Process for purifying alumina
US4717550A · kind A · utility
4Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1986 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Oct 9, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The iron content of Bayer process streams is reduced by contacting said stream with a tertiary hydroxyl-containing polyamine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.