use of a collector, process for flotation separation of carbonates contained in phosphoric rock and collector for flotation separation of carbonates contained in phosphoric rock

摘要

Use of a collector, process for flotation separation of carbonates contained in phosphoric rock and collector for flotation separation of carbonates contained in phosphoric rock The invention relates to a collector for flotation separation of carbonates contained in non-sulphurous minerals , particularly phosphoric rock, comprising at least one phosphoric ester of formula (I) wherein - r1 represents h, ch3 or c2h5, - r2 represents a straight or branched alkyl or alkenyl group containing from 4 to 10 carbon atoms, R3 represents h or an appropriate cation selected from alkali metal, alkaline earth metal, ammonium, alkylammonium, alkanolammonium or glycammonium - k represents a number from 1 to 2, and - n represents a number from 0 to 4.