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2 236 473

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IPC

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Application

2003112714/02, 2003-05-06

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Start date

2003-05-06

(22)

Actual filing date

2003-05-06

(45)

Published

2004-09-20

(72)

Inventor

Kotsar' M.L.Sinegribov V.A.Degtjareva L.V.Sutjagina E.I.Cheremnykh G.S.Agapitov V.A.Indyk S.I.Shtutsa M.G.

(73)

Holder

Gup Nauchno-Issledovatel'Skij Institut Khimicheskoj Tekhnologii"

COPPER-CONTAINING WASTE TREATMENT METHOD Russian patent published in 2004 - IPC

Abstract RU 2236473 C1

FIELD: waste treatment.

SUBSTANCE: method comprises dissolving copper by sulfuric acid aqueous solution in presence of ammonium nitrate, which is taken in amount 1-1.1 mole per 1 mole copper. Ammonium nitrate is added portionwise as copper dissolution proceeds.

EFFECT: increased reagent usage efficiency and reduced waste volume.

3 cl, 4 ex

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RU 2 236 473 C1

Authors

Kotsar' M.L.

Sinegribov V.A.

Degtjareva L.V.

Sutjagina E.I.

Cheremnykh G.S.

Agapitov V.A.

Indyk S.I.

Shtutsa M.G.

Dates

2004-09-20—Published

2003-05-06—Filed