A thorough review of the major parameters that affect solid-liquid slurry wear on impellers and techniques for minimizing wear\r\nis presented. These major parameters include (i) chemical environment, (ii) hardness of solids, (iii) density of solids, (iv) percent\r\nsolids, (v) shape of solids, (vi) fluid regime (turbulent, transitional, or laminar), (vii) hardness of the mixer�s wetted parts, (viii)\r\nhydraulic efficiency of the impeller (kinetic energy dissipation rates near the impeller blades), (ix) impact velocity, and (x) impact\r\nfrequency. Techniques for minimizing the wear on impellers cover the choice of impeller, size and speed of the impeller, alloy\r\nselection, and surface coating or coverings. An example is provided as well as an assessment of the approximate life improvement.
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