Preparation method for hydrothermally synthesizing fly ash silicate aggregate

The invention relates to the technical field of silicate aggregate hydro-thermal synthesis, and discloses a preparation method for hydro-thermally synthesizing fly ash silicate aggregate, which comprises the following steps of: compounding sodium silicate nonahydrate, potassium hydroxide and an inorganic-organic hybrid excitation monomer serving as raw materials to obtain an inorganic-organic compound type exciting agent; the preparation method comprises the following steps: preparing raw materials of silicate aggregate, stirring the metered fly ash, carbide slag, quick lime and vitrified microbeads, adding the inorganic-organic compound type exciting agent, and continuously stirring to prepare a mixture; the forming method comprises the following steps: spraying water to wet the pellet core expanded perlite by adopting a pelletizing disc, adding the prepared mixture, spraying water while adding, standing for curing, entering a still kettle for curing and activating, and carrying out silicon-calcium reaction