A direct-reduction process for directly reducing particulate iron-oxide-containing material

In a process for the direct reduction of particulate iron oxide-containing material in the fluidised-bed process, reformed gas is mixed with the top gas resulting from the direct reduction of the iron oxide-containing material and is fed as reducing gas to a fluidised-bed reducing zone. To decrease...

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Bibliographic Details
Main Authors KONSTANTIN MILIONIS, SIEGFRIED ZELLER, KARL CZERMAK, JOHANNES LEOPOLD SCHENK
Format Patent
LanguageEnglish
Published 15.06.1994
Edition5
Subjects
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
MANUFACTURE OF IRON OR STEEL
METALLURGY
METALLURGY OF IRON
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:In a process for the direct reduction of particulate iron oxide-containing material in the fluidised-bed process, reformed gas is mixed with the top gas resulting from the direct reduction of the iron oxide-containing material and is fed as reducing gas to a fluidised-bed reducing zone. To decrease the energy consumption and fully utilise the potential of the reducing gas, both the top gas and the reformed gas are subjected to a CO2 scrubbing and the reducing gas formed by mixing top gas and reformed gas is adjusted to an H2 content in a range between 45 and 75%, preferably between 50 and 65%, and a CO content in a range between 10 and 20%.
Bibliography:Application Number: ZA19930003453