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As 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 …
Given the gradual increase in the chlorite content of hematite ores, pulp properties seriously deteriorate during flotation. The traditional anion reverse flotation of hematite cannot effectively eliminate the effects of chlorite, leading to a significant decrease in the total Fe (TFe) grade of the concentrate. In this work, the effect of sodium alginate …
Calcite and quartz are commonly found as gangue minerals in fluorite. The most commonly used separation method for fluorite ore is flotation [3], [6], [7]. Among them, calcite-fluorite ore contains Ca 2+ active sites on the surface of the mineral, which makes its floatability similar, and flotation separation is extremely difficult. Fluorite ...
The Improvement Effect of Dispersant in Fluorite Flotation: Determination by the Analysis of XRD and FESEM-EDX. Y. J. Li F. Sun Y. Zhou L. Zeng. Materials Science. 2015. Different dispersants were added in the dispersion process to improve the efficiency of fluorite flotation. The types and dosage of dispersant on the improvement of fluorite ...
2.1 Materials, reagents and equipment. The scheelite raw ore used in this study was obtained from Malipo mine, Yunnan Province. The assay results are listed in Tables 1 and 2.As indicated by Table 1, the primary valuable of tungsten mineral was scheelite, and the main gangue minerals were silicate, Ca-containing minerals (calcite, …
In general, precipitated calcium carbonate (PCC) is used as a mineral filler in paper industries; while natural calcite (CaCO3) ore is also suitable for industrial use if it is a finely ground high-grade material. Naturally, calcite is found in the form of high- or low-grade ores and it is one of the most widely distributed industrial minerals on the earth's crust. …
Results of micro-flotation and artificial mixed mineral experiments proved that ASKG had a strong depression effect on calcite, but the flotation of fluorite was barely effected by ASKG within the ...
In this manuscript, a novel reagent scheme is proposed that adding a small amount of citric acid (CA) can greatly improve the depression effect of sodium silicate on calcite and fluorite. The flotation results suggest that the CA concentration to be added is 4 × 10 −4 mol/L and the sodium silicate concentration is 5 × 10 −3 mol/L; the ...
3 Citations Metrics Abstract The article presents experimental research into intensification of fine-disseminated carbonate-fluorite ore flotation by adding FLOTOL …
Froth flotation is widely applied in phosphate ore concentration routes, using fatty acid salts as collectors. ... (green) collectors to improve the poor flotation performance of long-flame coal (LFC) due to its vast porosity and high oxidation degree. ... Slow-release of fluorite and its effect on flotation separation of magnesite from calcite ...
Abstract The article presents the case-study of flotation of fluorite ore from Kamarposht mine, Iran. The flotation tests allowed optimization of consumption of chemical reagents. The recommended process conditions enable production of flotation concentrate at fluorite content of 61.4% and fluorite recovery of 85.88%.
Fig. 1 (a) and (b) show the effects of addition order of reagent on flotation behavior of fluorite and calcite. The results shown in Fig. 1 (a) and (b) indicate that the addition order of depressants and collectors has obvious influence on the flotation behaviors of fluorite and calcite. The depression of calcite will become more difficult …
2020 Elsevier B.V. Strategic Ca-bearing minerals such as scheelite and fluorite are usually separated by flotation; however, their separation is quite difficult due to the similarity of the Ca ...
It has been found that the dispersion processing with CMC as dispersant could effectively improve the fluorite flotation, increased the fluorite recovery from …
The flotation performance of 37–74 µm fluorite and different size fractions of barite (−10, 10–37, 37–74 µm) were conducted as a pH function using 1×10 −4 mol/L of collector NaOl and the results of which are presented in Fig. 1. As is shown, the flotation recoveries of fluorite were very high (~90%) across the entire studied pH ...
In this study, a new flotation approach, a low-alkaline and non-desliming process, was introduced for improving lead and zinc recoveries, lowering production cost and reducing environmental pollution.Lab-scale experiments results show that the new process contributed to the flotation of the complex mixed sulfide-oxide lead and zinc ore …
Collector type and pulp pH play an important role in the lead–zinc ore flotation process. In the current study, the effect of pulp pH and the collector type parameters on the galena and ...
The flotation behavior of fluorite at a high pH (>12) is distinctly different from that at a conventional flotation pH range of 8–9, and efficient calcite/fluorite separation could be achieved by using a low …
In many mineral processing plants, using saline water has become necessary to improve water efficiency. However, the dissolved ions in the water such as Ca 2+ and Mg 2+ may have a significant negative impact on the flotation of RE (rare earth) minerals due to the chemical reaction with flotation reagents used in RE flotation. Although some …
Thiophosphate compounds have attracted much attention in coordination chemistry, but their deep adsorption mechanism remains underexplored as flotation collectors. The flotation performance and adsorption mechanism of a novel (dibutoxy-thiophosphorylsulfanyl)-acetic acid (CDDP) chelating collector on azurite surfaces were …
In a 70 mL flotation cell, the artificially mixed ore was introduced into 60 mL of water. ... Improving fluorite flotation from ores by dispersion processing. Miner. ... Y. Li, F. Sun, Y. Zhou, L. Zeng. The Improvement effect of dispersant in fluorite flotation: determination by the analysis of XRD and FESEM-EDX. J. Spectrosc., 2015 (2015 ...
At 1 kg/ton CMC addition, the increment of the CaF 2 grade was about 0.7%, and that of the recovery was about 4%, suggesting that CMC is a good dispersant for improving the fluorite flotation. Download : Download full-size image; Fig. 6. Effect of CMC addition on fluorite flotation from the fluorite ore.
This study investigates the flotation kinetics of individual platinum-group elements (PGEs) and gold, namely Pt, Pd, and 2E+Au (i.e., Pt+Pd+Au), in the context of Platreef ore flotation. Experimental tests were conducted on a Platreef ore feed using various dosages of depressants, frothers, and collectors under controlled agitation and …
From the experimental results mentioned above, it might be helpful to the fluorite flotation through eliminating the heterocoagulation in the ore slurry. Accordingly, a study for improving the fluorite flotation by dispersion processing has been carried …
Phosphoric acid and derivatives (e.g., diphosphonic acid) is the most widely used depressant in reverse flotation of phosphate ore in order to depress the valuable mineral apatite while sodium silicate and gum arabic are used as depressants for the gangue minerals in direct flotation of the phosphate ores. 5.
In this study, amino radicals were introduced into starch to improve its flocculation and depression capacity. The performances of corn starch and modified starch in refractory carbonate-containing iron ore were compared. The flotation results showed that modified starch had a stronger depression effect on hematite and quartz.
Another attempt to improve oleic acid flotation of fluorite at low temperatures using 'boosters' was by Zhou and Lu [Citation 48]. At 10°C, the tested boosters improved recovery, especially B700 and B724. When the oleic acid concentration was 10 −5 mol L −1, just 1% of a booster recovered almost all of the fluorite. With the presence ...
Fluorite is a nonrenewable mineral used to produce anhydrous hydrofluoric acid (AHF) and aluminum fluoride. The demand for low-grade fluorite powder (CaF2 < 97%) has fallen sharply owing to the current market conditions. Therefore, a large number of fluorite concentrates have been improved by acid leaching. While this approach can …
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 …
Carbonate-fluorite ore is one of the main types of fluorite ores, usually in coexistence with other gangue minerals like dolomite, calcite, and others. 5, 6 It is difficult to separate fluorite and dolomite efficiently due to their extremely similar floatability. An effective way to improve the flotation separation of fluorite and dolomite lies ...
Abstract The article presents the case-study of flotation of fluorite ore from Kamarposht mine, Iran. The flotation tests allowed optimization of consumption of …
It has been found that the dispersion processing with CMC as dispersant could effectively improve the fluorite flotation, increased the fluorite recovery from 72% to 78.5% at the same concentrate ...
It has been found that the dispersion processing with CMC as dispersant could effectively improve the fluorite flotation, increased the fluorite recovery from 72% to 78.5% at the same concentrate ...
The effects of particle size, pH, depressant amount, depressant conditioning time, collector amount, collector conditioning time and water temperature on the fluorite flotation were investigated.
A similar effect was found in tests which varied the oleic acid collector dosage. To achieve optimal flotation performance, it was suggested to decrease collector dosage when the temperature rises ...
The removal of fine quartz in fluorite concentrate is the main problem in fluorite flotation. In this study, the flotation tests on fluorite, quartz and a weight equivalent mixture (all less than 10 µm) using water glass (with …
