Dispersion of sodium phytate on muscovite and the implications for arsenopyrite flotation

• Autorzy: Zou Dan , Wang Zhen , Zhao Kaile , Xu Ying

Identyfikatory

DOI

10.37190/ppmp/154951

• Języki publikacji: EN

Abstrakty

EN

The effective flotation separation of sulfides and sliming silicate minerals is always a difficult problem. In this paper, the selective flotation of arsenopyrite from muscovite was studied by using sodium phytate (SP) as dispersant, and the mechanism was investigated through SEM/EDS, zeta potential, FTIR and XPS measurements. Single mineral flotation results showed that with the increasing isoamyl xanthate (IAX) dosage the recovery of arsenopyrite increased, until 8×10⁻⁵ mol/L IAX (79.40% recovery, pH=7), after that it decreased slightly. While muscovite floated poorly at any IAX concentration. For the mixed minerals, arsenopyrite recovery was only 54.63% while that of muscovite was 42.70%, which was attributed to the coverage of muscovite on arsenopyrite surface. When 6×10⁻⁵ mol/L SP was added into the mixed minerals system, the recovery of arsenopyrite recovered to 68.26% while that of muscovite was 8.48% (approximate the value of the single mineral). SEM/EDS results showed that SP could disperse muscovite and prevented its coverage on arsenopyrite surface. Zeta potential results showed that the electrokinetic potential of muscovite and arsenopyrite decrease from -26.60mV to -39.01 mV and from -26.90 mV to -27.84 mV at pH=7, respectively. It was obvious that the negatively charged phytate ions selectively adsorbed on the surface of muscovite. FTIR and XPS resulted co-proved the chemisorption of SP with active sites on muscovite while arsenopyrite spectrum did not change significantly, which was consistent with flotation and zeta potential results. The selective adsorption of SP on muscovite compared to arsenopyrite was responsible for the effective separation of them.

Słowa kluczowe

EN

cassiterite; chlorite; sodium oleate; carboxymethyl cellulose; selective inhibition

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2022
• Tom: Vol. 58, iss. 6
• Strony: art. no. 154951
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Zou Dan

• School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China

autor

Wang Zhen

• School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, China

autor

Zhao Kaile

• Institute of Multipurpose Utilization of Mineral Resources, Chinese Academy of Geological Sciences, Chengdu

autor

Xu Ying

• School of Environment and Resource, Southwest University of Science and Technology, Mianyang 621010, 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).