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Mineralogical Characterization and Gravity Separation of Lean Grade Mixed Copper Ore of Malanjkhand Deposit

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Abstract

An in-depth mineralogical characterization has been carried out to develop a suitable beneficiation process route for a low-grade copper ore. Characterization and preliminary gravity separation studies were undertaken on low-grade Malanjkhand mixed copper ore to remove siliceous gangue and improve the copper grade. The characterization results indicated that the mixed copper ore was of very low grade (0.48% Cu) with a predominant amount of Quartz (74.12%) and with a moderate amount of feldspar and mica. The presence of chalcopyrite and pyrite in minor quantity along with malachite in traces was noted. Preliminary experiments were performed in a Mozley mineral separator by varying flow rate, amplitude and time to discard maximum quantity of liberated quartz. The optimum values of the variables for the efficient pre-concentration were determined based on the separation efficiency. The characterization and preliminary separation studies indicated that gravity-based separation could be opted for the pre-concentration of such mixed copper ore.

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Acknowledgements

The authors express their sincere thanks to controller general, Indian Bureau of Mines, Nagpur and the ore dressing division for kind support during the characterization studies. We thank Editor-in-Chief and the reviewer for their painstaking reviews to improve the quality of the manuscript.

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Authors and Affiliations

  1. Department of Fuel and Mineral Engineering, IIT (ISM) Dhanbad, Dhanbad, Jharkhand, India

    Silpa Sweta Jena, Mousumi Gharai, N. R. Mandre & R. Venugopal

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  1. Silpa Sweta Jena
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  2. Mousumi Gharai
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  3. N. R. Mandre
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  4. R. Venugopal
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Correspondence to Silpa Sweta Jena.

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Jena, S.S., Gharai, M., Mandre, N.R. et al. Mineralogical Characterization and Gravity Separation of Lean Grade Mixed Copper Ore of Malanjkhand Deposit. Trans Indian Inst Met 72, 245–255 (2019). https://doi.org/10.1007/s12666-018-1478-6

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