Patent · US Expired

Method for producing directly reduced iron in a layered furnace

US6395057B1 · kind B1 · utility

1Cited by

3References

13Claims

0Family size

Assignee

PAUL WURTH S.A. · LU

Inventors

Romain Frieden · Beidweiler, LU
Thomas Hansmann · Trier, DE
Marc Solvi · Schifflange, LU

Key dates

Filing date	Aug 16, 2000
Grant date	May 28, 2002
Priority date	—
Expiry date	Aug 16, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/20
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for producing reduced iron in a layered furnace which includes several superimposed layers. Ore is continuously fed into the layered furnace, deposited on the uppermost layer, and gradually transferred to the lower layer. A reducing agent is deposited on the uppermost layer and/or layers thereunder and is reacted with the ore in order to form directly reduced iron. The directly reduced iron and reducing agent residues are discharged in the vicinity of the lowest layer of the furnace.

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