Metal refining processes
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United States of America Patent
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Oct 25, 1983
Grant Date -
N/A
app pub date -
Jun 14, 1982
filing date -
Jun 19, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a process for refining steel comprising the steps of blowing a refining gas at the upper surface of the melt contained in a refining vessel by means of an overhead lance; injecting a stirring or processing gas directly into the vessel below the surface level of the melt therein; and introducing carbon from above onto or through the upper surface of the melt in the refining vessel.
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