METHOD OF EXTRACTING OF NOBLE METALS FROM WASTES OF RADIOELECTRONIC INDUSTRY

摘要

FIELD: metallurgy.SUBSTANCE: method includes melting of the radioelectronic wastes in the deoxidizing atmosphere upon presence of silicon dioxide with production of copper-nickel anode containing silicon in amount from 2.5 to 5%. The produced electrode containing lead admixtures from 1.3 to 2.4% is subjected to electrolytic dissolution using the nickel sulphuric acid electrolyte with production of the sludge with noble metals.EFFECT: reduced losses of noble metals in sludge, increased rate of dissolution due to reduced passivation of the anodes and reduced power consumption.1 tbl, 3 ex