US3743264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steel conversion apparatus
Assignee: Verfahrenstechnik Dr Ing Kurt Baum
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Filing: 1971-07-26
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Granted: 1973-07-03
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Expires: 1991-07-26
Abstract
Abstract An open topped vessel for converting molten ferrous metal to steel is pivotable about a horizontal axis and has bottom tuyeres which permit the blowing of oxygen or other gases upwardly through the molten metal. An enclosure at least partially surrounds the vessel and co-operates with a smoke hood to prevent the escape of pollutants when the vessel is in its vertical position. Suction means is coupled to the hood for creating an in-draft at a closable access opening to prevent the release of pollutants when the vessel is pivoted to place its open top adjacent the access opening for receiving a charge.
Inventors
- 👤 A Dortenzo
- 👤 J Baum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:33
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/38; C21C5/40
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
164 words
A converter vessel having a metal receiving opening formed adjacent an upper end thereof, an enclosure substantially surrounding said vessel and having means defining an upper wall portion disposed above said vessel and a side wall portion extending generally downwardly from said upper wall portion, an access opening formed in one of said wall portions, said upper and side wall portions being disposed in a closely surrounding relation to said vessel, said vessel being adapted to be tilted about a substantially horizontal axis to position said metal receiving opening adjacent said access opening so that said vessel may be charged, and exhaust means including means extending through said upper wall portion and engageable with said metal receiving opening when said vessel is in an untilted position for withdrawing pollutants generated in said vessel, said exhaust means also being operative to create an in-draft at said access opening to prevent the escape of said pollutants when said vessel is tilted in its metal receiving position.
Claim 2
Dependent Claim
164 words
A converter vessel having a metal receiving opening formed adjacent an upper end thereof, an enclosure substantially surrounding said vessel and having means defining an upper wall portion disposed above said vessel and a side wall portion extending generally downwardly from said upper wall portion, an access opening formed in one of said wall portions, said upper and side wall portions being disposed in a closely surrounding relation to said vessel, said vessel being adapted to be tilted about a substantially horizontal axis to position said metal receiving opening adjacent said access opening so that said vessel may be charged, and exhaust means including means extending through said upper wall portion and engageable with said metal receiving opening when said vessel is in an untilted position for withdrawing pollutants generated in said vessel, said exhaust means also being operative to create an in-draft at said access opening to prevent the escape of said pollutants when said vessel is tilted in its metal receiving position.
Claim 3
Dependent Claim
26 words
The invention set forth in claim 1 wherein said enclosure is open at its lower end and terminates at substantially the lower end of said vessel.
Claim 4
Dependent Claim
25 words
The invention set forth in claim 1 wherein said enclosure is substantially closed at its lower end and extends a substantial distance below said vessel.
Claim 5
Dependent Claim
35 words
The invention set forth in claim 1 wherein said metal receiving opening is normally disposed in a first position spaced from access opening, said exhaust means including first exhaust means disposed above said first position.
Claim 6
Dependent Claim
17 words
The invention set forth in claim 1 and including closure means for normally closing said access opening.
Claim 7
Dependent Claim
127 words
A converter vessel having a metal receiving opening, an enclosure substantially surrounding said vessel and having an access opening formed therein, said metal receiving opening normally being disposed in a first position spaced from said access opening, said vessel being adapted to be tilted about a substantially horizontal axis to position said metal receiving opening adjacent said aCcess opening so that said vessel may be charged, and exhaust means connected to said enclosure for withdrawing pollutants generated in said vessel and for creating an in-draft at said access opening to prevent the escape of said pollutants when said vessel is tilted in its metal receiving position, said exhaust means including first exhaust means disposed above said first position and second exhaust means disposed above said access opening.
Claim 8
Dependent Claim
127 words
A converter vessel having a metal receiving opening, an enclosure substantially surrounding said vessel and having an access opening formed therein, said metal receiving opening normally being disposed in a first position spaced from said access opening, said vessel being adapted to be tilted about a substantially horizontal axis to position said metal receiving opening adjacent said aCcess opening so that said vessel may be charged, and exhaust means connected to said enclosure for withdrawing pollutants generated in said vessel and for creating an in-draft at said access opening to prevent the escape of said pollutants when said vessel is tilted in its metal receiving position, said exhaust means including first exhaust means disposed above said first position and second exhaust means disposed above said access opening.
Claim 9
Dependent Claim
33 words
The invention set forth in claim 4 wherein said first exhaust means includes a hood means which is movable into and out of engagement with said vessel for surrounding said metal receiving opening.
Claim 10
Dependent Claim
21 words
The invention set forth in claim 7 wherein said exhaust means includes a second exhaust means disposed above said access opening.
Claim 11
Dependent Claim
17 words
The invention set forth in claim 8 and including door means for normally closing said access opening.
Claim 12
Dependent Claim
46 words
The invention set forth in claim 8 wherein a first exhaust opening is formed in said enclosure for receiving said first exhaust means, said first exhaust means substantially closing said opening when in each of its engagement and out of engagement positions relative to said opening.
Claim 13
Dependent Claim
32 words
The invention set forth in claim 10 wherein said enclosure includes a second exhaust opening formed therein above said access opening, said second exhaust means including means surrounding said second exhaust opening.
Claim 14
Dependent Claim
26 words
The invention set forth in claim 11 wherein said enclosure is open at its lower end and terminates at substantially the lower end of said vessel.
Claim 15
Dependent Claim
25 words
The invention set forth in claim 11 wherein said enclosure is substantially closed at its lower end and extends a substantial distance below said vessel.
Claim 16
Independent Claim
144 words
A method of controlling the discharge of pollutants from an open topped vessel containing hot metal wherein gases are introduced into said metal through tuyeres located in the lower end of said vessel, the steps of, surrounding at least the top and sides of said vessel with an enclosure, positioning a first exhaust means in a surrounding relation to the open top of said vessel when the latter is in a substantially vertical position, raising said first exhaust means away from said vessel, tilting said vessel to position its open top adjacent an access opening in said enclosure and displaced from said first exhaust means, creating an in-draft through said access opening to prevent the discharge of pollutants, and charging said vessel through said access opening, and collecting at least a portion of said pollutants by second exhaust means located over said access opening.
Claim 17
Independent Claim
144 words
A method of controlling the discharge of pollutants from an open topped vessel containing hot metal wherein gases are introduced into said metal through tuyeres located in the lower end of said vessel, the steps of, surrounding at least the top and sides of said vessel with an enclosure, positioning a first exhaust means in a surrounding relation to the open top of said vessel when the latter is in a substantially vertical position, raising said first exhaust means away from said vessel, tilting said vessel to position its open top adjacent an access opening in said enclosure and displaced from said first exhaust means, creating an in-draft through said access opening to prevent the discharge of pollutants, and charging said vessel through said access opening, and collecting at least a portion of said pollutants by second exhaust means located over said access opening.
Claim 18
Dependent Claim
24 words
The method set forth in claim 14 and including the steps of returning said vessel to its vertical position and closing said access opening.
Claim 19
Dependent Claim
146 words
A converter vessel having a metal receiving opening, an enclosure substantially surrounding said vessel and having means defining a roof portion disposed above said vessel and a side wall portion extending generally downwardly from said roof portion, means defining an access opening formed in one of said wall portions, means mounted on said enclosure for selectively opening and closing said access opening, said vessel being adapted to be tilted about a substantially horizontal axis to position said metal receiving opening adjacent said access opening so that said vessel may be charged, first exhaust means extending through said roof portion for engaging said metal receiving opening when said vessel is in an untilted position and second exhaust means disposed above said access opening, said first and second exhaust means being operative to prevent the escape of pollutants when said vessel is tilted in its metal receiving position.
Claim 20
Dependent Claim
146 words
A converter vessel having a metal receiving opening, an enclosure substantially surrounding said vessel and having means defining a roof portion disposed above said vessel and a side wall portion extending generally downwardly from said roof portion, means defining an access opening formed in one of said wall portions, means mounted on said enclosure for selectively opening and closing said access opening, said vessel being adapted to be tilted about a substantially horizontal axis to position said metal receiving opening adjacent said access opening so that said vessel may be charged, first exhaust means extending through said roof portion for engaging said metal receiving opening when said vessel is in an untilted position and second exhaust means disposed above said access opening, said first and second exhaust means being operative to prevent the escape of pollutants when said vessel is tilted in its metal receiving position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |