FLOTATION REAGENTS AND FLOTATION PROCESSES UTILIZING SAME Russian patent published in 2017 - IPC B03D1/16 B03D1/02 

FIELD: chemistry.

SUBSTANCE: present invention relates to floatation reagents and a method of froth flotation for improved extraction of valuable sulphide minerals and precious metals from ores, silicate-containing Mg, slime forming minerals and/or clay. Method of enhancing recovery of a value sulphide and/or precious-metal mineral from an ore, containing said mineral and/or precious-metal mineral and one or more of Mg silicate, slime forming minerals and/or clay comprises adding to one or more stage of froth flotation process performed under acidic conditions, a froth phase modifier. Froth phase modifier is a polymer, including one or more functional groups, selected from a group, consisting of sulphonate groups or corresponding acids, phosphate groups or corresponding acids, phosphonic groups or corresponding acids, phosphinate groups or corresponding acids, hydroxamate groups or corresponding acids, silane groups and silanol groups.

EFFECT: technical result is higher extraction of valuable sulphide minerals and/or precious-metal minerals from said ore.

15 cl, 12 tbl, 65 ex