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fluorite flotation
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Study on flotation separation of barite fluorite by citric acid …
In order to further investigate the effect of citric acid on the flotation behavior of minerals, the fluorite-barite binary mixed ore was prepared in a ratio of 1:1, and the pH value and the amount of citric acid were used for reverse flotation separation of fluorite-barite binary artificial mixed ore. The results are shown in Fig. 3.
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Study on synergistic inhibition and mechanism of flotation …
Flotation is the most efficient method to recover this type of fluorite. Fluorite and calcite contain Ca 2+. During flotation, the physical and chemical properties of the …
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(PDF) Froth flotation of fluorite: A review
Finally, the most widely-seen fluorite-flotation cases, including separations of fluorite from quartz, calcite, barite, and sulfide, are summarized individually. The present review sheds new light ...
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STPP and EDTMPS synergistically enhance the flotation …
1. Introduction. Scheelite (CaWO 4) often coexists with calcium-bearing gangue minerals like fluorite (CaF 2) and calcite (CaCO 3).Due to the similar surface physicochemical properties, it is difficult to separate scheelite from calcium-bearing gangue minerals by flotation efficiently [1], [2], [3].Petrov process (PP) offers a viable solution …
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Temperature and climate-induced fluctuations in froth flotation…
In Chinese fluorite flotation plants, it is common to heat up the pulp to 40°C to improve the flotation performance of oleic acid through the improved dispersing conditions [Citation 43]. Consequently, some fluorite mines in northern China were reported to experience significant energy costs in winter [Citation 189].
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Investigating the Mechanism of Diethylenetriamine …
Fluorite and calcite have been attracting research attention for a long time. This paper reports on an investigation of the use of diethylene triamine pentamethylphosphonic acid (DTPMPA) as a chelating inhibitor. DTPMPA was used as a chelating inhibitor to study the flotation, separation, and adsorption behaviors of …
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Selective flotation separation of fluorite from calcite using …
The flotation separation of fluorite from calcite using mixed collector (NaOL/DDA) and salted water glass was investigated using micro-flotation experiments. The adsorption mechanism of the mixed collector was uncovered by …
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1-Hydroxyethylidene-1,1-diphosphonic acid used as pH
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 …
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Molecules | Free Full-Text | The Role of Fe(III) in Selective
The floatability of fluorite and calcite exhibit similar properties, rendering their flotation separation challenging. Macromolecular polysaccharide reagents containing the polyhydroxyl group have shown broad promising application. The selectivity of polysaccharide is relatively low. In this study, the introduction of Fe3+ was employed to …
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Flotation separation of fluorite from calcite by a new …
In this study, curdlan was used as an efficient and eco-friendly calcite depressant for flotation of fluorite/calcite. Firstly, the structure and molecular weight of curdlan were characterized. Floatation test results showed that the flotation difference between fluorite and calcite was expanded by curdlan, thus enabling the flotation …
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Implication and collecting mechanism of emulsified sodium vegetable
The emulsified sodium vegetable oleate (ESVO) was prepared with low-cost vegetable oleate. Using ESVO as a collector, the flotation performance of fluorite had been investigated comparing with ...
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Overview of Fluorite Resources and Processing Technology …
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. Finally, some suggestions and solutions have been proposed with a view to providing new ideas and strategies for efficient development and …
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Beneficiation of fluorite by flotation in a new chemical …
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. Also, enough sodium carbonate was added to adjust the slurry to a pH of …
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Selective adsorption mechanism of SHMP onto fine fluorite …
The flotation results indicated that when sodium oleate (NaOL) was used as the collector, SHMP was 2.5 × 10 −6 M, showing an outstanding flotation separation of bastnaesite from fine fluorite. The contact angle and zeta potential results showed that SHMP selectively increased the surface hydrophobicity and decreased the surface …
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an effective modifier in fluorite flotation
Flotation tests on fluorite ores with various carbonate content (CaCO 3 contents from 4.43% to 74.40%) were carried out using acidized sodium silicate (A.S.S.) as modifier and oleic acid as collector. A high purity fluorite concentrate (99% CaF 2) was obtained.It was demonstrated that A.S.S. has an activating effect on fluorite and a …
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Flotation selectivity of novel alkyl dicarboxylate reagents for …
When looking at fluorite flotation with fatty acid collectors, the higher collector affinity is thought to be due to better templating effects at the fluorite surface [18]. With fatty acids as reagents for different chloroapatite (and/or fluoroapatite) flotation, the variance in flotation response has been attributed to differences in crystal ...
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Froth flotation of fluorite: A review
This article begins with introducing the deposits and unique physical and chemical properties of fluorite from the perspective of the crystal structure. It is followed by a …
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Influence of starch on floatability in fluorite and barite in α …
1. Introduction. As a non-metallic mineral, fluorite is commonly appeared in industrial processes related to fluorine. It is often found with the emergence of other calcium and silicate minerals such as quartz, barite, and small amounts of pyrite [1,2].The flotation for the separation and purification of fluorite from these associated minerals is based on …
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(PDF) Froth flotation of fluorite: A review
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.
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Rheological investigations on the hetero-coagulation …
The recovery of fluorite at flotation time t, to a first approximation is given by the following expression: (2) R t = R max 1 − e kt where R max is the maximum flotation recovery (%) at infinite time, k is the flotation rate constant (min −1), t is cumulative flotation time (min) and R(t) is the cumulative fluorite recovery (%) at ...
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Effect of an Environment-Friendly Depressant on the Flotation …
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 …
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Flotation Behavior of Different Colored Fluorites Using Sodium …
Fluorite (CaF 2) is by far the most important fluorine-bearing mineral phase in the Earth's crust.It is mostly used for manufacturing glass, cement, fillers, and hydrofluoric acid, and as a flux in steel-making in various industries [1,2,3].In order to obtain high grade fluorite raw materials (CaF 2 ≥ 97%), froth flotation has been the most …
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Temperature and climate-induced fluctuations in froth …
ABSTRACT. This overview identified temperature and precipitation as the main seasonality triggers for changes in flotation performance. Other triggers found in the …
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Fluorite | Crystals, Uses, Properties | Britannica
fluorite, common halide mineral, calcium fluoride (CaF 2), which is the principal fluorine mineral.It is usually quite pure, but as much as 20 percent yttrium or cerium may replace calcium.Fluorite occurs most commonly as a glassy, many-hued vein mineral and is often associated with lead and silver ores; it also occurs in cavities, in …
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Testing of New Collectors for Concentration of Fluorite by Flotation …
In 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 potassium oleate (PO). According to fluorite grade and fluorite metallurgical recovery, the effect of each collector was determined, both in mechanical and pneumatic …
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Flotation separation of fluorite from calcite using bis …
The pure mineral sample of fluorite and calcite used in this experiment was obtained from Guangzhou, China. After wet sieving, the size fraction between 74 μm and 37 μm was gathered for flotation tests, and part of the sample was further ground to approximately 5 μm for analysis of the adsorption mechanism.
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Mechanism of collector adsorption in fluorite flotation
Whereas a metallurgical-grade fluorite is obtained by gravity and magnetic separation methods, flotation is the major concentration process for the production of acid-grade fluorite. Selective ...
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Intensifying fine-grained fluorite flotation process with a …
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].
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Activation mechanisms of sodium silicate-inhibited fluorite …
During fluorite flotation, it is difficult to separate fluorite from calcite. Because they are both calcium-containing minerals and their surface properties are similar (Zhu et al., 2018). Therefore, many works have focused on the flotation separation of fluorite and calcium-containing gangue, particularly on effective collectors and selective ...
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Surface chemistry of xanthan gum interactions with …
The flotation behavior and surface chemistry by which the XG interacted with the bastnaesite and fluorite were investigated via analyses of micro-flotation tests, adsorption density measurements, zeta potentials, Fourier transform infrared spectra (FTIR), and X-ray photoelectron spectra (XPS).
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Depression behavior and mechanism of sodium silicate on …
Therefore, the flotation of fluorite was selectively depressed by EDTA. The results show that EDTA was a promising depressant for fluorite gangue mineral in bastnäsite flotation.
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Comparison Between Performance of Fluorite Flotation …
It has been shown that carrying out flotation of fluorite at pH higher than 9.5 leads to a greater flotation of carbonates, even when using different types of …
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Understanding the sequential flotation separation of fluorite…
The flotation separation of fluorite, barite and calcite with OEBA collector was performed. Based on the findings and discussion, we could draw the following conclusions. OEBA realized the efficient flotation separation of fluorite and barite from calcite at pH ∼ 9.0, and that of barite from fluorite at pH ∼ 11.0.
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Lower temperature flotation of carbonate-fluorite ores
The authors provide insight into the problem of selective flotation of fluorite from carbonate-fluorite ores. It is found that oxyhydrate collectors used in combination with sodium fluoride provide rather high level of selectivity in fluoride flotation from poor high-carbonate ores and make it possible to eliminate high-temperature pulp treatment with …
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Adsorption and depression mechanism of an eco-friendly …
The fluorite (CaF 2) lump and calcite (CaCO 3) lump used in this study from a fluorite mine in Hunan province and the Ye's mineral specimen group in Guangdong province, China, respectively.After manual crushing, agate grinding and wet screening, the –150 + 37 µm size fractions were used for flotation experiments, FTIR spectroscopy …
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Efficient selective flotation separation of fluorite from …
The combination of Fe 2+ /Fe 3+ sulfate was used as selective depressant for the flotation separation of fluorite and calcite.. Ferrous and ferric species were in-situ generated on calcite surface to hinder the adsorption of NaOL. • Fluorite concentrate with CaF 2 grade of 80.29 % and recovery of 90.79 % was obtained using 1:1 mixed minerals.
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