The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 2001
Filed:
Dec. 29, 1998
Leopold Werner Kepplinger, Leonding, AT;
Johann Wurm, Bad Zell, AT;
Herbert Mizelli, Micheldorf, AT;
Walter Rainer Kastner, Zwettl a.d. Rodl, AT;
Günther Brunnbauer, Wallern, AT;
Deutsche Voest-Alpine Industrieanlagenbau GmbH., Duesseldorf, DE;
Abstract
A method for producing a hot CO- and H,-containing reducing gas utilized for the reduction of lumpy metal ore, in particular iron ore, which comprises forming the reducing gas in a gasification zone by the gasification of carbon carriers, in particular coal, taking place in the presence of a supply of oxygen and subsequently cooling the reducing gas down to a reducing-gas temperature favorable to the reduction process, wherein H,O and/or CO,is added to a reducing gas which has been subjectged to a cooling operation that does not effect an addition of H,O/CO,in order to prevent the Boudouard and heterogeneous water-gas reaction and a resultant heating of the reducing gas, wherein the reducing gas is converted to a reducing gas that is thermodynamically more stable at the reducing-gas temperature.