Mechanism of collector adsorption in fluorite flotation

Uçar, Ali; Özdağ, Hüseyin

doi:10.1179/mpm.2002.111.2.100

Cited by 22 publications

(9 citation statements)

References 5 publications

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“…Similar to metal oxide SCr electrodes the pHstirr for fluorite (111) SCrE was found to be in the pH region between pH = 3 and pH = 4 ( Figure 7) which coincides with isoelectric point of fluorite colloids particles determined at the similar experimental conditions (pHiep = 3.6). [63] The origins of both, stirring potential as well as electrokinetic streaming potential, are in the distribution of ions in the diffuse part of the EIL.…”

Section: Resultsmentioning

confidence: 99%

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The Effects on the Response of Metal Oxide and Fluorite Single Crystal Electrodes and the Equilibration Process in the Interfacial Region

Preočanin¹,

Namjesnik²,

Klačić³

et al. 2017

Croat. Chem. Acta

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Inner surface potential, one of the most important variables affecting the interfacial equilibrium of metal oxide aqueous systems, obtained by means of single crystal electrode gives valuable information about electrical charging of the metal oxide/aqueous electrolyte solution interfaces. The influence of the potential determining ions and ionic strength on the measured electrode potential as well as time of the equilibration, direction of the titration and the effect of the magnetic stirring enables the critical examination of the processes which take place during the interfacial equilibrium. For that purpose, the selected metal oxides (hematite, ceria, sapphire, and rutile) and fluorite single crystal electrodes were examined.

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Section: Resultsmentioning

confidence: 99%

“…The concentration of electrolyte was controlled by adding the corresponding inert electrolyte aqueous solution. [62][63][64] After (111) SCrE, as the typical one is shown on Figure 5. Measurements with fluorite (111) SCrE were done at pH = 5.0 ± 0.2 controled by addition of 0.1 mol dm -3 HCl.…”

Section: Potentiometric Titrationsmentioning

confidence: 99%

The Effects on the Response of Metal Oxide and Fluorite Single Crystal Electrodes and the Equilibration Process in the Interfacial Region

Preočanin¹,

Namjesnik²,

Klačić³

et al. 2017

Croat. Chem. Acta

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“…In general, coulombic attraction, physical adsorption, chemisorption, and surface precipitation have been suggested as possible mechanisms. However, there is no clear understanding of the interaction of reagents with the mineral, and the results shown by different investigations differ significantly depending on the origin of the minerals [39]. Appl.…”

Section: Interaction Mechanisms Of Collector and Depressants On Fluor...mentioning

confidence: 99%

Comparison Between Performance of Fluorite Flotation Under Different Depressants Reagents in Two Pieces of Laboratory Equipment

et al. 2020

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Fluorite is an important industrial mineral composed of calcium and fluorine (CaF2). This mineral is widely distributed through different deposits. However, in most cases, fluorite is tightly associated with gangue, such as calcite and quartz. In this paper, different depressants are tested in the flotation of fluorite in two different laboratory configurations—cell and column. Quebracho tree (QT) was tested as the main depressant in combination with white dextrin (WD), potato starch (PT), carboxymethyl cellulose (CMC), and sodium hexametaphosphate (SHMP). The optimum pulp pH of the flotation of fluorite was determined as approximately 9.5–10. The best results are obtained using a combination of quebracho and white dextrin as depressants, reaching 74% of fluorite grade for modified column flotation and 70.5% for cell flotation. Additionally, the metallurgical recovery obtained higher values when the flotation was carried out in the modified column and using the same combination of depressant agents—75% for modified column flotation and 60% for flotation cell.

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“…In other studies, foaming agent in the gas froth floatation technique is used to provide stable gas bubbles and agitation to separate hydrophilic and hydrophobic materials [7][8]. In some cases, the attempts to understand the effects involved during the interaction, harmfulness and sensitive handling of different reagents during the floatation processes have been discussed in detail [9][10][11][12][13].…”

Section: Graphical Abstract 1 Introductionmentioning

confidence: 99%

Investigation on the Beneficiation of Fluorite-ore using a mixture of Oleic acid and Palmitic acid via Froth Flotation

Fatima

Daood

Inaam

et al. 2022

Environmental Engineering Research

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Fluorite (fluorspar), an important industrial mineral ore, is one of the major raw materials for the production of hydrofluoric acid. Naturally occurring fluorite ore contains gangue minerals, primarily silica (SiO2) and calcite (CaCO3). The beneficiation of fluorspar is needed to mitigate the severity of operational issues. Several studies on fluorspar beneficiation using the froth floatation technique have been executed, but the process is restricted by the use of minerals acids to remove calcite. In this study, a novel scheme for fluorspar beneficiation was investigated for the floatation of fluorite and depression of calcite and other gangue minerals simultaneously without the use of mineral acids. Moreover, mixtures of saturated and unsaturated fatty acids (oleic acid and palmitic acid) were used instead of mineral acids. Various parameters were investigated, such as the weight percent of the feed-slurry, feed pH, the effect of reagents on the process selectivity, and the effect of feed boiling and dilution on the up-gradation of fluorspar. The adopted methodology with tested reagents resulted a 67 wt. % reduction of CO32- and 75 wt. % reduction of SiO2 in gangue material at a pH 10 for the feed slurry. Fluorspar purity increased from 65-75 wt. % to 95 wt. % after the boiling and dilution steps, respectively.

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Mechanism of collector adsorption in fluorite flotation

Cited by 22 publications

References 5 publications

The Effects on the Response of Metal Oxide and Fluorite Single Crystal Electrodes and the Equilibration Process in the Interfacial Region

The Effects on the Response of Metal Oxide and Fluorite Single Crystal Electrodes and the Equilibration Process in the Interfacial Region

Comparison Between Performance of Fluorite Flotation Under Different Depressants Reagents in Two Pieces of Laboratory Equipment

Investigation on the Beneficiation of Fluorite-ore using a mixture of Oleic acid and Palmitic acid via Froth Flotation

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