Device for degassing molten steel with an improved discharge nozzle

1. A device for degassing molten steel, comprising an evacuation vessel; a casting ladle; an inlet nozzle with a gas rinsing device arranged therein; and an outlet nozzle having a wall, wherein the outlet nozzle has at least one bore that extends through the wall of the outlet nozzle at a bottom edge in a radial direction in relation to a center longitudinal axis of the outlet nozzle, the at least one bore being configured and arranged to suction molten steel from a vicinity directly external the outlet nozzle.

2. The device according to claim 1 , wherein the outlet nozzle has several bores.

3. The device according to claim 1 , wherein the outlet nozzle has several bores along a circle of 360°.

4. The device according to claim 1 , wherein the outlet nozzle has several bores along a semi-circle of 180° in a direction of a refractory wall of the casting ladle.

5. The device according to claim 2 , wherein the bores have a diameter of 10 mm to 50 mm.

6. The device according to claim 5 , wherein the bores have a diameter of 25 mm to 35 mm.

7. The device according to claim 1 , wherein the outlet nozzle has an immersion depth in molten steel in the casting ladle of 300 mm to 1,200 mm.

8. The device according to claim 7 , wherein the immersion depth of the outlet nozzle in the molten steel in the casting ladle is 400 mm to 1,000 mm.

9. The device according to claim 1 , wherein the at least one bore is arranged 50 mm to 900 mm above the bottom edge of the outlet nozzle.

10. The device according to claim 9 , wherein the at least one bore is arranged 100 mm to 700 mm above the bottom edge of the outlet nozzle.

11. The device according to claim 2 , wherein the bores are arranged in a row of bores at the outlet nozzle.

12. The device according to claim 2 , wherein the bores are arranged in several rows of bores located above each other at the outlet nozzle.