AMINE AND DIAMINE COMPOUNDS AND THEIR USE FOR INVERSE FROTH FLOTATION OF SILICATE FROM IRON ORE

摘要

The invention relates to a process for enriching an iron mineral from a silicate containing iron ore by inverse flotation comprising the addition of a collector or collector composition comprising at least one of the compounds of formulae RO-X-NH2 (Ia); RO-X-NH3+Y- (Ib); RO-X-NH-Z-NH2 (IIa); and RO-X-NH-Z-NH3+Y- (IIb), in which X is a linear or branched aliphatic alkylene group containing 2 to 6 carbon atoms; Z is a linear or branched aliphatic alkylene group containing 2 to 6 carbon atoms; Y- is an anion; and R is an aliphatic group of the formula (I) C5H11CH(C3H7)CH2- (I) wherein the C5H11 moeity of the aliphatic group of the formula (I) comprises 70 to 99% by weight n-C5H11-, and 1 to 30% by weight C2H5CH(CH3)CH2- and/or CH3CH(CH3)CH2CH2-. RO-X-NH2(Ia) RO-X-NH3+Y-(Ib) RO-X-NH-Z-NH2(IIa) RO-X-NH-Z-NH3+Y-(IIb) C5H11CH(C3H7)CH2-(I)