Effect of roughness and shape factor on flotation characteristics of glass beads

Hassas, Behzad Vaziri; Caliskan, Hidayet; Güven, Onur; Karakaş, Fırat; Çınar, Mustafa; Çelik, M. S.

doi:10.1016/j.colsurfa.2015.12.025

Cited by 137 publications

(29 citation statements)

References 57 publications

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“…These attractive forces may be due to the presence of nano bubbles present at such hydrophobic surfaces. As suggested in the literature, when two hydrophobic surfaces are brought close to each other, capillary bridging between these nano bubbles takes place leading to attraction which can be considered to be an explanation for hydrophobic interactions [34][35][36][37][38][39][40][41]. One more observation that can be made from Fig.…”

Section: Afm Surface Force Measurementsmentioning

confidence: 88%

The surface state of hematite and its wetting characteristics

Shrimali

Jin

Hassas

et al. 2016

Journal of Colloid and Interface Science

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Section: Afm Surface Force Measurementsmentioning

confidence: 88%

The surface state of hematite and its wetting characteristics

Shrimali

Jin

Hassas

et al. 2016

Journal of Colloid and Interface Science

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“…The surface microstructure and roughness are important parts of mineral surface physical properties [9]. It has been shown that the surface roughness has an effect on the surface wettability or flotation performance of quartz [7,19,20], barite [21], malachite [22], glass beads [8], complex sulfide ores [23,24], coal [25] and so on. Calcite, barite, and quartz particles with different surface roughness were obtained by using a pulverizer, ball mill, and autogenous mill, and the contact angle measurements showed that the particles with the rougher surface had higher wettability [26].…”

mentioning

confidence: 99%

“…The flotation performances of the pyrite particles ground by different mills using a Hallimond tube suggested that the lower roughness and acuteness values caused higher flotation recoveries for the pyrite particles [28]. In turn, the flotation characteristics of glass beads with different roughness were studied using cetyltrimethylammonium bromide as a collector, and the results showed that the surface roughness improved the flotation recovery and bubble adhesion of glass beads [8]. Malachite ground with quartz of greater hardness had a rougher surface than that with montmorillonite, and therefore, showed a greater recovery after adsorption of the collector with a larger contact angle [22].…”

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confidence: 99%

Insight into the Influence of Surface Roughness on the Wettability of Apatite and Dolomite

Wang

Zhang

2020

Minerals

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Surface roughness has an important influence on the wettability of particles. This paper is an innovative exploration to control the surface wettability of apatite and dolomite from the perspective of roughness in the background of phosphate flotation. Roughness characteristics of apatite and dolomite particles and its effects on wettability were investigated with surface roughness, contact angle measurements, and SEM analysis. The relationship between surface energy and wettability of different roughness surfaces was also discussed. The results indicated that the influence of roughness on apatite and dolomite particles showed the same regularity, and wettability increased with the increasing roughness for hydrophilic surfaces, while the wettability decreased for hydrophobic surfaces. The influence of roughness on wettability can be well explained by Wenzel and Cassie models, and the surface energy of different rough surfaces had a strong correlation with their wettability. When sodium oleate was added after acid treatment, the apatite was hydrophilic, while the dolomite was hydrophobic; the difference in wettability between them became greater as surface roughness increased. Thus, it can be predicted that the selective separation of dolomite and apatite under acid reverse flotation conditions can be strengthened by increasing the mineral surface roughness during comminution.

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“…The RMS surface roughness of the sample was 71.0 nm. Comprehensive SEM and AFM results, it indicates that the pretreatment with Pb 2+ increased the surface roughness of the hemimorphite, owing to the formation of lead sulfide on the mineral surface [30][31][32].…”

Section: Afmmentioning

confidence: 96%

Strengthening Sulfidation Flotation of Hemimorphite via Pretreatment with Pb2+

et al. 2019

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The conventional sulfidation-xanthate flotation process that consists of sulfidization with sodium sulfide, activation by heavy-metal ions, and collection with xanthate is not sufficiently efficient for treating hemimorphite, and the dosages of the sulfurizing reagent and metal ions are large. In this study, the sulfidation flotation (Pb 2+ + Na 2 S + Pb 2+ + xanthate) of hemimorphite was strengthened by pretreating with Pb 2+ before sulfidation. Microflotation test results indicated that the recovery of hemimorphite increased by 5-10% after pretreatment with Pb 2+ . The comprehensive results of adsorption experiments, scanning electron microscopy-energy-dispersive X-ray spectroscopy, atomic force microscopy, and X-ray photoelectron spectroscopy indicated that a large amount of Pb 2+ was adsorbed on the hemimorphite surface and entered the lattice, forming Zn (4−x) Pb x Si 2 O 7 (OH) 2 ·H 2 O. The newly formed component had an increased amount of surface sulfidation active sites and had the effect of induced crystallization, making the surface more effective for sulfidation. After the Pb 2+ was added to the pulp, a large number of uniform and dense PbS species were formed on the hemimorphite surface, increasing the number of adsorption sites for xanthate and reducing the competitive adsorption of residual S 2− on the xanthate.

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Effect of roughness and shape factor on flotation characteristics of glass beads

Cited by 137 publications

References 57 publications

The surface state of hematite and its wetting characteristics

The surface state of hematite and its wetting characteristics

Insight into the Influence of Surface Roughness on the Wettability of Apatite and Dolomite

Strengthening Sulfidation Flotation of Hemimorphite via Pretreatment with Pb2+

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