Method for the alteration of siliceous materials from Bayer process liquids
US5314626A · kind A · utility
17Cited by
7References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Aug 3, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F7/0606
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Siliceous materials produced by thermally treating Bayer process liquors are obtained in modified form when produced in the presence of ammonium, aromatic amine, and amine compounds, or compounds bearing ammonium, aromatic amine or amine moieties, such as N-propylamine, pyridine and tetramethylammonium hydroxide. These modified siliceous materials possess morphologies which confer upon them a reduced tendency to deposit on surfaces throughout the process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.