![]() ![]() This also applies, for example, to aqueous solutions but not to most suspensions. They largely retain their viscosity - independent of any shear effects. Water or edible oil, on the other hand, behave Newtonian. ![]() In this case, the liquid material mixing in the powder is positively supported. ![]() Its viscosity decreases when it is pumped, conveyed, metered or sprayed. Starch suspensions are also highly dilatant.Ī structurally viscous (pseudoplastic) liquid, on the other hand, reacts completely differently to shear impact. Amino acid additions in liquid form, such as aspartic acid, glycine, methionine, tryptophan, lysine, threonine or valine, tend to behave dilatantly so does honey. It is then likely that many small moist granules will form in the powder. This is unfavorable for the mixing process. Shear is particularly high when the liquid is sprayed.įor example, if one were to attempt to pump a dilatant fluid with a centrifugal pump or inject it into the mix with a nozzle, its viscosity would increase. Shear stress is also present when the fluid flows through pipes. Shear stress is triggered, for example, when a liquid is mixed or pumped. There are great differences between the viscosity value obtained in previous studies and the present one, being an example the Brazilian honeys, with a maximum value for viscosity of 5.09 Pa s. Continuous Granulator / Ring-layer mix-pelletizer (RMG)ĭepending on their type (dilatant, Newtonian or structural viscous), liquids behave differently when subjected to shear stress.Single-shaft drum mixer / powder mixer (EM) Viscosity Scale Glycerin or Motor Oil (SAE 60), 1,000 - 2,000, centipoise (cps) Pourable Urethane Rubbers, 1,000 - 3,000, centipoise (cps) Honey or Corn.Vertical single-shaft mixer / ribbon blender (VM).Vertical mixer / vertical twin-shaft mixer (HM).Conical mixer / vertical cone mixer and powder blender (AM). ![]()
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