Method of thiourea addition of electrolytic solutions useful for copper refining
US4474649A · kind A · utility
3Cited by
11References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 1983 |
| Grant date | Oct 2, 1984 |
| Priority date | — |
| Expiry date | Jul 19, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C1/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for precise controlling of thiourea concentrations in a copper sulfate, sulfuric acid solution used in copper refining has permitted improvements in tankhouse current efficiencies and the quality of the refined copper deposited on the cathodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.