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

Claim 3:
4. The preparation method according to claim 1, wherein in the step of reaction, the molar ratio of a silicate in the silicate leaching solution to calcium hydroxide in the calcium hydroxide suspension is 0.9:1 to 1.1:1, and the silicate leaching solution has a concentration of 0.067-1.067 mol/L; and
the silicate leaching solution is added dropwise to the calcium hydroxide suspension at a constant dropping rate of 15-35 mL/h, the stirring is conducted is a rate of 450-550 rpm, and the heating reaction is conducted at a temperature of 25-70° C. for 2-12 h.