An investigation into the flotation of muscovite with an amine collector and calcium lignin sulfonate depressant

Marion, Christopher; Jordens, Adam; McCarthy, Sheelah; Grammatikopoulos, Tassos; Waters, Kristian E.

doi:10.1016/j.seppur.2015.04.025

Cited by 43 publications

(11 citation statements)

References 58 publications

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“…The lower and upper solid lines represent a 99 % confidence interval. The methods for construction of confidence and prediction intervals of zeta potential curves can be found in Marion et al It can be seen that the ζ potential curve shows an isoelectric point (pH iep ) of approximately 2.1, where the pH iep represents the point that the ELM droplets have the lowest repulsion force between each other in the matrix. Any pH value higher than 2.1 gives a negative ζ potential value while any pH lower than 2.1 results in a positive value.…”

Section: Resultssupporting

confidence: 90%

“…The two most common methods for measuring zeta potential are electroacoustic and electrophoretic techniques, which use sound and light respectively. Since the electrophoretic method only works well for very diluted oil in water emulsions, for this investigation the electroacoustic technique was chosen. The measurements were carried out using a FieldESA (ParticleAnalytik, Germany) with an automatic titration unit.…”

Section: Experiments and Methodsmentioning

confidence: 99%

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The extraction of nickel by emulsion liquid membranes using Cyanex 301 as extractant

Kökkılıç

Marion

et al. 2018

Can J Chem Eng

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The removal of nickel ions from waste streams discharged from mining and metal plating industries has become a popular research topic over the past few decades. In this work, the emulsion liquid membrane (ELM) technique was used to remove nickel ions from synthetic aqueous solutions using bis(2,4,4‐trimethylpentyl)dithiophosphinic acid (Cyanex 301) as the extractant. Sulphuric acid was selected as the internal stripping agent. Central composite design methodology was used to obtain the optimum conditions, with the factors selected in the design being extractant concentration, stripping agent concentration, NiSO4 solution pH, and NiSO4 solution/emulsion volume ratio. It was found that the extractant concentration, stripping agent concentration, and NiSO4 solution/emulsion volume ratio had a significant effect on nickel removal. Optimum operating conditions achieved a maximum nickel removal of more than 99 %. Validation tests confirmed the good agreement between the predicted and experimental data. The emulsion was successfully broken afterwards and the oil phase was re‐tested. The effects of kinetics, loading capacity, and pH variation tests between the emulsion phase and organic phase were investigated. Zeta potential measurements suggest a final pH of around 2.0 is desirable for the post‐reaction treatment of the emulsion droplets.

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Section: Resultssupporting

confidence: 90%

Section: Experiments and Methodsmentioning

confidence: 99%

The extraction of nickel by emulsion liquid membranes using Cyanex 301 as extractant

Kökkılıç

Marion

et al. 2018

Can J Chem Eng

Self Cite

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“…The molecular layer of the gypsum crystal water and the Ca–O bond are weak and easy to dissociate from these positions when broken, which also leads to natural hydrophilic gypsum. It is also easy to achieve the separation of hydrophobic organic matter and other impurities from phosphogypsum and gypsum by adding a foaming agent [ 24 , 25 , 26 , 27 , 28 ]. After comprehensive consideration, the purity, whiteness, and recovery of CaSO 4 ·2H 2 O in the concentrate were 96.38%, 36.63, and 84.08%, respectively, at pH = 2.0.…”

Section: Resultsmentioning

confidence: 99%

A Novel Process to Recover Gypsum from Phosphogypsum

Xiao

Lü²,

Zhuang³

et al. 2022

Materials

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In this study, we investigated a coarse phosphogypsum containing 49.63% SO3, 41.41% CaO, 10.68%, 4.47% SiO2, 1.28% P2O5, 0.11% F, CaSO4·2H2O purity of 80.65%, and whiteness of 27.68. Phosphogypsum contains calcium sulfate dehydrate as the main mineral, with small amounts of brushite, quartz, muscovite, and zoisite. Harmful elements, such as silicon, phosphorus, and fluorine, are mainly concentrated in the +0.15 mm and −0.025 mm fraction, which can be pre-selected and removed by the grading method to further increase the CaSO4·2H2O content. Gypsum was recovered using a direct flotation method, which included one roughing, one scavenging, and two cleaning operations, from −0.15 mm to +0.025 mm. The test results show that a gypsum concentrate with a CaSO4·2H2O purity of 98.94%, CaSO4·2H2O recovery of 80.02%, and whiteness of 37.05 was achieved. The main mineral in the gypsum concentrate was gypsum, and limited amounts of muscovite and zoisite entered the gypsum concentrate because of the mechanical entrainment of the flotation process.

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“…In practice, the flotation process under acidic or alkaline conditions is often employed for the recovery of fine mica, particularly mica resource in tailings [ 30 , 31 , 32 , 33 ]. Both the acidic and alkaline conditions require the addition of a large volume of acid or alkali to adjust the pH values, which may lead to excessive material loss and environmental pollution.…”

Section: Introductionmentioning

confidence: 99%

Molecular Dynamics Simulation Study on the Interactions of Mixed Cationic/Anionic Collectors on Muscovite (001) Surface in Aqueous Solution

Jiang

Huang

et al. 2022

Materials

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In this study, the adsorption mechanisms of dodecylamine hydrochloride(DDAHC), sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate(SDBS), and their mixed anionic/cationic collectors at ten different molar ratios on a muscovite (Mcv) surface in neutral aqueous solution were assessed by molecular dynamics simulations (MDS). According to the snapshot, interaction energy, radial distribution function (RDF), and density profile between the Mcv surface and collector molecules, the individual DDAHC collector was an effective collector for the flotation of Mcv. The molar ratio of anionic/cationic collectors was determined to be an essential factor in the flotation recovery of Mcv. The DDAHC collector was involved in the adsorption of the mixed anionic/cationic collectors on the Mcv (001) surface, whereas SDS and SDBS collectors were co-adsorbed with DDAHC. The mixed cationic/anionic collector showed the best adsorption on the Mcv surface in a molar ratio of 2. Additionally, SDBS, which has one more benzene ring than SDS, was more likely to form spherical micelles with DDAHC, thus resulting in better adsorption on the Mcv surface. The results of micro-flotation experiments indicated that the DDAHC collector could improve the flotation recovery of Mcv in neutral aqueous solution, which was in agreement with MDS-derived findings. In conclusion, DDAHC alone is the optimum collector for Mcv flotation under the neutral aqueous conditions, while the mixture of DDAHC and SDBS collectors (molar ratio = 2:1) exhibits the similar flotation performance.

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An investigation into the flotation of muscovite with an amine collector and calcium lignin sulfonate depressant

Cited by 43 publications

References 58 publications

The extraction of nickel by emulsion liquid membranes using Cyanex 301 as extractant

The extraction of nickel by emulsion liquid membranes using Cyanex 301 as extractant

A Novel Process to Recover Gypsum from Phosphogypsum

Molecular Dynamics Simulation Study on the Interactions of Mixed Cationic/Anionic Collectors on Muscovite (001) Surface in Aqueous Solution

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