METHOD OF EXTRACTION OF PLATINUM AND PALLADIUM FROM ELECTROLYTE OF GOLD AFFINAGE

摘要

FIELD: hydrometallurgy of platinum metals and gold; extraction of platinum and palladium from used electrolyte of affinage gold production. SUBSTANCE: platinum metals are settled out of cesium chloride at a consumption of 1.8 to 2.0 g-at. of cesium per g-at. of the sum of platinum metals in the solution. Deposit of cesium chlormetallates is calcinated at 900 to 1300 C, sublimates of cesium chloride are absorbed by water and returned to the precipitation stage. Cesium tetrachloro-aurate can be used as cesium salt. EFFECT: improved process of extraction of platinum and palladium from used electrolyte, reuse of purified electrolyte in the stage of affinage, prevention of irrevocable loss of reagent-precipitator. 3 cl