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2 163 889

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IPC

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Application

2000104661/02, 2000-02-24

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Start date

2000-02-24

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Actual filing date

2000-02-24

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Published

2001-03-10

(72)

Inventor

Demakhin A.G.Kosenko S.I.Nalivajko A.I.Kholstov V.I.Kapashin V.P.Sevost'Janov V.P.Movchan P.G.Dem'Janov A.L.

(73)

Holder

Saratovskij Gosudarstvennyj Universitet Im. N.G. ChernyshevskogoDemakhin Anatolij Grigor'EvichNalivajko Aleksandr IvanovichKosenko Sergej Ivanovich

METHOD OF PREPARING ARSENIC OXIDE Russian patent published in 2001 - IPC

Abstract RU 2163889 C1

FIELD: chemical industry, more particularly preparation of chemical elements by processing arsenic-containing waste. SUBSTANCE: method comprises charging stock into reactor, roasting said stock at temperature of higher than 400 C and at pressure of less than 1 atm and subsequently condensing the desired product. Charging process is carried out continuously with dosimeter into heating zone. Temperature in heating zone is maintained within 400 to 850 C, and roasting operation is carried out at residual pressure of 150 to 500 mm Hg, and process is conducted continuously. EFFECT: more efficient preparation method. 2 cl, 1 dwg, 3 ex, 1 tbl

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RU 2 163 889 C1

Authors

Demakhin A.G.

Kosenko S.I.

Nalivajko A.I.

Kholstov V.I.

Kapashin V.P.

Sevost'Janov V.P.

Movchan P.G.

Dem'Janov A.L.

Dates

2001-03-10—Published

2000-02-24—Filed