Reduction of iron ore in ore/coal mixtures

Details Reduction of iron ore in ore/coal mixtures Reduction of iron ore in ore/coal mixtures

C - Chemistry, Metallurgy

21

B

C21B 11/08 (2006.01) C21B 13/10 (2006.01)

Patent

CA 2254220

A process of reduction of iron ore and/or waste oxides in the form of agglomerate containing carbonaceous reductant in a rotary hearth furnace includesproviding a bed of agglomerates in a rotary hearth furnace, the bed having a height of at least 40mm and the carbonaceous reductant containing sufficient volatile matter, and heating the bed of agglomerates with a radiant heat source at least 1450°C to cause the top of the bed to reach a temperature in the range of 1350°C to 1500°C to reduce iron oxides in the iron ore and/or waste oxides to metallic iron.

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