— For fluorite-quartz or fluorite-sulfides type mineral deposits, the flotation separation of fluorite from associated minerals is relatively easily achieved by using fatty …
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— 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 …
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— 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 and sodium oleate as collector were …
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— 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
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— 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 …
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— 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 ...
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— 1. Quartz-Fluorite Ore Flotation Method. Quartz-fluorite type ore is mainly composed of fluorite (up to 85%) and quartz, with only a small amount of calcite, barite and sulfide. The key to its ...
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— 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 simultaneously. ... (CA) could depress the flotation of Ca 2+-activated quartz with …
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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 …
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— This is an essay in the field of mineral processing engineering. In China, fluorite mainly exists in the form of concomitant deposits. In the flotation process, other useful minerals are usually preferentially floated, and a large amount of fluorite exists in tailings. In this paper, the restrained fluorite and calcite in the floating tungsten tailings …
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— 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.
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— The effects of ultrasonic waves on the flotation of calcite, barite and quartz have been investigated in the case of single and mixed minerals.
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— 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 ...
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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:
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— The high purity of calcite and fluorite was derived from the Lianyungang and Sijiazhuang cities of China. The results of X-ray diffraction (XRD) (see Fig. 1) ensured that the purification of samples could satisfy the demand of experiments.The chemical composition analysis conducted by X-ray fluorescence showed that the fluorite sample …
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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 …
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— 2.2. Micro-flotation test. An advanced Hallimond tube was chosen in the micro-flotation experiments, and 2 g minerals (bastnaesite, calcite, quartz, bastnaesite-calcite or bastnaesite-quartz mixture with a mass ratio of 1:1) with the particle size distribution from 38 to 74 μm were used in each test following the reported procedure …
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— 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 ...
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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.
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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, …
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— The surface precipitation of calcium silicate or phosphate on fluorite and calcite was identified as a major depression mechanism. Selective depressing …
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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 properties of both calcium minerals to the …
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— 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), …
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— According to the different associated minerals, fluorite deposits in the world can be mainly assorted into four types: quartz-type, calcite-type, barite-type and polymetallic symbiosis-type [].It is worth mentioning that with the continuous decrease of high-quality fluorite resources, low-grade fluorite resources with complex gangue minerals have also …
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— Separating fluorite from quartz and calcite by forth flotation can be both in weak-acidized (pH 6.0) condition and weak alkali(pH 9.0) condition.
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— The flotation of sulphides and quartz from calcite is possible while using an amine collector at neutral or mildly alkaline pH values where the amines are present in mono and doubly charged ions. Optimum …
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— 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 ...
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— A yeast, Saccharomyces cerevisiae, was effectively used for the separation of quartz from calcite through microbially induced flotation and selective flocculation. Yeast …
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— The results of single mineral flotation tests indicated that DHH exhibited a stronger collecting ability to malachite and better selectivity against quartz and calcite than OHA, and floated out 94 % malachite, 8.5 % quartz and 17 % calcite at pH = 10 with a collector concentration of 60 mg/L.
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— 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 ...
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