Alkyloxyalkaneamines useful as cationic froth flotation collecto

Details Alkyloxyalkaneamines useful as cationic froth flotation collecto Alkyloxyalkaneamines useful as cationic froth flotation collecto

1994-04-04

1996-07-30

Lithgow, Thomas M.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

252 61, B03D 102, B03D 101

Patent

active

055403379

ABSTRACT:
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.

REFERENCES:
patent: 3076819 (1963-02-01), Heise
patent: 3363758 (1968-01-01), Cronberg, et al.
patent: 3744629 (1973-07-01), Baarson et al.
patent: 4319987 (1982-03-01), Shaw et al.

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