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Indian Ocean manganese nodules offer a lucrative resource for valuable strategic metals like Cu, Co and Ni. A novel bio-leaching process to recover these metals in presence of organic reductants from the nodules at near neutral pH and ambient temperature is presented in this paper.The cell-free growth supernatant of a marine microorganism isolated from the nodules was employed in bioleaching studies...
Laboratory batch flotation tests were performed on a sample of bulk slow cooled converter matte (Cu:Ni = 1) to optimize the time in each of the separation stages. Numerical simulations were carried out to estimate a continuous circuit material balance for the conditions selected. An experimental simulation of a continuous circuit (locked cycle test) readily came to steady state and there was reasonable...
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