Method for the formation of alumina spheres
US4116882A · kind A · utility
10Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 14, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Dec 14, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/503
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Alumina spheres are formed by peptizing alumina slurries, centrifugates, and filtercakes, aging and dropping the peptized material through a hydrocarbon filled column. The improved method avoids the drying and reslurrying of alumina powders currently used and provides a method whereby harmful ions such as chloride and sulfates can be excluded from the alumina.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.