Use of polymers in alumina precipitation in the Bayer process of bauxite beneficiation
US4608237A · kind A · utility
16Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1985 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Nov 13, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/61
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The negative effects of sodium oxylate on the crystallization of aluminum trihydrate from Bayer process liquors may be eliminated or curtailed by adding an effective amount of a polyacrylic acid with a molecular weight about 1,000,000 and containing at least 50 mole percent acrylic acid monomer to pregnant Bayer process liquors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.