US4271127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the continuous precipitation of uranium peroxide
Assignee: Individual
•
Filing: 1978-10-30
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Granted: 1981-06-02
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Expires: 1998-10-30
Abstract
Abstract A process and apparatus for the production of pourable, directly compactable uranium dioxide powder by continuous precipitation of uranium peroxide from a stirred uranyl nitrate solution at a pH of 1-2.5 with hydrogen peroxide, calcining of the peroxide at 500°-800° C. and subsequent reduction at 550°-750° C. The precipitation solution contains 70-150 g/l of uranium and 0.80 g/l of ammonium nitrate and is treated with 15-20% aqueous hydrogen peroxide solution in the ratio of U:H 2 O 2 from 1:1.5 to 1:3 and there is led through the solution a mixture of ammonia and air having an air-ammonia volume ratio of 1:0.3-0.6.
Inventors
- 👤 Paul Borner
- 👤 Hans-Jorg Isensee
- 👤 Horst Vietzke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:23
CPC Classifications
C; C01; C01G; C01G43/00; C01G43/01; C01G43/025; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/50; C01P2004/60; C01P2004/61; C01P2006/00; C01P2006/10; C01P2006/12; C01P2006/20; C01P2006/80; C01P2006/82
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
137 words
An apparatus for the continuous precipitation of uranium peroxide consisting essentially of a container, a stirrer therein having a rotor cage about 1/3 as large in diameter as the diameter of said container, a first conduit (1) including a first annular nozzle (9) in the container connected to a source of uranyl nitrate, a second conduit (2) including a second annular nozzle (10) in the container connected to a source of ammonia gas-air mixture, and a third conduit (3) including a third annular nozzle (11) in the container connected to a source of aqueous hydrogen peroxide, said second nozzle being located in the container at a distance of 80 to 120 mm above said first nozzle and said third nozzle being located in the container at a distance of 40 to 60 mm above said second nozzle.
Claim 2
Independent Claim
137 words
An apparatus for the continuous precipitation of uranium peroxide consisting essentially of a container, a stirrer therein having a rotor cage about 1/3 as large in diameter as the diameter of said container, a first conduit (1) including a first annular nozzle (9) in the container connected to a source of uranyl nitrate, a second conduit (2) including a second annular nozzle (10) in the container connected to a source of ammonia gas-air mixture, and a third conduit (3) including a third annular nozzle (11) in the container connected to a source of aqueous hydrogen peroxide, said second nozzle being located in the container at a distance of 80 to 120 mm above said first nozzle and said third nozzle being located in the container at a distance of 40 to 60 mm above said second nozzle.
Claim 3
Dependent Claim
12 words
The apparatus of claim 1, wherein the container is a cylindrical container.
References Cited (Backward Citations)
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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) | 1984-06-01 | 1984-12-01 | 1985-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-01 | 1988-12-01 | 1989-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-01 | 1992-12-01 | 1993-06-02 | $7700.00 | Window Closed / Lapsed |