In situ method for producing hydrosulfite beach and use thereof
US5145814A · kind A · utility
4Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Oct 11, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for reacting metallic iron with sulfur dioxide (SO.sub.2) gas in the presence of water and bleachable matter, especially iron-contaminated kaolin clay, whereby the kaolin or the like is bleached in situ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.