Critical surface tension of wetting and of floatability of molybdenite and sulfur

Kelebek, Ş.

doi:10.1016/0021-9797(88)90187-7

Cited by 54 publications

(43 citation statements)

References 27 publications

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“…The γ c parameter is determined by contact angle measurement, flotation, immersion time, bubble pickup, film flotation, automatic wetting balance, and modified Hildebrand-Scott equation methods [8][9][10][11][12][13][14]. The Zisman contact angle measurement technique and the flotation method are the two major techniques used to determine the (γ c ) values of minerals among these experimental and empirical techniques [15][16][17][18].…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Determination of the critical surface tension of wetting of minerals treated with surfactants by shear flocculation approach

Özkan

2004

Journal of Colloid and Interface Science

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Section: Theoretical Backgroundmentioning

confidence: 99%

Determination of the critical surface tension of wetting of minerals treated with surfactants by shear flocculation approach

Özkan

2004

Journal of Colloid and Interface Science

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“…Characteristically, in porphyry copper flotation plants, molybdenum exhibits lower recovery than copper, in spite of the apparent natural hydrophobicity of molybdenite (Kelebek, 1988). Furthermore, molybdenum recovery displays high variability.…”

Section: Introductionmentioning

confidence: 98%

A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit

Zanin

Ametov

Grano

et al. 2009

International Journal of Mineral Processing

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“…Molybdenite is anisotropic due to its layered structure [1,2]. It exhibits two types of surfaces, namely face and edge, resulting from the break of S-S molecular bonds (nonpolar faces) and the rupture of the strong covalent Mo-S bonds (polar edges), respectively.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Ca2+ and pH on the Interaction between PAHs and Molybdenite Edges

Wan

Yang

et al. 2017

Minerals

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Nonpolar hydrocarbon oils are widely used as collectors for floating molybdenite. However, they can only adsorb on molybdenite faces and not on molybdenite edges, resulting in limited molybdenite recovery, especially in processed water containing a high amounts of Ca 2+ . In this study, the influence of Ca 2+ and pH on the adsorption of polycyclic aromatic hydrocarbons (PAHs), as part of composite collection on molybdenite edges, was studied. It was found that PAHs could only adsorb on molybdenite edges in the presence of Ca 2+ . Ca 2+ reacted with molybdenite edges to form CaMoO 4 precipitates. Then, CaMoO 4 precipitates interacted with PAHs to form a structure of π-cation-π by (1) the cation-π interaction, (2) the π-π interaction and (3) the electrostatic interaction. It was also found that CaMoO 4 precipitates on molybdenite edges promoted the adsorption of PAHs. The more the CaMoO 4 precipitates, the easier the PAHs adsorption occurred. As a result, the high amount of Ca 2+ and low pH enhanced the adsorption of PAHs on molybdenite edges. This study provides insights into reducing the deleterious effect of Ca 2+ on fine molybdenite flotation.

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Critical surface tension of wetting and of floatability of molybdenite and sulfur

Cited by 54 publications

References 27 publications

Determination of the critical surface tension of wetting of minerals treated with surfactants by shear flocculation approach

Determination of the critical surface tension of wetting of minerals treated with surfactants by shear flocculation approach

A study of mechanisms affecting molybdenite recovery in a bulk copper/molybdenum flotation circuit

The Influence of Ca2+ and pH on the Interaction between PAHs and Molybdenite Edges

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