Selective leaching of Mo from an off-grade gravity lead concentrate in Na2CO3 solution-Reference-Cited by-同舟云学术

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

Published:2019 Issue:2 Volume:55 Page:253-259
ISSN:1450-5339
Container-title:Journal of Mining and Metallurgy, Section B: Metallurgy
language:en
Short-container-title:J min metall B Metall

Author:

Liu Z.-X.¹,Luo Y.-T.²,Luo W.-B.²,Li B.-X.²,Wu X.-W.³

Affiliation:

1. The Collaborative Innovation Center of Manganese-Zinc-Vanadium Industrial Technology, Jishou University, Jishou, PR China + College of Physics, Mechanical and Electrical Engineering, Jishou University, Jishou, PR China + National Demonstration Center for

2. The Collaborative Innovation Center of Manganese-Zinc-Vanadium Industrial Technology, Jishou University, Jishou, PR China + College of Physics, Mechanical and Electrical Engineering, Jishou University, Jishou, PR China

3. Key Laboratory of Mineral Cleaner Production and Exploit of Green Functional Materials in Hunan Province, Jishou University, Jishou, PR China

Abstract

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 the 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, including Na2CO3 concentration, liquid-to-solid ratio, temperature, and leaching time, were studied. Under these optimum leaching conditions (Na2CO3 2 M, 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 %, respectively.

Publisher

National Library of Serbia

Subject

Materials Chemistry,Metals and Alloys,Mechanics of Materials,Geotechnical Engineering and Engineering Geology