Method and apparatus for slag-free teeming of metal melt from a metallurgical melt vessel
AssigneeSMS Demag AG
InventorsJan Reichel, Reinhard Fuchs
Life of this patent
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Abstract
A method of slag-free teeming of metal melt includes arranging outside of the metal vessel and closely adjacent to the discharge edge of the vessel discharge opening, of a jetting lance an inclination of which relative to a bath surface in the vessel and spacing from the discharge edge is changeable and injecting, through the discharge opening of the melt vessel, immediately before start of the teeming process and during the teeming process, a fluid jet having a high kinetic pulse energy substantially parallel to the bath surface for forcing a slag melt, which is located in a discharge region of the vessel and covers the metal melt, back.
Claims10
An apparatus for slag-free teeming of a metal melt from a metallurgical melt vessel having a discharge opening with a discharge edge, the apparatus comprising a jetting lance located outside of the vessel opposite the discharge edge for forcing back slag melt covering metal melt in a discharge region of the vessel;
- and a manipulator for supporting the jetting lance and for changing an inclination of the jetting lance relative to a bath surface in the vessel and for changing spacing of the jetting lance from the discharge edge in accordance with a discharge movement of the melt vessel.
A method of slag-free teeming of metal melt from a metallurgical melt vessel having a discharge opening with a discharge edge, the method comprising the steps of arranging, outside of the melt vessel and closely adjacent to the discharge edge of the vessel discharge opening, of a jetting lance for injecting, through the discharge opening of the melt vessel, immediately before start of a teeming process and during the teeming process, of a fluid jet having a high kinetic pulse energy;
- and changing an inclination of the jetting lance relative to a bath surface and spacing of the jetting lance from the discharge edge in accordance with a movement of the melt vessel for directing the fluid jet substantially parallel to the bath surface for forcing a slag melt, which is located in a discharge region of the melt vessel, back from a surface of the metal melt to prevent the slag melt from being poured out of the melt vessel, together with the metal melt.
Dependencies are inferred from the claim text.