EXTRAGENT BASED ON PARTIALLY FLUORINATED TRIALKYLAMINE AND METHOD FOR EXTRACTION OF METALS AND ACIDS FROM WATER-SALT SOLUTIONS Russian patent published in 2018 - IPC C22B3/28 C22B11/00 

FIELD: chemistry.

SUBSTANCE: invention relates to the extraction of ions in the form of anions of acids, in the form of ions of precious metals and other elements using fluorinated alkylamines. Technical result is achieved by using as an extractant amine of the general structural formula:

,

where R¹ – alkyl hydrocarbon substituents of normal or branched structure with the number of carbon atoms from 2 to 8; R² – alkyl hydrocarbon substituents of normal or branched structure with the number of carbon atoms from 2 to 8; X – CF₃- or C_nF_2nH-, where n=1–10, or its solutions in organic diluents, which additionally contain a reagent, which is an oxime of the general formula:

,

where R₁ – C₉H₁₉-C₁₂H₂₅; R₂ – H- or CH₃-, with subsequent reextraction.

EFFECT: technical result of the invention is to increase the degree of extraction and distribution coefficients of noble metals.

7 cl, 3 dwg, 14 tbl