Patent · US Expired

Process for the production of iron from iron ores and apparatus for carrying out said process

US4032121A · kind A · utility

8Cited by

1References

5Claims

0Family size

Assignee

Vereinigte Osterreichische Eisen- und Stahlwerke - Alpine Montan Aktiengesellschaft · AT

Inventors

Kurt Stift · Leoben, AT
Helwig Vacek · Leoben, AT

Key dates

Filing date	Dec 15, 1975
Grant date	Jun 28, 1977
Priority date	—
Expiry date	Dec 15, 1995

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21B13/14
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process and apparatus for the production of iron from iron ores, in which the ore is being heated and reduced in a rotary kiln by a treatment with solid carbon and with flame gas flowing in a countercurrent, the reduced iron is being collected and overheated in a first hearth furnace and is being fed in batches into a second hearth furnace, and is being converted there to pig iron, cast iron or steel, characterized in that the hot exhaust gases formed in the second hearth furnace are passed into the first hearth furnace and then through the rotary kiln together with the hot exhaust gases produced in the first hearth furnace.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.