Select amphiphilic surfactants with optimal hydrophobicity and molecular structure. Combine primary surfactants (for ion complexation) with co-surfactants like alcohols or polymers (e.g., polyacrylamide) to modulate foam viscosity and drainage properties.

Use flow regulators (venturi nozzles or static mixers) to generate narrow bubble size distribution (50–200 μm). Implement a "foam stabilization zone" (packed column or mesh structure) at the cell top to optimize bubble size distribution.

Adjust pH to optimize surfactant ionization and ion-surfactant complex stability. Modify ionic strength with electrolytes (e.g., NaCl) to reduce electrostatic repulsion between bubbles while avoiding surfactant precipitation.

Redesign flotation cells with high-shear (bubble generation) to low-shear (foam stabilization) zones. Use baffles or two-stage systems. Consider centrifugal flotation devices to minimize axial turbulence.

Use selective silicone-based antifoams targeted at non-essential bubbles. Implement real-time foam height sensors with automated dosing systems to dynamically optimize foam stability.

Implement in-situ measurements (laser diffraction, conductivity) for real-time adjustments. Use machine learning models to predict and proactively adjust foam behavior.