Basf Se Corporation

Stefanov Nedko Drebov

Martin Ernst

Alexander Panchenko

Alexej Michailovski

Hannes Ferdinand Zipfel

Sylvia Von Krog

Tamara Kuelzer

Gabriela Budemberg

Long Phan

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 Ris C-Calkyl or alkenyl, which is linear or branched, Ris H, C-Calkyl, which is linear or branched, Ris —X—NH, H or C-Calkyl, which is linear or branched, and X is C-Calkylene, 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 Ris C-Calkyl, which is linear or branched, Ris H, Ris —X—NHand X is C-Calkylene, which is linear or branched, is disclosed.

Method for flotation of a silicate-containing iron ore with a cationic collector

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Ludwigshafen, Germany

Stefanov Nedko Drebov