Metallurgical apparatus – Means for introducing fluent into vessel – e.g. – tuyere – Having means for simultaneously feeding diverse materials
Reexamination Certificate
2008-01-16
2010-11-23
Kastler, Scott (Department: 1793)
Metallurgical apparatus
Means for introducing fluent into vessel, e.g., tuyere
Having means for simultaneously feeding diverse materials
C266S265000
Reexamination Certificate
active
07837928
ABSTRACT:
A tuyere assembly for directing air and one or more fluid hydrocarbons into a cavity in a blast furnace. The tuyere assembly includes a blowpipe portion with a conduit defining a bore through which the air is directed. The tuyere assembly also includes a tuyere with a chamber defined by one or more walls thereof, the chamber being in fluid communication with the cavity of the blast furnace, and the chamber of the tuyere and the bore of the blowpipe portion form an internal cavity of the tuyere assembly. Also, the tuyere assembly includes one or more injector subassemblies having one or more outlet ends, each outlet end being adapted for directing the hydrocarbon into the internal cavity for combustion thereof to provide a flame substantially having a preselected flame configuration.
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Abstract and English Machine Translation of JP 2003-231905 (Aug. 19, 2003).
Cardozo et al., Analysis of Natural Gas injection through Blast furnace Tuyeres, 5th IAS Ironmaking Conference (2005), San Nicholas, Argentina, Dec. 2005.
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Drebert Lawrence A.
Harrison Frank W.
Kastler Scott
U.S. Steel Canada Inc.
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