Beneficiation of two different low-grade Indonesian manganese ores to improve the Mn/Fe ratio

F. Nurjaman, S. Amarela, A. Noegroho, Deni Ferdian, Bambang Suharno

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Citations (Scopus)

Abstract

The beneficiation of two different low-grade manganese ores had been done by gravity separation and reduction-roasting process followed by the magnetic separation to improve their Mn/Fe ratio. The effect of particle size and temperature of reduction-roasting in this beneficiation process had been investigated clearly. XRF and XRD analyzer were used to characterize the as-received and beneficiated of these low-grade manganese ores. From the result, the manganese oxide in the form of pyrolusite (MnO 2 ) was easier to beneficiate for enhancing the Mn/Fe ratio than in the form of pyroxmangite (MnSiO 3 ) and grossular manganoan (Ca 1.3 Mg 0.1 Mn 0.8 Fe 0.8 Al 2 (SiO 4 ) 3 . The optimum beneficiation resulted from the reduction-roasting process of low-grade manganese ore in -40+60 mesh at temperature 700°C followed by the magnetic separation process. It had improved the Mn/Fe ratio of this low-grade manganese ore from 1.39 into 4.0.

Original languageEnglish
Title of host publicationInternational Conference on Chemistry, Chemical Process and Engineering, IC3PE 2017
EditorsIs Fatimah, Gani Purwiandono
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735414914
DOIs
Publication statusPublished - 17 Mar 2017
EventInternational Conference on Chemistry, Chemical Process and Engineering, IC3PE 2017 - Yogyakarta, Indonesia
Duration: 15 Nov 201616 Nov 2016

Publication series

NameAIP Conference Proceedings
Volume1823
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference on Chemistry, Chemical Process and Engineering, IC3PE 2017
Country/TerritoryIndonesia
CityYogyakarta
Period15/11/1616/11/16

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