Method and device for reduction of material containing metal oxide

Method and device for making a prereduced product suitable for final reduction in a reactor from material containing metal oxide. The material is preheated in a fluidized bed by means of hot exhaust gases from the subsequent prereduction stage. The hot material is melted and prereduced in a combusti...

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Bibliographische Detailangaben
Hauptverfasser:	ELVANDER, HANS, MALMSTROEM, ROLF
Format:	Patent
Sprache:	eng ; fin
Schlagworte:	BLASTING CHEMISTRY FERROUS OR NON-FERROUS ALLOYS FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MECHANICAL ENGINEERING METALLURGY OPEN SINTERING OR LIKE APPARATUS OVENS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS RETORTS TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	Method and device for making a prereduced product suitable for final reduction in a reactor from material containing metal oxide. The material is preheated in a fluidized bed by means of hot exhaust gases from the subsequent prereduction stage. The hot material is melted and prereduced in a combustion chamber using hot reducing gases from a subsequent final reduction stage. The prereduced material is finally reduced in the final reduction stage.