Investigating the selectivity of calcium hypochlorite for flotation separation of chalcopyrite and pyrite pre-adsorbed collector

• Autorzy: Yang Wenhui , Qiu Xianhui , Yan Huashan , Wu Hao , Yang Liu , Lai Ruisen , Qiu Tingsheng

Identyfikatory

DOI

10.37190/ppmp/150703

• Języki publikacji: EN

Abstrakty

EN

Bulk flotation is usually used in the flotation of Cu-Fe sulfide ore, and the subsequent concentrate is difficult to be separated because the minerals have adsorbed the collector. In this paper, flotation tests showed that calcium hypochlorite (Ca(ClO)₂) had a stronger depression effect on pyrite pre-adsorbed sodium butyl xanthate (SBX), while having a negligible depressive effect on chalcopyrite. A copper concentrate with Cu grade of 33.32% and Cu recovery of 94.47% could be obtained from flotation tests of mixed minerals. The depression performance and mechanism of Ca(ClO)₂ were studied by contact angle measurements, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analyses, the results suggested that Ca(ClO)₂ can decomposes SBX on the pyrite surface and oxidizes the mineral surface to form hydrophilic substances, which enhances the hydrophilicity of the pyrite surface. In contrast, Ca(ClO)₂ has little effect on chalcopyrite pre-adsorbed SBX, the possible depression model is discussed.

Słowa kluczowe

EN

pyrite; chalcopyrite; calcium hypochlorite; flotation separation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 4
• Strony: art. no. 150703
• Opis fizyczny: Bibliogr. 24 poz., rys., wykr.

Twórcy

autor

Yang Wenhui

• School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

autor

Qiu Xianhui

• School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
• Jiangxi Province Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

autor

Yan Huashan

• School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
• Jiangxi Province Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

autor

Wu Hao

• School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

autor

Yang Liu

• School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

autor

Lai Ruisen

• School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

autor

Qiu Tingsheng

• School of Resource and Environment Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
• Jiangxi Province Key Laboratory of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

Bibliografia

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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).