Slurry particle bouncing

Saltation is also used to transport settling slurries through pipelines [Condolios and Chapus (1963a)]. In this case the solid particles bounce and roll along the bottom of a horizontal pipe. 

Simpler dripping methods have been reported where the solidification starts immediately after contact of the drops with the liquid. An example represents freezing of slurry droplets in liquid nitrogen and subsequent freeze-drying and calcination of the bodies [50]. However, such methods produce particles of anisotropic shape, and the size distributions are broad because many droplets break apart upon bouncing against the liquid surface. 

Other modes of wear are also encountered when handling slurries. As shown in Fig. 15, these include abrasion-corrosion (the most severe wear mode), scouring wear, abrasive metal-to-metal wear (crushing and grinding), high-velocity erosion, low-velocity erosion, saltation wear (rapid wear caused when particles are moved forward in a series of short intermittent bounces from a bottom surface), and cavitation. 

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