Continuous reduction of iron-containing material

Details Continuous reduction of iron-containing material Continuous reduction of iron-containing material

C - Chemistry, Metallurgy

21

B

53/24

C21B 13/00 (2006.01)

Patent

CA 1180189

CONTINUOUS REDUCTION OF IRON-CONTAINING MATERIAL ABSTRACT Fine-particled iron-containing material (e.g. iron ore) and ground hard coal, in a ratio of 2:1 to 5:1, are heated in separate flow reactors with the aid of hot gas. The hot material and hot coal are mixed, the resulting mixture having a temperature between 470 and 530°C. The mixture is hot briquetted and the hot briquettes are introduced into a medium, e.g. in a converter or a rotary kiln, in which they are exposed to sufficiently high temperatures to cause iron oxide to be reduced and carbon monoxide to be formed, and burning the carbon monoxide by supplying oxygen.

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