METHOD OF RHENIUM AND PLATINUM CONCENTRATES RECEIVING FROM ITS CINTAINING ACID LIQUORS Russian patent published in 2009 - IPC C22B11/00 C22B61/00 C22B3/44 

FIELD: metallurgy.

SUBSTANCE: invention relates to hydrometallurgy of rare and noble metals, particularly to methods of receiving of these metals concentrates from its containing acid liquors. Method includes treatment of solution by complex former, separation of the received platinum complex and compound of rhenium and platinum from liquid phase. Then it is implemented thermal treatment of complex and compounds with receiving of concentrate, containing rhenium and predominately platinum. Into the rest liquid phase it is introduced sulfur-bearing reagent and is separated received rhenium sulphide. It is subject to recovery in gaseous medium with receiving of rhenium concentrate. Additionally treatment of initial solution by complex former is implemented at correlation of mass of complex former and dissolved platinum from 1 up to 8 for sorption of platinum. Introduction of sulfur-bearing reagent into the rest liquid phase is implemented at mass correlation of sulfur-bearing reagent and dissolved rhenium from 21 up to 72.

EFFECT: it is increased extraction ratio of rhenium and platinum into concentrates.

6 cl, 13 ex