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2 219 262

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Application

2001121598/02, 2001-07-31

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Start date

2001-07-31

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Actual filing date

2001-07-31

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Published

2003-12-20

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Inventor

Smirnov P.P.Khodjukov B.P.Temerov S.A.Batsanov S.A.Gorevaja O.N.Plechkina S.I.

(73)

Holder

Smirnov Pavel PavlovichKhodjukov Boris PetrovichTemerov Sergej Anatol'EvichBatsanov Sergej AlekseevichGorevaja Ol'Ga NikolaevnaPlechkina Svetlana Ivanovna

METHOD OF TRIBUTYL PHOSPHATE EXTRACTION-MEDIATED SEPARATION OF PLATINUM, PALLADIUM, AND IRIDIUM FROM RHODIUM Russian patent published in 2003 - IPC

Abstract RU 2219262 C2

FIELD: precious metals technology. SUBSTANCE: method comprises oxidation of initial aqueous solution, extraction of platinum, palladium, and iridium with tributyl phosphate, and re-extraction. According to invention, initial solution, prior to be oxidized, is evaporated until content of rhodium achieves 60-100 g/l and reextraction is accomplished with hydrochloric acid solution containing 5-10 g/l HCl. EFFECT: enabled recovery of platinum group metals into target products and simplified recovery of platinum group metals from re-extract. 1 tbl, 2 ex

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RU 2 219 262 C2

Authors

Smirnov P.P.

Khodjukov B.P.

Temerov S.A.

Batsanov S.A.

Gorevaja O.N.

Plechkina S.I.

Dates

2003-12-20—Published

2001-07-31—Filed

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