US3630509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of molten material
Assignee: Spray Steelmaking Ltd
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Filing: 1969-04-18
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Granted: 1971-12-28
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Expires: 1989-04-18
Abstract
Abstract The invention is directed to means for removing accretions from the gas discharge nozzle or nozzles of apparatus for treating molten materials in which a freely falling stream of the molten material is shattered by a flow of gas directed at the stream. The accretion-removing means may comprise scrapers movable either continuously or intermittently across the face of the orifices of the or each gas discharge nozzles. Alternatively, the accretions may be removed or may be prevented from forming by a highfrequency vibrator connected to the gas discharge device.
Inventors
- 👤 David Robson Glyn Davies
- 👤 Leslie Joseph Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:50
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/56
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
102 words
Apparatus for carrying out a process for treating molten material, comprising a reaction vessel, a container having an outlet of generally circular cross section for feeding molten material into the reaction vessel as a freely falling stream, a gas discharge device having an array of discharge orifices circumferentially arranged about the path of the stream of molten material and operable to produce a gas flow directed towards the path of the molten material to shatter the stream thereof, and accretion-clearing means comprising a member positioned adjacent each orifice and means for moving each said member into accretion-removing relationship with the adjacent orifice.
Claim 2
Dependent Claim
102 words
Apparatus for carrying out a process for treating molten material, comprising a reaction vessel, a container having an outlet of generally circular cross section for feeding molten material into the reaction vessel as a freely falling stream, a gas discharge device having an array of discharge orifices circumferentially arranged about the path of the stream of molten material and operable to produce a gas flow directed towards the path of the molten material to shatter the stream thereof, and accretion-clearing means comprising a member positioned adjacent each orifice and means for moving each said member into accretion-removing relationship with the adjacent orifice.
Claim 3
Dependent Claim
22 words
Apparatus according to claim 1, wherein each said member is arranged to be moved intermittently across the face of the adjacent orifice.
Claim 4
Dependent Claim
44 words
Apparatus according to claim 2, wherein said members are pivotally mounted in relation to the gas discharge device, and wherein said means for moving each said member comprises a cam surface movable into contact with an outwardly extending end portion of each said member.
Claim 5
Dependent Claim
29 words
Apparatus according to claim 3, wherein the cam surface is formed on the radially inner circumference of a collar rotatable by drive means about the array of discharge orifices.
Claim 6
Dependent Claim
105 words
Apparatus for carrying out a process for treating molten material, comprising a reaction vessel, a container having an outlet of generally circular cross section for feeding molten material into the reaction vessel as a freely falling stream, a gas discharge device having an annular orifice circumferentially arranged about the path of the stream of molten material and operable to produce a gas flow directed towards the path of the molten material to shatter the stream thereof, and accretion clearing means comprising a member carried by a rotatable collar mounted coaxial to the annular orifice, which member extends across the radial extent of the annular orifice.
Claim 7
Dependent Claim
105 words
Apparatus for carrying out a process for treating molten material, comprising a reaction vessel, a container having an outlet of generally circular cross section for feeding molten material into the reaction vessel as a freely falling stream, a gas discharge device having an annular orifice circumferentially arranged about the path of the stream of molten material and operable to produce a gas flow directed towards the path of the molten material to shatter the stream thereof, and accretion clearing means comprising a member carried by a rotatable collar mounted coaxial to the annular orifice, which member extends across the radial extent of the annular orifice.
Claim 8
Dependent Claim
103 words
Apparatus for carrying out a process for treating molten material, comprising a reaction vessel, a container having an outlet of generally rectangUlar cross section for feeding molten material into the reaction vessel as a freely falling stream, a gas discharge device having elongate orifice means extending along at least one longitudinally extending side of the path of the stream of molten material and operable to produce a gas flow directed towards the path of the molten material to shatter the stream thereof, and means operable substantially to clear or to maintain clear of accretions the elongate orifice means of the gas discharge device.
Claim 9
Dependent Claim
103 words
Apparatus for carrying out a process for treating molten material, comprising a reaction vessel, a container having an outlet of generally rectangUlar cross section for feeding molten material into the reaction vessel as a freely falling stream, a gas discharge device having elongate orifice means extending along at least one longitudinally extending side of the path of the stream of molten material and operable to produce a gas flow directed towards the path of the molten material to shatter the stream thereof, and means operable substantially to clear or to maintain clear of accretions the elongate orifice means of the gas discharge device.
Claim 10
Dependent Claim
39 words
Apparatus according to claim 5, wherein the accretion clearing means comprises a member movable along a path parallel to the longitudinal sides of the path of molten material and extending across the lateral extent of the or each orifice.
Claim 11
Dependent Claim
102 words
Apparatus for carrying out a process for treating molten material, comprising a reaction vessel, means for feeding molten material into the reaction vessel as a freely falling stream, a gas discharge device having at least one orifice operable to produce a gas flow directed towards the path of the molten material to shatter the stream thereof, and means operable substantially to clear or to maintain clear of accretions said at least one orifice, said accretion clearing means comprising a member positioned adjacent said at least one orifice and means for moving said member into accretion-removing relationship with said at least one orifice.
Claim 12
Dependent Claim
102 words
Apparatus for carrying out a process for treating molten material, comprising a reaction vessel, means for feeding molten material into the reaction vessel as a freely falling stream, a gas discharge device having at least one orifice operable to produce a gas flow directed towards the path of the molten material to shatter the stream thereof, and means operable substantially to clear or to maintain clear of accretions said at least one orifice, said accretion clearing means comprising a member positioned adjacent said at least one orifice and means for moving said member into accretion-removing relationship with said at least one orifice.
Claim 13
Dependent Claim
16 words
Apparatus according to claim 8 further comprising high-frequency vibrator means connected to said gas discharge device.
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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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |