Process for accelerating the digestion and sedimentation steps on the Bayer alumina process
US4226838A · kind A · utility
2Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1979 |
| Grant date | Oct 7, 1980 |
| Priority date | — |
| Expiry date | Jan 24, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F7/38
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An improved process for accelerating the digestion process in the Bayer alumina process is provided which promotes both the goethite-hematite conversion and a more perfect and quick dissolution of the diaspore. The above is achieved by carrying out the digestion in the process of 5-20% by weight calculated on the dry weight of the bauxite of a novel hydrogarnet catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.