MINERAL PROCESSING USING POLYMERIC MATERIAL INCLUDING MOIETY SELECTIVELY BINDING TO MINERAL Russian patent published in 2017 - IPC B03D1/12 B03D1/16 B03D1/02 C08F226/04 

FIELD: chemistry.

SUBSTANCE: invention relates to processing a mineral mixture, which comprises first preparing a mineral mixture, which contains a metal-containing mineral and one or more unwanted gangue minerals. Method then comprises contacting mixture of minerals and polymeric material that includes a mineral binding moiety which selectively binds to metal-containing mineral. Further, method comprises separating the gangue minerals and polymeric material which has metal-containing mineral bound thereto. All steps of method are carried out as part of a flotation process. Polymeric material contains particles, configured to ensure their surfacing. Polymeric material contains a polymer formed by polymerisation of precursor polymer of formula (I), wherein R¹ represents i) CR^a, where R^a is hydrogen or alkyl, containing from 1 to 20 carbon atoms; ii) group N⁺R¹³ (Z^m)_1/m, S(O)_pR¹⁴ or SiR¹⁵, where R¹³ represents hydrogen, halogen, nitro or hydrocarbyl, containing from 1 to 20 carbon atoms, optionally having as substitutes or including its structure functional groups, R¹⁴ and R¹⁵ are independently selected from hydrogen or hydrocarbyl, containing from 1 to 20 carbon atoms, Z is an anion having charge m, and p equals 0, 1 or 2, iii) C(O)N, C(S)N, S(O)₂N, C(O)ON, CH₂ON or CH=CHR^cN, where R^c represents an electron-acceptor group, or iv) OC(O)CH, C(O)OCH or S(O)₂CH; where R¹² is selected from hydrogen, halogen, nitro, hydrocarbyl, containing from 1 to 20 carbon atoms, R² is selected (CR⁷R⁸)_n or group CR⁹R¹⁰, CR⁷R⁸CR⁹R¹⁰ or CR⁹R¹⁰CR⁷R⁸, where n equals 0, 1 or 2, R⁷ and R⁸ are independently selected from hydrogen or alkyl containing 1 to 20 carbon atoms, and one of R⁹ or R¹⁰ represents hydrogen, and other is an electron-acceptor group, or R⁹ and R¹⁰ together form an electron-acceptor group; R⁴ is selected from CH or CR¹¹, where CR¹¹ is an electron-acceptor group, dotted lines denote presence or absence of a bond, X¹ represents a group CX²X³, where dotted line-denoted bond, to which said group is attached, is absent, and group CX², where dotted line-denoted bond, to which said group is attached, is present, X², X³ are independently selected from hydrogen or fluorine.

EFFECT: invention enables efficient separation of metal-containing mineral from unwanted gangue minerals.

42 cl, 21 ex