Activation of quartz flotation by Cu2+, Ni2+ in the sodium ethylxanthogenate (EX) system

• Autorzy: Liu Yang , Tong Xiong , Xie Rui-Qi , Xie Xian , Song Qiang , Fan Pei-Qiang

Identyfikatory

DOI

10.37190/ppmp/166368

• Języki publikacji: EN

Abstrakty

EN

During the flotation of metal sulfide minerals, due to the interference of unavoidable ions, the quartz also partially floats in some cases. The studies on the mechanism of quartz being activated and floating up are still insufficient. In this study, the influence of the Cu²⁺ and Ni²⁺ unavoidable ions on the floatation of quartz was studied by micro-flotation experiments, adsorption detection, zeta potential measurement, solution composition calculation, infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS) analyses, and atomic force microscopy (AFM) observation. This provides a theoretical reference for further understanding the mechanism of sodium ethylxanthogenate and quartz surface, as well as the development of a new quartz depressant. The results of flotation showed that after activation by Cu²⁺ (1×10^-4 mol/dm³) and Ni²⁺ (5×10^-5 mol/dm³), the quartz was captured by sodium ethylxanthogenate (EX: 1.4×10^-4 mol/dm³) under alkaline conditions (pH=10), while the best recoveries were obtained as 80% and 43%, respectively. The results of adsorption and zeta potential measurements showed that the precipitation rate of Cu²⁺ was greater than that of Ni²⁺ under alkaline conditions. Additionally, both Cu²⁺ and Ni²⁺ electrostatically adsorbed on the quartz surface and changed the zeta potential of quartz. The solution composition calculation further showed that Cu(OH)⁺, Cu(OH)_2(s), and Ni(OH)⁺, Ni(OH)_2(s) were the main components in the solution under alkaline conditions. The FT-IR and XPS analyses and AFM observations demonstrated that Cu and Ni species adsorbed on O atoms on the quartz surface, providing active sites for EX adsorption, and EX combines with Cu and Ni species on the quartz surface to generate -O-Cu-EX and -O-Ni-EX complexes. Finally, the quartz floated up due to the formation of hydrophobic products and firm adsorption.

Słowa kluczowe

EN

quartz; flotation; ions activation; sodium ethylxanthogenate; adsorption mechanism

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2023
• Tom: Vol. 59, iss. 2
• Strony: art. no. 166368
• Opis fizyczny: Bibliogr. 42 poz., rys., tab., wykr.

Twórcy

autor

Liu Yang

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

autor

Tong Xiong

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

autor

Xie Rui-Qi

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

autor

Xie Xian

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

autor

Song Qiang

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

autor

Fan Pei-Qiang

• Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, 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).