Process for extracting and purifying naturally occurring zeolite
US7004328B2 · kind B2 · utility
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55Claims
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Key dates
| Filing date | Aug 22, 2003 |
| Grant date | Feb 28, 2006 |
| Priority date | — |
| Expiry date | Nov 8, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B39/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for extracting and purifying naturally occurring zeolite from ores in the presence of other mineral phases by using mechanical dispersion and differential suspension to remove a majority of the clay content of the ore. The process continues by removal of contaminants with a higher mass to surface area ratio than that of the desired zeolite product by employing the properties of demineralized water in combination with a countercurrent flow separation column. No chemical flocculating or flotation agents need be employed in the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.