Morphology of Hydrophobic Agglomerates of Molybdenite Fines in Aqueous Suspensions

Abstract

In this work the morphology of agglomerates formed in the hydrophobic agglomeration of molybdenite fines in aqueous suspensions has been studied by measuring fractal dimension with image analysis method. The results have shown that the morphology closely correlated with the mechanical conditioning in the hydrophobic agglomeration. The higher the stirring speed and the longer the stirring, the more spherical and more compact the agglomerates. Also, kerosene addition could make the agglomerates to be more spherical and compact.

LEAD REMOVAL FROM AQUEOUS SOLUTION BY SPHERICAL AGGLOMERATION USING AN EXTRACT OF Agave lechuguilla Torr. AS BIOSURFACTANT

“…Because of this, it is essential to maintain the system under constant agitation during the precipitation stage. Furthermore, in order to ensure the change of hydrophilic solute towards a hydrophobic nature, the continuity of the SAT stages is required, directed towards a suitable coating of the hydrophilic precipitate with specialized particles (biosurfactant) of a hydrophobic nature (Yang et al, 2015).…”

Improving the Flotation of Unoxidized and Oxidized Molybdenite Fines Using Dodecylamine as a Collector: Flotation Tests and Interaction Mechanism

“…Nevertheless, these refractory ores are required to be finely ground to liberate them from other gangue minerals. As a laminar mineral with distinct anisotropic properties, molybdenite possesses polar edges and non-polar faces [3]. The hydrophilic edge originates from the cleavage of S-Mo covalent bonds, while the hydrophobic face is derived from the break of van der Waals force between S-Mo-S layers [4].…”

Quartz Fine Particle Processing: Hydrophobic Aggregation by Shear Flocculation

“…Flocculation-flotation (FF) is a technique to aggregate the fine particles using a polymer flocculant and hydrophobic interactions to obtain large-size clusters, also known as flocs, to tackle those issues. Hydrophobic aggregates are defined as compact structures with hydrophobic surfaces, behaving in the conventional flotation process as individual particles [5,6]. According to Warren [7], the shear flocculation process is governed by the surface charge of the suspended particles, the degree of hydrophobicity, and the hydrodynamic conditions.…”