METHOD OF COMPACTING AND PURIFYING AMORPHOUS ARSENIC

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...

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Bibliographische Detailangaben
Hauptverfasser:	ZORIN A.D, STEPANOVA L.V, SIDOROV JU.V, ANASTASOV A.D, KARATAEV E.N, KAPASHIN V.P, KHOLSTOV V.I, SIDNEV V.I, KOSJAK A.M
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	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.