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.
Cite this paper
P. Mishra, B. Kumar Mohapatra, P. Kumar Mallick and K. Mahanta, "Influence of Microstructure on Beneficiation of Low-Grade Siliceous Manganese Ore from Orissa, India," Journal of Minerals and Materials Characterization and Engineering, Vol. 1 No. 3, 2013, pp. 80-84. doi: 10.4236/jmmce.2013.13015.
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