Other

Deutsche Voest-alpine Industrieanlagenbau Gmbh

Walter Rainer Kastner

Johann Wurm

Leopold Werner Kepplinger

Herbert Mizelli

G&uuml;nther Brunnbauer

In a method for producing a hot CO- and H -containing reducing gas serving for the reduction of fine-grained metal ore, in particular iron ore, the reducing gas is formed in a gasification zone by a gasification of carbon carriers, in particular coal, taking place under the supply of oxygen and subsequently is cooled down to a reducing-gas temperature favorable to the reduction process. In order to produce a thermodynamically more stable reducing gas, the reducing gas by the addition of H O and/or CO &mdash;in order to prevent the Boudouard and heterogeneous water-gas reaction and a resultant heating of the reducing gas&mdash;is converted to a reducing gas that is thermodynamically more stable at the reducing-gas temperature.

Method and plant for producing a reducing gas serving for the reduction of metal ore

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.

Growing community of inventors

Zwettl a.d. Rodl, Austria

Walter Rainer Kastner