US3724830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molten metal reactor vessel
Assignee: Union Carbide Industrial Gases Technology Corp
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Filing: 1970-12-02
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Granted: 1973-04-03
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Expires: 1990-12-02
Abstract
Abstract There is provided an improved reactor for the refining of molten metals, including an improved reaction vessel generally circular in cross section for holding a charge of molten metal, and having a lower side wall portion of the container sloping inwardly. A cover is provided on the container having edge areas projecting abruptly inwardly and having an elongated pouring spout radially inwardly of the edge areas. The reaction vessel is provided with an improved tuyere formed generally of concentric tubes of constant cross section so that the cross section of the tuyere remains constant as the tuyere erodes away with the erosion of the inner lining during successive heats of refined metal.
Inventors
- 👤 J Saccomano
- 👤 J Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:53
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/48; C21C7/00; C21C7/0037; C21C7/04; C21C7/068; C21C7/0685; C21C7/072; F; F27; F27D; F27D3/00; F27D3/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
172 words
An improved reaction vessel for the refining of molten metals and comprising: a normally vertical container generally circular in cross section for holding a charge of molten metal, the lower wall portion of said container sloping inwardly, said container being formed of an outer shell and an inner lining of refractory material; tuyere means extending through said lower wall portion of said container for supplying submerged injection of pressurized fluids into the interior of a heat of molten metal, said tuyere means comprising an outer tube extending through the wall of said vessel, an inner tube concentrically aligned within said outer tube to form an annular chamber therebetween, and straight ribs extending from one tube to the other tube so as to provide a longitudinal flow of fluid from said annular chamber into said molten metal; and cover means for said container including edge areas projecting abruptly inwardly and an elongated spout positioned radially inwardly of said edge areas, said cover means permitting the escape of process gases from said reaction vessel.
Claim 2
Dependent Claim
172 words
An improved reaction vessel for the refining of molten metals and comprising: a normally vertical container generally circular in cross section for holding a charge of molten metal, the lower wall portion of said container sloping inwardly, said container being formed of an outer shell and an inner lining of refractory material; tuyere means extending through said lower wall portion of said container for supplying submerged injection of pressurized fluids into the interior of a heat of molten metal, said tuyere means comprising an outer tube extending through the wall of said vessel, an inner tube concentrically aligned within said outer tube to form an annular chamber therebetween, and straight ribs extending from one tube to the other tube so as to provide a longitudinal flow of fluid from said annular chamber into said molten metal; and cover means for said container including edge areas projecting abruptly inwardly and an elongated spout positioned radially inwardly of said edge areas, said cover means permitting the escape of process gases from said reaction vessel.
Claim 3
Dependent Claim
86 words
An improved reaction vessel as set forth in claim 1 wherein said tuyere means direct said pressurized fluids substantially toward the center of the bath, said pressurized fluids being injected in a direction substantially parallel to the surface of the molten metal and said tuyere means are of constant cross section throughout at least an inner portion of said inner lining whereby erosion of said lining and said tuyere means with successive heats of refined metal does not alter the cross-sectional configuration of the tuyere means.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |