US3703279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactor
Assignee: Union Carbide Industrial Gases Technology Corp
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Filing: 1969-08-15
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Granted: 1972-11-21
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Expires: 1989-08-15
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
- 👤 Joseph M Saccomano
- 👤 John D Ellis Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:22
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/16; C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/46; C21C5/48; C21C7/00; C21C7/04; C21C7/072; Y; Y02; Y02E; Y02E30/00; Y02E30/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
An erodible tuyere for supplying submerged injection of pressurized fluids into a heat of molten metal in a reaction vessel wherein the vessel is formed with an inner lining of refractory material which erodes as successive heats of refined metal are produced, said tuyere comprising: an outer tube extending through the side wall of said vessel opening at the inner surface of said inner lining and having a constant cross section through said inner lining; an inner tube within said outer tube opening axially aligned with said outer tube and having a constant cross section through said inner lining; spacer means concentrically spacing said tubes comprising straight longitudinal ribs formed on one tube extending toward the other tube providing a swirl free injection of outer gas. means external of said vessel for connecting said outer tube to a source of pressurized fluid; and means external of said vessel for connecting said inner tube to a source of pressurized fluid.
Claim 2
Dependent Claim
159 words
An erodible tuyere for supplying submerged injection of pressurized fluids into a heat of molten metal in a reaction vessel wherein the vessel is formed with an inner lining of refractory material which erodes as successive heats of refined metal are produced, said tuyere comprising: an outer tube extending through the side wall of said vessel opening at the inner surface of said inner lining and having a constant cross section through said inner lining; an inner tube within said outer tube opening axially aligned with said outer tube and having a constant cross section through said inner lining; spacer means concentrically spacing said tubes comprising straight longitudinal ribs formed on one tube extending toward the other tube providing a swirl free injection of outer gas. means external of said vessel for connecting said outer tube to a source of pressurized fluid; and means external of said vessel for connecting said inner tube to a source of pressurized fluid.
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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |