Investigation of chalcopyrite removal from low-grade molybdenite using response surface methodology and its effect on molybdenum trioxide morphology by roasting.

Based on their findings, the most important factors were H 2 O 2 concentration, pulp density, and reaction temperature with reaction time being of marginal significance and rotation speed and H 2 SO 4 concentration not statistically significant factors. 4 On the other hand, Benzeşik et al. 25 investigated the effects of H 2 SO 4 concentration and the solid-to-liquid ratio on removal of copper from molybdenite concentrate and showed that 0.6 M H 2 SO 4 can remove Cu at contents of 2.56 wt% up to 95.92% efficiency. 25 Petrovic et al. 26 studied leaching the chalcopyrite concentrate via HCl acid and H 2 O 2 as an acid medium and strong oxidizer solution, respectively.

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