[Dean]

The colloid mill grinding mechanism for solids relies on the material being sheared and compressed as it passes between the closely spaced rotor and stator surfaces, often serrated or grooved to enhance the effect. Combined with turbulence and impact, this shearing action fractures solid particles suspended in the liquid carrier, gradually reducing them to a fine colloidal size suitable for suspensions.

[Dean]

Colloid mill gap adjustment directly controls the intensity of shear applied to the material. Narrowing the gap increases shear rate and produces finer particle size but raises power consumption, heat generation, and wear, while widening it reduces shear intensity and yields coarser dispersions. Operators typically fine-tune this clearance gradually while monitoring viscosity and particle size to reach the desired product specification.

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