FLOTATION REAGENT FOR FROTH FLOTATION OF SULFIDE NONFERROUS METAL ORES Russian patent published in 2003 - IPC

FIELD: mineral dressing. SUBSTANCE: reagent for froth flotation of sulfide polymetallic ores, in particular copper- molybdenum ores, is based on organic sulfide (20-80%) and thiosulfate (80-20%), said sulfide being an isomer mixture of alkenyl t-dodecyl sulfide obtained from low-molecular propylene oligomers (chiefly tetramers) and hydrogen sulfide followed by reaction of resulting mercaptan (in particular t-dodecyl mercaptan) with alkenyl chloride. EFFECT: increased recovery of molybdenum and copper into collective concentrate and increased selectivity of flotation reagent to molybdenum. 2 cl, 4 tbl