VERFAHREN ZUM HERSTELLEN VON EISENPULVER

Iron oxide particles are made by spray calcination and the oxide is reduced at least substantially in CO at temperatures between 800 DEG and 1000 DEG C. The oxide is heat-treated prior to calcination or CaO is added to enhance formation of iron fibers. The reducing atmosphere may in parts include hy...

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Bibliographische Detailangaben
Hauptverfasser:	HEWING,JOSEF,DR, DE,. HAAS,HANS, GREBE,KLAUS,DR, DAUTZENBERG,NORBERT,DR
Format:	Patent
Sprache:	ger
Schlagworte:	CASTING CHEMISTRY MAKING METALLIC POWDER MANUFACTURE OF ARTICLES FROM METALLIC POWDER MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON PERFORMING OPERATIONS POWDER METALLURGY TRANSPORTING WORKING METALLIC POWDER
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Beschreibung
Zusammenfassung:	Iron oxide particles are made by spray calcination and the oxide is reduced at least substantially in CO at temperatures between 800 DEG and 1000 DEG C. The oxide is heat-treated prior to calcination or CaO is added to enhance formation of iron fibers. The reducing atmosphere may in parts include hydrogen or the last phase of reduction is carried out in hydrogen. The iron cake is cooled and broken up in a grinder. The resulting powder has low bulk density due to a fiber-like, non-porous consistency of its particles. Grinding may continue to increase bulk density.