Method and apparatus for producing hot direct reduced iron

Details Method and apparatus for producing hot direct reduced iron Method and apparatus for producing hot direct reduced iron

C - Chemistry, Metallurgy

21

B

53/32, 39/55

C21B 13/02 (2006.01) C21B 7/10 (2006.01) F27B 1/24 (2006.01)

Patent

CA 1290573

ABSTRACT A method and an apparatus for the gaseous reduction of particulate iron ores is disclosed, wherein the reduced ore, commonly called DRI (Direct Reduced Iron) or sponge iron, is treated in a vertical shaft moving bed furnace and discharged from said furnace in solid particulate form at high temperature, e.g. above 500°C. The shaft furnace is of the type wherein a bed of particles descends by gravity through said furnace which has an upper section where ore pellets, lumps, or the like are reduced by reaction with a hot reducing gas, and a lower section of a downwardly tapering, preferably, in a generally conical shape, which converges to an outlet discharge orifice of smaller cross sectional area than the rest of said furnace. A heat- exchanging means, optionally combined with insulation, in contact with the external surface of the wall of said lower section permits control of the temperature of said wall, whereby solids-flow problems in the furnace are minimized, producing a smooth operation and the desired hot exit temperature of the discharged DRI all in a reactor of a practical foreshortened size.

532111

Affiliated with

Also associated with

Rating

Method and apparatus for producing hot direct reduced iron does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for producing hot direct reduced iron, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for producing hot direct reduced iron will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1261277