Invention Grant
- Patent Title: Cast iron inoculant and method for production of cast iron inoculant
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Application No.: US16957283Application Date: 2018-12-21
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Publication No.: US11932913B2Publication Date: 2024-03-19
- Inventor: Emmanuelle Ott , Oddvar Knustad
- Applicant: ELKEM ASA
- Applicant Address: NO Oslo
- Assignee: ELKEM ASA
- Current Assignee: ELKEM ASA
- Current Assignee Address: NO Oslo
- Agency: LUCAS & MERCANTI, LLP
- Priority: NO 172061 2017.12.29
- International Application: PCT/NO2018/050324 2018.12.21
- International Announcement: WO2019/132668A 2019.07.04
- Date entered country: 2020-06-23
- Main IPC: C21C1/10
- IPC: C21C1/10 ; C22C33/00 ; C22C33/08 ; C22C35/00 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/14 ; C22C38/60
Abstract:
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;
0-15% 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% of particulate Bi2S3, and optionally between 0.1 and 15% of particulate Bi2O3, and/or between 0.1 and 15% of particulate Sb2O3, and/or between 0.1 and 15% of particulate Sb2S3, and/or between 0.1 and 5% of particulate Fe3O4, Fe2O3, FeO, or a mixture thereof, and/or between 0.1 and 5% of one or more of particulate FeS, FeS2, Fe3S4, or a mixture thereof, a method for producing such inoculant and use of such inoculant.
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;
0-15% 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% of particulate Bi2S3, and optionally between 0.1 and 15% of particulate Bi2O3, and/or between 0.1 and 15% of particulate Sb2O3, and/or between 0.1 and 15% of particulate Sb2S3, and/or between 0.1 and 5% of particulate Fe3O4, Fe2O3, FeO, or a mixture thereof, and/or between 0.1 and 5% of one or more of particulate FeS, FeS2, Fe3S4, or a mixture thereof, a method for producing such inoculant and use of such inoculant.
Information query
