Influence of Microstructure on Beneficiation of Low-Grade Siliceous Manganese Ore from Orissa, India

Patitapaban Mishra, Birendra Kumar Mohapatra, Pradeep Kumar Mallick, Khageswar Mahanta

Institute of Minerals and Materials Technology, Bhubaneswar, India.
OMDC Ltd., Thakurani, Orissa, India.
Ravenshaw University, Cuttack, India.

DOI: 10.4236/jmmce.2013.13015                

Abstract

Two low-grade siliceous manganese ores such 1) siliceous crystalline and 2) siliceous cherty types from north Orissa, Indiawas mineralogically characterized and investigated for their possible upgradation. Both the Mn-ore types were subjected to different physical beneficiation techniques under identical conditions and results reported. The results revealed that in the case of low-grade siliceous crystalline type Mn-ore a feed having 26% Mn could be upgraded to more than 45% Mn by dry magnetic separation with 69% recovery at 1.00 tesla magnetic intensity. But the cherty type Mn-ore could not respond well to any of the beneficiation techniques, particularly dry magnetic separation, because of poor liberation even at a size fraction below 100 mesh, though the other type gives best result at this size fraction.

Keywords

Siliceous Manganese Ore; Microstructure; Beneficiation

Conflicts of Interest

The authors declare no conflicts of interest.

References

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