Technical Solutions for Improving Grinding Efficiency of Dispersion Equipment in the Coating Industry
In coating production, pigment dispersion and grinding are key processes that determine product tinting strength and stability. The latest industry technical research shows that the grinding efficiency can be increased by more than 30% by optimizing three core parameters of dispersion equipment. The first is grinding medium selection - compared with traditional glass beads, zirconia beads have higher density and hardness, which can generate greater shear force at the same rotation speed. They are especially suitable for difficult-to-disperse pigments such as titanium dioxide and carbon black, and the wear rate can be reduced to below 0.01%. The second is improvement of dispersion disc structure - the adoption of a double-layer serrated dispersion disc design can form a shear field with upper and lower convection inside the equipment, breaking the local mixing blind area of traditional single-layer dispersion discs and making the pigment particle size distribution more uniform. The third is optimization of cavity cooling system - the heat generated during high-speed dispersion easily causes changes in coating viscosity. New-type equipment adopts a dual cooling method combining jacketed cooling and internal cooling pipes, which can stabilize the cavity temperature at 25-35℃ and ensure dispersion quality.
Oct 30,2025
In coating production, pigment dispersion and grinding are key processes that determine product tinting strength and stability. The latest industry technical research shows that the grinding efficiency can be increased by more than 30% by optimizing three core parameters of dispersion equipment. The first is grinding medium selection - compared with traditional glass beads, zirconia beads have higher density and hardness, which can generate greater shear force at the same rotation speed. They are especially suitable for difficult-to-disperse pigments such as titanium dioxide and carbon black, and the wear rate can be reduced to below 0.01%. The second is improvement of dispersion disc structure - the adoption of a double-layer serrated dispersion disc design can form a shear field with upper and lower convection inside the equipment, breaking the local mixing blind area of traditional single-layer dispersion discs and making the pigment particle size distribution more uniform. The third is optimization of cavity cooling system - the heat generated during high-speed dispersion easily causes changes in coating viscosity. New-type equipment adopts a dual cooling method combining jacketed cooling and internal cooling pipes, which can stabilize the cavity temperature at 25-35℃ and ensure dispersion quality.
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