Energy efficient self-regulating process for winning copper from aqueous solutions
US4367128A · kind A · utility
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7References
9Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 5, 1981 |
| Grant date | Jan 4, 1983 |
| Priority date | — |
| Expiry date | Mar 5, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C1/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention is predicated upon the discovery that in the electrowinning of copper from solutions thereof, a hydrogen fed porous catalytic anode can be caused to operate under such conditions of constant current flow whereby a dynamic equilibrium will be imposed upon the hydrogen fed anode so that the anode will behave as a normal copper anode in a refining mode. This is particularly true when such a hydrogen fed anode is deactivated by copper buildup on the surface of the electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.