Understanding the role of ion interactions in soluble salt flotation with alkylammonium and alkylsulfate collectors

► Ions of brine solutions influence flotation separation of soluble minerals. ► KCl crystals can be floated with dodecylamine hydrochloride or Na dodecylsulfate. ► NaCl crystals cannot be floated with these surfactants. ► Ion specificity is significant in flotation of soluble minerals.