Improved flotation of auriferous arsenopyrite by using a novel mixed collector in weakly alkaline pulp

Wang, Xiaohui; Zhao, Kongshuang; Hui, Bo; Yan, Wu; Wang, Zhen; Gu, Guohua; Gao, Zhiyong

doi:10.37190/ppmp/127883

Cited by 6 publications

(4 citation statements)

References 16 publications

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“…6(c), for the flotation concentrate of the mixed arsenopyrite/muscovite minerals without SP, the arsenopyrite particles were coated with numerous muscovite fines, and the muscovite fines and arsenopyrite fines were agglomerated. In the mixed flotation process, the slime coating or coagulation between muscovite and arsenopyrite which prevents the flotation of arsenopyrite particles, and results in the inclusion of muscovite into the concentrate (Wang et al, 2020). As shown in Fig.…”

Section: Sem and Eds Resultsmentioning

confidence: 99%

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

Zhang¹,

Wang²,

Zhao³

et al. 2022

Physicochem. Probl. Miner. Process.

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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.

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Section: Sem and Eds Resultsmentioning

confidence: 99%

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

Zhang¹,

Wang²,

Zhao³

et al. 2022

Physicochem. Probl. Miner. Process.

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“…The energies were negative for all four collector states, indicating that YAO adsorption on the mineral surface is possible in all its states. They concluded that a good spodumene recovery could be achieved while remaining selective due to the preferential adsorption of the collector in its four states on spodumene over the rest of the minerals [ 21 ].…”

Section: Relevant Sectionsmentioning

confidence: 99%

“…Different authors mixed anionic collectors with cationic collectors to evaluate their selective capacity. They also investigated the adsorption mechanisms of these collectors with zeta potential measurements, analysis of Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS), finding good separation results; however, these require further studies before being taken to an industrial level [ 21 , 22 , 23 , 24 , 25 ]. By contrast, other authors have synthesized new collectors, obtaining good flotation results, but it remains unclear what the adsorption mechanism is on the surface of the mineral [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Molecular Design and Spodumene Flotation—A Review

Retamal,

Robles,

Quezada

et al. 2024

IJMS

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Spodumene flotation stands as the most commonly used method to concentrate lithium minerals. However, it faces significant challenges related to low collector recoveries and similarity in the surface characteristics of the minerals, which make the effective separation of this valuable mineral difficult. For this reason, numerous researchers have conducted studies to address and confront this problem. In this work, an exhaustive bibliographic search was carried out using keywords and search queries, and the results were structured in three sections according to temporal, methodological, and thematic criteria. The first section covers the period from 1950 to 2004, focusing on experimental tests. The second section covers from 2004 to the present and focuses on flotation tests and measurement analysis. Simultaneously, the third section spans from 2011 to the present and is based on molecular dynamics simulations. Topics covered include spodumene surface properties, the influence of metal ions, pre-treatment techniques, and the use of collectors. Ultimately, molecular dynamics simulations are positioned as a tool that accurately represents experimental phenomena. In this context, specialized software such as Materials Studio or Gromacs prove to be reliable instruments that allow a detailed study of mineral surfaces and other elements to be carried out, which justifies their consideration for future research in this scientific field.

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“…Yu, Wang (8) reported that oleic acid is a widely used anionic collector in the flotation of spodumene. The maximum flotation recovery and adsorption amount of collector was obtained under slightly alkaline pH conditions.…”

Section: Enrichment Ratiomentioning

confidence: 99%

Pre-feasibility study of improving quality of low-grade fluorite. A case study at Phanomthuan deposit, Kanchanaburi, Thailand

Souvannavong

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In this study was presented the pre-feasibility study of improving quality of low-grade�fluorite�from Phanomthuan deposit, Kanchanaburi province, Thailand. The purpose of this study aims to explore the optimal condition in order to remove the impurities which contained high SiO2, CaCO3 and other minerals, also evaluate the project in term of economic. Therefore, the�improvement quality of fluorite by using froth flotation techniques was reach�the ceramic grade. The raw material characterization contains CaF2 = 29.4 Wt.%, SiO2 = 43.9 Wt.% and CaCO3 = 6.9 Wt.%. After flotation process the optimal condition result which contains CaF2 = 96.46 Wt.%, SiO2 = 2.1 Wt.%, and CaCO3 = 0.7 Wt. %. Moreover, the financial analysis indicated that this project possibly to invest due to the Discount cashflow result were�NPV = 377,575,304 baht, Discount rate = 10%, MIRR = 35% and Discount payback period 2 Years.

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Improved flotation of auriferous arsenopyrite by using a novel mixed collector in weakly alkaline pulp

Cited by 6 publications

References 16 publications

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

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

Molecular Design and Spodumene Flotation—A Review

Pre-feasibility study of improving quality of low-grade fluorite. A case study at Phanomthuan deposit, Kanchanaburi, Thailand

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