, wherein the water glass is 22 to 26 parts by weight, and the sodium hydroxide is 38 to 42 parts , water is 58 to 62 parts; the fourth step is to add the required amount of carbonized refining slag and fly ash to the alkaline liquid activator, mix and stir to obtain the geopolymer optimized for carbonation of refining slag, wherein, carb...

Embodiment 2

[0039] Embodiment 2: The geopolymer optimized for carbonation of the refining slag is obtained according to the following steps: in the first step, the required amount of refining slag after grinding and sieving is mixed and stirred with water, and at the same time, CO 2Carry out carbonation reaction to obtain carbonized refining slag slurry, wherein the weight ratio of refining slag to water is 1:4.5 or 5.5; the second step is to obtain carbonized refining slag slurry after solid-liquid separation and drying; third step , get the required amount of water glass, sodium hydroxide and water and mix and stir to obtain an alkaline liquid activator, wherein the water glass is 22 or 26 parts by weight, and the sodium hydroxide is 38 or 42 parts , water is 58 parts or 62 parts; the fourth step is to add the required amount of carbonized refining slag and fly ash to the alkaline liquid activator, mix and stir to obtain the geopolymer optimized for carbonation of refining slag, wherein,...

Embodiment 3

[0040] Embodiment 3: As an optimization of the above embodiment, in the first step, the particle size of the refining slag is 38 μm to 88 μm.

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Abstract

The invention relates to the technical field of geopolymer preparation, and concretely relates to a refining slag carbonation optimized geopolymer and a preparation method thereof. The refining slag carbonation optimized geopolymer is obtained by conducting a carbonation reaction on refining slag to obtain carbonized refining slag and then mixing and stirring an alkaline liquid excitant, the carbonized refining slag and fly ash. The refining slag is subjected to the carbonation reaction, so the problems of poor stability and poor stability of the industrial waste refining slag as a raw material for building materials, water conservancy projects, road engineering and the like due to high alkalinity and free CaO are effectively solved; the carbonized refining slag is used as a raw material for preparing the geopolymer with optimized refining slag carbonation, so reuse of industrial wastes is achieved; and the refining slag carbonation optimized geopolymer prepared in the invention has the advantages of favorable structural compactness and favorable mechanical properties, and can be widely used in the fields of preparation of building materials, wall materials and adsorption materials.

Description

technical field [0001] The invention relates to the technical field of geopolymer preparation, and relates to a geopolymer optimized for carbonation of refining slag and a preparation method thereof. Background technique [0002] Geopolymer is a new type of green high-performance cementitious material, geopolymer is made of AlO 4 and SiO 4 Tetrahedral structural units form an inorganic polymer with a three-dimensional network structure, which is amorphous to semi-crystalline and belongs to non-metallic materials. This material has excellent mechanical properties, acid and alkali resistance, fire resistance, and high temperature resistance. It has the possibility of replacing ordinary Portland cement and can use industrial mineral waste and construction waste as raw materials. It is used in building materials, high-strength materials, It has applications in solid nuclear solid waste materials, sealing materials, and high temperature resistant materials. [0003] At present...

Claims

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Application Information

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IPC IPC(8): C04B12/00C04B7/26C04B7/153
CPCC04B12/005C04B7/243C04B7/1535Y02P40/10
Inventor 伊元荣白书齐杜昀聪马忠乐
Owner XINJIANG UNIVERSITY
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