Effects of shear rate and particle concentration on rheological properties of magnetic particle suspensions
Source abstract
Abstract
Rheological characterizations were made for various types of magnetic particles (rod-like γ-Fe2O3, CrO2, and plate-like Ba-ferrite) and nonmagnetic (rod-like α-Fe2O3) suspensions, in terms of particle concentration and shear rate. Shear rate dependence on viscosity was accurately described by the Casson equation. The highest yield stress for Ba-ferrite among the four types of particles represents the sensitive flocculation characteristics of Ba-ferrite with respect to concentration. The effect of non-magnetic α-Fe2O3 and magnetic γ-Fe2O3 particle mixtures on suspension viscosity was also examined, and a negative deviation from the tie line of individual particle viscosities was observed.
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Research context
OpenAlex topics: Minerals Flotation and Separation Techniques · Iron oxide chemistry and applications · Electrostatics and Colloid Interactions
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References (25)
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