Method of producing cast iron
OwnerRonald Jay Beyerstedt, Ricklin L. Heintzinventors
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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.
Claims26
A method of producing a silicon-and-carbon-enriched cast iron melt, the method comprising:
- melting an initial cupola charge in a cupola to produce a molten metal;
- and
- 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 molten metal.
A method of producing a silicon-and-carbon-enriched cast iron melt, the method comprising:
- 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 to the mixing vessel, the granular silicon carbide added sufficiently to increase the silicon and carbon content of the molten metal by at least 1.0% by weight when having a retention time of 1.5 minutes within the mixing vessel;
- and
- conducting the silicon-and-carbon-enriched molten metal away from the mixing vessel.
A method of producing a silicon-and-carbon-enriched cast iron melt, the method comprising:
- 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 to the mixing vessel while agitating the molten metal using a vibratory mechanism 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.
A method of producing a silicon-and-carbon-enriched cast iron melt, the method comprising:
- melting an initial cupola charge in a cupola;
- introducing a granular silicon carbide at a substantially continuous rate to the cupola proximate a melt zone of the cupola;
- and
- conducting the silicon-and-carbon-enriched molten metal away from the mixing vessel.
A system comprising:
- a cupola having one or more tuyeres;
- a granular silicon carbide delivery system communication with at least one tuyere to deliver granular silicon carbide into the cupola through the tuyere.
Dependencies are inferred from the claim text.