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2 026 390

(13)

C1

(51)

IPC

(21) (22)

Application

5019784/02, 1991-12-27

(22)

Actual filing date

1991-12-27

(45)

Published

1995-01-09

(72)

Inventor

Denzanov Gennadij Aleksandrovich[Ua]

(73)

Holder

Vinnitskij Politekhnicheskij Institut

METHOD OF COPPER UTILIZATION FROM SPENT ETCHING LIQUIDS Russian patent published in 1995 - IPC

Abstract RU 2026390 C1

FIELD: metallurgy. SUBSTANCE: spent etching liquids were subjected for neutralization with alkali up to 12.0-12.5, copper oxide suspension forming after neutralization is dried and calcined at 1250-1400 C for 0.5-1.0 h. EFFECT: improved method of copper utilization. 2 tbl

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RU 2 026 390 C1

Authors

Denzanov Gennadij Aleksandrovich[Ua]

Dates

1995-01-09—Published

1991-12-27—Filed

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