Rath, R K and Mohanty, Sunati and Nayak, B and Singh, Ratnakar and Bhattacharyya, K K (2013) A Comparative Study on Processing of High Alumina Hematite Iron Ore by Gravity, Magnetic and Flotation Methods. Journal of Materials Science and Engineering A, 3(5) . pp. 349-354.
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The low grade iron ore sample contains both lumps and fines. It is mostly hematitic iron ore and considerable amount of goethitic/limonitic material is also present in it. The major impurities present were quartz and clay. It is observed that the iron bearing phases are poorly liberated above 300 µm and the liberation improves below 300 µm. More than 80% liberation is achieved below 106 µm. Based on the liberation data, the feed for the different beneficiation methods was prepared by stage crushed the ROM followed by grinding passing to 106µm and the ground material (-106 µm) was deslimed. The underflow was subjected to various beneficiation techniques such as tabling, enhanced gravity separator (EGS), wet high intensity magnetic separation (WHIMS) and flotation and the results are discussed. All the methods studied could able to produce pellet grade concentrate with iron content of 64.5%, however, a marginal higher yield was observed for WHIMS (81%).
|Uncontrolled Keywords:||Beneficiation, gravity, magnetic, enhanced gravity separation, flotation, low grade iron ore, desliming|
|Deposited By:||Dr. R.K. Rath|
|Deposited On:||01 Aug 2013 12:15|
|Last Modified:||01 Aug 2013 12:15|
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