F - Mech Eng,Light,Heat,Weapons – 27 – D
Patent
F - Mech Eng,Light,Heat,Weapons
27
D
F27D 3/15 (2006.01) B22D 2/00 (2006.01) C21C 5/28 (2006.01) C21C 5/46 (2006.01) G01J 5/00 (2006.01)
Patent
CA 2233516
A system and method for detecting molten slag in a tap stream between a steel making basic oxygen furnace (BOF) and corresponding ladle. BOFs are used in the manufacture of steel. An infrared (IR) imaging or detecting device is used to image/view the BOF-to-ladle tap stream, the steam transmitting energy indicative of whether molten steel and/or slag is in the stream at a given time. The imaging device uses mainly long IR wavelengths (e.g. wavelengths of from about 8 to 14 µm) when imaging the molten tap stream, because these wavelengths are less susceptible to being blocked or absorbed by airborne gases and particles frequently found in BOF environments. In certain embodiments, all IR wavelengths other than those greater than about 8 µm are filtered out and are not used to detect slag in the tap stream.
Fuchs Elizabeth A.
Goldstein Daniel A.
Sharan Alok
Bethlehem Steel Corporation
Cameron Norman M.
Isg Technologies Inc.
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