High-shear mixer

Charles Ross & Son Co. has introduced the Ross Solids/Liquid Injection Manifold (SLIM), a high-shear mixing system designed to prevent the formation of lumps in thickened solutions.

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Charles Ross & Son Co. (Hauppauge, N.Y.) has introduced the Ross Solids/Liquid Injection Manifold (SLIM), a high-shear mixing system designed to prevent the formation of lumps in thickened solutions. Its method of powder induction is said to be unique. The specially engineered rotor/stator assembly generates a powerful vacuum that draws solids into the mix chamber. The liquid stream then enters the mixer, where the powder is added under intense shear conditions. The resulting dispersion is expelled centrifugally through the stator openings at high velocity. Stubborn agglomerates and “fish eyes” are prevented from forming. The subsurface addition of solids also eliminates the occurrence of floating powders in batch tanks. A hose-and-wand attachment to the powder inlet allows operators to conveniently draw lightweight, free-flowing powders straight from the bulk container. For faster induction rates, solids are loaded into a hopper (see photo) located right above the mix chamber. At the end of a cycle, the mixer is easily cleaned in place.