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Mamdouh Omran, Timo Fabritius, Ahmed M. Elmahdy, Nagui A. Abdel-Khalek, Mortada El-Aref, Abd El-Hamid Elmanawi, XPS and FTIR spectroscopic study on microwave treated high phosphorus iron ore, Applied Surface Science, Volume 345, 2015, Pages 127-140, ISSN 0169-4332, https://doi.org/10.1016/j.apsusc.2015.03.209

XPS and FTIR spectroscopic study on microwave treated high phosphorus iron ore

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Author: Omran, Mamdouh1,2; Fabritius, Timo1; Elmahdy, Ahmed M.2;
Organizations: 1Process Metallurgy Research Group, Faculty of Technology, University of Oulu, Finland
2Mineral Processing and Agglomeration Lab, Central Metallurgical Research and Development Institute, Cairo, Egypt
3Geology Department, Faculty of Science, Cairo University, Giza 12613, Egypt
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.7 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2020041618889
Language: English
Published: Elsevier, 2015
Publish Date: 2020-04-16
Description:

Abstract

A growing interest in microwave heating has emerged recently. Several potential microwave applications regarding minerals’ processing have been investigated. This paper investigates the effect of microwave radiation on Egyptian high phosphorus iron ore. Three different iron ore samples have varying Fe₂O₃ and P₂O₅ contents and mineralogical textures were studied. A comparative study has been carried out between untreated and microwave treated iron ore. XRD and FTIR analyses showed that after microwave radiation the crystallinity of iron bearing minerals (hematite) increased, while the functional chemical groups of phosphorus bearing minerals (fluorapatite) and other gangues dissociated. High resolution XPS analyses of Fe 2p peaks showed that after microwave radiation a portion of Fe(+III) was reduced to Fe(+II). This means that after microwave radiation iron oxide (hematite, Fe3+) transformed into more magnetic phase. The results indicated that microwave radiation had a positive effect on the magnetic properties of iron oxide, through formation of ferromagnetic phases.

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Series: Applied surface science
ISSN: 0169-4332
ISSN-E: 1873-5584
ISSN-L: 0169-4332
Volume: 345
Pages: 127 - 140
DOI: 10.1016/j.apsusc.2015.03.209
OADOI: https://oadoi.org/10.1016/j.apsusc.2015.03.209
Type of Publication: A1 Journal article – refereed
Field of Science: 215 Chemical engineering
Subjects:
FTIR
High phosphorus iron ore
Microwave treatment
XPS
Article
Funding: The authors acknowledge CIMO (Center for International Mobility, Finland) and (Cultural Affair and Mission Sector, Egypt) for their financial grant for performing the present research work.
Copyright information: © 2015. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
  https://creativecommons.org/licenses/by-nc-nd/4.0/