Process for production of hydraulic-carbonating binder systems through mechanochemical activation of minerals
US12157709B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2023 |
| Grant date | Dec 3, 2024 |
| Priority date | — |
| Expiry date | Sep 19, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B28/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Described herein are processes for synthesizing hydraulic-carbonating binder systems through mechanochemical process, including providing a blend of material stream one of aluminosilicate or calcium aluminosilicate mineral material and material stream two of alkaline-rich mineral material; and simultaneously fractioning the blended minerals while contacting the blended minerals with a CO2-containing in the mechanochemical reactor. This binder system is useful for cementation functions in concrete. The precipitated carbonation products are mainly calcium carbonates (CaCO3), magnesium carbonates (MgCO3), and amorphous alumina-silica gel. The developed binder system is activated through hydration and/or concurrent hydration-carbonation reactions in concrete and it can be utilized in the form of slurry or dried powder for a wide range of precast and cast-in-place or ready-mix concrete applications. The binder system reacts with cement in concrete to form carbonate/calcium-silicate-hydrate (C—S—H) composite phases that result in enhanced mechanical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.