Cast iron inoculant and method for production of cast iron inoculant

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United States of America Patent

PATENT NO 11708618
APP PUB NO 20200399724A1
SERIAL NO

16957284

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Abstract

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An inoculant for the manufacture of cast iron with spheroidal graphite is disclosed, the inoculant has a particulate ferrosilicon alloy having

    between 40 and 80% by weight of Si,0.02-8% by weight of Ca;0-5% by weight of Sr;0-12% by weight of Ba;0-10% by weight of rare earth metal;0-5% by weight of Mg;0.05-5% by weight of Al;0-10% by weight of Mn;0-10% by weight of Ti;0-10% by weight of Zr;the balance being Fe and incidental impurities in the ordinary amount,wherein the inoculant additionally contains, by weight, based on the total weight of inoculant: 0.1 to 15% by weight of particulate rare earth metal oxide(s) andat least one of from 0.1 to 15% of particulate Bi2O3, and/or from 0.1 to 15% of particulate Bi2S3, and/or from 0.1 to 15% of particulate Sb2O3, and/or from 0.1 to 15% of particulate Sb2S3, and/or from 0.1 to 5% of one of more of particulate Fe3O4, Fe2O3, FeO, or a mixture thereof, and/or from 0.1 to 5% of one of more of particulate FeS, FeS2, Fe3S4, or a mixture thereof, a method for producing such inoculant and use of such inoculant.

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Patent Owner(s)

Patent OwnerAddress
ELKEM ASAOSLO

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ott, Emmanuelle Oslo, NO 6 21

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