US3692443A
Expired / Lapsed
US
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Apparatus for atomizing molten metal
Assignee: United States Steel Corp
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Filing: 1970-10-29
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Granted: 1972-09-19
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Expires: 1990-10-29
Abstract
Abstract Apparatus for atomizing molten steel or the like into powder in which the molten steel is degassed and then poured in a vertical stream into an atomizing chamber. The metal in the stream is atomized by directing atomizing fluid at the stream.
Inventors
- 👤 Max W Lightner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:38
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
75 words
Apparatus for atomizing molten metal comprising means for degassing the molten metal including a vacuum degassing container, an outlet from said container for forming a smooth and compact stream of molten metal, an atomizing chamber separate from said degassing means and said container, means for delivering the degassed molten metal stream from said outlet to said atomizing chamber, and means in said chamber for directing atomizing fluid at said stream to atomize the molten metal.
Claim 2
Dependent Claim
75 words
Apparatus for atomizing molten metal comprising means for degassing the molten metal including a vacuum degassing container, an outlet from said container for forming a smooth and compact stream of molten metal, an atomizing chamber separate from said degassing means and said container, means for delivering the degassed molten metal stream from said outlet to said atomizing chamber, and means in said chamber for directing atomizing fluid at said stream to atomize the molten metal.
Claim 3
Dependent Claim
45 words
Apparatus according to claim 1 in which said means for directing atomizing fluid includes a circular header surrounding said stream, and a plurality of ports in said header directed inwardly away from the direction of approach of said stream to generally intersect in said stream.
Claim 4
Dependent Claim
46 words
Apparatus according to claim 1 in which said degassing means is a degassing chamber located above said atomizing chamber, and said means for delivering the degassed molten metal is a vertical connection between said chambers whereby a substantially vertical stream of degassed molten metal is provided.
Claim 5
Dependent Claim
37 words
Apparatus according to claim 3 in which said means for directing atomizing fluid includes a circular header surrounding said stream, and a plurality of ports in said header directed inwardly downwardly to generally intersect in said stream.
Claim 6
Dependent Claim
62 words
Apparatus according to claim 4 in which said means for directing atomizing fluid includes a second circular header surrounding said stream below said first named header, and having a larger diameter than said first named header, a plurality of ports in said second header directed inwardly and downwardly to generally intersect in substantially the same horizontal plane as the first named ports.
Claim 7
Dependent Claim
16 words
Apparatus according to claim 5 including means for exhausting said atomizing fluid from said atomizing chamber.
Claim 8
Dependent Claim
38 words
Apparatus according to claim 6 including a bin at the lower end of said atomizing chamber for receiving the atomized metal, and top and bottom valves for controlling flow of said atomized metal to and from said bin.
Claim 9
Dependent Claim
32 words
Apparatus according to claim 1 in which said means for directing atomizing flUid includes a plurality of atomizing gas ports, and means for delivering high pressure atomizing gas to said gas ports.
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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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |