Amine and diamine compounds and their use for inverse froth flotation of silicate from iron ore

摘要

Compounds of the 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 an aliphatic alkylene group containing 2 to 6 carbon atoms; Z is an aliphatic alkylene group containing 2 to 6 carbon atoms; Y⁻ is an anion; and R is an aliphatic iso C₁₃H₂₇-group with average branching degree ranging from 1.5 to 3.5. The compounds are particularly suitable as flotation collectors for enriching an iron mineral from a silicate-containing iron ore.