Patent ID: 11918972
Assignee: DECARBON TECHNOLOGY (SHENZHEN) CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A preparation method of a porous calcium silicate hydrate, wherein the preparation method comprises the following steps:
leaching: leaching fly ash with an alkali agent to obtain a silicate leaching solution;
reaction: adding the silicate leaching solution dropwise to a calcium hydroxide suspension at a constant rate, and conducting stirring and a heating reaction to obtain a calcium silicate hydrate gel, wherein the dropping rate of the silicate leaching solution is 15-35 mL/h, wherein the temperature of the heating reaction is 25-70° C.; and
pore expanding: mixing the calcium silicate hydrate gel with an organic alcohol solvent, conducting azeotropic distillation, and then conducting separation, drying and calcination to obtain the porous calcium silicate hydrate, wherein the obtained porous calcium silicate hydrate are substantially of an amorphous form.