Depramin® products are polymeric depressants for mineral froth flotation. They are specifically engineered to counter the contaminating effects of naturally floating gangue minerals.

Froth flotation is the most important method for separating valuable minerals from waste materials in ore deposits. This technique is a physico-chemical separation process based on a difference in hydrophobicity between the desired minerals and the unwanted minerals such as talc, serpentine, chlorite, anhydrite. To change the natural hydrophobic gangue – and to enhance the recovery of valuable minerals – polymeric depressants like our Depramin products have to to be added.

Depramin is a series of polymeric depressants specifically engineered to counter the contaminating effects of naturally floating gangue minerals. Depramin selectively adsorbs onto the surfaces of the hydrophobic gangue minerals, thus reducing their tendency to float in froth flotation processes.

Depramin has proven itself effective in a wide range of mineral froth flotation processes, but is primarily used in sulfide mineral flotation (PGMs, Ni, Cu) and potash. Depramin is offered in a wide range of chemistries and AkzoNobel’s unparalleled experience in mineral flotation allow us to suggest products suitable for most flotation processes.