Process for directly making liquid pig-iron from coarse iron ore

Details Process for directly making liquid pig-iron from coarse iron ore Process for directly making liquid pig-iron from coarse iron ore

1981-09-10

1983-10-11

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

266183, C21B 1314

Patent

active

044090234

ABSTRACT:
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 (17) through a communicating passage (19) from a direct-reduction blast-furnace shaft (2) into a smelter-gasifier (1), and a stream (24) of gas flows, after cooling to below 950.degree. C., in counter-current to the sponge-iron particles, from the smelter-gasifier (1) to the blast-furnace shaft (2), this gas stream having a volumetric flow-rate not more than 30 percent of the total reduction-gas flow reaching the blast-furnace shaft (FIG. 1).

REFERENCES:
patent: 2889219 (1959-06-01), Halley
patent: 4235425 (1980-11-01), Beggs et al.
patent: 4238226 (1980-12-01), Sanzenbacher et al.
patent: 4248626 (1981-02-01), Scarlett et al.

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