Apparatus for the direct reduction of iron ore to sponge iron

Details Apparatus for the direct reduction of iron ore to sponge iron Apparatus for the direct reduction of iron ore to sponge iron

1975-12-17

1977-12-13

Lake, Roy

Metallurgical apparatus

With means treating or handling gases exhausted by treating...

By means recycling exhaust gas

266197, C21B 1302

Patent

active

040625290

ABSTRACT:
In a shaft furnace for the direct reduction of iron ore in which hot reducing gas is introduced at the bottom of the furnace and removed from the top of the furnace, means for recirculating at least a portion of the furnace exhaust gas are provided along with means for introducing fresh gas into the recirculated gas stream and means to heat the gas stream introduced into the furnace. The improvement comprises providing means for desulfurizing the fresh gas stream prior to its joining the recycled exhaust gas and providing for dust removal, sulfur and CO removal in the recycled gas stream prior to its joining the fresh gas stream.

REFERENCES:
patent: 2929703 (1960-03-01), Agarwal et al.
patent: 3767379 (1973-10-01), Marion
patent: 3799521 (1974-03-01), Celada et al.
patent: 3905806 (1975-09-01), Cruse, Jr. et al.
patent: 3909244 (1975-09-01), Rose et al.

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