Oxidation of polythionates
US4582690A · kind A · utility
5Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1984 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | Aug 6, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/725
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Thiosalts contained in waste streams are oxidized to sulfate ions in the presence of sulfur-bound copper. Air oxidation of the waste stream is effected in a slurry of the copper compound, which may be CuS, Cu.sub.2 S or chalcopyrite, and continuous long term operation is possible without loss of catalytic activity and without catalyst degradation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.