NANOTECHNOLOGICAL PROCESS OF EXTRACTING RHENIUM FROM ROCKS AND ORE OF BLACK-SHALE FORMATIONS AND PRODUCTS OF THEIR PROCESSING Russian patent published in 2012 - IPC C01G47/00 B82B3/00 C22B61/00 

FIELD: process engineering.

SUBSTANCE: invention relates to mining and may be used in applied geochemistry, particularly, to extraction of rhenium. Proposed process includes making colloidal salt solution from specimens of black-shale formations and/or products of their processing, to be minced to grain size not exceeding 0.080 mm, flooding it with water solution heated to boiling point and made up of polyvinyl alcohol with concentration in water solution of 0.05% taken at the ratio of 15:1, mixing prepared suspension, curing it at room temperature for at least 24 h, filtering said suspension to particle size of at least 1200 nm, at rhenium content of at least 0.0001 mg/kg, and extracting rhenium by evaporation to dry residue of colloidal salt solution.

EFFECT: higher accuracy, validity and reliability.

6 tbl, 6 ex