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2 170 279

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Application

99110546/02, 1999-05-20

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Start date

1999-05-20

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Actual filing date

1999-05-20

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Published

2001-07-10

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Inventor

Zorin A.D.Karataev E.N.Stepanova L.V.Sidorov Ju.V.Sidnev V.I.Kosjak A.M.Kapashin V.P.Kholstov V.I.Anastasov A.D.

(73)

Holder

Nauchno-Issledovatel'Skij Institut Khimii Pri Nizhegorodskom Gosudarstvennom Universitete Im. N.I. Lobachevskogo

METHOD OF COMPACTING AND PURIFYING AMORPHOUS ARSENIC Russian patent published in 2001 - IPC

Abstract RU 2170279 C2

FIELD: powder metallurgy, more particularly destruction of chemical weapons. SUBSTANCE: method comprises crystallization which is carried out by pressing amorphous arsenic into block at pressure of 130-2000 ksf/sq.cm using step-by-step heating thereof from room temperature to 500 C, keeping it at 300- 350 C for 15-30 minutes in first stage, and 450-500 C for 15-30; minutes, in second stage. EFFECT: more efficient and simpler process of preparing compact crystalline arsenic.

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RU 2 170 279 C2

Authors

Zorin A.D.

Karataev E.N.

Stepanova L.V.

Sidorov Ju.V.

Sidnev V.I.

Kosjak A.M.

Kapashin V.P.

Kholstov V.I.

Anastasov A.D.

Dates

2001-07-10—Published

1999-05-20—Filed

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