What colloid mill rotor-stator configuration is optimal for achieving required droplet size in bitumen emulsion?

Optimal configuration depends on target PSD and viscosity, but road grade emulsions typically require a rotor-stator set that delivers high shear with controlled residence time. Multi row stators or toothed designs improve breakup efficiency, while adjustable gaps allow tuning for different grades. For polymer or rubber systems, mills must handle higher torque and may use more open stators to avoid overheating and plugging. The best choice is the one that achieves droplet size targets consistently without excessive temperature rise or emulsifier degradation.