METHOD OF RECOVERING COPPER FROM AQUEOUS SOLUTIONS Russian patent published in 2002 - IPC

Abstract RU 2186135 C1

FIELD: hydrometallurgy and waste water treatment. SUBSTANCE: method involves, as reagent, CYANEX 272, whose active component is di(2,4,4- trimethylpentyl)phosphinic acid, copper is recovered by extraction at pH > 2, in particular at 3 ≤ pH <7, extraction pH being controlled for no longer than 1 h, whereas precipitation of copper from aqueous solution with reagent is performed at pH > 7. EFFECT: increased degree of copper recovery within a wide pH range. 3 cl, 1 tbl

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RU 2 186 135 C1

Authors

Voropanova L.A.

Titukhina V.N.

Krutskikh Ju.E.

Dates

2002-07-27—Published

2001-01-23—Filed