Selective leaching of Mo from off-grade gravity lead concentrate in Na2CO3 solution

  • liu zhixiong Jishou Univdersity
  • Yi-ting Luo
  • Wen-bo Luo
  • Bin-xuan Li
  • Xian-wen Wu

Abstract


A green process was developed to treat an off-grade gravity lead concentrate. The selective leaching of Mo from an off-grade gravity lead concentrate was investigated in Na2CO3 solution using air as an oxidant. The leaching behaviors of Mo and Pb were predicted by the thermodynamic phase diagrams of Pb-Mo-C-H2O system. The oxidation mechanisms of those sulfides in the off-grade gravity lead concentrate were confirmed by these methods of X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). The influence of operating factors on the leaching behaviors of Mo and Pb was studied including Na2CO3 concentration, liquid-to-solid ratio, temperature and leaching time. Under these optimum leaching conditions (Na2CO3 2 mol/L, leaching time 8 h, temperature 75 °C, air-flow rate 2.0 m3/h and L/S ratio of 10/1 mL/g), the extraction of Mo and Pb was up to 97.70 and 0.73 percent, respectively.

Author Biographies

liu zhixiong, Jishou Univdersity
Yi-ting Luo
Wen-bo Luo
Bin-xuan Li
Xian-wen Wu

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Published
2019/07/25
How to Cite
zhixiong, liu, Luo, Y.- ting, Luo, W.- bo, Li, B.- xuan, & Wu, X.- wen. (2019). Selective leaching of Mo from off-grade gravity lead concentrate in Na2CO3 solution. Journal of Mining and Metallurgy, Section B: Metallurgy, 55(2), 153. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/20287
Issue
Vol. 55 No. 2 (2019)
Section
Original Scientific Paper

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