Evaluation of Molybdenum Concentrates

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

“…The strongest diffraction peak is indexed to the (002) plane of MoS 2 , which means that a large number of grains are in parallel orientation, which is in good agreement with the literature. 25,28,44 The peak at 2 θ = 14.4° is an indication of the sulphur content of the concentrate. 32,45…”

“…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.…”

“…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. Their experiments showed that 33% of the copper was dissolved in the first 60 min of a three-hour reaction.…”