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2 066 698

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C1

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IPC

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Application

93031214/02, 1993-06-22

(22)

Actual filing date

1993-06-22

(45)

Published

1996-09-20

(72)

Inventor

Vodolazov L.I.Komarov A.V.Shatalov V.V.Solodjannikov A.A.Ushkova T.N.Serebrjakov I.S.Galkina Z.I.

(73)

Holder

Vserossijskij Nauchno-Issledovatel'Skij Institut Khimicheskoj Tekhnologii

METHOD OF RECOVERING GOLD AND SILVER FROM WASTE OF ELECTRONIC AND ELECTROTECHNICAL INDUSTRY BRANCHES Russian patent published in 1996 - IPC

Abstract RU 2066698 C1

FIELD: recovery of gold and silver from electronic boards, electronic instrument scrap materials, waste of radiotechnical, electronic and timepiece industry branches. SUBSTANCE: method comprises of treating by nitric acid at temperature 50-70 C electronic boards and scrap material of electronic instruments; disintegrating waste and processing it by nitric acid whose concentration has been taken up to initial one at 90 C over two hours and then at boiling temperature. EFFECT: enhanced efficiency of process. 1 cl

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RU 2 066 698 C1

Authors

Vodolazov L.I.

Komarov A.V.

Shatalov V.V.

Solodjannikov A.A.

Ushkova T.N.

Serebrjakov I.S.

Galkina Z.I.

Dates

1996-09-20—Published

1993-06-22—Filed

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