Process for thermal dissociation of molybdenum disulfide

A process for preparing metallic molybdenum of relatively high purity by agglomerating a finely-particulated molybdenite concentrate consisting predominantly of molybdenum disulfide into a plurality of briquettes and heating the briquettes at an elevated temperature under vacuum for a period of time...

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Bibliographische Detailangaben
Hauptverfasser:	BUKER, DONALD O
Format:	Patent
Sprache:	eng
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:	A process for preparing metallic molybdenum of relatively high purity by agglomerating a finely-particulated molybdenite concentrate consisting predominantly of molybdenum disulfide into a plurality of briquettes and heating the briquettes at an elevated temperature under vacuum for a period of time sufficient to effect a dissociation of the molybdenum disulfide and an extraction of the volatile constituents in the briquettes, including sulfur, heat treating and purifying the residual porous metallic molybdenum briquettes by subjecting them to a hydrogen gas sweep at an elevated temperature under vacuum, effecting a further extraction of residual sulfur, and thereafter recovering the heat treated briquettes which contain upward of 90% metallic molybdenum.