Flow of mineral suspensions: Kaolin (left) and Bentonite (right)
Industrial fluids, such as thickened paste etc., commonly found in tailings transportation exhibit wide particle size distributions, large particle sizes and very high viscosities. These industrial fluids make it impossible to conduct flow measurements at all with optical techniques. Our ILR rheometer was successfully evaluated in concentrated, non-Newtonian mineral suspensions. For example, bentonite 10% w/w with a yield stress of 40 Pa was successfully characterized. Bentonite is typically used as a drilling mud. The results obtained showed significant potential for application in more viscous fluids and larger pipe diameters using state-of-the-art sensors and acoustic coupling technologies.
Measured spectra of mineral suspensions: Kaolin (left) and Bentonite (right)
Our ILR instrument was used to measure velocity profiles, yield stress and viscosity of Kaolin suspension with a total concentration of solids of up to 40% w/w.
Our ILR instrument was used to measure velocity profiles, yield stress and viscosity of Bentonite suspensions with a total concentration of solids of 10% w/w.
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