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

US12275019B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Alexej Michailovski · Ludwigshafen, DE
• Alexander Panchenko · Ludwigshafen, DE
• Hannes Ferdinand Zipfel · Ludwigshafen, DE
• Martin Ernst · Ludwigshafen am Rhein, DE
• Gabriela Budemberg · Ludwigshafen, DE
• Stefanov Nedko Drebov · Ludwigshafen, DE
• Sylvia von Krog · Ludwigshafen, DE
• Tamara Kuelzer · Ludwigshafen, DE
• Long Phan · Ludwigshafen, DE

Key dates

• Filing date: Apr 27, 2020
• Grant date: Apr 15, 2025
• Expiry date: Jan 11, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C213/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

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.