An innovative technology for recovery of zinc, lead and silver from zinc leaching residue

• Autorzy: Zheng Y.-X. , Lv J.-F. , Liu W. , Qin W.-Q. , Wen S.-M.

Identyfikatory

DOI

10.5277/ppmp160233

• Języki publikacji: EN

Abstrakty

EN

Zinc leaching residue is a good source of zinc and has a great potential to be utilized. However, it is very difficult to recover lead, zinc and silver from the residue by traditional technologies. In this study, a new technology based on conversions of PbSO4 and ZnSO4 in the residue to their respective sulfides by reduction roasting with coal powder followed by a flotation treatment was developed. The effects of roasting temperature, coal dosage, reaction time and pyrite dosage were investigated at a laboratory scale. The results showed that the conversion extent of PbSO4 and ZnSO4 under the optimal experimental conditions was 71.89 and 69.76%, respectively. A flotation concentrate containing 39.13% Zn, 6.93% Pb and 973.54 g/Mg Ag was obtained from the treated material, and the recovery of Zn, Pb and Ag was 48.38, 68.23 and 77.41%, respectively. The tailing containing ZnFe2O4 or Fe3O4 could be either stockpiled or further disposed.

Słowa kluczowe

EN

zinc leaching residue; lead sulfate; zinc sulfate; reduction roasting; flotation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2016
• Tom: Vol. 52, iss. 2
• Strony: 943--954
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Zheng Y.-X.

• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China

autor

Lv J.-F.

• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China

autor

Liu W.

• School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China

autor

Qin W.-Q.

• School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China

autor

Wen S.-M.

• State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China
• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China

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