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This paper mainly investigates the role of hydroxyl on the desilication of goethite by anionic reverse flotation. Accordingly, micro-flotation experiments suggested that the activation effect of Ca(II) on quartz was obviously better than that of goethite in the high alkaline sodium oleate (OL) system.. Furthermore, the Zeta potential also ...
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Flotation recovery kinetic plots for goethite at low, natural (unadjusted) and high values of Eh. High Eh was achieved by adjustment with hydrogen peroxide. The …
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Arsenic being one of the major pollutants was removed from dilute aqueous solution by Adsorbing colloid flotation (ACF) and adsorption onto natural goethite. Flotation was subsequently applied as an … Expand
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Request PDF | On Nov 1, 2023, Hongliang Zhang and others published Insights into the desilication mechanism of goethite by anionic reverse flotation from hydroxyl role | Find, read and cite all ...
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Download Table | The main physical and chemical properties of goethite from publication: Arsenic Removal by Adsorptive Flotation Methods | Arsenic being one of the major pollutants was removed ...
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2.3 Paragenesis. Typical weathering product, particularly in secondary supergene concentrations of sulphides (oxidation zone, gossan), laterites and limonites but also as a primary mineral in hydrothermal and sedimentary formations. Goethite is a mineral that continues to form on the earth's surface on a daily basis, due to the poor …
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The response of pure goethite and two natural iron ores to flotation with potassium octyl hydroxamate is presented. The ores contained 12.5% and 39.7% iron; concentrates …
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DOI: 10.1016/j.mineng.2023.108331 Corpus ID: 261381279; Insights into the desilication mechanism of goethite by anionic reverse flotation from hydroxyl role @article{Zhang2023InsightsIT, title={Insights into the desilication mechanism of goethite by anionic reverse flotation from hydroxyl role}, author={Hongliang Zhang and …
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The oxy-hydroxide minerals of iron such as goethite occur in various mineral deposits, including bauxite, manganese, and iron ores. Goethite (α-FeO(OH)) phase formation in iron ore takes place during the supergene metasomatic restoration of very fine grain chert along with gangue minerals, which forms ferrihydrite FeO[OH] 3 ·nH …
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Dodecylamine (DDA) and sodium oleate (OL) are commonly used collectors in the reverse flotation and the direct flotation of goethite. However, the flotation mechanisms of DDA and OL on the goethite surface remain unclear. In this study, the first-principles density functional theory calculations wer …
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Goethite (FeOOH) is one of the most common minerals in the natural environment (Hou et al., 2017; Song et al., 2022). With active physical and chemical properties, FeOOH may play a crucial role in the aggregation of PSNPs. However, to the best of our knowledge, the potential heteroaggregation behavior between FeOOH and …
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Basically, the processes based on gravity and magnetic separations and flotation have been used for concentration of low grade iron ores. Today the low grade iron ores are goethitic/lateritic in nature. ... The fragments of low grade (lateritic ore) exhibit ochreous goethite-vitreous goethite texture. Goethite occurs with colloform structure, ...
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SA, the flotation recovery of GTN and GT increased with increasing pH, achieving a maximum recovery of 98.9% for both minerals at pH 8.3 and decreasing beyond that pH, with GTN having a slightly higher recovery than GT, except at pH 8.3. ... Goethite (α-FeOOH) (GT), a potential source of Fe and a mineral found together with bauxite [1], is ...
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Sodium silicate appeared to be most effective to depress associated gangue minerals. Finally, the fundamentals learned were applied to the flotation of monazite ore from Mt. Weld. However, these results showed no selectivity due to the presence of goethite as fine particles and due to a low degree of liberation of monazite in the ore sample.
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Compared with hematite and magnetite, goethite has a much more diverse range of textural forms and occurrences, and its influence on iron ore processing is less understood. Currently, most analysis of the effects of goethite on mine performance considers only the chemistry of the ore and not its textural components. Through improved textural ...
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This paper mainly investigates the role of hydroxyl on the desilication of goethite by anionic reverse flotation. Accordingly, micro-flotation experiments suggested that the activation effect of Ca(II) on quartz was obviously better than that of goethite in the high alkaline sodium oleate (OL) system.. Furthermore, the Zeta potential also confirmed that the …
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Learn how to identify goethite, a common iron ore, with optical microscopy. See photomicrographs, optical parameters, paragenesis and multispectral data of …
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These interactions are intimately related to several processes in mineral technology, such as flotation, wet grinding, dewatering, and leaching. Hematite, goethite, quartz, and kaolinite are the main minerals in iron ore processing circuits. Thus, understanding their differences is fundamental to making lower-grade iron ores …
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Comparative experiments and theoretical analysis of the surface chemistry changes of goethite (GT) and goethite containing Ni (GTN) in the lattice in the presence of salicylhydroxamic acid (SA) were performed. It was revealed that in the presence of 100 g·t−1 of SA, the flotation recovery of GTN and GT increased with increasing pH, …
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The flotation process is considered one of the most important techniques to separate rare earth minerals from associate minerals and is commonly applied to the beneficiation of rare earth ores. It is worth mentioning that this separation method is used to separate minerals by exploiting the differences in their surface wettability [12, 24]. The ...
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Fe phosphate > goethite. (2) Apatite > monazite > Ca. Fe phosphate > goethite = ilmenite > hematite. It was concluded that sodium silicate depressed the flotation of all the iron minerals to a greater extent than the phosphate minerals [38]. Sodium silicate can also depress silicate minerals in monazite flotation [40].
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However, when hydroxamate was used as collector, the XRD results show that more serpentine (peaks at 7.29°), but less quartz (peaks at 3.34°) or siderite (peaks at 2.78° and 1.73°) are present in the flotation concentrate. Furthermore, goethite is observed in both flotation products (peaks at 4.56°).
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Considering the better collectability of amide-amine for quartz flotation and lower adsorption affinity for hematite surface than etheramine, the amide-amine is a promising collector to be used in reversal iron ore flotation. ... goethite, carbonates, different types of amphiboles, and other Fe-bearing silicates. This is associated with ...
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In this study, the first-principles density functional theory calculations were used to reveal the role of the hydration of the goethite surface and its effects on …
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However, the flotation mechanisms of DDA and OL on the goethite surface remain unclear. In this study, the first-principles density functional theory calculations were used to reveal the role of the hydration of the goethite surface and its effects on flotation reagents from a microscopic perspective.
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DOI: 10.1016/j.jece.2023.110006 Corpus ID: 258322385; Effect of goethite (α-FeOOH) nanoparticles on the surface properties and flotation behavior of chalcopyrite @article{Suyantara2023EffectOG, title={Effect of goethite ($alpha$-FeOOH) nanoparticles on the surface properties and flotation behavior of chalcopyrite}, author={Gde Pandhe …
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The flotation separation of scheelite from calcite using sodium humate (SH) as a potential depressant has been studied through micro-flotation experiments, zeta …
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Download scientific diagram | Zeta potential of goethite with respect to pH and arsenic concentration. from publication: Arsenic Removal by Adsorptive Flotation Methods | Arsenic being one of the ...
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Sulfidation of goethite into mackinawite and pyrrhotite is described by Wang et al. (2015); the process is inactive in the CH 4 atmosphere but is triggered by the addition of CO 2. …
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Precipitation of goethite on magnetic nanoparticles (MNPs) has been proposed as an effective means to separate goethite from calcium sulfate in the iron removal process of zinc hydrometallurgy, which allows reuse of the hazardous residues. ... The mineral flotation adsorption equilibrium model is a mathematical model to …
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