A PROCESS FOR THE DIRECT REDUCTION OF PARTICULATE IRON-CONTAINING MATERIAL AND A PLANT FOR CARRYING OUT THE PROCESS

With a process for the direct reduction of particulate iron-containing material by fluidization, reformed gas, at least partially freed from CO2, is supplied to a fluidized- bed reduction zone as a reducing gas and is carried off from the same as a top gas and at least a portion of the top gas toget...

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Bibliographic Details
Main Authors ROSSMANN, GOTTFRIED, CIP, GERHARD, MILIONIS, KONSTANTIN, WHIPP, ROY HUBERT, JR
Format Patent
LanguageEnglish
French
Published 19.04.2005
Edition6
Subjects
CHEMISTRY
MANUFACTURE OF IRON OR STEEL
METALLURGY
METALLURGY OF IRON
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Summary:With a process for the direct reduction of particulate iron-containing material by fluidization, reformed gas, at least partially freed from CO2, is supplied to a fluidized- bed reduction zone as a reducing gas and is carried off from the same as a top gas and at least a portion of the top gas together with reformed gas is utilized for direct reduction. To economize on parts of the plant that are impinged on by reducing gas and in order to achieve savings in terms of heating costs, CH4 and N2 are, in addition to CO 2, at least partially removed by adsorption, from 50 to 100 % of the reformed gas and 0 to 100 % o f the top gas, and the tail gas removed from the reformed gas and/or the top gas by adsorption is utilized as a heating gas (Fig.1).
Bibliography:Application Number: CA19962207395