Alkyloxyalkaneamines useful as cationic froth flotation...

Details Alkyloxyalkaneamines useful as cationic froth flotation... Alkyloxyalkaneamines useful as cationic froth flotation...

B - Operations, Transporting

03

D

B03D 1/004 (2006.01) B03D 1/008 (2006.01) B03D 1/01 (2006.01) B03D 1/02 (2006.01)

Patent

CA 2145559

A process of separating at least one mineral, e.g. silica, from an aqueous medium, e.g. one containing iron ore, by froth flotation using cationic alkyloxyalkaneamine collectors free of acrylonitrile is described. Alkyloxyalkaneamines free of acrylonitrile may be made by reacting an alcohol with an alkenenitrile having at least 4 to 13 carbon atoms. This process produces branching on the third carbon from the nitrogen of the resulting compound, e.g. 3-hexoxypentaneamine. In addition to the absence of acrylonitrile, the alkyloxyalkaneamines give better selectivity than some conventional etheramines.

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