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2 225 891

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Application

2002114080/02, 2002-05-30

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Start date

2002-05-30

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Actual filing date

2002-05-30

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Published

2004-03-20

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Inventor

Voropanova L.A.Gagieva F.A.Gagieva Z.A.

(73)

Holder

Voropanova Lidija Alekseevna

METHOD OF SORPTION OF TUNGSTEN(VI) FROM AQUEOUS SOLUTIONS Russian patent published in 2004 - IPC

Abstract RU 2225891 C2

FIELD: valuable metals' recovery methods. SUBSTANCE: invention relates to sorbent-assistant substance recovery area and can be applied in nonferrous and ferrous metallurgy as well as for cleaning trade and household effluents. Sorption is effected on AM-2b anionite containing exchange groups -CH2-N(CH3)2,-CH2-N(CH3)3 at pH ≤ 7 and alkaline sorbent pretreatment at pH ≤ 4 and pH > 5 and acidic sorbent pretreatment at pH ≥ 5, followed by water sorbent pretreatment. EFFECT: accelerated procedure and enhanced method efficiency. 4 cl, 4 dwg, 3 ex

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RU 2 225 891 C2

Authors

Voropanova L.A.

Gagieva F.A.

Gagieva Z.A.

Dates

2004-03-20—Published

2002-05-30—Filed

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