Mössbauer study of iron reduction in hematite containing mineral originated from Aswan area in Egypt

  • E. Kuzmann
  • N. Eissa
  • B. Molnár
  • A. Vértes
Article
  • 32 Downloads

Abstract

Mössbauer spectroscopy was used to study iron reduction in mineral originated from Aswan area in Egypt. The Mössbauer spectra of samples heat treated at 1000 °C in hydrogen atmosphere show a gradually reduction process of hematite. The main phase of sample aged for 1 h is magnetite, while alpha-iron as well as some silicates and wustite type oxide can be detected in sample aged for 3 h. Further aging of sample results in dissolution of alloying elements /Si, Al/, being present in the samples. This process starts already in samples aged at 1000 °C for 4 h, but it is more expressive in minerals heat treated at 1200 °C or 1300 °C, when all paramagnetic phases disappeared.

Keywords

Oxide Hydrogen Iron Atmosphere Silicate 

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Copyright information

© Akadémiai Kiadó 1988

Authors and Affiliations

  • E. Kuzmann
    • 1
  • N. Eissa
    • 2
  • B. Molnár
    • 3
  • A. Vértes
    • 1
  1. 1.Laboratory of Nuclear ChemistryEötvös UniversityBudapestHungary
  2. 2.Physics Department, Faculty of ScienceAl-Azhar UniversityCairoEgypt
  3. 3.Central Research Institute for PhysicsBudapestHungary

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