PROCEDURE FOR EXTRACTING SALTS OF ALKALI METALS AND SILVER OUT OF WATER SOLUTIONS Russian patent published in 2010 - IPC C22B26/10 C22B11/00 C22B3/26 B82B1/00 

FIELD: metallurgy.

SUBSTANCE: procedure consists in extracting salts of alkali metals and silver by picrate extraction at intensive mixing. As extractants for extraction there are used modified morpholide and pyrrolidide fragments by lower ring of stereoisomers n-tert-butylthiacalix [4]arene-5,11,17,23-tetra-tert-butyl-25,26,27,28-tetrakis[(N-pyro-lydyl-carbonyl)-metoxi]- 2,8,14,20-tetrathyacalix [4] arene and 5,11,17,23 - tetra-tert-butyl-25,26,27,28-tetraki [(N-morpholidocarbonyl)-metoxi]-2,8,14,20-tetrathyacalix [4] arene) at their interaction with cations of alkali metals and silver; there are created nano-dimension aggregates of 84 and 153 nm of composition A_xB_y (AB_n, n=x/y), where A is cation of metal, B is molecule of extractant, n is stoichiometry of complex, x and y is number of particles of metal and extractant correspondingly.

EFFECT: increased selectiveness of extraction of cations of lithium and silver and increased extracting properties of derivatives of compound by means of creating dissolved in organic solvent nano-dimension aggregates containing cations of univalent metals.

6 dwg, 3 ex