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Another group of frothers showing collecting activity are sulfates having a long alkyl chain such as sodium dodecyl sulfate and sodium petroleum sulfonate. They find their application in the flotation of fluorite or barite and zinc, respectively (Chen et al., 2018, Harvey et al., 2005, Hoseinian et al., 2018). Long-alkyl chain fatty acids and ...
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Fluorite (CaF 2) is by far the most important fluorine-bearing mineral phase in the Earth's crust.It is mostly used for manufacturing glass, cement, fillers, and hydrofluoric acid, and as a flux in steel-making in various industries [1,2,3].In order to obtain high grade fluorite raw materials (CaF 2 ≥ 97%), froth flotation has been the most …
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The present review sheds new light on the deep understanding of fluorite flotation, the future synthesis of reagents as well as their schemes in practical use. Meanwhile, such a novel rain of ...
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For fluorite, the results show that CA effectively depressed fluorite flotation after lead ion pretreatment in the pH range of 6 to 10. However, this depression was reduced in the strongly alkaline environment when pH = 11. ... The results of the solution chemical calculations and XPS analysis show that the phases produced by lead ions on …
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Molecular orientation of rhamnolipid (hydrophilic rhamnosyl groups exposed to water phase and fatty acids chains facing the gas phase) resulted in increased …
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Innovations and combinations of various additives comprise a significant share of the advanced investigations in fluorite flotation [22], [23], [24]. In some situations, effective flotation could be realized with only one kind of additive. ... After the continuous and dispersed phases were mixed in the micro-contactor, a small column with a ...
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The article presents experimental research into intensification of fine-disseminated carbonate-fluorite ore flotation by adding FLOTOL-7,9 agent. It is shown that the optimal agent modes allow the yield of the saleable fluorite product of above 90% CaF2 grade at higher than 60% fluorite extraction.
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Calcite is a semi-soluble mineral that can be considered one of the main problematic gangue phases for several different types of valuable sulfides and oxides. ... Study on various aspects of fluorite flotation was the subject of many researches. Assessment of the adsorption mechanism of fatty acid collectors (Rao and Forssberg, …
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It has been well appreciated that the froth flotation is of the most importance. However, to the best of the authors' knowledge, it lacks a thorough and critical review on the recent developments in fluorite flotation. This article begins with introducing the deposits and unique physical and chemical properties of fluorite from the perspective ...
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It has been found that the dispersion processing with CMC as dispersant could effectively improve the fluorite flotation, increased the fluorite recovery from 72% to 78.5% at the same concentrate ...
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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 0.5%, the ...
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Seasonal fluctuations in water, gas, and froth phases. Interactions between equipment, water, and ore in different seasons. Flotation reagents and their competition under …
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Finally, the most widely seen fluorite-flotation cases, including separation of fluorite from quartz, calcite, barite, and sulfide, are summarized individually. The present review …
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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 …
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This investigation aims to demonstrate the effects of hydrophobic tails on the affinity and relevant flotation response of sulfonate-based collectors for fluorite. For this purpose, a series of alkyl sulfonates with different hydrophobic tails, namely sodium decanesulfonate (C10), sodium dodecylsulfate (C12), sodium hexadecanesulfonate (C16), and sodium …
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In this study, two new collectors for fluorite flotation DP-OMC-1033 (DP-I) and DP-OMC-1234 (DP-II) were tested and compared with oleic acid (OA), sodium oleate (SO) and potassium oleate (PO). According to fluorite grade and fluorite metallurgical recovery, the effect of each collector was determined, both in mechanical and pneumatic …
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The XRD patterns of magnetic separation concentrate show that the main mineral phases in concentrate are magnetite (Fe 3 O 4) and fluorite (CaF 2), which can be removed by grinding and reverse flotation fluorite to obtain a high-grade iron concentrate. The REO grade of magnetic separation tailings is 11.98 %, and its recovery rate is 97.96 …
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Through the flotation process of primary roughing, primary sweeping and four-stage selection of fluorite ore, a qualified fluorite concentrate with CaF 2 grade of 95.52% and recovery of 91.20% was ...
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It could be found that GM could strongly depressed the flotation of cassiterite but nearly affected the fluorite flotation, and an excellent separation effect (fluorite recovery of 97.43%, cassiterite recovery of 4.54%) could be obtained at the conditions of pH 8.00, GM dosage of 1.0 mg/L and SPA dosage of 80 mg/L.
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The flotation recovery of fluorite decreased significantly, and the value dropped to approximately 5% at pH ~ 8, indicating that CA can be used as a depressant for fluorite in barite flotation at pH 8–11. Fig. 3 reveals the effects of CA on the flotation of fluorite and barite in the presence of 1.5 × 10 −4 mol/L NaOl. The flotation ...
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In this review, analyses of the fundamental reasons for the difficulties of flotation separation of fluorite from calcite are performed, from the similar surface …
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For the fluorite flotation, it can be seen that within the experimental slurry pH value range, the flotation recovery of fluorite remained at about 7.0%, ... Decoupling the effects of solid and liquid phases in a Pb-water glass mixture on the selective flotation separation of scheelite from calcite. Miner. Eng., 154 (2020) ...
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Fluorite flotation process. The beneficiation of fluorite ore is gravity separation and flotation process. The specificity of fluorite flotation: 1. Because industrial making hydrofluoric acid require calcium fluorite content>98% and silica . 1%, fluorite flotation generally use 57 stages concentration; 2.
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Froth flotation is a physicochemical separation process in which a mixture of fine mineral particles is mixed with water in a large tank (cell), and a swarm of small air …
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To overcome the difficulty of separating bastnaesite from fluorite through the flotation technique, the present study examined the suitability of sodium alginate (SA) as a depressant in the flotation process. The effect of SA on the flotation separation of bastnaesite and fluorite was evaluated using micro-flotation tests, zeta potential …
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DOI: 10.1016/0301-7516(92)90032-R Corpus ID: 96214879; On the role of the ion composition of the aqueous phase in the flotation of fluorite and calcite @article{Morozov1992OnTR, title={On the role of the ion composition of the aqueous phase in the flotation of fluorite and calcite}, author={V. V. Morozov and Henning Baldauf and …
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The most common process for enhancing the quality of fluorite ores is the flotation method. In anionic flotation of fluorite, fatty acids or their soap are used as …
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The molybdenum and fluorite were obtained in different phases with the flotation of fluorite ore containing molybdenum obtained from Karaamağaradere-Keban-Elazığ district in Turkey. It has been found that the original ore contains 1.08 % Mo, 0.05 %Cu, 1.20 % Pb, 1.12 % Zn and 12.0 % F.
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In this study, the cyclonic static microbubble flotation column (FCSMC) was investigated for fluorite beneficiation. The structure and principle of the specially designed column are described. Fluorite samples from the tungsten separation tailings of the Shizhuyuan Mine, Chenzhou, Hunan Province, P.R. China, were tested using a …
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Oleic acid serves as a conventional collector in fluorite flotation. N-hydroxy-9,10-epoxy group-octadecanamide ... and solid phases. 5. Conclusion. Oleic acid is an essential fatty acid collector and is extensively employed in oxide mineral flotations due to its affordability and strong collecting ability. However, its drawbacks, including low ...
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