C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
C21B 11/00 (2006.01) C21B 13/00 (2006.01)
Patent
CA 2069560
ABSTRACT A process for continuously smelting iron ore by use of coal to yield molten iron or semi-steel is disclosed. It comprises establishing a melt (38) covered by slag (8); inducing the slag and the molten iron to flow countercurrently to one another, toward opposite ends of the smelter (2); maintaining iron oxide-reducing conditions in that zone (12) of the smelter towards which the slag flows; maintaining carbon-oxidizing conditions in that zone (10) of the smelter towards which the iron flows; tapping the slag from the reducing zone end (12) of the smelter; tapping the iron from the other end (10); and adding to both zones iron ore, coal, oxygen, and flux sufficient to maintain in the tapped slag (44) an FeO content of about 5 weight percent or less and maintain in the tapped iron (46) a carbon content of about 0.5 to 5 weight percent.
Cox James H.
Elliott John F.
Fruehan Richard J,
Cox James H.
Elliott John F.
Frances P. Elliott Executrix Of The Estate Of John F. Elliott (deceas Ed) To Steel
Fruehan Richard J,
Osler Hoskin & Harcourt Llp
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