Process and apparatus for directly making liquid pig- iron...

Details Process and apparatus for directly making liquid pig- iron... Process and apparatus for directly making liquid pig- iron...

C - Chemistry, Metallurgy

21

B

53/43, 39/60

C21B 13/02 (2006.01) C21B 13/00 (2006.01) C21B 13/14 (2006.01)

Patent

CA 1189705

ABSTRACT OF THE DISCLOSURE: A process and a device are described for directly making liquid pig-iron from coarse iron ore. Hot sponge- iron particles are directly conveyed by a worm conveyor through a communicating passage from a direct-reduction blast-furnace shaft into a smelter-gasifier, and a stream of gas flows, after cooling to below 950°C, in counter-current to the sponge-iron particles, from the smelter-gasifier to the blast-furnace shaft, this gas stream having a volumetric flow-rate not more than 30 percent of the total reduction- gas flow reaching the blast-furnace shaft.

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