METHOD OF EXTRACTION OF RHENIUM Russian patent published in 2004 - IPC

FIELD: hydrometallurgy. SUBSTANCE: proposed method includes sorption of rhenium by granulated polymer, de-sorption of rhenium ammonium solvent for obtaining rhenium-concentrated solutions. Used as sorbent is extracting polymer containing super-cross-linked polystyrene and extracting agent. Used as extracting agent is trialkylamine of the following formula: R₃N, where R are alkyl radicals (C₈-C₁₀). Granules of super-cross-linked polystyrene are impregnated by use of 0.1=40-% solution of trialkylamine of formula R₃N, where R is alky radicals (C₈-C₁₀) in organic diluent. EFFECT: high degree of extraction of rhenium from weak solutions; reduction of time required for process; low cost. 4 tbl, 2 ex 5