Specialized metallurgical processes – compositions for use therei – Processes – Process control responsive to sensed condition
Reexamination Certificate
2005-11-28
2008-12-23
Kastler, Scott (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Processes
Process control responsive to sensed condition
C266S045000, C266S080000, C266S090000
Reexamination Certificate
active
07468090
ABSTRACT:
A method for tapping of steel from a steelmaking furnace to a receiving vessel comprising the steps of providing a steelmaking furnace comprising a tapping hole, and means for angular positioning of the furnace to vary the depth of molten steel and slag contained in the furnace above the tapping hole; determining a guidance profile for the tapping of the furnace, the guidance profile including the parameters of minimum tapping angle, maximum tapping angle, and time of rotation from the minimum tapping angle to the maximum tapping angle; performing an initial angular rotation of the furnace from an initial position to the minimum tapping angle; beginning the transfer of molten steel from the furnace through the tapping hole to a receiving vessel; rotating the furnace to the maximum tapping angle in accordance with the guidance profile; and ceasing the flow of molten steel through the tapping hole.
REFERENCES:
patent: 4679773 (1987-07-01), Wunsche
patent: 5462259 (1995-10-01), Guido
patent: 6576039 (2003-06-01), Koffron et al.
patent: 2004/0239017 (2004-12-01), Heinrich
Jones Jeremy A. T.
Kemeny Frank L.
Walker David I.
Hammond John M
Kastler Scott
Nupro Corporation
Patent Innovations LLC
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