Silicon-aluminum gelatinized material produced by pulverized fuel ash and application method thereof

Abstract

The invention provides a silicon-aluminum gelatinized material produced by pulverized fuel ash and an application method thereof. In the method, a coal gangue is crushed and ground to obtain a powder body, and the powder body is calcined for 0.5 to 2 hours under the temperature of 500 to 750 DEG C, so as to obtain calcined kaolin clay. Ball milling is carried out on the pulverized fuel ash, lime and the calcined kaolin clay in a ball milling machine according to certain proportion so as to obtain pulverized silicon-aluminum gelatinized material, and then sealing and packaging are carried out. Uniform mixing is carried out according to certain proportion so as to obtain a solid additive, and then sealing and packaging are carried out. When in use, the additive is dissolved in water to prepare additive solution (the proportion of the using quantity of the silicon-aluminum gelatinized material, the additive and the water is 100: (5-10): (40-50), the additive solution is slowly added to the pulverized silicon-aluminum gelatinized material, on-site pouring or forming is carried out after uniform mixing, and then the maintenance is carried out to the specified age under normal temperature (equal to or higher than 20 DEG C). The invention has the following characteristics: sources of raw materials are wide, the production cost is low, the processing is simple, and the implementation and popularization are convenient.

Description

technical field [0001] The invention relates to a silica-alumina gelling material, a production process and an application method thereof. Background technique [0002] Silica-alumina cementitious material is a new type of inorganic non-metallic material based on the theory of mineral polymer materials. The traditional cement industry, because it consumes a lot of resources and energy in the production process, and emits a lot of greenhouse gases and solid dust, is facing huge challenges today when environmental issues are getting more and more attention. Therefore, the production of green cementitious materials is a necessity at present, and it is the first choice for the sustainable development of the industry. At present, coal-fired power plants emit a large amount of solid waste fly ash, most of which are not effectively utilized and are piled up, which not only occupies a large amount of land, but also causes serious pollution of the atmospheric environment and groundw...

AI Technical Summary

Problems solved by technology

At present, coal-fired power plants emit a large amount of solid waste fly ash, most of which are not effectively utilized and are piled up, which not only occupies a large amount of land, but also causes serious pollution of the atmospheric environment and groundwater near the ash yard.

Due to the low pozzolanic activity of fly ash, the production of cementitious materials using fly ash as the main raw material at home and abroad usually requires curing at a temperature of 60-120°C to obtain strength, so it is not suitable for direct use in on-site construction, and it is very difficult to promote. Big

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