US 11,939,264 B1
Preparation method for hydrothermal synthesis of fly ash silicate aggregate
Shengqiang Chen, Zhengzhou (CN); Zhuhe Zhai, Zhengzhou (CN); Bing Zhang, Zhengzhou (CN); Linjian Shangguan, Zhengzhou (CN); Ruixiao Chen, Zhengzhou (CN); Luyang Li, Zhengzhou (CN); Ge Yang, Zhengzhou (CN); Ming Han, Zhengzhou (CN); Guowang Li, Zhengzhou (CN); Rui Yin, Zhengzhou (CN); Tingting Wang, Zhengzhou (CN); Yongchuan Liu, Zhengzhou (CN); and Dan Chen, Zhengzhou (CN)
Assigned to Henan Building Materials Research and Design Institute Co., Ltd., Zhengzhou (CN)
Filed by Henan Building Materials Research and Design Institute Co., Ltd., Zhengzhou (CN)
Filed on Sep. 27, 2023, as Appl. No. 18/373,521.
Claims priority of application No. 202211467096.3 (CN), filed on Nov. 22, 2022.
Int. Cl. C04B 18/08 (2006.01); C04B 20/06 (2006.01)
CPC C04B 18/08 (2013.01) [C04B 20/068 (2013.01)] 8 Claims
 
1. A preparation method for hydrothermal synthesis of fly ash silicate aggregate, comprising the following steps:
preparing an inorganic-organic composite activator, and a preparation method thereof is as follows:
preparing an inorganic-organic hybrid excitation monomer, which is prepared through a thiol-alkenyl chemical reaction between a thiol group of octathiol polysilsesquioxane and an alkenyl group of butenol monomer;
weighing 1 to 2 parts by weight of sodium metasilicate, 2 to 10 parts by weight of potassium hydroxide, and 0.3 to 1.5 parts by weight of inorganic-organic hybrid excitation monomer to obtain the inorganic-organic composite activator;
preparing a silicate aggregate raw material, which comprises: fly ash 55% to 75%, carbide slag 15% to 25%, quicklime 10% to 20%, expanded perlite 3% to 5%, vitrified micro bubble 0.55% to 1.50%, and inorganic-organic composite activator 0.05 to 0.2%;
mixing measured fly ash, carbide slag, quicklime, and vitrified micro bubble, and adding the inorganic-organic composite activator according to the mass ratio to continue stirring to produce a mixture;
forming a ball disc, wetting the expanded perlite that forms a core of the ball by spraying water, adding a prepared mixture, spraying water while adding, standing and curing, performing a maturation and activation treatment in an autoclave, undergoing a silica calcium reaction for a hydrothermal synthesis to obtain the fly ash silicate aggregate.