Apparatus for injecting material into a vessel
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United States of America Patent
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Mar 30, 2010
Grant Date -
Oct 2, 2008
app pub date -
Dec 14, 2007
filing date -
Dec 15, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An apparatus for injecting particulate and/or gaseous material into a metallurgical vessel for performing a metallurgical process is disclosed. The apparatus comprises a duct and an annular duct tip at a forward end of the duct. The apparatus also comprises inner and outer cooling water flow passages configured such that out flowing water passing from the duct tip to a rear end of the duct must travel through a longer flow path than inflowing water passing from the rear end of the duct to the duct tip.
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