Collector compositions containing a n-acylated amino acid and process to treat non-sulfidic ores

Collector composition suitable for treating non-sulfidic ores said composition comprising:

• (i) from about 1 to about 50 wt % of an N-acylated amino acid or salt thereof of the structural formula R1-CO—NX—CYH—(CH2)m-COOM
• (ii) from about 10 to about 80 wt % of an alcohol alkoxylate of the formula R2-(AO)n wherein R1 is an alkyl or alkenyl group of about 7 to about 21 carbon atoms, X is a hydrogen atom or methyl group, Y is a hydrogen atom, a C1-C4 alkyl, a C1-C4 hydroxylalkyl, a C1-C4 carboxyalkyl, or a C1-C4 aminoalkyl group, m is 0 or 1, M is a proton, an alkalimetal cation, or a quaternary ammonium cation, R2 is an alkyl group of about 6 to about 20 carbon atoms, each AO is independently ethyleneoxy or propyleneoxy, provided that at least part of AO is ethyleneoxy, and n is greater than about 2 and up to about 25, the wt % being based on the total weight of the composition.