Sustainable calcium hydroxide production for green cement
US12187621B2 · kind B2 · utility
0Cited by
3References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2021 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Jul 9, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/001
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of making a composition of matter comprising calcium hydroxide. The method includes the steps of contacting a calcium-containing molecule with an aqueous solution of a water-soluble salt having ammonium cation and a counter-anion, under conditions effective to yield a compound containing calcium and the counter-anion; and reacting the compound comprising calcium and the counter-anion with ammonia and water under conditions to yield calcium hydroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.