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2 009 229

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C1

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IPC

(21) (22)

Application

5029611/02, 1992-01-16

(22)

Actual filing date

1992-01-16

(45)

Published

1994-03-15

(72)

Inventor

Popik V.P.Zamanskij V.Ja.Pavilajnen Ju.V.Trubitsyn M.B.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie Institut" Im.V.G.Khlopina

METHOD FOR EXTRACTION OF METALLIC ARSENIC FROM WATER SOLUTIONS Russian patent published in 1994 - IPC

Abstract RU 2009229 C1

FIELD: metallurgy. SUBSTANCE: trivalent arsenic is converted to pentavalent state prior to reduction to elemental state. Reduction process is carried out in an arsenic containing solution warmed up to 80-90 C at pH = 3-5. The solution contains per 1 l: 0.5-10 g of arsenic, 0.1-0.5 g of Cu in form of copper sulfate; as reducing agent is used metallic zinc in 1.5-time excess relative to arsenic. EFFECT: improved efficiency of extraction. 1 tbl

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RU 2 009 229 C1

Authors

Popik V.P.

Zamanskij V.Ja.

Pavilajnen Ju.V.

Trubitsyn M.B.

Dates

1994-03-15—Published

1992-01-16—Filed

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