Magnetic and flotation studies of banded hematite quartzite (BHQ) ore for the production of pellet grade concentrate |
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| Authors: | B Das B K Mishra S Prakash S K Das P S R Reddy S I Angadi |
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| Institution: | (1) Institute of Minerals and Materials Technology, CSIR, Bhubaneswar, 751013, India |
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| Abstract: | To identify and establish beneficiation techniques for banded hematite quartzite (BHQ) iron ore, a comprehensive research
on BHQ ore treatment was carried out. The BHQ ore was assayed as 38.9wt% Fe, 42.5wt% SiO2, and 1.0wt% Al2O3. In this ore, hematite and quartz are present as the major mineral phases where goethite, martite, and magnetite are present
in small amounts. The liberation of hematite particles can be enhanced to about 82% by reducing the particle size to below
63 μm. The rejection of silica particles can be obtained by magnetic and flotation separation techniques. Overall, the BHQ
ore can be enriched to 65.3wt% Fe at 61.9% iron recovery. A flowsheet has been suggested for the commercial exploitation of
the BHQ ore. |
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