Mineralogical Characterization and Gravity Separation of Lean Grade Mixed Copper Ore of Malanjkhand Deposit
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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.
KeywordsMixed copper ore Characterization Pre-concentration Mozley Mineral Separator (MMS) Separation efficiency (SE) and enrichment ratio (ER)
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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