High pore volume alumina powders
US4218413A · kind A · utility
3Cited by
1References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1978 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | Dec 18, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for increasing the pore volume of alumina powder produced by spray drying alumina slurries by heating the slurry to a temperature near the boiling point of water and a pressure up to the critical point of water then introducing the slurry to a spray drying chamber through a small orifice, thereby creating a backpressure in excess of slurry vapor pressure and up to the critical point of water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.