| abstract |
This method, useful for the recovery of mineral portions of interest by flotation with the foam, consists in subjecting a particular ore which contains silica or siliceous gangue and which is in the form of an aqueous suspension, to a flotation at the foam under conditions such that the flotation of silica or siliceous gangue is lowered by the use of an effective amount of a hydroxyl-containing compound and selected from a lower alkaanolamine, an alkylene glycol, the acid lactic acid, glycolic acid, beta-hydroxy-1-propanesulfonic acid, glycerol, trihydroxybenzoic acid, hydroxybenzoic acid, alcohols such as simple sugars such as sucrose, glucose, dextrose and their derivatives. mixtures. |