F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
39/46
F27B 15/10 (2006.01) B01J 8/44 (2006.01) C21B 13/14 (2006.01) F27B 15/00 (2006.01)
Patent
CA 2036916
A prereduction furnace of a smelting reduction facility of iron ore consisting of a fluidizing prereduction chamber installed at the upper part of the prereduction furnace wherein iron ores are fed and prereduced, a gas blowing chamber installed at the lower part of the prereduction furnace wherein a reducing gas is fed, a distributor installed between the fluidizing prereduction chamber and the gas blowing chamber, a first plurality of nozzles passing through the distributor for injecting said reducing gas in the blowing chamber into the prereduction chamber, a discharge pipe for discharging prereduced iron ores installed at a bottom center of the prereduction chamber extending through said distributor, wherein a cooling fluid flows; at least two horizontally movable purging pipes below the distributor, and a second plurality of nozzles attached to the horizontally movable purging pipes for injecting a purging gas to a bottom surface of the distributor.
Kanatani Genji
Matsuo Masahiro
Nkk Corporation
Ridout & Maybee Llp
LandOfFree
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