Abstract
Detailed characterization and beneficiation of the banded hematite jasper (BHJ) from Joda area, eastern India, was studied. The main purpose of this study is to produce a pellet feed from the BHJ ore using a simple flow sheet. The feed sample contained total Fe (35.31%), SiO2 (48.73%), Al2O3 (0.58%) and loss of ignition (1.02%). Characterization studies such as grain size analysis, XRD, liberation study and microscopic study were performed to ascertain different minerals. Size-wise chemical analysis indicated that the finer fraction contained more silica and less iron value. Liberation analysis indicated that maximum iron grains were liberated below 150 micron size. Considering the characterization result, a four-stage processing flow sheet was described for the beneficiation of BHJ ore. The result from beneficiation showed that the iron value could be enhanced to 63.9% with a yield of approximately 29.4% while decreasing the silica value to 8.2%.
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