Road American
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What adjustments in emulsifier dosing and pH control are required for stable cationic bitumen emulsion production?
Cationic emulsions rely on maintaining the correct acidified soap solution so droplets keep their positive charge and remain stable until contact with aggregates. Emulsifier dosing is tuned to bitumen grade, target residue, and required break behavior. pH control is critical because too high pH reduces cationic performance and may cause instability, while too low can increase corrosion and affect breaking. Plants typically control pH at the soap tank with metered acid dosing, frequent checks, and alarms for drift.
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