Stopper rod
AssigneeRefractory Intellectual Property GmbH & Co. KG
InventorsGerald Nitzl, Norman Edward Rogers
Life of this patent
Estimating the term…
Abstract
Stopper rod having an elongate body with an inlet at an upper first end and an outlet at a lower second end. The second end of the body defines a nose for insertion into a tundish outlet. A continuous axial bore extends through the body from the inlet in the first end to the outlet in the second end. A restrictor having an inlet, an outlet and a passageway therebetween is positioned in the axial bore such that the inlet of the restrictor is closer to the first end than the second end. A gas supply conduit is arranged to supply gas into the axial bore above the inlet of the restrictor.
Claims11
A stopper rod comprising:
- an elongate body having an inlet at an upper first end and an outlet at a lower second end, the second end of the body defining a nose for insertion into a tundish outlet;
- a continuous axial bore extending through the body from the inlet to the outlet;
- a restrictor having an inlet, an outlet and a passageway therebetween, said restrictor being constituted by a plug positioned in the axial bore such that the inlet of the restrictor is closer to the first end than the second end and such that the outlet of the restrictor is spaced from the second end and the nose;
- and
- a gas supply conduit arranged to supply gas into the axial bore above the inlet of the restrictor.
Dependencies are inferred from the claim text.