— Besides large gap between mono-mineral flotation results of fluorite and calcite, even for 1:1 mixed sample, CaF 2 grade of 80.29 % and CaF 2 recovery of 90.79 % of fluorite concentrate can be achieved with FeSO 4 ·7H 2 O (300 mg/L) and Fe 2 (SO 4) 3 (150 mg/L) used as combined depressant and NaOL (40 mg/L) as collector at pH = 6. In …

 — Finally, the most widely-seen fluorite-flotation cases, including separations of fluorite from quartz, calcite, barite, and sulfide, are summarized individually.

 — The physical and chemical properties of feldspar and quartz are highly similar, thus they cannot be easily separated effectively. In this work, the flotation separation of feldspar from quartz using sodium fluosilicate (Na2SiF6; SF) as a selective depressant was investigated. Moreover, the influence mechanism of SF on the selective flotation …

Yao et al. [23], [24], [25] studied the flotation separation of fluorite, scheelite, and calcite by Pb 2+ and Na 2 SiO 3 as well as Zn 2+ and Na 2 SiO 3. They deduced that the metal silicate products generated by Pb 2+ and Zn 2+ with Na 2 SiO 3 adsorb on the surfaces of calcite and fluorite and delay the adsorption of NaOL. However, scheelite ...

DOI: 10.1016/j.ces.2023.119608 Corpus ID: 265697228; Understanding the sequential flotation separation of fluorite, barite and calcite through the AFM adhesion force @article{Yu2023UnderstandingTS, title={Understanding the sequential flotation separation of fluorite, barite and calcite through the AFM adhesion force}, author={Jiang Yu and …

 — The effective flotation separation of fluorite and calcite is a critical problem in the mineral processing industry owing to their similar physicochemical characteristics. In this study, the effect of glucose (Glu) and Al 3+ on the flotation separation of fluorite and calcite was studied using micro-flotation experiments, scanning electron microscopy (SEM), …

 — Fluorite ore, as an essential raw material in the fluorinated chemical industry, required effective separation and purification. The removal of impurities such as quartz becomes the key point in fluorite flotation.In this work, the fluorite flotation tests via adding the different mass ratios of metal ions (Fe 3+, Cu 2+, Al 3+) and sodium silicate (SS) as …

 — The surface precipitation of calcium silicate or phosphate on fluorite and calcite was identified as a major depression mechanism. Selective depressing …

 — Fig. 2 shows the effects of starch concentration on the flotation of quartz and calcite in the presence of DDA collector. As seen in Fig. 2, the flotation recoveries of calcite and quartz minerals increased along with the increasing DDA concentration at pH 7.5.When the DDA concentration increased to 60 mg/L, the maximum recovery of quartz (around …

 — In reverse flotation, cationic collectors (amines) are preferred, but fatty acids can also be used, especially in systems where barite is present with fluorite, calcite and quartz. In addition to the collectors, barite flotation typically utilizes depressants like citric acid (CA), valonea extract, sodium fluosilicate, dextrin, SHMP, and ...

 — As a common derive of fatty acid, sodium oleate (NaOl) is used in the flotation separation of quartz-fluorite and calcite-fluorite, given its unique advantages like low cost, readily available ...

2. Flotation separation is mainly used to produce high-quality fluorite concentrate. The main problem of fluorite flotation is the separation of gangue minerals such as quartz, calcite and granite. According to the different gangue minerals, fluorite ore beneficiation can be divided into the following four types:

 — The effect of NaOL/DDA with different molar ratios on the recovery of fluorite and calcite was studied, and the results are shown in Fig. 4 (a). As shown in Fig. 4 (a), the flotation recovery of fluorite and calcite has significantly different responses to the change in the composition of the mixed

Finally, the most widely seen fluorite-flotation cases, including separation of fluorite from quartz, calcite, barite, and sulfide, are summarized individually. 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.

 — In this review, analyses of the fundamental reasons for the difficulties of flotation separation of fluorite from calcite are performed, from the similar surface properties of both calcium minerals to the …

 — For fluorite-quartz or fluorite-sulfides type mineral deposits, the flotation separation of fluorite from associated minerals is relatively easily achieved by using fatty …

DOI: 10.1007/s11771-023-5282-z Corpus ID: 258336809; Flotation separation of fluorite from calcite by a new depressant curdlan and its mechanism @article{Han2023FlotationSO, title={Flotation separation of fluorite from calcite by a new depressant curdlan and its mechanism}, author={Wen-jie Han and Yi Min Zhu and Wenxu Ge and Jie Liu and …

 — Depressant TE for the flotation separation of fluorite from calcite was attempted. • TE could selectively depress the calcite flotation using collector NaOl. • Flotation separation of fluorite and calcite could be achieved with the addition of TE. • TE weakly interacted with the fluorite while it was chemically adsorbed on the calcite ...

 — The application of effective collectors in the flotation separation of fluorite and calcite has been widely reported. The comparison of different collectors on the flotation separation of fluorite and calcite is presented in Table 1.In conclusion, the separation of fluorite and calcite can be accomplished through various individual collectors and a …

 — Schubert H, Baldauf H, Kramer W, herr J (1990) Further development of fluorite flotation from ores containing higher calcite contents with oleoylsarcosine as collector. Int J Miner Process …

 — It is known that the flotation separation of fluorite/calcite is extremely difficult because of their similar surface features. In this research, the combination of FeSO 4 ·7H 2 O and Fe 2 (SO 4) 3 (FF) as depressant for possible flotation separation of calcite/fluorite was systematically investigated, with sodium oleate (NaOL) as collector. Besides large …

 — The greatest difference of recovery between fluorite and calcite was achieved at pH 6.0, at which the recovery of fluorite and calcite was 98.79% and 13.73% respectively. Download : Download high-res image (145KB) Download : Download full-size image; Fig. 2. Effect of pH on the recovery of fluorite and calcite.

 — Barite Fluorite Calcite Quartz: Modified: Sodium silicate d: 9: Ren et al. [75] ... [121] demonstrated increased temperatures (up to 61°C) favoured bastnӓsite flotation over calcite and barite, using octylhydroxamic acid (OHA) and potassium octylhydroxamate (POH), respectively. Pradip and Fuerstenau ...

Semantic Scholar extracted view of "The effect of citric acid in the flotation separation of bastnaesite from fluorite and calcite using mixed collectors" by Yanbo Xu et al. Skip to search ... Understanding the depression mechanism of citric acid in sodium oleate flotation of Ca2+-activated quartz: Experimental and DFT study. Yunfan Wang Sultan ...

 — Comparative experiments on the effect of the reagents on the flotation activity of fluorite, calcite, and quartz were carried out in an apparatus for nonfrothing flotation (an improved Hallimond tube). Monomineral fractions of fluorite, calcite, and quartz with a size of –0.125 + 0.02 mm were used.

 — The key technical problems of fluorite separation, such as flotation separation of fluorite and calcite, low temperature flotation reagents, and the influence of ions in pulp, were discussed. ... YUAN Q Z, et al. Experimental study on flotation of a low grade calcite-quartz-fluorite ore[J]. Non-Metallic Mines, 2018, 41: 70-72. Google Scholar ...

Specifically, the synergistic effect of collectors and depressants on the recovery of fluorite is elaborated for the first time. Finally, the most widely seen fluorite-flotation cases, …

 — Semantic Scholar extracted view of "Selective flotation separation of cassiterite and calcite through using cinnamohydroxamic acid as the collector and Pb2+ as the activator" by Siyue Nie et al. ... trihydroxyoctadecanamide as a potential collector for the flotation separation of fluorite and calcite. Zhihao Guo Peng Liu Weidi Zhang ...

 — Compared with calcite, fluorite is insensitive to the concentration of the salted water glass, and the recovery of fluorite remains around 85%. The results show that the flotation separation of fluorite from calcite can be achieved at pH 11. Download: Download high-res image (265KB) Download: Download full-size image; Fig. 5.

 — The roles of calcite slimes on the quartz flotation using corn starch as the depressant and dodecylamine (DDA) as the collector were studied though micro-flotation tests, zeta potential measurements and DLVO theory calculations. ... This study provides guiding significance not only for the beneficiation of hematite but also for the fluorite in ...