Electrowinning apparatus and process
US8202411B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 2008 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Jan 6, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C7/002
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Apparatus and processes are disclosed for electrowinning metal from a fluid stream. A representative apparatus comprises at least one spouted bed reactor wherein each said reactor includes an anolyte chamber comprising an anode and configured for containing an anolyte, a catholyte chamber comprising a current collector and configured for containing a particulate cathode bed and a flowing stream of an electrically conductive metal-containing fluid, and a membrane separating said anolyte chamber and said catholyte chamber, an inlet for an electrically conductive metal-containing fluid stream; and a particle bed churning device configured for spouting particle bed particles in the catholyte chamber independently of the flow of said metal-containing fluid stream. In operation, reduced heavy metals or their oxides are recovered from the cathode particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.