The mechanism of fatty acid adsorption in the presence of fluorite, calcite and barite

Marinakis, K.I.; Shergold, H.L.

doi:10.1016/0301-7516(85)90001-8

Cited by 96 publications

(38 citation statements)

References 8 publications

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“…Previous reports showed that oleic acid (OA) has a stronger collecting power for fluorite than for calcite [10][11][12]. In this work, SOA was used to improve its collecting power for calcite.…”

Section: Single Mineral Flotation Experiments Resultsmentioning

confidence: 99%

Selective Flotation of Calcite from Fluorite: A Novel Reagent Schedule

Gao

Zhu

et al. 2016

Minerals

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Abstract:Fluorite is an important strategic mineral. In general, fluorite ores will contain a certain amount of calcite gangue mineral. Thus, they need to be separated from each other. For an economic separation, a reverse flotation process is used to float calcite gangue from fluorite. However, little information on the separation is available. In this study, a novel reagent schedule using citric acid (CA) as the depressant, sodium fluoride (NaF) as the regulator and sulfoleic acid (SOA) as the collector, was developed to separate calcite from fluorite. The results demonstrated a high selectivity for the flotation of calcite from fluorite using this new reagent schedule. The best selective separation for a single mineral and mixed binary minerals was obtained when 200 mg/L of NaF, 50 mg/L of CA, and 6 mg/L of SOA were used at pH 9. In addition, a batch flotation experiment was carried out using a run-of-mine feed material. Selective separation was achieved with 85.18% calcite removal while only 11.2% of fluorite was lost. An attempt was made to understand the effect of the new reagent schedule on the flotation of calcite. The results from both microflotation and bench scale flotation demonstrated a great potential for industrial application using this novel reagent schedule to upgrade fluorite ore.

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Section: Single Mineral Flotation Experiments Resultsmentioning

confidence: 99%

Selective Flotation of Calcite from Fluorite: A Novel Reagent Schedule

Gao

Zhu

et al. 2016

Minerals

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“…pH and mineral dissolution are cardinal for their selective separation, and using dissolve air flotation can enhance the separation efficiency when slime is apparent [12,15,53,60,61]. In the absence of modifiers, dolomite and magnesite recoveries were around 80% and 45%, respectively.…”

Section: Flotation Separation Of Dolomite From Magnesitementioning

confidence: 99%

A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite)

et al. 2018

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Abstract:It is well documented that flotation has high economic viability for the beneficiation of valuable minerals when their main ore bodies contain magnesium (Mg) carbonates such as dolomite and magnesite. Flotation separation of Mg carbonates from their associated valuable minerals (AVMs) presents several challenges, and Mg carbonates have high levels of adverse effects on separation efficiency. These complexities can be attributed to various reasons: Mg carbonates are naturally hydrophilic, soluble, and exhibit similar surface characteristics as their AVMs. This study presents a compilation of various parameters, including zeta potential, pH, particle size, reagents (collectors, depressant, and modifiers), and bio-flotation, which were examined in several investigations into separating Mg carbonates from their AVMs by froth flotation.

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“…The fatty acid type collectors, such as oleic acid and sodium oleate, are widely used in the flotation of fluorite, barite and calcite [21][22][23][24]. Flotation recovery of these three minerals with different sodium oleate dosages at pH = 7 are presented in Figure 2.…”

Section: Effects Of Sodium Oleate Dosage On Flotation Behaviourmentioning

confidence: 99%

Selective Separation of Fluorite, Barite and Calcite with Valonea Extract and Sodium Fluosilicate as Depressants

Ren

Yu²,

Gao

et al. 2017

Minerals

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Fluorite, barite and calcite are important industry minerals. However, they often co-exist, presenting difficulty in selectively separating them due to their similar surface properties. In this study, valonea extract and sodium fluosilicate were used as depressants to selectively separate them by flotation, with sodium oleate as the collector. The single mineral flotation results showed that valonea extract displayed the strongest depression on calcite, while sodium fluosilicate displayed the strongest depression on barite. These two depressants allowed selective separation of the three minerals through sequential flotation. The flotation of mixed minerals showed that 94% of the calcite was successfully depressed by the valonea extract, and 95% recovery of the fluorite was achieved in the subsequent flotation with sodium fluosilicate depressing barite. The different depressant-mineral interactions were investigated via electro-kinetic studies and molecular dynamics (MD) simulations using the Materials Studio 6.0 program. The valonea extract exhibited the strongest adsorption on the calcite surface, and sodium fluosilicate exhibited the strongest adsorption on the barite surface, which prevented oleate species from reacting with Ca 2+ or Ba 2+ surface sites. This study provides useful guidance for how to process fluorite, barite and calcite resources.

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The mechanism of fatty acid adsorption in the presence of fluorite, calcite and barite

Cited by 96 publications

References 8 publications

Selective Flotation of Calcite from Fluorite: A Novel Reagent Schedule

Selective Flotation of Calcite from Fluorite: A Novel Reagent Schedule

A Review of Flotation Separation of Mg Carbonates (Dolomite and Magnesite)

Selective Separation of Fluorite, Barite and Calcite with Valonea Extract and Sodium Fluosilicate as Depressants

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