Selective Flotation Separation of Feldspar in Non Fluoride ...
In the conventional flotation separation of feldsparquartz, hydrofluoric acid is used to suppress quartz and activate feldspar, and a long chain amine salt (acetate or chloride) is used as a collector. The bulk of amine collectors used in current feldspar operations are applied as the watersoluble acetates of the freebase amines.