BRANCHED ALKYL ETHER AMINES AS IRON ORE FLOTATION AIDS

摘要

This invention relates to the use of primary aliphatic ether amines as silica collectors in the concentration of minerals by the froth flotation process. More specifically, it relates to the use of mixtures of primary methyl branched aliphatic ether amines and the partially neutralized salts thereof as flotation reagents. In further aspect, it relates to the use of mixtures of 3-iso-octoxypropyl monoamine and 3-isodecoxypropyl monoamine or of 3-isononyloxypropyl monoamine and its ethoxylated and propoxylated derivatives and/or the partially neutralized acetate salts thereof as collectors for silica in the beneficiation of oxidized taconite ores.