Lithium extraction process and apparatus
US11873540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2021 |
| Grant date | Jan 16, 2024 |
| Priority date | — |
| Expiry date | Jan 1, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of extracting lithium from a lithium-bearing material including:(i) mixing the lithium-bearing material, gypsum, a sulfur-containing material, and a calcium-containing material and forming a feed mixture having a moisture content of at least 20 wt %;(ii) drying the feed mixture to form a dried mixture having a moisture content of less than 20 wt %;(iii) roasting the dried mixture and forming a roasted mixture including a water-soluble lithium compound; and(iv) leaching lithium from the water-soluble lithium compound and forming a lithium-containing leachate by mixing the aqueous solution and the water-soluble lithium compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.