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US 2004/0239015 A1Published application
Deskulling lance
OwnerJohn A. Barbus, Derek S. Dengel +2inventors
InventorsJohn A. Barbus, Derek S. Dengel, Dennis B. Boyle, Nicholas M. Rymarchyk JR.
Life of this patent
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Abstract
A lance for discharging high velocity oxygen or other gases to remove skulls which form within the upper cone section of steelmaking vessels. The lance includes a lance tip having a plurality of sets of radially spaced nozzles whereby gas is directed generally laterally outwardly against the inner wall of the cone section to retard or remove the skulls.
Claims20
A deskulling lance tip comprising:
- a first set of deskulling nozzles;
- and
- at least one additional set of deskulling nozzles disposed at a different orientation in said tip relative to said first set of deskulling nozzles.
A deskulling lance comprising:
- a lance body and a lance tip connected to said lance body, said lance tip comprising:
- a first set of deskulling nozzles;
- and
- at least one additional set of deskulling nozzles disposed at a different orientation in said tip relative to said first set of deskulling nozzles.
1 more element
A method of removing skull from a steelmaking vessel comprising the steps of:
- inserting a deskulling lance having a lance body and a lance tip into the vessel;
- discharging gas from the lance toward a skull deposit on the interior of the vessel, said discharging comprising:
- discharging gas from a first set of deskulling nozzles in the lance tip;
- and
- discharging gas from at least one additional set of deskulling nozzles disposed at a different orientation in the lance tip relative to the first set of deskulling nozzles.
2 more elements
Dependencies are inferred from the claim text.