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2 463 370

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IPC

C22B59/00(2006-01-01)

C01F17/00(2006-01-01)

B03D1/02(2006-01-01)

(21) (22)

Application

2011116185/02, 2011-04-22

(24)

Start date

2011-04-22

(22)

Actual filing date

2011-04-22

(45)

Published

2012-10-10

(72)

Inventor

Lobacheva Ol'Ga LeonidovnaChirkst Dmitrij EhduardovichDzhevaga Natal'Ja Vladimirovna

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Gornyj Institut Imeni G.V. Plekhanova Universitet)"

METHOD TO EXTRACT HOLMIUM (III) CATIONS FROM NITRATE SOLUTIONS Russian patent published in 2012 - IPC C22B59/00 C01F17/00 B03D1/02

Abstract RU 2463370 C1

FIELD: metallurgy.

SUBSTANCE: method to extract holmium (III) cations from nitrate solutions includes ion floatation using an anion-type surfactant as a collector. Besides, the collector is dodecyl sodium sulfate in a concentration corresponding to stoichiometry of the following reaction: Ho⁺³+3C₁₂H₂₅OSO₃Na=Ho[C₁₂H₂₅OSO₃]₃+3Na⁺, where Ho⁺³ - holmium cation, C₁₂H₂₅OSO₃Na - sodium dodecyl sulfate. Moreover, ion floatation is carried out at pH=6.6-7.4, which makes it possible to achieve 90% extraction of holmium from aqueous solutions of its salts.

EFFECT: higher extent of holmium extraction.

1 dwg, 1 tbl, 1 ex

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RU 2 463 370 C1

Authors

Lobacheva Ol'Ga Leonidovna

Chirkst Dmitrij Ehduardovich

Dzhevaga Natal'Ja Vladimirovna

Dates

2012-10-10—Published

2011-04-22—Filed