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Reduction Mechanisms in Manganese Ore Reduction

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Abstract

Manganese ores are highly heterogeneous and contain various minerals with different levels of contained manganese and iron and therefore the ore reduction behavior is not uniform. Both phase chemistry and phase morphology at the reaction interface, at micron scale, must be investigated to understand the reaction mechanism effects in manganese ore reduction. This approach is applied here to reacted material mixture samples taken from the AlloyStream pilot plant furnace over a period of 4 months. The mineralogical features are reported and discussed. Deductions are made on the likely dominant reduction mechanism in this reaction system, given the phase morphology observations presented.

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Author notes

  1. Christian Reinke (Senior Instrument Scientist, Mintek) & Johannes Nell (Senior Consultant, Mintek)

    Present address: Mintek, Johannesburg, South Africa

Authors and Affiliations

  1. Mineralogy Division, Exxaro Resources, Pretoria, South Africa

    Theresa Coetsee (Principal Specialist)

  2. University of Johannesburg, Johannesburg, South Africa

    Christian Reinke (Senior Instrument Scientist, Mintek)

  3. Hatch, Johannesburg, South Africa

    Johannes Nell (Senior Consultant, Mintek)

  4. Carnegie Mellon University, Pittsburgh, PA, USA

    Petrus Christiaan Pistorius (POSCO Professor)

Authors
  1. Theresa Coetsee
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  2. Christian Reinke
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  3. Johannes Nell
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  4. Petrus Christiaan Pistorius
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Corresponding author

Correspondence to Theresa Coetsee.

Additional information

Manuscript submitted March 26, 2015.

Appendix

Appendix

Table AI Metal Analyses (SEM) for Samples A, B, and C
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Table AII Silicate Matrix Phase Analyses (SEM) for Samples A, B, and C
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Coetsee, T., Reinke, C., Nell, J. et al. Reduction Mechanisms in Manganese Ore Reduction. Metall Mater Trans B 46, 2534–2552 (2015). https://doi.org/10.1007/s11663-015-0414-y

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  • DOI: https://doi.org/10.1007/s11663-015-0414-y

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