steel research international · 2012 · 24 citations · 7 references
Materials ScienceChemical EngineeringGaseous ReductionEngineeringCarbonizationGas AnalyzerCatalyst RecyclingEaf Steelmaking SlagMetallurgical ProcessHigh Strength Low Alloy SteelMetallurgical CokeEnd‐of‐life TyreEaf SlagMetal FormingMineral ProcessingMetal ProcessingComposite Pellets
Abstract The reduction of FeO‐containing slag by blends of metallurgical coke and end‐of‐life tyres (RT) have been investigated through experiments conducted in a laboratory‐scale horizontal tube furnace. Composite pellets of EAF slag (47.1% FeO) with coke, RT, and blends of coke/RT (in four different proportions) were rapidly heated at 1550°C under high purity argon gas and the off gas was continuously analyzed for CO and CO 2 using an online infrared (IR) gas analyzer. The extent of reduction after 10 min, level of carburization and desulfurization, and the total amount of CO 2 emissions were determined for each carbonaceous reductant. The results indicate that the extent of reduction, level of carburization and desulfurization of the reduced metal are significantly improved when coke is blended with RT. Blending of coke with RT resulted in a decrease in direct CO 2 emissions from the reduction reactions.
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