For fluorite ores, fatty acid and sodium silicate are frequently used as a collector and depressant, respectively [19], [20], [21]. 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 ...
DetailsThe industrial tests were performed at Hunan Xinyuan Corporation's Fluorite Flotation Plant. In these tests, mud was removed early in the process by fluorite desliming rougher flotation. The old system used sodium silicate as a depressant during flotation. The flotation flowsheet of the industrial tests is described in Fig. 7. The new …
DetailsFluorite is an important industrial mineral composed of calcium and fluorine (CaF2). This mineral is widely distributed through different deposits. However, in most cases, fluorite is tightly associated with gangue, such as calcite and quartz. In this paper, different depressants are tested in the flotation of fluorite in two different laboratory …
DetailsCu 2+ was found to have intensive and selective depressing effects on fluorite in the flotation separation of cassiterite from fluorite using 2-carboxyethylphenylphosphinic acid (CEPPA) as a collector at pH 4.0. The depressing mechanism was investigated by flotation tests, zeta potential measurements, X-ray …
DetailsSeparating fluorite and calcite through flotation is difficult due to their similar Ca²⁺ sites on the adsorption surface of collectors. Psyllium seed gum, a reagent naturally derived from ...
DetailsTo overcome the difficulty of separating bastnaesite from fluorite through the flotation technique, the present study examined the suitability of sodium alginate (SA) as a …
DetailsThe results of flotation experiments show that the reverse flotation separation of fluorite from calcite at pH 6.0 can be well achieved with the reagent scheme of 3 × 10 −5 mol/L HEDP and 6 × 10 −5 mol/L NaOL. Moreover, by adjusting the pH to 8.0, the fluorite flotation depressed at pH 6.0. Declaration of Competing Interest
DetailsThe surface characteristics of fluorite and calcite exhibit a close analogy, posing a formidable challenge to flotation separation. Hence, the development of a highly efficient reagent for fluorite holds paramount significance and value in addressing the challenging separation of fluorite and calcium-bearing minerals.
DetailsMicro-flotation experiment results revealed that TSG has great influence on the floatability of calcite at pH range of 6-11, the flotation recovery of calcite was only 6.61% at pH 9.0, while the ...
DetailsThe exposure of the (1 1 0) surface of fluorite limited its flotation response to NaOL collectors, as this surface exhibited a lower affinity for NaOL, agreeing well with the results of the ...
DetailsDepressants in fluorite flotation, which are used for decreasing the floatability of calcite and silica, mainly include some inorganic salts. Sodium silicate commonly known as water …
Details2.2. Flotation Tests Flotation was performed in a 150 mL mechanical flotation cell at 1400 rpm with an airflow rate of 0.125 L/min. Fluorite or calcite single mineral (5 g) was combined with 120 mL DI water and mixed for 1 min. NaOH solution was then added to adjust pH 9.0, at which fluorite and calcite may be floated with sodium …
DetailsIt 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.
DetailsThe surface precipitation of calcium silicate or phosphate on fluorite and calcite was identified as a major depression mechanism. Selective depressing conditions for …
DetailsIntroduction. Fluorite is an important strategic resource with the formula of CaF 2 which has been used in the field of fluorine chemical industry, optical lens, cosolvent in the smelting process as well as ceramics due to its special physicochemical properties [1], [2], [3]. With the rapid depletion of high-quality fluorite ores, the exploitation of low …
DetailsDOI: 10.1016/J.MINENG.2019.106053 Corpus ID: 108593691; Replacing Petrov's process with atmospheric flotation using Pb-BHA complexes for separating scheelite from fluorite @article{Han2019ReplacingPP, title={Replacing Petrov's process with atmospheric flotation using Pb-BHA complexes for separating scheelite from fluorite}, author={Hai …
DetailsThe depressing properties of sodium polyacrylate (PA-Na) for scheelite and fluorite were studied by micro-flotation tests, infrared spectroscopy (IR), zeta potentials, X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT). The flotation results reveal that the selective depression effect of PA-Na is better than that of sodium …
DetailsIn 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 …
DetailsThe 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.
DetailsFroth flotation is the most important technology applied around the world to separate fine mineral particles in aqueous suspension. Froth flotation is fundamentally based on …
DetailsThe flotation results showed that the recovery of fluorite decreased by 89.71% when 4 mg/L PESA was added to the flotation system, while the bastnaesite recovery only exhibited a slight reduction ...
DetailsFlotation results showed that sodium alginate could selectively depress the flotation of calcite and fluorite in pH range of 7–12 when it was added before sodium oleate. ... Liu et al., 2016). Phosphates, such as sodium phosphate (Na 3 PO 4), sodium pyrophosphate (Na 4 P 2 O 7) and ... The mechanism of sodium silicate depressing …
DetailsAs an important strategic non-metallic mineral resource, fluorite has been widely used in various industrial fields, such as metallurgy, optics and semiconductor manufacturing, as well as fluorine-related chemical engineering. Since the major gangue minerals of fluorite ore are silicate and carbonate ones, flotation is the main …
DetailsMicro-flotation tests of the two minerals were studied to show the depressing effect of sulfonated lignite on fluorite and calcite. The mechanism of sulfonated lignite was investigated by Fourier transform infrared spectroscopy (FTIR) measurement, contact angle measurement and X-ray photoelectron spectroscopy (XPS) measurement.
DetailsBastnaesite is a chief natural source of light rare earth elements (LREEs). The effective depression of Ca-containing minerals such as fluorite and calcite in bastnaesite flotation system is normally difficult, and it is imperative to exploit more environmentally-friendly depressants which can inhibit these gangue minerals …
DetailsFlotation behavior of phosphate Effect of depressants. Figure 2 shows the flotation recovery of phosphate with potassium oleate and 10 −3 M KH 2 PO 4 or 8 × 10 −4 M K 2 C 2 O 4 using H 2 SO 4 for pH adjustment in acid media. In presence of H 2 SO 4 and absence of any depressants, the phosphate mineral floats completely starting from …
DetailsAlternative processes have been proposed for selective separation of fluorite and gangue minerals (carbonates and silicates) present in fluorspar ores. Calcination and gravity separation processes are methods that have low efficiency and high cost. Flotation is a chemical process that becomes important when high ore grades are required; however, …
DetailsIn this study, the pyrolysis liquid of pine (PLP) was used as a novel depressant to separate fluorite from calcite. Flotation experiments revealed that the PLP can depress …
DetailsFloatation test results showed that the flotation difference between fluorite and calcite was expanded by curdlan, thus enabling the flotation separation of fluorite/calcite. The …
DetailsThe depressing properties of sodium polyacrylate (PA-Na) for scheelite and fluorite were studied by micro-flotation tests, infrared spectroscopy (IR), zeta potentials, X-ray photoelectron ...
DetailsThe floatability of fluorite and calcite as a function of NaOl dosage at pH 8.0 is shown in Fig. 4.As seen in Fig. 4, flotation recoveries of fluorite and calcite significantly increased with increasing dosage of NaOl and remained constant at high collector concentration.The flotation recovery of both fluorite and calcite was over 90 % using …
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