Flotation—Depressants
Enabling flotation selectivity through controlled gangue suppression
Flotation selectivity through targeted gangue suppression
Depressants support mineral concentration by selectively suppressing unwanted minerals while preserving flotation of valuable phases. By modifying surface chemistry, they improve flotation selectivity and separation control, helping operations achieve more consistent recovery-grade performance in complex flotation systems.
Their role is critical in ores containing clays, talc, carbonaceous material, or other naturally hydrophobic phases that can compromise flotation selectivity and downstream stability.
Why this function matters
As ore mineralogy becomes more complex, unmanaged gangue flotation can reduce flotation selectivity and disrupt recovery-grade performance. Naturally floating gangue introduces variability into flotation and downstream processing, making selective depression essential for maintaining concentrate quality and predictable metallurgical outcomes.
Depressant performance matters because poor suppression can quickly propagate operational risk, affecting concentrate quality, reagent consumption, thickening behavior, and tailings stability. Selective depression is therefore essential to achieving robust flotation selectivity and predictable performance under variable operating conditions.
