To optimize Dispersion Kettle process parameters, material characteristics, equipment parameters, and process control need to be coordinated and adjusted. The specific measures are as follows:
1. Mixing system matching
Linear speed: adjusted according to material viscosity, 20-25m/s for low viscosity (<5000cP) and 15-20m/s for high viscosity (>10000cP).
Dispersion disk diameter: 1/3-1/2 of the kettle diameter, such as φ300-500mm dispersion disk for a 1m diameter kettle.
Blade combination: double-layer paddle (upper serrated disk + lower anchor paddle) improves circulation efficiency and reduces dead corners.
2. Temperature and pressure control
Heating rate: heat-sensitive materials ≤2℃/min, ordinary materials ≤5℃/min, jacket temperature difference ≤20℃.
Vacuum degree: Pump to -0.08MPa in the later stage of dispersion, maintain degassing for 10-15min, and solvent-based systems require higher vacuum.
Pressure dispersion: Apply 0.3-0.5MPa pressure to nanomaterials to inhibit agglomeration.
3. Optimization of feeding strategy
Powder addition: Negative pressure inhalation is performed 2-3 times, with an interval of 5min each time to avoid agglomeration.
Premixing process: High-solid content materials are first made into 50-60% premixed slurry, and then diluted and dispersed.
Dispersant: Add 0.5-2% to reduce surface energy and shorten dispersion time by 30%.
4. Process monitoring and energy efficiency
Power curve: The end point is judged by the motor current fluctuation (<3%) to avoid over-dispersion.
Intelligent control: The PID algorithm automatically adjusts the speed and temperature, reducing energy consumption by 15%.
Segmented speed regulation: high-speed dispersion for 15-20 minutes, then low-speed homogenization for 10 minutes, saving 20% energy
If you are interested in learning more about HDispersion Kettle, please visit www.mixerbeadmill.com! We have industry-leading technology and professional customer service, and we look forward to working with you to create a better future together!
