Abstract: The invention relates to a method for manufacturing a concentrate enriched in iron mineral content from an ore, which contains an iron mineral and silicate, by a reverse flotation, which method comprises the step of (c) adding a collector composition comprising (i) an amidoamine, which contains a compound of formula I or a salt of a protonated compound of formula I and an anion; (ii) an ethoxylate, which contains a compound of formula II RE—O—(—CH2—CH2—O—)n—H??(II), wherein RE is a linear or mono-branched aliphatic C10-C20 alkyl or a linear aliphatic C10-C20 alkenyl, and n is an integer from 1 to 12, to a prepared aqueous pulp of the ore and optionally one or more flotation auxiliary to obtain an aqueous mixture.

Abstract: The invention relates to a method for manufacturing a concentrate enriched in iron mineral content from an ore, which contains an iron mineral and silicate, by a reverse flotation, which method comprises the step of (c) adding a collector composition comprising (i) an amidoamine, which contains a compound of formula I or a salt of a protonated compound of formula I and an anion, and (ii) an alkyl polyglycoside, which contains a compound of formula II wherein RAP is a linear or branched C6-C22 alkyl or a linear C6-C22 alkenyl, G1 is a monosaccharide residue having 5 or 6 carbon atoms, x is an average value from 1 to 10, to a prepared aqueous pulp of the ore and optionally one or more flotation auxiliary to obtain an aqueous mixture.

Abstract: Described herein are methods for manufacturing a concentrate enriched in iron mineral content from an ore, which contains an iron mineral and silicate, by a reverse flotation. The method includes adding a first amine to a prepared aqueous pulp of the ore and optionally one or more flotation auxiliaries to obtain an aqueous mixture. The first amine (A) may be a compound of formula I a salt of a protonated compound of formula I and a first anion or a mixture thereof. A second amine, which is a compound of formula II a salt of a protonated compound of formula II and a second anion or a mixture thereof, can be further added. Further described herein are specific compositions of the first amine (A) and the second amine (B) for a use as a flotation collector.

Abstract: Presently claimed invention is directed to a collector composition for the beneficiation of a mineral comprising at least one component (A) selected from the group consisting of anionic (A1) surfactants, cationic (A2) surfactants, ampholytic (A3) surfactants and non-ionic surfactants (A4), and at least one component (B) selected from the group consisting of alkoxylated polyalkyleneimine (B1) and alkoxylated hexamethylene diamine (B2).

Abstract: The invention relates to a method for manufacturing a concentrate enriched in iron mineral content from an ore, which contains an iron mineral and silicate, by reverse flotation, which method comprises the step of (c) adding a compound of formula I wherein R1 is C9-C22 alkyl or alkenyl, which is linear or branched, R2 is H, C1-C4 alkyl, which is linear or branched, R3 is —X—NH2, H or C1-C4 alkyl, which is linear or branched, and X is C2-C4 alkylene, which is linear or branched, or a salt of a protonated compound of formula I and an anion, to a prepared aqueous pulp of the ore and optionally one or more flotation auxiliaries to obtain an aqueous mixture. Furthermore, a method for manufacturing a specific group of compounds of formula I, i.e. compounds of formula 1-X wherein R1 is C9-C15 alkyl, which is linear or branched, R2 is H, R3 is —X—NH2 and X is C2-C4 alkylene, which is linear or branched, is disclosed.