Effect of preoxidation on copper flotation from copper-lead mixed concentrate

• Autorzy: Peng Zeng , Haiyun Xie , Yanling Jin , Pei Zhang , Jialing Chen , Liu Dianwen

Identyfikatory

DOI

10.37190/ppmp/163253

• Języki publikacji: EN

Abstrakty

EN

Flotation separation of galena and chalcopyrite is always a difficult problem in mineral processing. In this paper, the selective preoxidation of galena and chalcopyrite with sulfuric acid was developed, and then the two minerals were completely separated by flotation. The surface oxidation mechanism of galena and chalcopyrite with sulfuric acid was analyzed by Fourier transform infrared spectroscopy (FT-IR) and Atomic Force Microscopy (AFM), and the results showed that hydrophilic oxide film was formed on the galena surface, while the surface of chalcopyrite is still hydrophobic sulfide film, which led to the separation of the two minerals by flotation. In addition, the Response Surface Methodology (RSM) was used to analyze the influence of main preoxidation parameters on the flotation separation of copper-lead concentrate, and the parameters were further optimized, as follows: sulfuric acid concentration of 5.3 mol/L, oxidation temperature of 101.8 °C and time of 48.3 min. The mixed concentrate containing Cu 11.57% and Pb 16.75% was preoxidized under the above conditions, and the flotation separation verification results showed that Cu concentrate with Cu grade of 18.09% and recovery of 95.41%, and Pb concentrate with Pb grade of 44.96% and recovery of 95.94% was obtained respectively. This paper provides a new method of preoxidation combined flotation to achieve high-efficiency separation of copper-lead mixed concentrate.

Słowa kluczowe

EN

copper-lead mixed concentrate; peroxidation; separation of copper and lead; response surface methodology

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2023
• Tom: Vol. 59, iss. 2
• Strony: art. no. 163253
• Opis fizyczny: Bibliogr. 37 poz., rys., tab., wykr.

Twórcy

autor

Peng Zeng

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China

autor

Haiyun Xie

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
• State Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources, Kunming 650093, China

autor

Yanling Jin

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China

autor

Pei Zhang

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China

autor

Jialing Chen

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China

autor

Liu Dianwen

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
• State Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources, Kunming 650093, China

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).