Iron oxide pellet specifications for direct reduction require gangue levels considerably less than typical blast furnace pellets. This restriction is due to the needs of the typical customer for the direct reduced iron product, the electric arc furnace. These compositional restrictions are no longer necessary when considering direct reduced iron for blast furnace customers. In that case, lower-grade iron oxide pellets can be converted to a valuable product at a lower overall cost. Bench-scale reduction tests were conducted with blast furnace grade iron oxide pellets, simulating the MIDREX Process. Briquettes with a high apparent density and strength were produced. Commercial applications and economic value to blast furnace operation are also discussed.
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