METHOD OF PROCESSING URANIUM-CONTAMINATED METALLIC MOLYBDENUM WASTE

FIELD: precious elements-containing waste processing. ^ SUBSTANCE: invention relates to technology of processing wastes containing precious elements or presenting environmental danger and can be employed as indicated above. Method comprises oxidation of uranium-contaminated metallic molybdenum waste...

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Hauptverfasser:	SHEMJAKINA IRINA VLADIMIROVNA, MAKAROV FEDOR VIKTOROVICH, GUZEEV VITALIJ VASIL'EVICH, ABROS'KIN IGOR' EVGEN'EVICH, BUJMOV SERGEJ ANATOL'EVICH, VARYGIN VITALIJ NIKOLAEVICH, MUKHIN VIKTOR VASIL'EVICH, CHAPAEV IGOR' GENNAD'EVICH, GUZEEVA TAT'JANA IVANOVNA
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	FIELD: precious elements-containing waste processing. ^ SUBSTANCE: invention relates to technology of processing wastes containing precious elements or presenting environmental danger and can be employed as indicated above. Method comprises oxidation of uranium-contaminated metallic molybdenum waste with either pure oxygen or air oxygen at 750-800°C and removal of uranium oxides by via sublimation at temperature 700-800°C, residual pressure 104-105 Pa and linear air or inert gas stream velocity over substance being sublimated 0.1-1 m/min. Resulting molybdenum trioxide is then reduced into metal. ^ EFFECT: reduced oxidation and sublimation time, reduced power consumption, and simplified sublimation operation. ^ 2 tbl, 4 ex