fluorite flotation interfaces

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  • Is Oleic Acid Or Oleoyl Sarcosine more Selective in the ...

    Oleic acid has been almost invariably used in the flotation of siliceous fluorite ores. The performance of oleic acid, however, deteriotates with carbonaceous fluorite ores. Oleoyl sarcosine developed recently has been found to produce results superior over oleic acid with ores containing high calcite contents. While the mechanism of oleate adsorption is usually considered as chemisorption ...

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  • Minerals | Special Issue : Flotation Chemistry

    The removal of fine quartz in fluorite concentrate is the main problem in fluorite flotation. In this study, the flotation tests on fluorite, quartz and a weight equivalent mixture (all less than 10 μm) using water glass (with different modulus) as depressants and sodium oleate as collector were conducted.

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  • On the interactions at interfaces in fluorite flotation ...

    On the interactions at interfaces in fluorite flotation. Int. J. Miner. Process., 23: 229240. Data on the flotation recovery, surface pressure and zeta potential at different surfactant con centrations and at pH and are presented for the nalkylammonium chloride/fluorite sys tem.

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  • Kinetics of 18Carbon Carboxylate Adsorption at the ...

    In this study the kinetics of oleate and linoleate adsorption at the fluorite surface have been examined, insitu, by Fourier transform infrared internal reflection spectroscopy. Data obtained in this study show that the adsorption process is not controlled by convective diffusion. Other results from this study indicate that oleate adsorbs to approximately the same monolayer coverage level ...

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  • Implication and collecting mechanism of emulsified sodium ...

    interface, increasing the hydrophobic character of the mineral surface (Filippova et al., 2014; Wang et al., 2015). Despite many advantageous, the vegetable oils have not been used as the fluorite collector in literature, so its application in fluorite flotation need to be tested and optimized, and its collecting

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  • Column Flotation and Bubble Generation

    As part of its research program on column flotation, we performed studies on (1) column flotation amenability and comparison with conventional flotation results for over 15 mineral systems, (2) alternative methods for improving column bubble generation systems, (3) mineral behavior within a column, and (4) the effect of changes in column operating parameters on flotation grade and recovery.

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  • NATURAL HYDROPHOBICITY AND FLOTATION OF FLUORITE

    Natural hydrophobicity and flotation of fluorite 7 Hydrophobicity of fluorite can be demonstrated by putting a drop of water on a polished fluorite surface. This creates nonzero contact angle ...

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  • Effect of phytic acid on the surface properties of ...

    Jul 20, 2019· In this study, the flotation behaviors of PA and the behaviour of NaOl at the CaWO 4 /water interface and CaF 2 /water interfaces and PA’s effect on flotation performance are examined. The aim of this work is to determine the effect of PA on the interaction of scheelite with fluorite.

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  • The Improvement Effect of Dispersant in Fluorite Flotation ...

    The types and dosage of dispersant on the improvement of fluorite flotation were investigated; when the sodium polyacrylate (SPA) was used as the dispersant and its addition is %, the concentrate grade of CaF2 increased from 90% to 98% and the fluorite recovery increased from 81% to 85%.

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  • Specific Ion Effects of Salt Solutions at the CaF2/Water ...

    Calcium fluoride is a slightly soluble compound commonly extracted from ores via flotation at elevated pH, where surfactant molecules bind with hydroxylated surface sites. The addition of F−(aq) suppresses surfactant adsorption by replacing these sites. In this paper, we look at the effects of aqueous Cl−, Br−, F−, and SO42− on the water structure at the CaF2/H2O interface at a pH ...

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  • Mechanisms of nonsulfide mineral flotation with oleinic ...

    Request PDF on ResearchGate | Mechanisms of nonsulfide mineral flotation with oleinic acid | By the analysis of oleinic acid flotation of fluorite and hematite, it is inconsistent to use ...

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  • Flotation of fluorite from ores by using acidized water ...

    The flotation of fluorite from ores by using acidized water glass (AWG)as depressant has been studied for the substitution of the commonly used depressant (soda ash plus sodium lignosulfonate).

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  • Fluorite Flotation Process,Fluorite Flotation Separation,

    Fluorite flotation process is applied for refractory fluorite with complicated properties such as high mud content, impurity containing, fine particle distribution etc. Our fluorite flotation process has many advantages including automatic controlling, high efficiency, safety, fast and low energy consumption. Process Description

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  • An SFG spectroscopy study of the interfacial water ...

    In fluorite flotation, the aim is to remove the silicate minerals by using depressants. Commonly used depressants include water glass (sodium silicate), phosphate, and starch (Schubert et al., 1990, Zhou et al., 2013). Of these common depressants, the water glass is often preferred due to its low cost and consistent performance.

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  • Influence of Pulp pH on Flotation of Fluorite and Calcite ...

    The mechanism of influence of pulp pH on flotation of fluorite and calcite was investigated by such parameters as fluorite recovery, zeta potentials and the infrared spectroscopy about minerals at ...

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  • (PDF) Natural hydrophobicity and flotation of fluorite

    Natural hydrophobicity and flotation of fluorite ... and therefore flotation of fluorite depend on its origin, color and pH. ... and Xray scanning at an air–liquid interface to determine the ...

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  • The effect of polyacrylic acid on the surface properties ...

    for fluorite flotation. In this study, the flotation behavior of polyacrylic acid (PAA) at the CaF 2 /NaOl and CaCO 3 /NaOl interfaces and its effect on flotation performance were investigated. The aim of the present work was to reveal the effect of PAA on the interaction of fluorite with calcite. Microflotation tests, zetapotential

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  • The Role of Water Glass in the Flotation Separation of ...

    Fluorite is the principal mineral of fluorine and usually coexists with quartz in deposits. The removal of fine quartz in fluorite concentrate is the main problem in fluorite flotation. In this study, the flotation tests on fluorite, quartz and a weight equivalent mixture (all less than 10 μm) using water glass (with different modulus) as depressants and sodium oleate as collector were conducted.

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  • Surface activity and fluorite flotation with myristic acid ...

    Surface activity and fluorite flotation with myristic acid derivatives containing oxygen and sulphur atoms Jorg Begera, Claudia Schmidt', Jan Szymanowski", Rakan Barhoumb aFreiberg Mining Academy, Institute of Organic Chemistry, Leipziger str., Freiberg, Germany bPoznah Technical University, Institute of Chemical Technology and Engineering, Pl ...

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  • Charge Reversal Behavior at the CaF2/H2O/SDS Interface as ...

    Mar 28, 2003· We report in situ spectroscopic measurements of charge reversal behavior and surfactant bilayer formation at the salt/aqueous solution interface as the aqueous surfactant concentration is varied. The studies, which employ vibrational sum frequency spectroscopy to measure the vibrational response of sodium dodecyl sulfate and water at the CaF2/H2O interface, demonstrate the complex nature of ...

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  • Minerals Engineering Conferences Flotation '17

    Virtual Special Issue of Minerals Engineering. Selected papers have been published over the last few months in various issues of Minerals papers are now grouped together on ScienceDirect as a "Virtual" Special Issue (VSI) and can be viewed and downloaded at ScienceDirect.

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  • In Situ Vibrational Spectroscopic Studies of the CaF2/H2O ...

    In these first vibrational sum frequency spectroscopy studies of the CaF2/H2O interface conducted under varied aqueous phase composition, large changes in the water structure and surface composition have been found. As the pH of the aqueous phase is adjusted from acidic to basic, dramatic changes in the orientation and hydrogen bonding structure of the water molecules are observed, in addition ...

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  • Modeling the Competitive Adsorption of Water and Methanoic ...

    Atomistic simulation techniques were used to investigate the interaction between the minerals calcite and fluorite with water and methanoic acid. The relative adsorption energies suggest that methanoic acid preferentially adsorbs onto fluorite surfaces, while adsorption of water is energetically preferred over methanoic acid on the calcite cleavage plane in agreement with experiment.

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  • Reverse Flotation Separation of Fluorite from Calcite: A ...

    Fluorite (CaF2), as an important strategic mineral source, is usually separated from calcite by the common froth flotation method, but this separation is still not selective enough. The development of a selective collector and/or depressant is the key to achieving high selective separation. 1Hydroxyethylidene1,1diphosphonic acid (HEDP or H4L) is widely used as an environmentally friendly ...

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  • Improvement Effect of FeSO4·7H2O on Flotation Separation ...

    Improvement Effect of FeSO4·7H2O on Flotation Separation of Scheelite from Fluorite Yuan Hu,† Yuqing Huang,‡ Rongdong Deng,*,‡,§ Lin Ma,‡ and Wanzhong Yin‡,§ †College of Chemical Engineering and ‡School of Zijin Mining, Fuzhou University, Fuzhou 350108, China §Fuzhou UniversityZijin Mining Group Joint Research Center for Comprehensive Utilization of Mineral Resources, Fuzhou

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  • Flotation Separation of Scheelite from Fluorite Using ...

    The flotation recovery of scheelite and fluorite keeps at about 75% and 10%, respectively, at the pulp pH ~ and PANa concentration from 30 to 50 mg/L. IR spectra results suggest that PANa has a chemical effect on the surface of scheelite and fluorite.

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  • Beneficiation of fluorite by flotation in a new chemical ...

    Beneficiation of fluorite by flotation in a new chemical scheme. ... surface tension measurements at the air/brine interface and vibrational spectroscopy (FTIR) techniques have been used for the ...

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