Device for injecting gas into a metallurgical vessel
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United States of America Patent
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Aug 11, 2015
Grant Date -
May 2, 2013
app pub date -
Mar 28, 2011
filing date -
Mar 31, 2010
priority date (Note) -
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Abstract
The invention relates to a device for injecting gas into a metallurgical vessel, comprising a blowing head (5) having a feed line (5b) for delivering gas, in particular oxygen, to the blowing head (5), and at least one Laval nozzle (1) disposed on the blowing head (5), said nozzle having an inlet section (2) which conveys the gas and an outlet section (3), wherein the gas is delivered to the inlet section (2) via the feed line (5b) and leaves the outlet section (3) at supersonic speed, wherein the Laval nozzle (1) comprises at least one first nozzle part (2, 3) and a second nozzle part (7), wherein the nozzle parts (2, 3, 7) are adjustable relative to one another by changing the geometry of the Laval nozzle (1).
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