Reactor for preparing metal powders
Abstract
Abstract A reactor for preparing metal powders by reduction of aqueous solutions with a sodium borohydride solution, which reactor comprises a reaction vessel closed by a cover and having two inlet members, a stirring device, an overflow and a cooling jacket. A gas outlet is connected to the cover on the side of the overflow said gas outlet enclosing an acute angle with the shaft of the stirring device. In the operating position of the reactor, the center line of the gas outlet extends vertically so that the hydrogen formed during the reaction and the poisonous diborane formed in a subreaction are removed without hindrance. Due to the inclined position of the stirring device, the precipitated metal powder and the mother liquor are swung into the overflow.
Inventors
- 👤 W Muhlpfordt
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |