Process for recovering minerals from non-sulfidic ores by flotation

摘要

PCT No. PCT/EP92/01120 Sec. 371 Date Nov. 29, 1993 Sec. 102(e) Date Nov. 29, 1993 PCT Filed May 20, 1992 PCT Pub. No. WO92/21443 PCT Pub. Date Dec. 10, 1992.Minerals can be recovered by flotation from non-sulfidic ores by using detergent mixtures containing: a) salts of sulfonation products of unsaturated fatty acids corresponding formula (I): R1C(O)-OH (I) in which R1CO is a linear or branched aliphatic acyl radical containing 12 to 24 carbon atoms and 1 to 5 double bonds, and b) salts of sulfonation products of unsaturated fatty acid glycerol esters corresponding to formula (II): <IMAGE>iphatic acyl radical containing 12 to 24 carbon atoms and 1 to 5 double bonds and R3C(O) and R4C(O) independently of one another represent a linear or branched aliphatic acyl radical containing 6 to 24 carbon atoms and 0 or 1 to 5 double bonds, and, optionally, other anionic and/or nonionic surfactants, as collectors.