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

US4448402A · kind A · utility

Assignees

• Korf Engineering GmbH · DE
• Voest-Alpine · AT

Inventors

• Ralph Weber · Rio de Janeiro, BR
• Bernt Rollinger · Baden-Baden, DE
• Rolf Hauk · Düsseldorf, DE
• Michael J. Nagle, Jr. · Baden-Baden, DE
• Bernhard Rinner · Frankenthal (Pfalz), DE

Key dates

• Filing date: May 12, 1983
• Grant date: May 15, 1984
• Expiry date: May 12, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C21B2100/44
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A device is 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).