Silver recovery
Abstract
Abstract EQUIPMENT AND METHOD FOR RECOVERING SILVER FROM A SILVER CONTAINING SOLUTION. THE EQUIPMENT COMPRISES A CONTAINER AND A CONNECROR HAVING AN INFLUENT LIQUID PASSAGE AND AN EFFLUENT LIQUID PASSAGE. A RECOVERY ELEMENT MADE OF A METAL ABOVE SILVER IN THE ELECTROMOTIVE FORCE SERIES FITS WITHIN THE CONTAINER TO FORM AN ELECTROLYTIC CELL. THE METAL FORMING THE ELEMENT IS ARRAGED IN A WOVEN MATRIX, SUCH AS, FOR EXAMPLE, GALVANIZED WINDOW SCREEN, WHICH IS WOUND AROUND ITS AXIS WHICH IS COMMON WITH THE AXIS OF THE CONTAINER TO FORM A HOLLOW CYLINDER HAVING AN INSIDE SURFACE AND AN OUTSIDE SURFACE AND WHICH IS PERVIOUS ONLY TRANSVERSELY IN RESPECT TO THE CONTAINER. ONE OF THE PASSAGES IS IN LIQUID COMMUNICATION WITH THE INSIDE SURFACE OF THE ELEMENT, AND THE OTHER PASSAGE IS IN LIQUID COMMUNICATION WITH THE OUTSIDE SURFACE OF THE ELEMENT. THE SOLUTION PRECIPITATES SILVER IN EXCHANGE FOR THE METAL OF THE WOVEN MATRIX, WITHOUT CLOGGING OF THE CELL.
Inventors
- 👤 B Mackay
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |