Froth floatation process for the concentration of sulphide ores.
Froth floatation process :
(i) This method is mainly useful for sulphide ores which have no wetting property where as the impurities get wetted.
(ii) The ore with impurities is finely powdered and kept in water, containing pine oil taken in a floatation cell.
(iii) Air under pressure is blown to produce froth in water.
(iv) Froth so produced, takes the ore particles to the surface, whereas impurities settle at the bottom.
(v) Froth is separated and washed to get ore particles.
