Filler for ladle sliding and opening/closing device
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United States of America Patent
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N/A
Issued Date -
Feb 1, 2007
app pub date -
Sep 9, 2004
filing date -
Sep 12, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A filler for a ladle tap hole valve, characterized by comprising a sand and a feldspar to be externally added and mixed together so that the total quantity of alkalis in the filler is 0.3 to 1.5 mass %, the feldspar having a particle size distribution of 0.3 to 1.7 mm, the sand being composed of 40 to 100 mass % of silica sand having a particle size distribution of 0.3 to 1.7 mm and 60 to 0 mass % of chromite sand having a particle size distribution of 0.1 to 0.85 mm.
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