Spheroidizing agent of graphite
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United States of America Patent
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Issued Date -
Jun 14, 2007
app pub date -
Sep 29, 2006
filing date -
Dec 7, 2005
priority date (Note) -
Abandoned
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Abstract
A graphite spheroidizing agent capable of spheroidizing graphite while preventing formation of chunky graphite is provided. The graphite spheroidizing agent of the present invention comprising silicon, magnesium, calcium and rare earth elements, wherein the graphite spheroidizing agent contains rare earth elements of 0.6 to 3.0 mass % and a calcium content of 1.3 to 4.0 mass %, respectively, relative to the total amount thereof, and a percentage of lanthanum in the rare earth elements is 50 mass % or more.
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