Upgrading of zircon
US7744847B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | May 24, 2005 |
| Grant date | Jun 29, 2010 |
| Priority date | — |
| Expiry date | Oct 18, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B1/08
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for upgrading an inferior grade of zircon to a superior grade thereof includes mixing the inferior grade of zircon, in comminuted form, with at least one mineralizer, to obtain a zircon/mineralizer mixture, which is a calcined product. The calcined product is washed, and thereafter, in a comminution step, the washed calcined product is comminuted to obtain a superior grade of zircon, which is suitable for use as a glaze opacifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.