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2 124 589

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IPC

(21) (22)

Application

96122935/02, 1996-12-03

(22)

Actual filing date

1996-12-03

(45)

Published

1999-01-10

(72)

Inventor

Agapitov V.A.Agadullina E.A.Balueva N.S.Kunaev N.A.Krasnoshchekov V.I.Chekanov Ju.A.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Mekhanicheskij Zavod"

METHOD OF PROCESSING OF SPENT ACID ELECTROLYTES CARRYING ZIRCONIUM AND COPPER Russian patent published in 1999 - IPC

Abstract RU 2124589 C1

FIELD: processing of spent electrolytes used in deposition of copper coats on articles made of zirconium and its alloys, mechanical engineering and other branches of technology. SUBSTANCE: spent electrolytes containing copper vitriol, hydrofluoric acid and zirconium are treated with compositions of sodium ( sodium fluoride sulfate or their mixture ) with weight ratio Na:Zr as 1.15-1.19 followed by curing in the course of 2 h. Derived crystals are separated with subsequent correction of obtained solution. EFFECT: increased percentage of zirconium extracted from spent electrolytes and prevention of pollution of environment. 1 tbl

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RU 2 124 589 C1

Authors

Agapitov V.A.

Agadullina E.A.

Balueva N.S.

Kunaev N.A.

Krasnoshchekov V.I.

Chekanov Ju.A.

Dates

1999-01-10—Published

1996-12-03—Filed