Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Investigation of transformations of low-grade manganese ore during the roasting process
Cent Met Res & Dev Inst CMRDI, Pyrometallurg Proc Ores Dept, Cairo, Egypt; Cent Met Res & Dev Inst CMRDI, Pyrometallurg Proc Ores Dept, PO Box 87, 1, El-felezat St El-Tebbin, Cairo, Helwan, Egypt.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering. Cent Met Res & Dev Inst CMRDI, Pyrometallurg Proc Ores Dept, Cairo, Egypt.ORCID iD: 0000-0003-3833-0817
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Minerals and Metallurgical Engineering. Pyrometallurgical Processing of Ores Department, Central Metallurgical Research and Development Institute (CMRDI), Cairo, Egypt.ORCID iD: 0000-0002-2358-7719
2023 (English)In: Mineral Processing and Extractive Metallurgy: Transactions of the Institute of Mining and Metallurgy, ISSN 2572-6641, E-ISSN 2572-665X, Vol. 132, no 1, p. 62-72Article in journal (Refereed) Published
Abstract [en]

The transformations of low-grade manganese ore were investigated during roasting in the air at different temperatures up to 1200 degrees C. The transformations were followed up by XRD and TGA-DTA. Moreover, the morphology and magnetic properties were determined by SEM and VSM. It was observed that MnO2 transformed to the lower oxide Mn5O8 at 500 degrees C and then to bixbyite (Mn2O3) at 600 degrees C. Finally, the bixbyite decomposed to hausmannite (Mn3O4) at 800 degrees C. Increasing the roasting temperature to 900 degrees C induced a reaction between hematite and hausmannite and led to the formation of a small amount of solid solution of the ferrite spinel MnFe2O4. Further increase in temperature to 1000 degrees C led to the formation of a solid solution of braunite (Mn7SiO12) which decomposed to rhodonite (MnSiO3) at 1200 degrees C. The magnetic susceptibility of the original ore gradually increased with the roasting temperature, from 0.119 x 10(-3) at ambient temperature to a maximum value of 80 x 10(-3) at 1200 degrees C.

Place, publisher, year, edition, pages
Taylor & Francis, 2023. Vol. 132, no 1, p. 62-72
Keywords [en]
Low-grade manganese ore, roasting process, transformations, manganese ferrite, magnetic properties
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-95298DOI: 10.1080/25726641.2022.2161736ISI: 000904693500001Scopus ID: 2-s2.0-85145485625OAI: oai:DiVA.org:ltu-95298DiVA, id: diva2:1733621
Note

Validerad;2023;Nivå 2;2023-04-18 (joosat);

Available from: 2023-02-02 Created: 2023-02-02 Last updated: 2024-02-14Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Elsadek, MohamedAhmed, Hesham

Search in DiVA

By author/editor
Elsadek, MohamedAhmed, Hesham
By organisation
Minerals and Metallurgical Engineering
In the same journal
Mineral Processing and Extractive Metallurgy: Transactions of the Institute of Mining and Metallurgy
Metallurgy and Metallic Materials

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 127 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf