Production of low carbon footprint magnesia
US11401168B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jul 20, 2017 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Oct 5, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B32/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing magnesia can include contacting CO2-containing emissions with a magnesium-containing material to produce magnesium carbonate; subjecting the magnesium carbonate to calcination to produce a CO2 by-product and magnesia; and recycling at least a portion of the CO2 by-product for contacting the magnesium-containing material to produce the magnesium carbonate. The magnesium-containing material can include mining residues, such as phyllosilicate or chrysotile mining residue, and the magnesium carbonate produced can include precipitated nesquehonite that is subjected to calcination to produce the magnesia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.