	US 12,187,647 B2
	Electrochemical materials production and processing
Jesse D. Benck, Wakefield, MA (US); Yet-Ming Chiang, Weston, MA (US); Leah D. Ellis, Somerville, MA (US); Kyle Dominguez, Somerville, MA (US); and Mariya Layurova, Somerville, MA (US)
Assigned to Sublime Systems, Inc., Somerville, MA (US)
Appl. No. 18/554,369
Filed by Sublime Systems, Inc., Somerville, MA (US)
PCT Filed Apr. 5, 2022, PCT No. PCT/US2022/023534 § 371(c)(1), (2) Date Oct. 6, 2023, PCT Pub. No. WO2022/216741, PCT Pub. Date Oct. 13, 2022.
Claims priority of provisional application 63/320,527, filed on Mar. 16, 2022.
Claims priority of provisional application 63/271,797, filed on Oct. 26, 2021.
Claims priority of provisional application 63/252,455, filed on Oct. 5, 2021.
Claims priority of provisional application 63/181,053, filed on Apr. 28, 2021.
Claims priority of provisional application 63/171,180, filed on Apr. 6, 2021.
Prior Publication US 2024/0166566 A1, May 23, 2024
Int. Cl. C04B 28/18 (2006.01); C04B 40/00 (2006.01); C25B 1/04 (2021.01); C25B 1/20 (2006.01); C25B 1/34 (2006.01); C25B 15/08 (2006.01); C25C 1/00 (2006.01); C22B 7/00 (2006.01)

CPC C04B 28/18 (2013.01) [C04B 40/0007 (2013.01); C25B 1/04 (2013.01); C25B 1/20 (2013.01); C25B 1/34 (2013.01); C25B 15/081 (2021.01); C25C 1/00 (2013.01); C22B 7/007 (2013.01)]

19 Claims

1. A method for making a lime and a supplementary cementitious material, wherein the lime comprises calcium hydroxide, and wherein the supplementary cementitious material comprises SiO₂, the method comprising:

providing a source of electricity;

selecting an input material to be processed, wherein the input material is a solid comprising at least 40% SiO₂by mass and at least 5% CaO by mass;

using the source of electricity to power an electrochemical reactor that converts an aqueous salt solution into at least one acid solution and at least one base solution;

using the acid solution to dissolve CaO from the input material, forming a suspension of insoluble solid particles comprising SiO₂in an aqueous solution comprising dissolved calcium ions;

separating the insoluble solid particles from the aqueous solution using settling and/or filtration;

using the base solution and the aqueous solution comprising dissolved calcium ions to perform a precipitation reaction, forming a suspension of solid particles comprising calcium hydroxide in an aqueous base-treated solution;

separating the solid particles comprising calcium hydroxide from the aqueous base-treated solution using settling and/or filtration; and

grinding the separated insoluble solid particles to a median major diameter less than about 10 microns and a specific surface area of greater than 10 m²/g such that

the ground insoluble solid particles comprising SiO₂have a calcium hydroxide consumption of greater than 60 g calcium hydroxide per 100 g silicate using a thermogravimetric analysis calcium hydroxide consumption pozzolanic reactivity tests.