CAST IRON MODIFIER AND METHOD OF OBTAINING PIG IRON MODIFIER

文件类型：PDF文档
文件大小：289K
The present invention relates to an inoculant for the manufacture of cast iron with spheroidal graphite, said inoculant comprises a particulate ferrosilicon alloy consisting of 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; 0-10by weight of Zr; the balance being Fe and incidental impurities in the ordinary amount, wherein said 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.