C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
C21B 5/06 (2006.01) C21B 7/00 (2006.01) C21B 7/14 (2006.01) C21B 11/00 (2006.01) C21B 13/00 (2006.01) C21B 13/14 (2006.01) C21C 5/56 (2006.01)
Patent
CA 2125821
ABSTRACT The invention relates to process for the smelting reduction of ores or pre-reduced metal carriers which arrive in a separate settling tank from a smelting reduction reactor via a connection piece in the form of an emulsion composed of slag, liquid metal and floating coke particles and are converted in the settling tank to pig iron with a low carbon content by blowing oxygen, characterized in that, in addition to the hard jet of oxygen which is fed via lances, a soft jet of oxygen is blown into the upper part of the settling tank and, by oxidizing a portion of the floating coke, results in an increase in the gas volume, the gas flows into the smelting reduction reactor via the connection piece and in 80 doing drives back the coke particles floating on the emulsion opposite the direction of flow of the emulsion. The invention also relates to an apparatus for effecting the process.
Fetherstonhaugh & Co.
Mannesmann Aktiengesellschaft
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