Method for oxygen injection in metallurgical process requiring variable oxygen feed rate
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United States of America Patent
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Aug 2, 2005
Grant Date -
N/A
app pub date -
Nov 12, 2002
filing date -
Nov 13, 2001
priority date (Note) -
Expired
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Abstract
A method of processing molten metal by the injection of oxygen through a water cooled supersonic oxygen injection lance. In the first step of the process, oxygen is injected through the injection lance at an initial flowrate to the process which is the optimal flowrate for the lance tip design. Thereafter, at least one process variable relating to the required oxygen flowrate is continuously measured, and oxygen flowrate may be reduced. A second gas flowrate is admixed to the injection lance to maintain the optimal overall gas flowrate to the process while reducing the oxygen flowrate.
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