METHOD OF PRODUCING CAST IRON
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United States of America Patent
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Sep 28, 2010
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Aug 12, 2002
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Abstract
A method of producing a silicon-and-carbon-enriched cast iron melt. The method can include melting an initial cupola charge in a cupola, conducting the molten metal to a mixing vessel, increasing the silicon and carbon content of the molten metal by a substantially continuous addition of granular silicon carbide having a purity of greater than 94% and a size of less than ⅜″ to the mixing vessel while simultaneously agitating the molten metal to an extent sufficient to bring the silicon carbide into solution with the molten metal, and conducting the silicon-and-carbon-enriched molten metal away from the mixing vessel.
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