In the first step of flotation, the fluorite left in the tailing contained 29.6 % of CaF2. After flotation of this tailing, concentrate grade of CaF2 raised to 96 %. 0.5 % of sulfur was found in this concentrate. It was concluded that this concentrate contained fluorite with suitable particle
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The invention provides a kind of carbonate-cost-effective flotation separation method in fluorite ore deposit, be specially adapted to the FLOTATION SEPARATION in the high fluorite ore deposit of carbonate content.Its key is to select the inhibitor-acidified sodium silicate and the dosing measure of effective carbonate mineral, under the common process condition, makes carbonate and fluorite
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Dec 01, 2020 The energy step sizes for survey spectra and high-resolution XPS spectra were 1.00 and 0.05 eV, respectively. All elements were calibrated using C 1s at 284.8 eV. 3. Results and discussion3.1. Micro-flotation results3.1.1. Effect of depressant PSG on the flotation recovery of fluorite and calcite
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May 25, 2020 Flotation tests showed that the best results in terms of fluorite metallurgical recovery were 82.8% and 87.9% for new collectors DP-I and DP-II respectively, for a dosage of 100 g/t and using pneumatic cell. Additionally, in terms of fluorite grade, DP-I showed the best results, achieving 79.7% of CaF2 in roughing step for a dosage of 100 g/t
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The flotation recovery of scheelite and fluorite keeps at about 75% and 10%, respectively, at the pulp pH 9.3~9.6 and PA-Na concentration from 30 to 50 mg/L. IR spectra results suggest that PA-Na has a chemical effect on the surface of scheelite and fluorite. The zeta potential of fluorite becomes more negative than that of scheelite after PA-Na
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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. 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP or H4L) is widely used as an environmentally friendly
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Improving fluorite flotation from ores by dispersion processing. Minerals Engineering, 2006. A. L pez-Valdivieso. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER
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From the bank of flotation cells, the fluorite ore charge is feeded to a normal concentration procedure, retaining an acceptable minimum of particles with arsenical content that according to tests is not greater than 30% of the original arsenic content, which means that the invention procedure is suitable for separating at least 70 percent of
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Oct 13, 2018 Preliminary studies were made on the use of flotation rate differences to effect a separation of scheelite, fluorite and calcite. Using starvation quantities of reagents (at, or slightly above, the incipient sodium oleate collector concentration required for nearly complete flotation) mineral flotation rates were determined as a function of pH
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Desirable fluorite concentrate could be produced by a process of one stage grinding-two step rougher-two stage scavenging and five stage cleaning flotation. The content of CaF2 in concentrate is
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The flotation of fluorite mineral from ores by using acidized water glass as depressant has been studied for substitution of the commonly used depressant. It was found that the acidized water glass could achieve higher selectivity of fluorite minerals against gangue minerals in the fluorite flotation. The experimental results showed that YF
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According to the different optimum flotation separation range between the fluorite and the gangue, original step inhibition process, improved the grade of fluorite concentrate; The development of new stripping technology can improve the surface properties of fluorite, enhance its floatability and improve the recovery rate
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After an initial flotation step to remove gangue minerals from REE-bearing minerals, magnetic separation was applied to the flotation concentrate to pre-concentrate the fluorite into the non
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Apr 24, 2019 Flotation of the first step: Na2CO3 as the conditioner of PH value, oleic acid as the capture agent, and sodium silicate as the inhibitor. Flotation of the second step has two ways: 1 Inhibiting barite and floating fluorite: inhibitors have lignin sulfonate, sodium silicate, NAF, dextrin, aluminum salt, ferric salts; captor has oleic acid
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Apr 01, 2021 The next stage, i.e., the flotation of the mixed concentrates, has two options: a) regular flotation, where the fluorite is floated using fatty acid as the collector, while barite is depressed by dextrin, tannin or malysite; b) reverse flotation, where hydroxy sulfate ester is used as the collector to float the barite, while the target mineral, fluorite, remains in the tailing [172,173]
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Only jig can deal with the coarse fluorite ore. Fluorite flotation equipment includes crusher, ball mill, flotation machine etc. Jaw crusher is the primary crusher. It is used in fluorite coarse crushing process. Cone crusher is the fine crushing machine used in fluorite processing plant. After fluorite crushing process, fluorite is less than 15mm
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Jul 01, 2003 The fluorite flotation tests were carried according to the flowsheet shown in Fig. 1. The fluorite ore sample was first wet-ground to be 90% minus 200 meshes. Then, the slurry was conditioned, while 1000 g/ton water glass and a given amount of collector were added
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