METHOD OF MAKING IRON POWDER

METHOD OF MAKING IRON POWDER

Iron oxide particles are made by spray calcination and the oxide is reduced at least substantially in CO at temperatures between 800.degree. and 1000.degree. 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 inc...

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Bibliographische Detailangaben
Hauptverfasser: GREBE, KLAUS, HEWING, JOSEF, DAUTZENBERG, NORBERT, DE HAAS, HANS
Format: Patent
Sprache:eng ; fre
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.degree. and 1000.degree. 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 hydrogren 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, nonporous consistency of its particles. Grinding may continue to increase bulk density.