System of gas and/or gas and powders injection in liquid metals through rotary refractory lance
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United States of America Patent
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Jul 21, 2009
Grant Date -
Sep 13, 2007
app pub date -
Aug 25, 2005
filing date -
Aug 27, 2004
priority date (Note) -
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Abstract
This invention has the function of injecting gas and/or gas and powders into liquid metals using a refractory lance that is endowed with circular movement around its axis, using low values of pressure and sewage, which provides a better distribution and lower consumption of the powders, resulting in lower cost of the handled metal. The system consists of a refractory lance (7), which is endowed with a rotative junction (6), a motor-reducer (5) and a high-pressure hose (8).
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