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(19)

(11)

2 748 195

(13)

(51)

IPC

C22B34/22(2006-01-01)

C01G31/00(2006-01-01)

C22B3/26(2006-01-01)

B01D11/04(2006-01-01)

(21) (22)

Application

2020134502, 2020-10-21

(24)

Start date

2020-10-21

(22)

Actual filing date

2020-10-21

(45)

Published

2021-05-20

(72)

Inventor

Kurbatova Lyudmila Dmitrievna

(73)

Holder

Federalnoe Gosudarstvennoe Byudzhetnoe Uchrezhdenie Nauki Institut Khimii Tverdogo Tela Uralskogo Otdeleniya Rossijskoj Akademii Nauk

VANADIUM EXTRACTION METHOD Russian patent published in 2021 - IPC C22B34/22 C01G31/00 C22B3/26 B01D11/04

Abstract RU 2748195 C1

FIELD: metallurgical industry.

SUBSTANCE: invention relates to the metallurgical industry, in particular to methods of vanadium extraction from production solutions, it can be used in vanadium production technology and analytical chemistry. The vanadium extraction is carried out by extracting vanadium from an aqueous solution with a compound of di-2-ethylhexylphosphoric acid in hexane. The Na-salt of di-2-ethylhexylphosphoric acid is used as a compound of di-2-ethylhexylphosphoric acid. The extraction is carried out at a pH of 2.0-4.5 and a volume ratio of the organic and aqueous phase of 1:5.

EFFECT: invention makes it possible to simplify the vanadium extraction from the solution to the organic phase due to eliminating the stage of adding sodium sulfate Na₂SO₄ and avoiding the need to control the narrow pH range at which the extraction is carried out, while maintaining a high degree of vanadium extraction to the organic phase, which corresponds to 99.9%.

1 cl, 3 ex

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RU 2 748 195 C1

Authors

Kurbatova Lyudmila Dmitrievna

Dates

2021-05-20—Published

2020-10-21—Filed