Rocks and aggregate, and methods of making and using the same

Details Rocks and aggregate, and methods of making and using the same Rocks and aggregate, and methods of making and using the same

C - Chemistry, Metallurgy

01

F

C01F 11/18 (2006.01) B01D 53/62 (2006.01) C01B 31/24 (2006.01) C01F 5/24 (2006.01) C04B 28/00 (2006.01) C02F 1/52 (2006.01)

Patent

CA 2670049

Compositions comprising synthetic rock, e.g., aggregate, and methods of producing and using them are provided. The rock, e.g., aggregate, contains CO2 and/or other components of an industrial waste stream. The CO2 may be in the form of divalent cation carbonates, e.g., magnesium and calcium carbonates. Aspects of the invention include contacting a CO2 containing gaseous stream with a water to dissolve CO2, and placing the water under precipitation conditions sufficient to produce a carbonate containing precipitate product, e.g., a divalent cation carbonate.

La présente invention concerne des compositions comprenant une roche synthétique, par exemple un agrégat, et leurs procédés de production et d'utilisation. La roche, par exemple un agrégat, contient du CO2 et/ou d'autres composants provenant d'un flux de déchets industriels. Le CO2 peut se présenter sous la forme de carbonates combinés avec des cations divalents, tels que les carbonates de magnésium et de calcium. Certains aspects de l'invention consistent à mettre en contact du CO2 contenant un flux gazeux avec de l'eau afin de dissoudre le CO2, puis à placer l'eau dans des conditions de précipitation suffisantes pour produire un carbonate renfermant un produit précipité, tel qu'un carbonate combiné avec des cations divalents.

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