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 ...

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, …

In this study, to enhance the flotation of fine-grained fluorite, a strategy that combines simultaneous grinding and surface modification via ball-milling and controlled …

Molecular orientation of rhamnolipid (hydrophilic rhamnosyl groups exposed to water phase and fatty acids chains facing the gas phase) resulted in increased …

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 ...

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.

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 …

Bastnaesite ((Ce, La, Pr, Rb)CO 3 F) is an important source of light rare earth elements and is commonly associated with calcium (Ca)-containing minerals such as fluorite (CaF 2), calcite (CaCO 3) and dolomite ((Ca, Mg)(CO 3) 2).Froth flotation is an efficient method to separate bastnaesite and Ca-containing minerals. 2-hydroxy-3 …

Using sodium oleate (NaOL) as a collector, the flotation characteristics of natural colorless fluorite (CF), green fluorite (GF), and purple fluorite (PF) were …

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 ...

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 …

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.

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

The flotation behavior of fluorite and calcite minerals in the absence of PAA is given in Fig. 2. As shown in Fig. 2a, the flotation recovery of fluorite and calcite increased sharply as the initial concentration of NaOl increased from 4 mg/dm 3 to 16 mg/dm . Beyond this concentration, the floatability did not increase notably.

Single mineral flotation tests were conducted in an XFG flotation machine at a spindle speed of 1700 rpm (Wang et al., 2016).The XFG machine configuration has been reported in our previous publication (Gao et al., 2016a).The mineral suspension was prepared by adding 2.0 g of single mineral or mixed binary mineral samples (1 g fluorite …

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 ...

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 …

The recovery scheme consisted of (1) grinding the ore to minus 48 mesh, (2) fluorite rougher and cleaner flotation, (3) desliming the rougher fluorite flotation tailings at 20 µm, (4) mica flotation, and (5) silicate rougher flotation. Acid-grade fluorspar, mica, free silica (SiO2) sand, and low-grade beryl (Be3Al2Si6O18) concentrate were ...

Multiple flotation stages are usually required. The first step is to enrich fluorite and barite through mixed flotation in which sodium oleate and sodium silicate are selected as the collector and ...

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 ...

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 ...

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.

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 …

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 %.

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 …

The flotation behavior of fluorite at a high pH (>12) is distinctly different from that at a conventional flotation pH range of 8-9 [35], and efficient calcite/fluorite separation could be ...

Seasonal fluctuations in water, gas, and froth phases. Interactions between equipment, water, and ore in different seasons. Flotation reagents and their competition under …

In this review, analyses of the fundamental reasons for the difficulties of flotation separation of fluorite from calcite are performed, from the similar surface …

Fluorite flotation tests were carried out with the actual and new schemes. Fig. 2 showed the photographs of the tailing slurries after being settled for 96 h from the flotation test with the actual scheme and being settled for 2 h from the test with the new scheme. With the actual scheme (Fig. 2 a), 96 h of sedimentation did not produce …