Minerals Engineering
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publication venue for: Anisotropic adsorption of xanthate species on molybdenite faces and edges and its implication on the flotation of molybdenite fines

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type: Grant
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label: Consejo Nacional de Humanidades Ciencias y Tecnologías, (813204); National Natural Science Foundation of China, NSFC, (52074196); National Natural Science Foundation of China, NSFC; Chinesisch-Deutsche Zentrum für Wissenschaftsförderung, CDZ, (GZ 1693); Chinesisch-Deutsche Zentrum für Wissenschaftsförderung, CDZ
funding vehicle for: Anisotropic adsorption of xanthate species on molybdenite faces and edges and its implication on the flotation of molybdenite fines

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date: 2026-08-24T04:52:54
publisher: vivo
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label: RDF description of Anisotropic adsorption of xanthate species on molybdenite faces and edges and its implication on the flotation of molybdenite fines - http://orbis.uaslp.mx/vivo/individual/scopus12664

Anisotropic adsorption of xanthate species on molybdenite faces and edges and its implication on the flotation of molybdenite fines
e iscopus: 2-s2.0-85182517309
estado: published
abstract: Utilizing xanthate in bulk flotation of Cu-Mo sulfide ores is inevitable, but the implication of xanthate on the flotation of molybdenite fines is barely understood. In this study, the influence of sodium butyl xanthate (SIBX) on the flotation of molybdenite fines and the interaction mechanism was comprehensively investigated by micro-flotation tests, contact angle, adsorption capacity, electrochemical tests, atomic force microscopy (AFM), Fourier Transform Infrared Spectrometer (FTIR), X-ray Photoelectron Spectroscopy (XPS) and density functional theory (DFT) calculations. Micro-flotation tests indicated that SIBX significantly enhanced the flotation of molybdenite fines across a wide pH range. Contact angle, adsorption capacity, Tafel curves, AFM, FTIR and XPS results suggested both xanthate and dixanthogen species adsorbed on molybdenite surfaces, thus improving the hydrophobicity of both edges and faces. Rest potential measurements clarified dixanthogen species dominated on faces while xanthate ions prevailed on edges. DFT calculations elucidated dixanthogen physically adsorbed (−66.06 kJ/mol) on faces while xanthate chemisorbed (−235.62 kJ/mol) on edges via the hybridization of two S atoms within SIBX with two Mo atoms to form highly covalent bonds. This work first clearly unveiled the anisotropic adsorption mechanism of SIBX species on faces and edges, significantly improving the flotation efficiency of molybdenite fines.
related by: authorship_75979
type: Article
related by: authorship_75978
type: Generically Dependent Continuant
type: Document
type: Continuant
date time value: article date 12665
volume: 207
has publication venue: Minerals Engineering
related by: authorship_75977
most specific type: Article
freetext keyword: Anisotropic adsorption; Flotation; Molybdenite; Sodium butyl xanthate Anisotropy; Binary alloys; Contact angle; Copper compounds; Density functional theory; Flotation; Fourier transform infrared spectroscopy; Molybdenum compounds; Scanning electron microscopy; Silicon compounds; Sodium; Spectrometers; Sulfur compounds; X ray photoelectron spectroscopy; Adsorption capacities; Anisotropic adsorption; Atomic-force-microscopy; Butyl xanthates; Density-functional theory calculations; Dixanthogen; Flotation tests; Fourier transform infrared spectrometer; Molybdenite; Sodium butyl xanthate; Adsorption
doi: 10.1016/j.mineng.2023.108571
most specific type: Document
type: Thing
type: Information Content Entity
crisid: 12665
has funding vehicle: funding4847
related by: authorship_76848
artnum: 108571
type: Entity

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