| abstract |
The present invention relates to an inoculant for producing cast iron using spheroidal ink, the inoculant comprising a granular bismuth iron alloy consisting of: 40 to 80% by weight of Si; 0.02-8 weight percent of Ca; 0-5 weight Percentage of Sr; 0-12% by weight of Ba; 0-10% by weight of rare earth metal; 0-5 wt% of Mg; 0.05-5 wt% of Al; 0-10 wt% of Mn; 0-10 wt% Ti; 0-10% by weight of Zr; the balance being a flat constant Fe and incidental impurities, wherein the inoculant additionally contains a particulate rare earth metal oxide in a weight ratio of 0.1 to 15% by weight based on the total weight of the inoculant, And at least one of 0.1 to 15% of granular Bi 2 O 3 , and/or 0.1 to 15% of granular Bi 2 S 3 , and/or 0.1 to 15% of granular Sb 2 O 3 , and/or 0.1 to 15% granular Sb 2 S 3 , and/or 0.1 to 5% or more of particulate Fe 3 O 4 , Fe 2 O 3 , FeO, or a mixture thereof, and/or 0.1 to 5% or more Granular FeS, FeS 2 , Fe 3 S 4 , or mixtures thereof; the invention also relates to a method of making such an inoculant and to the use of such an inoculant. |