The dispersion of the pigment is usually carried out with a high-shear emulsifier. In the high-shear emulsifier, the pigment aggregates are subjected to shearing force, grinding force, etc., so that the pigment particles are uniformly dispersed in the liquid medium. Usually, according to the different product types and processing characteristics, the appropriate grinding and dispersing equipment is first selected, and then the basic process mode is determined.
The high-shear emulsifier forms strong hydraulic shearing, tearing and collision at the outer end of the high-speed rotating rotor, so that the pigment slurry is fully dispersed, emulsified and broken, and then injected through the stator slot. The pigment slurry is continuously ejected in the radial direction at a high speed. Under the action of the container wall, the pigment slurry changes the flow direction, forming two upward and downward turning liquid flows, which flow to the upper and lower feeding areas of the working head. After several cycles, the final product is complet
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