C - Chemistry – Metallurgy – 21 – B
Patent
C - Chemistry, Metallurgy
21
B
53/30
C21B 13/08 (2006.01)
Patent
CA 1230230
ABSTRACT OF THE DISCLOSURE A novel process is provided for the reduction of oxidic iron ores by means of solid high volatile reductants in a rotary tubular kiln in which oxygen containing gases or oxygen are introduced at localities distributed over the length of the kiln, at least part of the reductants being so introduced from a discharge end of the kiln as to be distributed over a substantial region of a charge bed of the kiln, and any balance of the reductants as well as the oxidic iron ores and additives being fed at a feed end of the kiln, wherein at least 60% of the solid high volatile reductants, excluding recycle char, are introduced from the discharge end and contain not more than 20% of the total reductants of fines components, of particle size less than 3 mm.
462624
Janssen Wilhelm
Ulrich Klaus
Fetherstonhaugh & Co.
Krupp (fried.) Gesellschaft Mit Beschrankter Haftung
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