Process for purifying sand
US7101524B2 · kind B2 · utility
3Cited by
1References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 19, 2002 |
| Grant date | Sep 5, 2006 |
| Priority date | — |
| Expiry date | Jul 26, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for removing iron impurities from sand by treatment of an aqueous slurry of the sand with a chelating agent for iron cations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.