METHOD OF FLOTATION CONCENTRATION OF RARE-METAL ORES Russian patent published in 2015 - IPC B03D1/02 B03D101/02 

FIELD: mining.

SUBSTANCE: method of floatation concentration of rare-metal ores and products includes pulp processing by combination of collecting agents, one of which is organic phosphorus compound, and flotation of minerals. The pulp is processed by the combination of collecting agents of class of fatty acids and organic phosphorus compounds with the common formula [RO(C₂H₄O)_m]₂P(O)OM, where R - C_4-20 alkyl, alkyl(C_8-10)phenyl; M-H, K, HN(CH₂CH₂OH)₃; m = 4-12. Flotation is performed with extraction of rare-metal minerals into collective concentrate and subsequent floatation selection of the collective concentrate with separation of niobic and zirconium concentrates. Fatty acids are oleic acid or fatty acids of tall oil. Floatation selection is performed without using any collecting agents.

EFFECT: improvement of efficiency of floatation concentration.

4 cl, 1 dwg, 4 tbl, 2 ex