Basic tundish flux composition for steelmaking processes
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United States of America Patent
Stats
-
Jan 16, 2001
Grant Date -
N/A
app pub date -
Sep 2, 1999
filing date -
Dec 11, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The tundish flux composition of the invention employs solid recycled ladle metallurgy furnace (LMF) slag as a fluidizing and refining base ingredient in a mixture of raw materials. The preferred recycled LMF slag material comprises about 35% to about 65% CaO, about 10% to about 35% Al.sub.2 O.sub.3, about 1% to about 10% SiO.sub.2, about 3% to about 15% MgO, about 0.3% to about 10% FeO, about 0.1% to about 5% MnO, about 0.1% to about 0.15% P.sub.2 O.sub.5, and about 0.1% to about 0.5% S. The tundish flux composition comprises from about 10% to about 80% of recycled LMF slag with the balance being raw materials selected from a calcium oxide source, a fluorine source, a magnesium oxide source, a carbon source, a silica source, a sodium source, a potassium source, and mixtures of these raw materials.
First Claim
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