What are the critical process parameters in continuous asphalt emulsion manufacturing lines?

The critical parameters are phase temperatures, asphalt to water ratio accuracy, emulsifier and acid or base dosing for target pH, colloid mill rotor speed and gap, and residence time through the mill. Water quality such as hardness and ionic strength must be controlled because it affects stability and charge. Online monitoring typically includes flow, temperature, pressure, density or mass flow, and sometimes particle size proxies. Cleanliness matters: contamination by salts, cement dust, or incompatible products can trigger coagulation. Consistent start-up and shutdown procedures reduce off-spec transitions.