METHOD OF EXTRACTION OF FINELY-DISPERSED APATITE Russian patent published in 2003 - IPC

FIELD: concentration of minerals; processing apatite-containing ores; treatment of sewage at concentration plants. SUBSTANCE: proposed method includes introduction of inorganic coagulants followed by coagulation of drain of thickening agents obtained after thickening of floatation concentrate at delivery of inorganic coagulant and floatation of flocculi thus formed. Floatation of flocculi is performed in activated aqueous dispersions of air prepared in presence of surfactants of heteropolar structure at aeration of gas phase by water jets. EFFECT: reduced losses of apatite concentrate. 2 cl, 4 dwg