METHOD OF EXTRACTION OF MOLYBDENUM TRIOXIDE FROM CINDER

nonferrous metallurgy; production of molybdenum trioxide. SUBSTANCE: method employs cinders formed at oxidizing roasting of molybdenum middlings with granulated quartz sand. Method includes sublimation of cinders at temperature of 1150 to 1200 C and residual pressure of 1 to 15 mm Hg during 1.5 to 4...

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Hauptverfasser:	KOZHEVNIKOV G.N, VODOP'JANOV A.G, GURIN VLADIMIR DMITRIEVICH, ARANOVICH VIKTOR L'VOVICH, MIRONENKO VIKTOR NIKOLAEVICH, RUDENKO BORIS IVANOVICH, KOVESHNIKOV A.V, SIGEDIN VITALIJ NIKOLAEVICH
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:	nonferrous metallurgy; production of molybdenum trioxide. SUBSTANCE: method employs cinders formed at oxidizing roasting of molybdenum middlings with granulated quartz sand. Method includes sublimation of cinders at temperature of 1150 to 1200 C and residual pressure of 1 to 15 mm Hg during 1.5 to 4.0 hours and condensation of vapor formed during this process. EFFECT: increase of degree of sublimation of molybdenum to 99.4%; enhanced purity of sublimated molybdenum trioxide; short technological cycle. 1 tbl, 3 ex