METHOD OF METALLIC RADIOGENIC OSMIUM-187 ISOLATION FROM RHENIUM-CONTAINING POOR AND ULTRAPOOR ORES Russian patent published in 1995 - IPC

FIELD: metal isolation. SUBSTANCE: parental material is subjected for alkaline melting. Prepared melt is cooled and prepared osmium sulfide is treated with oxidizing mixture at simultaneous ultrasonic field application. Formed osmium oxide is captured with sulfide-alkaline solution, and prepared osmium sulfide is reduced to metal. Method is used for isolation of metallic radiogenic osmium-187. EFFECT: improved method of osmium isolation. 2 cl