METHOD OF ELECTROCHEMICAL PROCESSING REFRACTORY NICKEL ALLOY WASTES BEARING RHENIUM, TUNGSTEN, TANTALUM AND OTHER VALUABLE METALS

摘要

FIELD: metallurgy.;SUBSTANCE: proposed method comprises anodic oxidation of melt in acid electrolyte at application of electric current. Note here that said anodic oxidation is carried out in acid electrolyte containing 150 g/l of H₂SO₄+50 g/l HCl. Applied direct electric current features density of 250-300 mA/cm². Application of said current is conducted at 20-40°C.;EFFECT: notable increase in anodic oxidation rate.;3 tbl, 2 ex