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1 589 858

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Application

4465628/25, 1988-07-21

(22)

Actual filing date

1988-07-21

(45)

Published

1994-07-30

(72)

Inventor

Lazarev L.N.Dzekun E.G.Popik V.P.Prokopchuk Ju.Z.Babain V.A.Smirnov I.V.Petrov K.A.

METHOD FOR ISOLATING METALS OF ACID LIQUID RADIOACTIVE WASTES AND EXTRACTION MIXTURE FOR ITS REALIZATION Russian patent published in 1994 - IPC

Abstract SU 1589858 A1

FIELD: hydrometallurgy. SUBSTANCE: cesium and/or strontium and/or rare-earth elements and actinide elements are extracted of liquid radioactive wastes which contains 0.5-3 M nitric acid. Then phases are separated, rare-earth elements, actinide elements and strontium are reextracted. The process is followed by reextraction of cesium with the help of 3-6 M nitric acid solution. Extraction mixture contains chlorinated dicarbollide of cobalt and phosphorous-containing polyethylene glycol ( their concentrations being 0.05-3 M and 0.02-0.2 M respectively ) in nitroaromatic diluent. EFFECT: increases extraction degree of rare-earth and actinide elements, increases capacity of organic phase in relation to extracted elements, decreases their concentration in solution. 4 cl, 4 tbl

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SU 1 589 858 A1

Authors

Lazarev L.N.

Dzekun E.G.

Popik V.P.

Prokopchuk Ju.Z.

Babain V.A.

Smirnov I.V.

Petrov K.A.

Dates

1994-07-30—Published

1988-07-21—Filed

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