Tapping pipe

A tapping pipe for a metallurgical melting vessel, whose axially running passage channel has a cross-section between an inlet end and an outlet end which follows the following dependency:

• A(y)=A*√(hl+hk)/[(hl+hk)−y]
• with
• A=cross-sectional area of the passage channel at the outlet end in m2 (with a desired volume flow quantity predefined),
• hl=effective height of a molten metal in the melting vessel above the inlet end of the tapping pipe (in axial extension of the tapping channel) [m]
• hk=length of the tapping pipe between inlet end and outlet end [m]
• y=axial distance [m] between the outlet end and a point along the tapping pipe (with 0≦y≦(hl+hk)).