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A Study on Removal of Clay Minerals from Barbil Region Iron Ore; Effect of Scrubbing Followed by Pelletization

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Abstract

The presence of appreciable quantity of clay mineral in Indian hematite ore needs an attrition technique using screw scrubber in the beneficiation circuit to remove the ultrafine clays and avoid downstream operational problems. Spectroscopic analysis revealed that iron ore samples obtained from the Barbil region of Odisha contain a high amount of silica and alumina in the form of clay minerals (e.g., kaolinite) contributed as a loss on ignition (LOI) in the iron-making process. Iron ore fines of below 10 mm size were subjected to a laboratory-scale screw scrubber, and the effectiveness of scrubbing as well as the pelletization of the scrubbed product was investigated. The screw scrubber in the beneficiation circuit helps to remove the clay minerals, causes an increase in iron values from 63.65% Fe(T) to 66.18% Fe(T), with improved physical (CCS of 325 kg/pellet) and metallurgical (RDI of 2.24%) pellet properties.

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Acknowledgements

The authors thank the Director, CSIR-IMMT, Bhubaneswar, for permitting to publish this paper. The authors are also thankful to the scientists and technical staffs of CSIR-IMMT, Bhubaneswar who helped in preparing the manuscript directly or indirectly.

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Authors and Affiliations

  1. Department of Fuel, Minerals and Metallurgical Engineering, IIT-ISM, Dhanbad, 826004, India

    Soumya Sahoo & Shatrughan Soren

  2. CSIR – Institute of Minerals and Materials Technology, Bhubaneswar, Odisha, 751013, India

    Sachida Nanda Sahu, Ranajit Kumar Sahoo & Surendra Kumar Biswal

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  1. Soumya Sahoo
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  2. Sachida Nanda Sahu
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  3. Ranajit Kumar Sahoo
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  4. Shatrughan Soren
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Correspondence to Sachida Nanda Sahu.

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Sahoo, S., Sahu, S.N., Sahoo, R.K. et al. A Study on Removal of Clay Minerals from Barbil Region Iron Ore; Effect of Scrubbing Followed by Pelletization. Mining, Metallurgy & Exploration 38, 105–116 (2021). https://doi.org/10.1007/s42461-020-00292-9

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