This study investigates the role of alkyl ether monoamine-coated nanobubbles (NBs) in assisting the flotation process of quartz across various particle sizes, on a bench scale. …
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An improved method for producing high-purity quartz (Qtz) and potassium feldspar (Kfs) concentrates was developed using various chemical reagents. Froth flotation experiments on a Qtz–Kfs mixture …
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The flotation recoveries of spodumene using the NaOL collector (concentration of 0.6 mM) in the presence and absence of metal cations as a function of pH are shown in Fig. 2. The trend of flotation recovery of spodumene without the addition of metal ions is consistent with the literature report (Meng et al., 2021).
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Minerals Engineering, Vol. 5, Nos 10-12, Pi~. 1287-1294, 1992 0892-6875192 $5.00+0.00 Printed in Great Britain 1992 Pergamon Press Ltd IONIC STRENGTH EFFECTS IN DIAMINE FLOTATION OF QUARTZ AND MAGNETITE J.L. SCOTTand R.W. SMITHI Windsor Minerals Inc., Windsor, Vermont, USA t University of Nevada, Reno, …
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Section snippets Materials and methods. High purity (≥ 99%) hexylamine (C 6 H 15 N) with a density of 760 kg/m 3 (at 20 °C) and molecular mass of 101.19 g/mol was purchased from Merck KGaA, Germany. Aqueous solutions of hexylamine were prepared by using distilled water. The experiments were carried out with high purity quartz (98% …
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The flotation behavior, smelting process, various properties of jamesonite (Pb 4 FeSb 6 S 14) and application of its extraction products were introduced.Jamesonite, as a sulfide mineral with complex composition and structure, is mainly distributed in China. It is usually associated with other sulfides with similar properties. Although the mineral was …
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High-efficiency flotation of quartz under alkalescent conditions remains challenging owing to the leak of an effective activator. In this research, high quartz …
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Flotation separation also presents certain challenges. For example, feldspar has a density ranging from 2.5 to 2.7 g/cm³ and is nearly non-magnetic, typically appearing white or light-colored. Quartz is usually colorless, transparent, milky white, or white, with a density of around 2.65 g/cm³, and is also non-magnetic [41], [54], [55 ...
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Advertisements. The objective of this work is to study the application of natural hydrophobic talc nanoparticle as a new class of solid flotation collector. Quartz was used as the model mineral, and XRF, …
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The above results shown that it is more conducive to the flotation separation of quartz and magnesite under alkaline conditions. Download: Download high-res image (187KB) Download: Download full-size image; Fig. 6. The flotation recovery of magnesite and quartz as a function of slurry pH (a) and P507-N12111 dosage (b).
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1. Introduction. Froth flotation is the selected method for the separation of quartz and feldspar. In the conventional process, feldspar is floated from quartz by using hydrofluoric acid (HF) as activator for the feldspar and a cationic collector (amine) at pH 2–3 (O'Meara, 1939). (1979) reported that HF creates a large difference in the …
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Application of a novel ionic liquid as flotation reagent in the flotation separation of quartz and magnesite has been investigated. The flotation behavior and surface properties of quartz and magnesite flotation with dodecyl trimethyl ammonium-diethylphosphonic acid (N12111-DEPA) as flotation reagent were studied by microbubble flotation …
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Section snippets Materials. Natural malachite samples were obtained from "Lupe" mine in Puebla, Mexico. The samples were hand-sorted to obtain lumps for roughness and contact angle measurements; some lumps were crushed then dried-ground mixed with quartz and montmorillonite to obtain malachite particles for BET (Brunauer …
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Barite is a critical mineral that finds applications in many industries. The mineral is commonly occurred in deposits formed in a variety of geological environments where other semi-soluble minerals such as calcite and fluorite are also present. Because of decreasing ore grade, the mineral processing of barite nowadays becomes increasingly …
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Current research has trouble explaining the selective flotation mechanism realized by metal ions, which hinders the advancement of effective flotation techniques. In this work, the selective activation flotation of cassiterite from quartz with Pb 2+ is taken as an example to illustrate the pivotal roles of surface hydroxyls in selective flotation. . …
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Search ScienceDirect. Article preview. Abstract; Introduction; Section snippets; References (50) Cited by (1) Journal of Molecular Liquids. ... The influence of DDA dosage on the flotation recoveries of quartz and magnesite are shown in Fig. 5. As presented in Fig. 5, with the increased of DDA dosage from 25 mg/L to 200 mg/L, the …
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Similarly, a depressant was found to be required for hematite during quartz flotation using amine collectors to achieve adequate selectivity in the concentration process. When using only etheramine almost of the quartz and 50% of hematite reported to the froth product.
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The obtained flotation, adsorption amount, and XPS test results consistently show that the Pb 2+ can more strongly interplay with cassiterite than quartz resulting in selective flotation of cassiterite from quartz. The electron localization functional results illustrate that the electron localization of oxygen of Si-O bonds is stronger than …
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At present, the primary beneficiation approach of fluorite is flotation [5].In the deposits, fluorite is often associated with gangue minerals such as calcite and quartz, which share similar surface properties with fluorite (i.e. solubility, crystal structure, hydrophobicity, and zeta potential), making the effective separation challenging to achieve [[6], [7], [8]].
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As a cationic collector, dodecylamine (DDA) finds widespread use in the reverse flotation separation of apatite and quartz. N-dodecyl-β-alanine (DDALA) is synthesized from the molecular structure of DDA.Consequently, the focus of this study is to comparatively explore the respective selectivities of DDALA and DDA in the reverse …
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Introduction. In Brazil, reverse cationic flotation has been the most commonly used route for the concentration of itabirite [[1], [2], [3]]. In the process, quartz is recovered in the flotation froth in the presence of etheramine (R O (CH 2) 3 NH 2), and the iron mineral content is usually depressed by corn starch, a mixture composed of amylopectin …
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The pyrite and arsenopyrite mineral samples were obtained from Mexico and Australia, respectively. Although pyrite specimens were of high purity, some further purification was needed. ... In the flotation of quartz with dodecylamine at pH 10, coadsorption of ionic and molecular species can be responsible for the hydrophobicity …
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Flotation was first performed in 1860 (Arbiter, 2000) and is a technology that utilizes the differences in physicochemical properties of various mineral surfaces to achieve specific separation (Wills and Munn, 2005), as depicted in Fig. 1.This process involves hydrophobic particles adhering to air bubbles being transported to the froth layer, …
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Cationic reverse flotation of quartz is the most important technique for the concentration of itabirite iron ores for the production of pellet feed. Mineral processors dealing with this industrial system face two major challenges: (i) coarse quartz particles do not respond well to the action of the amine collectors; (ii) fine iron oxide particles do not …
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We present a new froth flotation mineral-separation device and procedure that allows for very effective quartz enrichment before CN chemistry. Our flotation cell, …
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True flotation recoveries with varying amine/g quartz, where the collector-frother amine may be amine-coated NBs alone or assisted by NBs generated in pure water, were compared with blank tests, in the absence of NBs. The flotation study evaluated size-to-size fractions from fine (−20 µm) to coarse (up to 150 µm) particles and their mixtures.
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Mg 2+ is one of the main inevitable cations derived from the dissolution of Mg bearing minerals in oxide minerals flotation. For example, in the flotation system of collophanite, quartz and Mg containing dolomite are common gangue minerals, and silicon removal by flotation is a necessary process for the beneficiation of collophanite [18], …
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For instance, the collision of particles and bubbles mainly occurs in the impeller area of the flotation machine, and existing literature has studied the flotation …
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1. Introduction. Flotation is a cost-effective and highly adaptable concentration process (Wills and Finch, 2015).In its conventional form, flotation requires a comminution step to break down ore materials into a size range (10–150 µm) within which performance is ideal (Tao, 2005, De F. Gontijo et al., 2007, Jameson et al., 2007, …
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Search ScienceDirect. Journal of Molecular Liquids. Volume 410, 15 September 2024, 125643. Separation of hematite and quartz in a cationic collector flotation system using Pullulan as a greener depressant. ... But flotation results indicated that it is not the case, and the quartz flotation was not depressed, so it could be …
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