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2 484 159

(13)

(51)

IPC

C22B23/00(2006-01-01)

C22B61/00(2006-01-01)

C22B7/00(2006-01-01)

C25C1/08(2006-01-01)

C25C1/22(2006-01-01)

(21) (22)

Application

2012114252/02, 2012-04-12

(24)

Start date

2012-04-12

(22)

Actual filing date

2012-04-12

(45)

Published

2013-06-10

(72)

Inventor

Levin Aleksandr MikhajlovichPalant Aleksej AleksandrovichBrjukvin Vladimir AleksandrovichLebedev Aleksandr DenisovichPalant Leonid AlekseevichLevchuk Oksana Mikhajlovna

(73)

Holder

Federal'Noe Gosudarstvennoe Bjudzhetnoe Uchrezhdenie Nauki Institut Metallurgii I Materialovedenija Im. A.A. Bajkova Rossijskoj Akademii Nauk

METHOD OF ELECTROCHEMICAL PROCESSING REFRACTORY NICKEL ALLOY WASTES BEARING RHENIUM, TUNGSTEN, TANTALUM AND OTHER VALUABLE METALS Russian patent published in 2013 - IPC C22B23/00 C22B61/00 C22B7/00 C25C1/08 C25C1/22

Abstract RU 2484159 C1

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

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RU 2 484 159 C1

Authors

Levin Aleksandr Mikhajlovich

Palant Aleksej Aleksandrovich

Brjukvin Vladimir Aleksandrovich

Lebedev Aleksandr Denisovich

Palant Leonid Alekseevich

Levchuk Oksana Mikhajlovna

Dates

2013-06-10—Published

2012-04-12—Filed