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RU

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2 797 800

(13)

C1

(51)

IPC

C25C1/20(2006-01-01)

C22B11/00(2006-01-01)

(21) (22)

Application

2022111307, 2022-04-26

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Start date

2022-04-26

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Actual filing date

2022-04-26

(45)

Published

2023-06-08

(72)

Inventor

Riabukhin Egor AlekseevichErmakov Aleksandr VladimirovichLobanov Vladimir GennadevichSkomorokhov Vladimir AleksandrovichBorisenkov Anatolii ValerevichRulev Roman Sergeevich

(73)

Holder

Aktsionernoe Obshchestvo Innovatsionnye Tekhnologii"

RHODIUM REFINING METHOD Russian patent published in 2023 - IPC C25C1/20 C22B11/00 

Abstract RU 2797800 C1

FIELD: hydrometallurgy.

SUBSTANCE: invention can be used in the refining of rhodium, in particular in the precipitation of rhodium from hydrochloric acid solutions containing impurities. Rhodium is deposited from hydrochloric acid solutions by reduction at the electrolyser cathode and the resulting rhodium powder is purified from impurities by thermochlorination. The deposition is carried out at a current density of 700-1200 A/m2, and in the process of deposition, the polarity of the electrodes is periodically changed. The duration of direct polarity is 10-100 s, and the duration of reverse polarity is 5-10 s.

EFFECT: invention makes it possible to obtain metallic rhodium of increased purity.

1 cl, 1 tbl

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RU 2 797 800 C1

Authors

Riabukhin Egor Alekseevich

Ermakov Aleksandr Vladimirovich

Lobanov Vladimir Gennadevich

Skomorokhov Vladimir Aleksandrovich

Borisenkov Anatolii Valerevich

Rulev Roman Sergeevich

Dates

2023-06-08—Published

2022-04-26—Filed

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