Tuyere stock arrangement of a blast furnace
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United States of America Patent
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Mar 17, 2015
Grant Date -
Mar 14, 2013
app pub date -
May 23, 2011
filing date -
May 26, 2010
priority date (Note) -
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Abstract
Tuyere stock arrangement of a blast furnace includes a tuyere body configured for installation in a shaft furnace wall. The tuyere body includes a front face facing an interior of the shaft furnace and an opposite rear face and a tuyere channel extending between the rear and front faces (24). The stock arrangement includes a blowpipe between the rear face and a hot blast air supply system, the blowpipe having a front portion connecting to the tuyere body and an opposite rear portion connecting to the hot blast air supply system. A fuel injection lance is arranged through the tuyere body and feeds fuel into the shaft furnace. A gas injection lance feeds an oxidizing gas to the shaft furnace and is arranged in the rear portion of the blowpipe to feed oxidizing gas into a central portion of a stream of hot blast air fed through the blowpipe.
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