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(19)

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2 650 372

(13)

(51)

IPC

C25C1/20(2006-01-01)

C25C7/02(2006-01-01)

C22B11/00(2006-01-01)

(21) (22)

Application

2017123369, 2017-07-03

(24)

Start date

2017-07-03

(22)

Actual filing date

2017-07-03

(45)

Published

2018-04-11

(72)

Inventor

Sonkin Vladimir SemenovichMuraleev Adil RinatovichSidin Evgenij GennadevichMaganov Dmitrij DmitrievichGelman Dmitrij Evgenevich

(73)

Holder

Aktsionernoe Obshchestvo Zavod Tsvetnykh Metallov"

METHOD OF EXTRACTION OF SILVER FROM THE ACID SOLUTION OF SILVER NITRATE BY METHOD OF ELECTROWINNING Russian patent published in 2018 - IPC C25C1/20 C25C7/02 C22B11/00

Abstract RU 2650372 C1

FIELD: metallurgy.

SUBSTANCE: invention relates to the field of metallurgy of noble metals, in particular to the extraction of silver from acid solutions of silver nitrate by electrowinning using insoluble heat-treated titanium anodes. Before the electrowinning process, titanium anodes are prepared by calcination in an air medium at a temperature of 450÷500 °C for the formation on the surface of a titanium anode oxide-nitride film with a thickness of 30÷50 microns with protective properties. Electrowinning process is carried out at a voltage of 2÷3 V, current density 210÷240 A/m².

EFFECT: method allows to extract silver of high quality efficiently.

1 cl, 3 ex

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RU 2 650 372 C1

Authors

Sonkin Vladimir Semenovich

Muraleev Adil Rinatovich

Sidin Evgenij Gennadevich

Maganov Dmitrij Dmitrievich

Gelman Dmitrij Evgenevich

Dates

2018-04-11—Published

2017-07-03—Filed