Bubbles Are the Whole Point
Flotation only works because valuable mineral particles attach to air bubbles and rise to the surface. A frother’s job is to make sure those bubbles form at the right size and stay stable enough to carry mineral-laden froth to the launder — without collapsing too soon or becoming so stable that the froth becomes unmanageable.
The Balance Between Froth Stability and Selectivity
Too little frother and bubbles coalesce before they can carry mineral to the concentrate; too much and the froth becomes overly stable, dragging entrained gangue along with the valuable mineral and hurting concentrate grade. Finding the sweet spot is an ongoing operational balance, not a one-time setting.
Frother Choice Affects Bubble Size Distribution
Different frother chemistries produce different characteristic bubble sizes, which in turn affects both recovery and selectivity. This is part of why switching frother type — not just adjusting dosage of your current one — is sometimes the more effective lever when a circuit’s flotation performance plateaus.
Interaction With Water Chemistry
Frother performance can be sensitive to water chemistry, particularly in circuits using recycled process water with elevated dissolved salts. What performs well on fresh water bench tests doesn’t always translate directly to plant water conditions, which is worth testing for explicitly.
Practical Considerations When Sourcing
- Confirm frother type and expected bubble-size characteristics for your ore and water chemistry
- Request current TDS and SDS documentation
- Discuss packaging and dosing-system compatibility
- Establish consistent supply to avoid performance drift between batches
Contact us for frother options, technical documentation and bulk pricing suited to your flotation circuit.
