Production of calcined ceramic pigments
US4047970A · kind A · utility
11Cited by
9References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1976 |
| Grant date | Sep 13, 1977 |
| Priority date | — |
| Expiry date | Aug 5, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/60
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The process for producing zirconium based pigments (also known as stains) comprises the direct use of plasma disassociated zirconium sand. The sand is comminuted to a suitable particle size, mixed with a color determining agent such as ammonium metavanadate and a mineralizer such as sodium fluoride, after which the resulting mixture is calcined to bring about a reaction between the zirconium sand and the color determining agent to produce the required pigments. The resulting calcined pigment is then ground to a suitable particle size ready for application to ceramic tiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.