Converter
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 12, 2002
Grant Date -
N/A
app pub date -
Apr 25, 2000
filing date -
Apr 25, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A converter includes a side wall, and a tapping hole placed at the side wall to allow passage of molten steel. A refractory plug is axially spaced apart from the tapping hole with a predetermined distance. The distance between the refractory plug and the tapping hole is in the range of 3-5 d where d indicates the inner diameter of the tapping hole. The refractory plug has one or more heat resisting steel tubes. When the molten steel is discharged through the tapping hole of the converter to the ladle, 0.1-0.4 Nm.sup.3 /min of inert gas is introduced into the converter through the refractory plug to prevent leakage of the carried over slag.
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