Determination of flocculation characteristics of natural stone powder suspensions in the presence of different polymers

Chemical and Process Engineering

“…Moreover, according to the Stokes's law (Chanamai and McClements, 2000;Wassenius et al, 2001), particle migration rate for a monodisperse diluted system of spherical particles is directly proportional to the square of particle (drop) diameter of the dispersed phase, the difference in density of both phases, and acceleration having an effect on the emulsion, while inversely proportional to the viscosity of the continuous phase. Thus, from the engineering point of view, lowering the dispersed phase migration speed can be the result of many process and operating parameters, the incorrect selection of which may result in occurrence of undesired phenomena -creaming (Abismaıet al, 2000;Celia et al, 2009;Kowalska et al, 2015), sedimentation (Akther et al, 2008), or phases inversion (Basaran and Tasdemir, 2014;Li et al, 2016;Zawala et al, 2017) -leading finally to system destabilization. Hence, the engineering aspect is closely related with determination of mixing power (suitable frequency of revolutions) necessary to ensure the required system uniformity, which usually increases with the rise of the continuous phase kinematic viscosity (Rosdi et al, 2018).…”