Abstract: Collecting properties and the foam state of alkyl polyamines ether series collector GE-601，GE-610，GE-609，GE-609 and lauryl amine were compared through test. The results indicated GE-601 was the ideal cationic collector. Under the condition of no adding other reagent, handle the rough concentrate of Jianshan iron ore with iron grade 64.53% by one rougher flotation and third scavenging completed circuit flotation flow, excellent quality iron ore concentrate with iron grade 69.41%, recovery rate 98.42% obtained.

Key words: Cationic collector, Reverse flotation, Foam, Dressing target