Cokeless sinter blend compositions
AssigneeNu-Iron Technology, LLC
InventorsGary Levanduski, Narayan Govindaswami
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Abstract
Examples herein generally relate to sinter blend compositions for use in a sintering process that do not contain coke breeze (0.0% coke breeze), or contain only very small amounts of coke breeze. In particular, these sinter blend compositions are capable of repurposing mixture of iron-making reverts, having high total and metallic iron levels that re-oxidize so as to become a replacement fuel source for the coke breeze typically used in sinter blend compositions for use in a sintering process, while still managing to produce a sinter with sufficient ISO tumble strengths.
Claims18
A sinter blend composition for use in a sintering process, comprising:
- a mixture of iron making reverts and a DF blend that is a blend of DRI fines having a component size distribution less than 6.8 mm where the DF blend comprises, by weight, between 77.00% and 84.00% total iron (FeTOT), between 1.00% and 5.00% SiO2, between 0.05% and 3.00% Al2O3, between 4.00% and 8.00% CaO, between 0.05% and 1.50% MgO, between 4.00% and 8.50% C, and the remainder being impurities;
- and
- wherein the sinter blend composition is free of coke breeze and is configured to produce a sinter with an ISO tumble strength of at least 72.
Dependencies are inferred from the claim text.