Compositions and method for foam control and crystal modification in Bayer process
US5275628A · kind A · utility
12Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1993 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Mar 15, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F7/0646
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for defoaming a Bayer process liquor, the method comprising the steps of adding to the Bayer process liquor an effective amount of an antifoam/defoamer composition comprising a water-soluble polypropylene glycol having an average molecular weight of from about 200 to about 600 daltons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.