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Particle interactions and colloid stability of aqueous clay mineral dispersions play a pivotal role in many unit operations and plant processes (e.g. crystallization, leaching, slurry transport and dewatering). In this study, the nature of the particle interactions, colloid stability and shear rheology of dilute (< 0.1wt.% solid) and concentrated (8–57wt.% solid) muscovite clay mineral dispersions...
The influence of interfacial chemistry and particle interactions on sedimentation and electroosmosis (EO) of coagulated iron oxide dispersions has been investigated. Both pH and ionic strength of NH 4 Cl electrolyte had a profound effect on the particle electrokinetic zeta potential and dispersion rheological behaviour (shear yield stress), impacting strongly on the dewatering behaviour. In...
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