Fundamental investigation of reduction and dissolution behavior of manganese ore at high temperature

Yusuke Fujii, Yoshie Nakai, Yu Ichi Uchida, Naoki Kikuchi, Yuji Miki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The high temperature reduction behavior of manganese ore was investigated with the aim of utilizing ore as a more economical manganese source in the steelmaking process. The melting temperature and phase change behaviors of raw and sintered manganese ores were measured by high temperature X-ray diffraction and DTA in the temperature range from 303K to 1773K under atmospheric and vacuum conditions. The melting temperatures of the raw and sintered manganese ores were 1688K and 1732K, respectively. The main manganese compounds in the raw and sintered manganese ores were CaMn6SiO12 and MnO, Mn3O4 respectively. Under a vacuum (0.13kPa), both the raw and sintered manganese ores were reduced to MnO above 1473K, whereas under the atmospheric condition (101.3kPa), the manganese ores were reduced to Mn3O4 rather than MnO. The obtained results were discussed from a thermodynamic viewpoint.

Original languageEnglish
Title of host publicationAdvances in Molten Slags, Fluxes, and Salts
Subtitle of host publicationProceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016
EditorsRamana G. Reddy, Pinakin Chaubal, P. Chris Pistorius, Uday Pal
PublisherSpringer International Publishing AG
Pages63-70
Number of pages8
ISBN (Print)9783319486253
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016 - Seattle, United States
Duration: 2016 May 222016 May 25

Publication series

NameAdvances in Molten Slags, Fluxes, and Salts: Proceedings of the 10th International Conference on Molten Slags, Fluxes and Salts 2016

Conference

Conference10th International Conference on Molten Slags, Fluxes and Salts, MOLTEN 2016
Country/TerritoryUnited States
CitySeattle
Period16/5/2216/5/25

Keywords

  • Manganese ore
  • Melting point
  • TG-DTA
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys

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